From 467a44b0372d8268ce5bd90e58bde7db51c1d476 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Sat, 3 May 2014 16:57:00 +0100 Subject: [PATCH 001/623] iio: adc: at91_adc: Repair broken platform_data support Trying to use the at91_adc driver while not using device tree is ending up in a kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 00000004 [...] [] (at91_adc_probe) from [] (platform_drv_probe+0x18/0x48) [] (platform_drv_probe) from [] (driver_probe_device+0x100/0x218) [] (driver_probe_device) from [] (__driver_attach+0x8c/0x90) [] (__driver_attach) from [] (bus_for_each_dev+0x58/0x88) [] (bus_for_each_dev) from [] (bus_add_driver+0xd4/0x1d4) [] (bus_add_driver) from [] (driver_register+0x78/0xf4) [] (driver_register) from [] (do_one_initcall+0xe8/0x14c) [] (do_one_initcall) from [] (kernel_init_freeable+0xec/0x1b4) [] (kernel_init_freeable) from [] (kernel_init+0x8/0xe4) [] (kernel_init) from [] (ret_from_fork+0x14/0x24) This is because the at91_adc_caps structure is mandatory but is not filled when using platform_data. Correct that by using an id_table. It ensues that the driver will not match "at91_adc" anymore but it was crashing anyway. Fixes: c46016665fff (iio: at91: ADC start-up time calculation changed since at91sam9x5) Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Alexandre Belloni Tested-by: Josh Wu Acked-by: Josh Wu Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 5b1aa027c034..bbba014c9939 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -765,14 +765,17 @@ static int at91_adc_probe_pdata(struct at91_adc_state *st, if (!pdata) return -EINVAL; + st->caps = (struct at91_adc_caps *) + platform_get_device_id(pdev)->driver_data; + st->use_external = pdata->use_external_triggers; st->vref_mv = pdata->vref; st->channels_mask = pdata->channels_used; - st->num_channels = pdata->num_channels; + st->num_channels = st->caps->num_channels; st->startup_time = pdata->startup_time; st->trigger_number = pdata->trigger_number; st->trigger_list = pdata->trigger_list; - st->registers = pdata->registers; + st->registers = &st->caps->registers; return 0; } @@ -1101,7 +1104,6 @@ static int at91_adc_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_OF static struct at91_adc_caps at91sam9260_caps = { .calc_startup_ticks = calc_startup_ticks_9260, .num_channels = 4, @@ -1154,11 +1156,27 @@ static const struct of_device_id at91_adc_dt_ids[] = { {}, }; MODULE_DEVICE_TABLE(of, at91_adc_dt_ids); -#endif + +static const struct platform_device_id at91_adc_ids[] = { + { + .name = "at91sam9260-adc", + .driver_data = (unsigned long)&at91sam9260_caps, + }, { + .name = "at91sam9g45-adc", + .driver_data = (unsigned long)&at91sam9g45_caps, + }, { + .name = "at91sam9x5-adc", + .driver_data = (unsigned long)&at91sam9x5_caps, + }, { + /* terminator */ + } +}; +MODULE_DEVICE_TABLE(platform, at91_adc_ids); static struct platform_driver at91_adc_driver = { .probe = at91_adc_probe, .remove = at91_adc_remove, + .id_table = at91_adc_ids, .driver = { .name = DRIVER_NAME, .of_match_table = of_match_ptr(at91_adc_dt_ids), From 41c897f8789d0d1039ed873ddcd0caabd5756e0f Mon Sep 17 00:00:00 2001 From: Beomho Seo Date: Wed, 3 Dec 2014 00:57:00 +0000 Subject: [PATCH 002/623] iio: cm32181: Fix read integration time function In read integration time function, assign 0 to val. Because, prevent return inaccurate value when call read integration time. Cc: Stable@vger.kernel.org Cc: Kevin Tsai Signed-off-by: Beomho Seo Signed-off-by: Jonathan Cameron --- drivers/iio/light/cm32181.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c index 47a6dbac2d0c..d976e6ce60db 100644 --- a/drivers/iio/light/cm32181.c +++ b/drivers/iio/light/cm32181.c @@ -221,6 +221,7 @@ static int cm32181_read_raw(struct iio_dev *indio_dev, *val = cm32181->calibscale; return IIO_VAL_INT; case IIO_CHAN_INFO_INT_TIME: + *val = 0; ret = cm32181_read_als_it(cm32181, val2); return ret; } From 142df13b7598d88de5b163464e74d2101912f479 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Sat, 3 May 2014 16:57:00 +0100 Subject: [PATCH 003/623] ARM: at91: at91sam9g45: change at91_adc name We can't use "at91_adc" to refer to the at91_adc driver anymore as the name is used to match an id_table. Signed-off-by: Alexandre Belloni Acked-by: Nicolas Ferre Signed-off-by: Jonathan Cameron --- arch/arm/mach-at91/at91sam9g45_devices.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index cb36fa872d30..88554024eb2d 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -1203,7 +1203,7 @@ static struct resource adc_resources[] = { }; static struct platform_device at91_adc_device = { - .name = "at91_adc", + .name = "at91sam9g45-adc", .id = -1, .dev = { .platform_data = &adc_data, From 301841a634976c1cef4490cae577ffd0f26d0149 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Sat, 3 May 2014 16:57:00 +0100 Subject: [PATCH 004/623] ARM: at91: at91sam9260: change at91_adc name We can't use "at91_adc" to refer to the at91_adc driver anymore as the name is used to match an id_table. Signed-off-by: Alexandre Belloni Acked-by: Nicolas Ferre Signed-off-by: Jonathan Cameron --- arch/arm/mach-at91/at91sam9260_devices.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index eda8d1679d40..0a0315920963 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -1292,7 +1292,7 @@ static struct resource adc_resources[] = { }; static struct platform_device at91_adc_device = { - .name = "at91_adc", + .name = "at91sam9260-adc", .id = -1, .dev = { .platform_data = &adc_data, From 8f32b6ba56ef8c8434635b9f08ff6a23510960a5 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Mon, 3 Mar 2014 18:07:00 +0000 Subject: [PATCH 005/623] iio: adc: at91_adc: correct default shtim value When sample_hold_time is zero (this is the case when DT is not used or if atmel,adc-sample-hold-time is omitted), then the calculated shtim is large. Make that 0, which is the default for that register and the ADC will then use a sane value of 2/ADCCLK or 1/ADCCLK depending on the version. Signed-off-by: Alexandre Belloni Acked-by: Josh Wu Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index bbba014c9939..89777ed9abd8 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -1007,8 +1007,11 @@ static int at91_adc_probe(struct platform_device *pdev) * the best converted final value between two channels selection * The formula thus is : Sample and Hold Time = (shtim + 1) / ADCClock */ - shtim = round_up((st->sample_hold_time * adc_clk_khz / - 1000) - 1, 1); + if (st->sample_hold_time > 0) + shtim = round_up((st->sample_hold_time * adc_clk_khz / 1000) + - 1, 1); + else + shtim = 0; reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask; reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask; From 6b9da2e77249bd62bb0902319cfa22398f32c538 Mon Sep 17 00:00:00 2001 From: Jimmy Li Date: Sat, 22 Mar 2014 05:58:00 +0000 Subject: [PATCH 006/623] staging:iio:ad2s1200 fix a missing break Signed-off-by: Jimmy Li Signed-off-by: Jonathan Cameron --- drivers/staging/iio/resolver/ad2s1200.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/staging/iio/resolver/ad2s1200.c b/drivers/staging/iio/resolver/ad2s1200.c index 36eedd8a0ea9..e2b482045158 100644 --- a/drivers/staging/iio/resolver/ad2s1200.c +++ b/drivers/staging/iio/resolver/ad2s1200.c @@ -70,6 +70,7 @@ static int ad2s1200_read_raw(struct iio_dev *indio_dev, vel = (((s16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4); vel = (vel << 4) >> 4; *val = vel; + break; default: mutex_unlock(&st->lock); return -EINVAL; From 2076a20fc1a06f7b0333c62a2bb4eeeac7ed1bcb Mon Sep 17 00:00:00 2001 From: Alec Berg Date: Wed, 19 Mar 2014 18:50:00 +0000 Subject: [PATCH 007/623] iio: querying buffer scan_mask should return 0/1 Ensure that querying the IIO buffer scan_mask returns a value of 0 or 1. Currently querying the scan mask has the value returned by test_bit(), which returns either true or false. For some architectures test_bit() may return -1 for true, which will appear to return an error when returning from iio_scan_mask_query(). Additionally, it's important for the sysfs interface to consistently return the same thing when querying the scan_mask. Signed-off-by: Alec Berg Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index c67d83bdc8f0..fe25042f056a 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -165,7 +165,8 @@ static ssize_t iio_scan_el_show(struct device *dev, int ret; struct iio_dev *indio_dev = dev_to_iio_dev(dev); - ret = test_bit(to_iio_dev_attr(attr)->address, + /* Ensure ret is 0 or 1. */ + ret = !!test_bit(to_iio_dev_attr(attr)->address, indio_dev->buffer->scan_mask); return sprintf(buf, "%d\n", ret); @@ -866,7 +867,8 @@ int iio_scan_mask_query(struct iio_dev *indio_dev, if (!buffer->scan_mask) return 0; - return test_bit(bit, buffer->scan_mask); + /* Ensure return value is 0 or 1. */ + return !!test_bit(bit, buffer->scan_mask); }; EXPORT_SYMBOL_GPL(iio_scan_mask_query); From d0a588a57c2b0748df8307a0865a1bbbf1624c53 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 18 Mar 2014 08:13:00 +0000 Subject: [PATCH 008/623] iio: cm36651: Fix i2c client leak and possible NULL pointer dereference During probe the driver allocates dummy I2C devices (i2c_new_dummy()) but they aren't unregistered during driver remove or probe failure. Additionally driver does not check the return value of i2c_new_dummy(). In case of error (i2c_new_device(): memory allocation failure or I2C address cannot be used) this function returns NULL which is later dereferenced by i2c_smbus_{read,write}_data() functions. Fix issues by properly checking for i2c_new_dummy() return value and unregistering I2C devices on driver remove or probe failure. Signed-off-by: Krzysztof Kozlowski Acked-by: Beomho Seo Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/light/cm36651.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c index a45e07492db3..39fc67e82138 100644 --- a/drivers/iio/light/cm36651.c +++ b/drivers/iio/light/cm36651.c @@ -652,7 +652,19 @@ static int cm36651_probe(struct i2c_client *client, cm36651->client = client; cm36651->ps_client = i2c_new_dummy(client->adapter, CM36651_I2C_ADDR_PS); + if (!cm36651->ps_client) { + dev_err(&client->dev, "%s: new i2c device failed\n", __func__); + ret = -ENODEV; + goto error_disable_reg; + } + cm36651->ara_client = i2c_new_dummy(client->adapter, CM36651_ARA); + if (!cm36651->ara_client) { + dev_err(&client->dev, "%s: new i2c device failed\n", __func__); + ret = -ENODEV; + goto error_i2c_unregister_ps; + } + mutex_init(&cm36651->lock); indio_dev->dev.parent = &client->dev; indio_dev->channels = cm36651_channels; @@ -664,7 +676,7 @@ static int cm36651_probe(struct i2c_client *client, ret = cm36651_setup_reg(cm36651); if (ret) { dev_err(&client->dev, "%s: register setup failed\n", __func__); - goto error_disable_reg; + goto error_i2c_unregister_ara; } ret = request_threaded_irq(client->irq, NULL, cm36651_irq_handler, @@ -672,7 +684,7 @@ static int cm36651_probe(struct i2c_client *client, "cm36651", indio_dev); if (ret) { dev_err(&client->dev, "%s: request irq failed\n", __func__); - goto error_disable_reg; + goto error_i2c_unregister_ara; } ret = iio_device_register(indio_dev); @@ -685,6 +697,10 @@ static int cm36651_probe(struct i2c_client *client, error_free_irq: free_irq(client->irq, indio_dev); +error_i2c_unregister_ara: + i2c_unregister_device(cm36651->ara_client); +error_i2c_unregister_ps: + i2c_unregister_device(cm36651->ps_client); error_disable_reg: regulator_disable(cm36651->vled_reg); return ret; @@ -698,6 +714,8 @@ static int cm36651_remove(struct i2c_client *client) iio_device_unregister(indio_dev); regulator_disable(cm36651->vled_reg); free_irq(client->irq, indio_dev); + i2c_unregister_device(cm36651->ps_client); + i2c_unregister_device(cm36651->ara_client); return 0; } From e036f71e8ce310dc58b1351c3eb967b892f4641c Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Mon, 17 Mar 2014 16:43:00 +0000 Subject: [PATCH 009/623] iio: adc: mxs-lradc: fix warning when buidling on avr32 This fixes: drivers/staging/iio/adc/mxs-lradc.c: In function 'mxs_lradc_probe': drivers/staging/iio/adc/mxs-lradc.c:1558: warning: comparison of distinct pointer types lacks a cast drivers/staging/iio/adc/mxs-lradc.c:1558: warning: right shift count >= width of type drivers/staging/iio/adc/mxs-lradc.c:1558: warning: passing argument 1 of '__div64_32' from incompatible pointer type When building on avr32. Reported-by: Fengguang Wu Signed-off-by: Alexandre Belloni Signed-off-by: Jonathan Cameron --- drivers/staging/iio/adc/mxs-lradc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c index 514844efac75..53b3f963a7e3 100644 --- a/drivers/staging/iio/adc/mxs-lradc.c +++ b/drivers/staging/iio/adc/mxs-lradc.c @@ -1527,7 +1527,7 @@ static int mxs_lradc_probe(struct platform_device *pdev) struct resource *iores; int ret = 0, touch_ret; int i, s; - unsigned int scale_uv; + uint64_t scale_uv; /* Allocate the IIO device. */ iio = devm_iio_device_alloc(dev, sizeof(*lradc)); From eb8451e0aee1816395506e97965d0917754072de Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 27 Feb 2014 14:41:14 +0100 Subject: [PATCH 010/623] xtensa: Export __invalidate_icache_range When modular code calls flush_icache_range(): ERROR: "__invalidate_icache_range" [drivers/misc/lkdtm.ko] undefined! make[1]: *** [__modpost] Error 1 Signed-off-by: Geert Uytterhoeven Reviewed-by: Kees Cook Signed-off-by: Max Filippov --- arch/xtensa/kernel/xtensa_ksyms.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c index 80b33ed51f31..88eab32be29e 100644 --- a/arch/xtensa/kernel/xtensa_ksyms.c +++ b/arch/xtensa/kernel/xtensa_ksyms.c @@ -105,6 +105,7 @@ EXPORT_SYMBOL(csum_partial_copy_generic); * Architecture-specific symbols */ EXPORT_SYMBOL(__xtensa_copy_user); +EXPORT_SYMBOL(__invalidate_icache_range); /* * Kernel hacking ... From a3cfda9d2f9ca067a2757b9d85d98cfbaf1e8c63 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Fri, 21 Mar 2014 21:05:16 +0400 Subject: [PATCH 011/623] xtensa: export __{invalidate,flush}_dcache_range Signed-off-by: Max Filippov --- arch/xtensa/kernel/xtensa_ksyms.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c index 88eab32be29e..4d2872fd9bb5 100644 --- a/arch/xtensa/kernel/xtensa_ksyms.c +++ b/arch/xtensa/kernel/xtensa_ksyms.c @@ -20,6 +20,7 @@ #include #include +#include #include #include #include @@ -128,3 +129,8 @@ EXPORT_SYMBOL(common_exception_return); #ifdef CONFIG_FUNCTION_TRACER EXPORT_SYMBOL(_mcount); #endif + +EXPORT_SYMBOL(__invalidate_dcache_range); +#if XCHAL_DCACHE_IS_WRITEBACK +EXPORT_SYMBOL(__flush_dcache_range); +#endif From 25df8198f4b257cf6db4d4f000c53accfa9c28f8 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 18 Feb 2014 15:29:11 +0400 Subject: [PATCH 012/623] xtensa: enable sorting extable at build time Signed-off-by: Max Filippov Acked-by: David Daney --- arch/xtensa/Kconfig | 1 + scripts/sortextable.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index c87ae7c6e5f9..df6f86ca6c1a 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -14,6 +14,7 @@ config XTENSA select GENERIC_PCI_IOMAP select ARCH_WANT_IPC_PARSE_VERSION select ARCH_WANT_OPTIONAL_GPIOLIB + select BUILDTIME_EXTABLE_SORT select CLONE_BACKWARDS select IRQ_DOMAIN select HAVE_OPROFILE diff --git a/scripts/sortextable.c b/scripts/sortextable.c index cc49062acdee..1052d4834a44 100644 --- a/scripts/sortextable.c +++ b/scripts/sortextable.c @@ -35,6 +35,10 @@ #define EM_ARCOMPACT 93 #endif +#ifndef EM_XTENSA +#define EM_XTENSA 94 +#endif + #ifndef EM_AARCH64 #define EM_AARCH64 183 #endif @@ -281,6 +285,7 @@ do_file(char const *const fname) case EM_AARCH64: case EM_MICROBLAZE: case EM_MIPS: + case EM_XTENSA: break; } /* end switch */ From 9ba067f93f1eec0d241f002812806b873dd4f802 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 23 Mar 2014 03:17:43 +0400 Subject: [PATCH 013/623] xtensa: split bootparam and kernel meminfo Bootparam meminfo is a bootloader ABI, kernel meminfo is for the kernel bookkeeping, keep them separate. Kernel doesn't care of memory region types, so drop the type field and don't pass it to add_sysmem_bank. Move kernel sysmem structures and prototypes to asm/sysmem.h and sysmem variable and add_sysmem_bank to mm/init.c Signed-off-by: Max Filippov --- arch/xtensa/include/asm/bootparam.h | 13 ++------- arch/xtensa/include/asm/sysmem.h | 33 ++++++++++++++++++++++ arch/xtensa/kernel/setup.c | 43 ++++++----------------------- arch/xtensa/mm/init.c | 17 ++++++++++++ 4 files changed, 61 insertions(+), 45 deletions(-) create mode 100644 arch/xtensa/include/asm/sysmem.h diff --git a/arch/xtensa/include/asm/bootparam.h b/arch/xtensa/include/asm/bootparam.h index 23392c5630ce..892aab399ac8 100644 --- a/arch/xtensa/include/asm/bootparam.h +++ b/arch/xtensa/include/asm/bootparam.h @@ -37,23 +37,14 @@ typedef struct bp_tag { unsigned long data[0]; /* data */ } bp_tag_t; -typedef struct meminfo { +struct bp_meminfo { unsigned long type; unsigned long start; unsigned long end; -} meminfo_t; - -#define SYSMEM_BANKS_MAX 5 +}; #define MEMORY_TYPE_CONVENTIONAL 0x1000 #define MEMORY_TYPE_NONE 0x2000 -typedef struct sysmem_info { - int nr_banks; - meminfo_t bank[SYSMEM_BANKS_MAX]; -} sysmem_info_t; - -extern sysmem_info_t sysmem; - #endif #endif diff --git a/arch/xtensa/include/asm/sysmem.h b/arch/xtensa/include/asm/sysmem.h new file mode 100644 index 000000000000..fe7ad750a158 --- /dev/null +++ b/arch/xtensa/include/asm/sysmem.h @@ -0,0 +1,33 @@ +/* + * sysmem-related prototypes. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2014 Cadence Design Systems Inc. + */ + +#ifndef _XTENSA_SYSMEM_H +#define _XTENSA_SYSMEM_H + +#define SYSMEM_BANKS_MAX 31 + +struct meminfo { + unsigned long start; + unsigned long end; +}; + +struct sysmem_info { + int nr_banks; + struct meminfo bank[SYSMEM_BANKS_MAX]; +}; + +extern struct sysmem_info sysmem; + +int add_sysmem_bank(unsigned long start, unsigned long end); +int mem_reserve(unsigned long, unsigned long, int); +void bootmem_init(void); +void zones_init(void); + +#endif /* _XTENSA_SYSMEM_H */ diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 84fe931bb60e..df2b1d6fc843 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -50,6 +50,7 @@ #include #include #include +#include #include @@ -88,12 +89,6 @@ static char __initdata command_line[COMMAND_LINE_SIZE]; static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE; #endif -sysmem_info_t __initdata sysmem; - -extern int mem_reserve(unsigned long, unsigned long, int); -extern void bootmem_init(void); -extern void zones_init(void); - /* * Boot parameter parsing. * @@ -113,31 +108,14 @@ typedef struct tagtable { /* parse current tag */ -static int __init add_sysmem_bank(unsigned long type, unsigned long start, - unsigned long end) -{ - if (sysmem.nr_banks >= SYSMEM_BANKS_MAX) { - printk(KERN_WARNING - "Ignoring memory bank 0x%08lx size %ldKB\n", - start, end - start); - return -EINVAL; - } - sysmem.bank[sysmem.nr_banks].type = type; - sysmem.bank[sysmem.nr_banks].start = PAGE_ALIGN(start); - sysmem.bank[sysmem.nr_banks].end = end & PAGE_MASK; - sysmem.nr_banks++; - - return 0; -} - static int __init parse_tag_mem(const bp_tag_t *tag) { - meminfo_t *mi = (meminfo_t *)(tag->data); + struct bp_meminfo *mi = (struct bp_meminfo *)(tag->data); if (mi->type != MEMORY_TYPE_CONVENTIONAL) return -1; - return add_sysmem_bank(mi->type, mi->start, mi->end); + return add_sysmem_bank(mi->start, mi->end); } __tagtable(BP_TAG_MEMORY, parse_tag_mem); @@ -146,8 +124,8 @@ __tagtable(BP_TAG_MEMORY, parse_tag_mem); static int __init parse_tag_initrd(const bp_tag_t* tag) { - meminfo_t* mi; - mi = (meminfo_t*)(tag->data); + struct bp_meminfo *mi = (struct bp_meminfo *)(tag->data); + initrd_start = (unsigned long)__va(mi->start); initrd_end = (unsigned long)__va(mi->end); @@ -255,7 +233,7 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size) return; size &= PAGE_MASK; - add_sysmem_bank(MEMORY_TYPE_CONVENTIONAL, base, base + size); + add_sysmem_bank(base, base + size); } void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) @@ -292,8 +270,6 @@ device_initcall(xtensa_device_probe); void __init init_arch(bp_tag_t *bp_start) { - sysmem.nr_banks = 0; - /* Parse boot parameters */ if (bp_start) @@ -304,10 +280,9 @@ void __init init_arch(bp_tag_t *bp_start) #endif if (sysmem.nr_banks == 0) { - sysmem.nr_banks = 1; - sysmem.bank[0].start = PLATFORM_DEFAULT_MEM_START; - sysmem.bank[0].end = PLATFORM_DEFAULT_MEM_START - + PLATFORM_DEFAULT_MEM_SIZE; + add_sysmem_bank(PLATFORM_DEFAULT_MEM_START, + PLATFORM_DEFAULT_MEM_START + + PLATFORM_DEFAULT_MEM_SIZE); } #ifdef CONFIG_CMDLINE_BOOL diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index aff108df92d3..4f78264e8bd8 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -27,6 +27,23 @@ #include #include #include +#include + +struct sysmem_info sysmem __initdata; + +int __init add_sysmem_bank(unsigned long start, unsigned long end) +{ + if (sysmem.nr_banks >= SYSMEM_BANKS_MAX) { + pr_warn("Ignoring memory bank 0x%08lx size %ldKB\n", + start, end - start); + return -EINVAL; + } + sysmem.bank[sysmem.nr_banks].start = PAGE_ALIGN(start); + sysmem.bank[sysmem.nr_banks].end = end & PAGE_MASK; + sysmem.nr_banks++; + + return 0; +} /* * mem_reserve(start, end, must_exist) From 9d4b52df4b1242e6ba9a00db5f8d62083a56709f Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 23 Mar 2014 03:34:44 +0400 Subject: [PATCH 014/623] xtensa: keep sysmem banks ordered in add_sysmem_bank Rewrite add_sysmem_bank so that it keeps bank order and merges adjacent/overlapping banks. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/sysmem.h | 5 ++ arch/xtensa/mm/init.c | 103 +++++++++++++++++++++++++++++-- 2 files changed, 103 insertions(+), 5 deletions(-) diff --git a/arch/xtensa/include/asm/sysmem.h b/arch/xtensa/include/asm/sysmem.h index fe7ad750a158..c015c5c8e3f7 100644 --- a/arch/xtensa/include/asm/sysmem.h +++ b/arch/xtensa/include/asm/sysmem.h @@ -18,6 +18,11 @@ struct meminfo { unsigned long end; }; +/* + * Bank array is sorted by .start. + * Banks don't overlap and there's at least one page gap + * between adjacent bank entries. + */ struct sysmem_info { int nr_banks; struct meminfo bank[SYSMEM_BANKS_MAX]; diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 4f78264e8bd8..79c0c3d52ae3 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -8,6 +8,7 @@ * for more details. * * Copyright (C) 2001 - 2005 Tensilica Inc. + * Copyright (C) 2014 Cadence Design Systems Inc. * * Chris Zankel * Joe Taylor @@ -31,17 +32,109 @@ struct sysmem_info sysmem __initdata; +/* + * Find bank with maximal .start such that bank.start <= start + */ +static inline struct meminfo * __init find_bank(unsigned long start) +{ + unsigned i; + struct meminfo *it = NULL; + + for (i = 0; i < sysmem.nr_banks; ++i) + if (sysmem.bank[i].start <= start) + it = sysmem.bank + i; + else + break; + return it; +} + +/* + * Move all memory banks starting at 'from' to a new place at 'to', + * adjust nr_banks accordingly. + * Both 'from' and 'to' must be inside the sysmem.bank. + * + * Returns: 0 (success), -ENOMEM (not enough space in the sysmem.bank). + */ +static int __init move_banks(struct meminfo *to, struct meminfo *from) +{ + unsigned n = sysmem.nr_banks - (from - sysmem.bank); + + if (to > from && to - from + sysmem.nr_banks > SYSMEM_BANKS_MAX) + return -ENOMEM; + if (to != from) + memmove(to, from, n * sizeof(struct meminfo)); + sysmem.nr_banks += to - from; + return 0; +} + +/* + * Add new bank to sysmem. Resulting sysmem is the union of bytes of the + * original sysmem and the new bank. + * + * Returns: 0 (success), < 0 (error) + */ int __init add_sysmem_bank(unsigned long start, unsigned long end) { - if (sysmem.nr_banks >= SYSMEM_BANKS_MAX) { - pr_warn("Ignoring memory bank 0x%08lx size %ldKB\n", + unsigned i; + struct meminfo *it = NULL; + unsigned long sz; + unsigned long bank_sz = 0; + + if (start == end || + (start < end) != (PAGE_ALIGN(start) < (end & PAGE_MASK))) { + pr_warn("Ignoring small memory bank 0x%08lx size: %ld bytes\n", start, end - start); return -EINVAL; } - sysmem.bank[sysmem.nr_banks].start = PAGE_ALIGN(start); - sysmem.bank[sysmem.nr_banks].end = end & PAGE_MASK; - sysmem.nr_banks++; + start = PAGE_ALIGN(start); + end &= PAGE_MASK; + sz = end - start; + + it = find_bank(start); + + if (it) + bank_sz = it->end - it->start; + + if (it && bank_sz >= start - it->start) { + if (end - it->start > bank_sz) + it->end = end; + else + return 0; + } else { + if (!it) + it = sysmem.bank; + else + ++it; + + if (it - sysmem.bank < sysmem.nr_banks && + it->start - start <= sz) { + it->start = start; + if (it->end - it->start < sz) + it->end = end; + else + return 0; + } else { + if (move_banks(it + 1, it) < 0) { + pr_warn("Ignoring memory bank 0x%08lx size %ld bytes\n", + start, end - start); + return -EINVAL; + } + it->start = start; + it->end = end; + return 0; + } + } + sz = it->end - it->start; + for (i = it + 1 - sysmem.bank; i < sysmem.nr_banks; ++i) + if (sysmem.bank[i].start - it->start <= sz) { + if (sz < sysmem.bank[i].end - it->start) + it->end = sysmem.bank[i].end; + } else { + break; + } + + move_banks(it + 1, sysmem.bank + i); return 0; } From 6232791833785ae591b211609f6f7c4faa7c6e55 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 23 Mar 2014 03:24:45 +0400 Subject: [PATCH 015/623] xtensa: keep sysmem banks ordered in mem_reserve Rewrite mem_reserve so that it keeps bank order. Also make its return code more traditional. Signed-off-by: Max Filippov --- arch/xtensa/kernel/setup.c | 2 +- arch/xtensa/mm/init.c | 86 +++++++++++++++++++++++--------------- 2 files changed, 53 insertions(+), 35 deletions(-) diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index df2b1d6fc843..017c06aba9b2 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -462,7 +462,7 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start < initrd_end) { initrd_is_mapped = mem_reserve(__pa(initrd_start), - __pa(initrd_end), 0); + __pa(initrd_end), 0) == 0; initrd_below_start_ok = 1; } else { initrd_start = 0; diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 79c0c3d52ae3..5d23697957bf 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -142,6 +142,8 @@ int __init add_sysmem_bank(unsigned long start, unsigned long end) * mem_reserve(start, end, must_exist) * * Reserve some memory from the memory pool. + * If must_exist is set and a part of the region being reserved does not exist + * memory map is not altered. * * Parameters: * start Start of region, @@ -149,53 +151,69 @@ int __init add_sysmem_bank(unsigned long start, unsigned long end) * must_exist Must exist in memory pool. * * Returns: - * 0 (memory area couldn't be mapped) - * -1 (success) + * 0 (success) + * < 0 (error) */ int __init mem_reserve(unsigned long start, unsigned long end, int must_exist) { - int i; - - if (start == end) - return 0; + struct meminfo *it; + struct meminfo *rm = NULL; + unsigned long sz; + unsigned long bank_sz = 0; start = start & PAGE_MASK; end = PAGE_ALIGN(end); + sz = end - start; + if (!sz) + return -EINVAL; - for (i = 0; i < sysmem.nr_banks; i++) - if (start < sysmem.bank[i].end - && end >= sysmem.bank[i].start) - break; + it = find_bank(start); - if (i == sysmem.nr_banks) { - if (must_exist) - printk (KERN_WARNING "mem_reserve: [0x%0lx, 0x%0lx) " - "not in any region!\n", start, end); - return 0; + if (it) + bank_sz = it->end - it->start; + + if ((!it || end - it->start > bank_sz) && must_exist) { + pr_warn("mem_reserve: [0x%0lx, 0x%0lx) not in any region!\n", + start, end); + return -EINVAL; } - if (start > sysmem.bank[i].start) { - if (end < sysmem.bank[i].end) { - /* split entry */ - if (sysmem.nr_banks >= SYSMEM_BANKS_MAX) - panic("meminfo overflow\n"); - sysmem.bank[sysmem.nr_banks].start = end; - sysmem.bank[sysmem.nr_banks].end = sysmem.bank[i].end; - sysmem.nr_banks++; + if (it && start - it->start < bank_sz) { + if (start == it->start) { + if (end - it->start < bank_sz) { + it->start = end; + return 0; + } else { + rm = it; + } + } else { + it->end = start; + if (end - it->start < bank_sz) + return add_sysmem_bank(end, + it->start + bank_sz); + ++it; } - sysmem.bank[i].end = start; - - } else if (end < sysmem.bank[i].end) { - sysmem.bank[i].start = end; - - } else { - /* remove entry */ - sysmem.nr_banks--; - sysmem.bank[i].start = sysmem.bank[sysmem.nr_banks].start; - sysmem.bank[i].end = sysmem.bank[sysmem.nr_banks].end; } - return -1; + + if (!it) + it = sysmem.bank; + + for (; it < sysmem.bank + sysmem.nr_banks; ++it) { + if (it->end - start <= sz) { + if (!rm) + rm = it; + } else { + if (it->start - start < sz) + it->start = end; + break; + } + } + + if (rm) + move_banks(rm, it); + + return 0; } From 06bd2824f7dcbfb8dcd13519239a53d13298d238 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Fri, 21 Mar 2014 21:04:40 +0400 Subject: [PATCH 016/623] xtensa: handle memmap kernel option This option is useful for reserving memory regions for secondary cores in AMP configurations. Implement the following memmap variants: - memmap=nn[KMG]@ss[KMG]: force usage of a specific region of memory; - memmap=nn[KMG]$ss[KMG]: mark specified memory as reserved; - memmap=nn[KMG]: set end of memory. Signed-off-by: Max Filippov --- arch/xtensa/kernel/setup.c | 1 + arch/xtensa/mm/init.c | 50 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+) diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 017c06aba9b2..9757bb74e532 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -507,6 +507,7 @@ void __init setup_arch(char **cmdline_p) __pa(&_Level6InterruptVector_text_end), 0); #endif + parse_early_param(); bootmem_init(); unflatten_and_copy_device_tree(); diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 5d23697957bf..d70ba9333f44 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -332,3 +332,53 @@ void free_initmem(void) { free_initmem_default(-1); } + +static void __init parse_memmap_one(char *p) +{ + char *oldp; + unsigned long start_at, mem_size; + + if (!p) + return; + + oldp = p; + mem_size = memparse(p, &p); + if (p == oldp) + return; + + switch (*p) { + case '@': + start_at = memparse(p + 1, &p); + add_sysmem_bank(start_at, start_at + mem_size); + break; + + case '$': + start_at = memparse(p + 1, &p); + mem_reserve(start_at, start_at + mem_size, 0); + break; + + case 0: + mem_reserve(mem_size, 0, 0); + break; + + default: + pr_warn("Unrecognized memmap syntax: %s\n", p); + break; + } +} + +static int __init parse_memmap_opt(char *str) +{ + while (str) { + char *k = strchr(str, ','); + + if (k) + *k++ = 0; + + parse_memmap_one(str); + str = k; + } + + return 0; +} +early_param("memmap", parse_memmap_opt); From 8585b316bbed9339412d267c1fd8839dd059d69f Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 23 Mar 2014 03:26:46 +0400 Subject: [PATCH 017/623] xtensa: dump sysmem from the bootmem_init Debug dump of physical memory configuration. Useful for inspection of resulting memory map, esp. in the presence of memmap= kernel option. Signed-off-by: Max Filippov --- arch/xtensa/mm/init.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index d70ba9333f44..03bd025307e3 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -32,6 +32,17 @@ struct sysmem_info sysmem __initdata; +static void __init sysmem_dump(void) +{ + unsigned i; + + pr_debug("Sysmem:\n"); + for (i = 0; i < sysmem.nr_banks; ++i) + pr_debug(" 0x%08lx - 0x%08lx (%ldK)\n", + sysmem.bank[i].start, sysmem.bank[i].end, + (sysmem.bank[i].end - sysmem.bank[i].start) >> 10); +} + /* * Find bank with maximal .start such that bank.start <= start */ @@ -227,6 +238,7 @@ void __init bootmem_init(void) unsigned long bootmap_start, bootmap_size; int i; + sysmem_dump(); max_low_pfn = max_pfn = 0; min_low_pfn = ~0; From 74c03eb63061c834893e7ebf8d298573bdccfd08 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 2 Apr 2014 12:41:59 -0400 Subject: [PATCH 018/623] libata: make AHCI_XGENE depend on PHY_XGENE AHCI_XGENE is only applicable on ARM64 but it can also be enabled for compile testing; however, AHCI_XGENE selects PHY_XGENE which has other arch specific dependencies. This leads to the following warning when enabling it on other archs for compile testing. warning: (AHCI_XGENE) selects PHY_XGENE which has unmet direct dependencies (HAS_IOMEM && OF && (ARM64 || COMPILE_TEST)) Selecting a config option which itself has dependencies can easily lead to broken configurations. For now, let's just make AHCI_XGENE depend on PHY_XGENE which has all the necessary dependencies already. Signed-off-by: Tejun Heo Reported-by: Linus Torvalds Cc: Loc Ho Cc: Bartlomiej Zolnierkiewicz Cc: Kishon Vijay Abraham I --- drivers/ata/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 20e03a7eb8b4..2e4da3bc47fc 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -134,8 +134,7 @@ config AHCI_SUNXI config AHCI_XGENE tristate "APM X-Gene 6.0Gbps AHCI SATA host controller support" - depends on ARM64 || COMPILE_TEST - select PHY_XGENE + depends on PHY_XGENE help This option enables support for APM X-Gene SoC SATA host controller. From d121f7d0cbb875abce249dbf7eb191f9bafe80b7 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Tue, 1 Apr 2014 20:42:37 -0400 Subject: [PATCH 019/623] libata: Update queued trim blacklist for M5x0 drives Crucial/Micron M500 drives properly support queued DSM TRIM starting with firmware MU05. Update the blacklist so we only disable queued trim for older firmware releases. Early M550 series drives suffer from the same issue as M500. A bugfix firmware is in the pipeline but not ready yet. Until then, blacklist queued trim for M550. Signed-off-by: Martin K. Petersen Cc: Chris Samuel Cc: Marc MERLIN Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- drivers/ata/libata-core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 34406f7fdd7a..f2a6020366e1 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4224,8 +4224,10 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER }, /* devices that don't properly handle queued TRIM commands */ - { "Micron_M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, - { "Crucial_CT???M500SSD*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, + { "Micron_M500*", "MU0[1-4]*", ATA_HORKAGE_NO_NCQ_TRIM, }, + { "Crucial_CT???M500SSD*", "MU0[1-4]*", ATA_HORKAGE_NO_NCQ_TRIM, }, + { "Micron_M550*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, + { "Crucial_CT???M550SSD*", NULL, ATA_HORKAGE_NO_NCQ_TRIM, }, /* * Some WD SATA-I drives spin up and down erratically when the link From 27aa64b9d1bd0d23fd692c91763a48309b694311 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 31 Mar 2014 19:51:14 +0200 Subject: [PATCH 020/623] pata_at91: fix ata_host_activate() failure handling Add missing clk_put() call to ata_host_activate() failure path. Sergei says, "Hm, I have once fixed that (see that *if* (!ret)) but looks like a later commit 477c87e90853d136b188c50c0e4a93d01cad872e (ARM: at91/pata: use gpio_is_valid to check the gpio) broke it again. :-( Would be good if the changelog did mention that..." Cc: Andrew Victor Cc: Nicolas Ferre Cc: Jean-Christophe Plagniol-Villard Cc: Sergei Shtylyov Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- drivers/ata/pata_at91.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/ata/pata_at91.c b/drivers/ata/pata_at91.c index e9c87274a781..8a66f23af4c4 100644 --- a/drivers/ata/pata_at91.c +++ b/drivers/ata/pata_at91.c @@ -407,12 +407,13 @@ static int pata_at91_probe(struct platform_device *pdev) host->private_data = info; - return ata_host_activate(host, gpio_is_valid(irq) ? gpio_to_irq(irq) : 0, - gpio_is_valid(irq) ? ata_sff_interrupt : NULL, - irq_flags, &pata_at91_sht); + ret = ata_host_activate(host, gpio_is_valid(irq) ? gpio_to_irq(irq) : 0, + gpio_is_valid(irq) ? ata_sff_interrupt : NULL, + irq_flags, &pata_at91_sht); + if (ret) + goto err_put; - if (!ret) - return 0; + return 0; err_put: clk_put(info->mck); From 378ed3ccd2a0404d031e771b65aa3af221ea8aea Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Thu, 3 Apr 2014 10:53:43 -0700 Subject: [PATCH 021/623] x86, vdso: Make the vdso linker script compatible with Gold Gold can't parse the script due to: https://sourceware.org/bugzilla/show_bug.cgi?id=16804 With a workaround in place for that issue, Gold 2.23 crashes due to: https://sourceware.org/bugzilla/show_bug.cgi?id=15355 This works around the former bug and avoids the second by removing the unnecessary vvar and hpet sections and segments. The vdso and hpet symbols are still there, and nothing needed the sections or segments. Reported-by: Markus Trippelsdorf Signed-off-by: Andy Lutomirski Link: http://lkml.kernel.org/r/243fa205098d112ec759c9b1b26785c09f399833.1396547532.git.luto@amacapital.net Signed-off-by: H. Peter Anvin --- arch/x86/vdso/vdso-layout.lds.S | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S index 2e263f367b13..9df017ab2285 100644 --- a/arch/x86/vdso/vdso-layout.lds.S +++ b/arch/x86/vdso/vdso-layout.lds.S @@ -9,12 +9,9 @@ SECTIONS #ifdef BUILD_VDSO32 #include - .hpet_sect : { - hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE); - } :text :hpet_sect + hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE); - .vvar_sect : { - vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE); + vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE); /* Place all vvars at the offsets in asm/vvar.h. */ #define EMIT_VVAR(name, offset) vvar_ ## name = vvar + offset; @@ -22,7 +19,6 @@ SECTIONS #include #undef __VVAR_KERNEL_LDS #undef EMIT_VVAR - } :text :vvar_sect #endif . = SIZEOF_HEADERS; @@ -61,7 +57,12 @@ SECTIONS */ . = ALIGN(0x100); - .text : { *(.text*) } :text =0x90909090 + .text : { *(.text*) } :text =0x90909090, + + /* + * The comma above works around a bug in gold: + * https://sourceware.org/bugzilla/show_bug.cgi?id=16804 + */ /DISCARD/ : { *(.discard) @@ -84,8 +85,4 @@ PHDRS dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ note PT_NOTE FLAGS(4); /* PF_R */ eh_frame_hdr PT_GNU_EH_FRAME; -#ifdef BUILD_VDSO32 - vvar_sect PT_NULL FLAGS(4); /* PF_R */ - hpet_sect PT_NULL FLAGS(4); /* PF_R */ -#endif } From 04c6b3e2b5e5c1dbd99ad7620033eafd05ff4c26 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Fri, 14 Feb 2014 14:08:48 +0400 Subject: [PATCH 022/623] xtensa: optimize local_flush_tlb_kernel_range Don't flush whole TLB if only a small kernel range is requested. Signed-off-by: Max Filippov --- arch/xtensa/include/asm/tlbflush.h | 11 ++++------- arch/xtensa/kernel/smp.c | 15 +++++++++++++++ arch/xtensa/mm/tlb.c | 15 +++++++++++++++ 3 files changed, 34 insertions(+), 7 deletions(-) diff --git a/arch/xtensa/include/asm/tlbflush.h b/arch/xtensa/include/asm/tlbflush.h index fc34274ce41b..06875feb27c2 100644 --- a/arch/xtensa/include/asm/tlbflush.h +++ b/arch/xtensa/include/asm/tlbflush.h @@ -36,6 +36,7 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page); void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); +void local_flush_tlb_kernel_range(unsigned long start, unsigned long end); #ifdef CONFIG_SMP @@ -44,12 +45,7 @@ void flush_tlb_mm(struct mm_struct *); void flush_tlb_page(struct vm_area_struct *, unsigned long); void flush_tlb_range(struct vm_area_struct *, unsigned long, unsigned long); - -static inline void flush_tlb_kernel_range(unsigned long start, - unsigned long end) -{ - flush_tlb_all(); -} +void flush_tlb_kernel_range(unsigned long start, unsigned long end); #else /* !CONFIG_SMP */ @@ -58,7 +54,8 @@ static inline void flush_tlb_kernel_range(unsigned long start, #define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page) #define flush_tlb_range(vma, vmaddr, end) local_flush_tlb_range(vma, vmaddr, \ end) -#define flush_tlb_kernel_range(start, end) local_flush_tlb_all() +#define flush_tlb_kernel_range(start, end) local_flush_tlb_kernel_range(start, \ + end) #endif /* CONFIG_SMP */ diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c index aa8bd8717927..40b5a3771fb0 100644 --- a/arch/xtensa/kernel/smp.c +++ b/arch/xtensa/kernel/smp.c @@ -496,6 +496,21 @@ void flush_tlb_range(struct vm_area_struct *vma, on_each_cpu(ipi_flush_tlb_range, &fd, 1); } +static void ipi_flush_tlb_kernel_range(void *arg) +{ + struct flush_data *fd = arg; + local_flush_tlb_kernel_range(fd->addr1, fd->addr2); +} + +void flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + struct flush_data fd = { + .addr1 = start, + .addr2 = end, + }; + on_each_cpu(ipi_flush_tlb_kernel_range, &fd, 1); +} + /* Cache flush functions */ static void ipi_flush_cache_all(void *arg) diff --git a/arch/xtensa/mm/tlb.c b/arch/xtensa/mm/tlb.c index ade623826788..5ece856c5725 100644 --- a/arch/xtensa/mm/tlb.c +++ b/arch/xtensa/mm/tlb.c @@ -149,6 +149,21 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) local_irq_restore(flags); } +void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + if (end > start && start >= TASK_SIZE && end <= PAGE_OFFSET && + end - start < _TLB_ENTRIES << PAGE_SHIFT) { + start &= PAGE_MASK; + while (start < end) { + invalidate_itlb_mapping(start); + invalidate_dtlb_mapping(start); + start += PAGE_SIZE; + } + } else { + local_flush_tlb_all(); + } +} + #ifdef CONFIG_DEBUG_TLB_SANITY static unsigned get_pte_for_vaddr(unsigned vaddr) From 65559100655c6ed6ce2e17ffc8d4f3852bc2858a Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 4 Feb 2014 02:17:09 +0400 Subject: [PATCH 023/623] xtensa: add HIGHMEM support Introduce fixmap area just below the vmalloc region. Use it for atomic mapping of high memory pages. High memory on cores with cache aliasing is not supported and is still to be implemented. Fail build for such configurations for now. Signed-off-by: Max Filippov --- arch/xtensa/Kconfig | 18 ++++++++ arch/xtensa/include/asm/fixmap.h | 58 +++++++++++++++++++++++++ arch/xtensa/include/asm/highmem.h | 45 ++++++++++++++++++- arch/xtensa/include/asm/pgtable.h | 4 ++ arch/xtensa/mm/Makefile | 1 + arch/xtensa/mm/cache.c | 7 ++- arch/xtensa/mm/highmem.c | 72 +++++++++++++++++++++++++++++++ arch/xtensa/mm/init.c | 45 +++++++++++++------ arch/xtensa/mm/mmu.c | 36 ++++++++++++++++ 9 files changed, 270 insertions(+), 16 deletions(-) create mode 100644 arch/xtensa/include/asm/fixmap.h create mode 100644 arch/xtensa/mm/highmem.c diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index df6f86ca6c1a..17b31982c566 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -190,6 +190,24 @@ config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX If in doubt, say Y. +config HIGHMEM + bool "High Memory Support" + help + Linux can use the full amount of RAM in the system by + default. However, the default MMUv2 setup only maps the + lowermost 128 MB of memory linearly to the areas starting + at 0xd0000000 (cached) and 0xd8000000 (uncached). + When there are more than 128 MB memory in the system not + all of it can be "permanently mapped" by the kernel. + The physical memory that's not permanently mapped is called + "high memory". + + If you are compiling a kernel which will never run on a + machine with more than 128 MB total physical RAM, answer + N here. + + If unsure, say Y. + endmenu config XTENSA_CALIBRATE_CCOUNT diff --git a/arch/xtensa/include/asm/fixmap.h b/arch/xtensa/include/asm/fixmap.h new file mode 100644 index 000000000000..9f6c33d0428a --- /dev/null +++ b/arch/xtensa/include/asm/fixmap.h @@ -0,0 +1,58 @@ +/* + * fixmap.h: compile-time virtual memory allocation + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1998 Ingo Molnar + * + * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999 + */ + +#ifndef _ASM_FIXMAP_H +#define _ASM_FIXMAP_H + +#include +#ifdef CONFIG_HIGHMEM +#include +#include +#endif + +/* + * Here we define all the compile-time 'special' virtual + * addresses. The point is to have a constant address at + * compile time, but to set the physical address only + * in the boot process. We allocate these special addresses + * from the end of the consistent memory region backwards. + * Also this lets us do fail-safe vmalloc(), we + * can guarantee that these special addresses and + * vmalloc()-ed addresses never overlap. + * + * these 'compile-time allocated' memory buffers are + * fixed-size 4k pages. (or larger if used with an increment + * higher than 1) use fixmap_set(idx,phys) to associate + * physical memory with fixmap indices. + */ +enum fixed_addresses { +#ifdef CONFIG_HIGHMEM + /* reserved pte's for temporary kernel mappings */ + FIX_KMAP_BEGIN, + FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1, +#endif + __end_of_fixed_addresses +}; + +#define FIXADDR_TOP (VMALLOC_START - PAGE_SIZE) +#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) +#define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) + +#include + +#define kmap_get_fixmap_pte(vaddr) \ + pte_offset_kernel( \ + pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), \ + (vaddr) \ + ) + +#endif diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index 80be15124697..2653ef5d55f1 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -6,11 +6,54 @@ * this archive for more details. * * Copyright (C) 2003 - 2005 Tensilica Inc. + * Copyright (C) 2014 Cadence Design Systems Inc. */ #ifndef _XTENSA_HIGHMEM_H #define _XTENSA_HIGHMEM_H -extern void flush_cache_kmaps(void); +#include +#include +#include +#include + +#define PKMAP_BASE (FIXADDR_START - PMD_SIZE) +#define LAST_PKMAP PTRS_PER_PTE +#define LAST_PKMAP_MASK (LAST_PKMAP - 1) +#define PKMAP_NR(virt) (((virt) - PKMAP_BASE) >> PAGE_SHIFT) +#define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) + +#define kmap_prot PAGE_KERNEL + +extern pte_t *pkmap_page_table; + +void *kmap_high(struct page *page); +void kunmap_high(struct page *page); + +static inline void *kmap(struct page *page) +{ + BUG_ON(in_interrupt()); + if (!PageHighMem(page)) + return page_address(page); + return kmap_high(page); +} + +static inline void kunmap(struct page *page) +{ + BUG_ON(in_interrupt()); + if (!PageHighMem(page)) + return; + kunmap_high(page); +} + +static inline void flush_cache_kmaps(void) +{ + flush_cache_all(); +} + +void *kmap_atomic(struct page *page); +void __kunmap_atomic(void *kvaddr); + +void kmap_init(void); #endif diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 216446295ada..4b0ca35a93b1 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -310,6 +310,10 @@ set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pteval) update_pte(ptep, pteval); } +static inline void set_pte(pte_t *ptep, pte_t pteval) +{ + update_pte(ptep, pteval); +} static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval) diff --git a/arch/xtensa/mm/Makefile b/arch/xtensa/mm/Makefile index f0b646d2f843..f54f78e24d7b 100644 --- a/arch/xtensa/mm/Makefile +++ b/arch/xtensa/mm/Makefile @@ -4,3 +4,4 @@ obj-y := init.o cache.o misc.o obj-$(CONFIG_MMU) += fault.o mmu.o tlb.o +obj-$(CONFIG_HIGHMEM) += highmem.o diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c index ba4c47f291b1..63cbb867dadd 100644 --- a/arch/xtensa/mm/cache.c +++ b/arch/xtensa/mm/cache.c @@ -59,6 +59,10 @@ * */ +#if (DCACHE_WAY_SIZE > PAGE_SIZE) && defined(CONFIG_HIGHMEM) +#error "HIGHMEM is not supported on cores with aliasing cache." +#endif + #if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK /* @@ -179,10 +183,11 @@ update_mmu_cache(struct vm_area_struct * vma, unsigned long addr, pte_t *ptep) #else if (!PageReserved(page) && !test_bit(PG_arch_1, &page->flags) && (vma->vm_flags & VM_EXEC) != 0) { - unsigned long paddr = (unsigned long) page_address(page); + unsigned long paddr = (unsigned long)kmap_atomic(page); __flush_dcache_page(paddr); __invalidate_icache_page(paddr); set_bit(PG_arch_1, &page->flags); + kunmap_atomic((void *)paddr); } #endif } diff --git a/arch/xtensa/mm/highmem.c b/arch/xtensa/mm/highmem.c new file mode 100644 index 000000000000..17a8c0d6fd17 --- /dev/null +++ b/arch/xtensa/mm/highmem.c @@ -0,0 +1,72 @@ +/* + * High memory support for Xtensa architecture + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of + * this archive for more details. + * + * Copyright (C) 2014 Cadence Design Systems Inc. + */ + +#include +#include +#include + +static pte_t *kmap_pte; + +void *kmap_atomic(struct page *page) +{ + enum fixed_addresses idx; + unsigned long vaddr; + int type; + + pagefault_disable(); + if (!PageHighMem(page)) + return page_address(page); + + type = kmap_atomic_idx_push(); + idx = type + KM_TYPE_NR * smp_processor_id(); + vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); +#ifdef CONFIG_DEBUG_HIGHMEM + BUG_ON(!pte_none(*(kmap_pte - idx))); +#endif + set_pte(kmap_pte - idx, mk_pte(page, PAGE_KERNEL_EXEC)); + + return (void *)vaddr; +} +EXPORT_SYMBOL(kmap_atomic); + +void __kunmap_atomic(void *kvaddr) +{ + int idx, type; + + if (kvaddr >= (void *)FIXADDR_START && + kvaddr < (void *)FIXADDR_TOP) { + type = kmap_atomic_idx(); + idx = type + KM_TYPE_NR * smp_processor_id(); + + /* + * Force other mappings to Oops if they'll try to access this + * pte without first remap it. Keeping stale mappings around + * is a bad idea also, in case the page changes cacheability + * attributes or becomes a protected page in a hypervisor. + */ + pte_clear(&init_mm, kvaddr, kmap_pte - idx); + local_flush_tlb_kernel_range((unsigned long)kvaddr, + (unsigned long)kvaddr + PAGE_SIZE); + + kmap_atomic_idx_pop(); + } + + pagefault_enable(); +} +EXPORT_SYMBOL(__kunmap_atomic); + +void __init kmap_init(void) +{ + unsigned long kmap_vstart; + + /* cache the first kmap pte */ + kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN); + kmap_pte = kmap_get_fixmap_pte(kmap_vstart); +} diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 03bd025307e3..4224256bb215 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -296,19 +297,13 @@ void __init bootmem_init(void) void __init zones_init(void) { - unsigned long zones_size[MAX_NR_ZONES]; - int i; - /* All pages are DMA-able, so we put them all in the DMA zone. */ - - zones_size[ZONE_DMA] = max_low_pfn - ARCH_PFN_OFFSET; - for (i = 1; i < MAX_NR_ZONES; i++) - zones_size[i] = 0; - + unsigned long zones_size[MAX_NR_ZONES] = { + [ZONE_DMA] = max_low_pfn - ARCH_PFN_OFFSET, #ifdef CONFIG_HIGHMEM - zones_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn; + [ZONE_HIGHMEM] = max_pfn - max_low_pfn, #endif - + }; free_area_init_node(0, zones_size, ARCH_PFN_OFFSET, NULL); } @@ -318,16 +313,38 @@ void __init zones_init(void) void __init mem_init(void) { - max_mapnr = max_low_pfn - ARCH_PFN_OFFSET; - high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT); - #ifdef CONFIG_HIGHMEM -#error HIGHGMEM not implemented in init.c + unsigned long tmp; + + reset_all_zones_managed_pages(); + for (tmp = max_low_pfn; tmp < max_pfn; tmp++) + free_highmem_page(pfn_to_page(tmp)); #endif + max_mapnr = max_pfn - ARCH_PFN_OFFSET; + high_memory = (void *)__va(max_low_pfn << PAGE_SHIFT); + free_all_bootmem(); mem_init_print_info(NULL); + pr_info("virtual kernel memory layout:\n" +#ifdef CONFIG_HIGHMEM + " pkmap : 0x%08lx - 0x%08lx (%5lu kB)\n" + " fixmap : 0x%08lx - 0x%08lx (%5lu kB)\n" +#endif + " vmalloc : 0x%08x - 0x%08x (%5u MB)\n" + " lowmem : 0x%08x - 0x%08lx (%5lu MB)\n", +#ifdef CONFIG_HIGHMEM + PKMAP_BASE, PKMAP_BASE + LAST_PKMAP * PAGE_SIZE, + (LAST_PKMAP*PAGE_SIZE) >> 10, + FIXADDR_START, FIXADDR_TOP, + (FIXADDR_TOP - FIXADDR_START) >> 10, +#endif + VMALLOC_START, VMALLOC_END, + (VMALLOC_END - VMALLOC_START) >> 20, + PAGE_OFFSET, PAGE_OFFSET + + (max_low_pfn - min_low_pfn) * PAGE_SIZE, + ((max_low_pfn - min_low_pfn) * PAGE_SIZE) >> 20); } #ifdef CONFIG_BLK_DEV_INITRD diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c index 861203e958da..3429b483d9f8 100644 --- a/arch/xtensa/mm/mmu.c +++ b/arch/xtensa/mm/mmu.c @@ -3,6 +3,7 @@ * * Extracted from init.c */ +#include #include #include #include @@ -16,9 +17,44 @@ #include #include +#if defined(CONFIG_HIGHMEM) +static void * __init init_pmd(unsigned long vaddr) +{ + pgd_t *pgd = pgd_offset_k(vaddr); + pmd_t *pmd = pmd_offset(pgd, vaddr); + + if (pmd_none(*pmd)) { + unsigned i; + pte_t *pte = alloc_bootmem_low_pages(PAGE_SIZE); + + for (i = 0; i < 1024; i++) + pte_clear(NULL, 0, pte + i); + + set_pmd(pmd, __pmd(((unsigned long)pte) & PAGE_MASK)); + BUG_ON(pte != pte_offset_kernel(pmd, 0)); + pr_debug("%s: vaddr: 0x%08lx, pmd: 0x%p, pte: 0x%p\n", + __func__, vaddr, pmd, pte); + return pte; + } else { + return pte_offset_kernel(pmd, 0); + } +} + +static void __init fixedrange_init(void) +{ + BUILD_BUG_ON(FIXADDR_SIZE > PMD_SIZE); + init_pmd(__fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK); +} +#endif + void __init paging_init(void) { memset(swapper_pg_dir, 0, PAGE_SIZE); +#ifdef CONFIG_HIGHMEM + fixedrange_init(); + pkmap_page_table = init_pmd(PKMAP_BASE); + kmap_init(); +#endif } /* From 08a7bbf624072bed1cb35e5b4db7d538580f731c Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 23 Feb 2014 03:48:32 +0400 Subject: [PATCH 024/623] xtensa: xtfpga: introduce SoC I/O bus Signed-off-by: Max Filippov --- arch/xtensa/boot/dts/xtfpga-flash-16m.dtsi | 48 +++++++++++----------- arch/xtensa/boot/dts/xtfpga-flash-4m.dtsi | 32 ++++++++------- arch/xtensa/boot/dts/xtfpga.dtsi | 37 ++++++++++------- 3 files changed, 64 insertions(+), 53 deletions(-) diff --git a/arch/xtensa/boot/dts/xtfpga-flash-16m.dtsi b/arch/xtensa/boot/dts/xtfpga-flash-16m.dtsi index e5703c7beeb6..1d97203c18e7 100644 --- a/arch/xtensa/boot/dts/xtfpga-flash-16m.dtsi +++ b/arch/xtensa/boot/dts/xtfpga-flash-16m.dtsi @@ -1,26 +1,28 @@ / { - flash: flash@f8000000 { - #address-cells = <1>; - #size-cells = <1>; - compatible = "cfi-flash"; - reg = <0xf8000000 0x01000000>; - bank-width = <2>; - device-width = <2>; - partition@0x0 { - label = "boot loader area"; - reg = <0x00000000 0x00400000>; + soc { + flash: flash@08000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x08000000 0x01000000>; + bank-width = <2>; + device-width = <2>; + partition@0x0 { + label = "boot loader area"; + reg = <0x00000000 0x00400000>; + }; + partition@0x400000 { + label = "kernel image"; + reg = <0x00400000 0x00600000>; + }; + partition@0xa00000 { + label = "data"; + reg = <0x00a00000 0x005e0000>; + }; + partition@0xfe0000 { + label = "boot environment"; + reg = <0x00fe0000 0x00020000>; + }; }; - partition@0x400000 { - label = "kernel image"; - reg = <0x00400000 0x00600000>; - }; - partition@0xa00000 { - label = "data"; - reg = <0x00a00000 0x005e0000>; - }; - partition@0xfe0000 { - label = "boot environment"; - reg = <0x00fe0000 0x00020000>; - }; - }; + }; }; diff --git a/arch/xtensa/boot/dts/xtfpga-flash-4m.dtsi b/arch/xtensa/boot/dts/xtfpga-flash-4m.dtsi index 6f9c10d6b689..d1c621ca8be1 100644 --- a/arch/xtensa/boot/dts/xtfpga-flash-4m.dtsi +++ b/arch/xtensa/boot/dts/xtfpga-flash-4m.dtsi @@ -1,18 +1,20 @@ / { - flash: flash@f8000000 { - #address-cells = <1>; - #size-cells = <1>; - compatible = "cfi-flash"; - reg = <0xf8000000 0x00400000>; - bank-width = <2>; - device-width = <2>; - partition@0x0 { - label = "boot loader area"; - reg = <0x00000000 0x003f0000>; + soc { + flash: flash@08000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x08000000 0x00400000>; + bank-width = <2>; + device-width = <2>; + partition@0x0 { + label = "boot loader area"; + reg = <0x00000000 0x003f0000>; + }; + partition@0x3f0000 { + label = "boot environment"; + reg = <0x003f0000 0x00010000>; + }; }; - partition@0x3f0000 { - label = "boot environment"; - reg = <0x003f0000 0x00010000>; - }; - }; + }; }; diff --git a/arch/xtensa/boot/dts/xtfpga.dtsi b/arch/xtensa/boot/dts/xtfpga.dtsi index e7370b11348e..dec9178840f6 100644 --- a/arch/xtensa/boot/dts/xtfpga.dtsi +++ b/arch/xtensa/boot/dts/xtfpga.dtsi @@ -42,21 +42,28 @@ }; }; - serial0: serial@fd050020 { - device_type = "serial"; - compatible = "ns16550a"; - no-loopback-test; - reg = <0xfd050020 0x20>; - reg-shift = <2>; - interrupts = <0 1>; /* external irq 0 */ - clocks = <&osc>; - }; + soc { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges = <0x00000000 0xf0000000 0x10000000>; - enet0: ethoc@fd030000 { - compatible = "opencores,ethoc"; - reg = <0xfd030000 0x4000 0xfd800000 0x4000>; - interrupts = <1 1>; /* external irq 1 */ - local-mac-address = [00 50 c2 13 6f 00]; - clocks = <&osc>; + serial0: serial@0d050020 { + device_type = "serial"; + compatible = "ns16550a"; + no-loopback-test; + reg = <0x0d050020 0x20>; + reg-shift = <2>; + interrupts = <0 1>; /* external irq 0 */ + clocks = <&osc>; + }; + + enet0: ethoc@0d030000 { + compatible = "opencores,ethoc"; + reg = <0x0d030000 0x4000 0x0d800000 0x4000>; + interrupts = <1 1>; /* external irq 1 */ + local-mac-address = [00 50 c2 13 6f 00]; + clocks = <&osc>; + }; }; }; From 9c602629e34bad88a464e08de08118e80beee0d8 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 28 Apr 2013 19:15:56 +0400 Subject: [PATCH 025/623] xtensa: add support for KC705 Signed-off-by: Max Filippov --- arch/xtensa/boot/dts/kc705.dts | 11 ++++++++ arch/xtensa/boot/dts/xtfpga-flash-128m.dtsi | 28 +++++++++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 arch/xtensa/boot/dts/kc705.dts create mode 100644 arch/xtensa/boot/dts/xtfpga-flash-128m.dtsi diff --git a/arch/xtensa/boot/dts/kc705.dts b/arch/xtensa/boot/dts/kc705.dts new file mode 100644 index 000000000000..742a347be67a --- /dev/null +++ b/arch/xtensa/boot/dts/kc705.dts @@ -0,0 +1,11 @@ +/dts-v1/; +/include/ "xtfpga.dtsi" +/include/ "xtfpga-flash-128m.dtsi" + +/ { + compatible = "cdns,xtensa-kc705"; + memory@0 { + device_type = "memory"; + reg = <0x00000000 0x08000000>; + }; +}; diff --git a/arch/xtensa/boot/dts/xtfpga-flash-128m.dtsi b/arch/xtensa/boot/dts/xtfpga-flash-128m.dtsi new file mode 100644 index 000000000000..d3a88e029873 --- /dev/null +++ b/arch/xtensa/boot/dts/xtfpga-flash-128m.dtsi @@ -0,0 +1,28 @@ +/ { + soc { + flash: flash@00000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x00000000 0x08000000>; + bank-width = <2>; + device-width = <2>; + partition@0x0 { + label = "data"; + reg = <0x00000000 0x06000000>; + }; + partition@0x6000000 { + label = "boot loader area"; + reg = <0x06000000 0x00800000>; + }; + partition@0x6800000 { + label = "kernel image"; + reg = <0x06800000 0x017e0000>; + }; + partition@0x7fe0000 { + label = "boot environment"; + reg = <0x07fe0000 0x00020000>; + }; + }; + }; +}; From 666525dfbdca09bbd4848ac711e4a4dbd6921325 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 7 Apr 2014 10:18:56 -0400 Subject: [PATCH 026/623] ext4: fix 64-bit number truncation warning '0x7FDEADBEEF' will be truncated to 32-bit number under unicore32. Need append 'ULL' for it. The related warning (with allmodconfig under unicore32): CC [M] fs/ext4/extents_status.o fs/ext4/extents_status.c: In function "__es_remove_extent": fs/ext4/extents_status.c:813: warning: integer constant is too large for "long" type Signed-off-by: Chen Gang Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents_status.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 0a014a7194b2..0ebc21204b51 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -810,7 +810,7 @@ retry: newes.es_lblk = end + 1; newes.es_len = len2; - block = 0x7FDEADBEEF; + block = 0x7FDEADBEEFULL; if (ext4_es_is_written(&orig_es) || ext4_es_is_unwritten(&orig_es)) block = ext4_es_pblock(&orig_es) + From 4adb6ab3e0fa71363a5ef229544b2d17de6600d7 Mon Sep 17 00:00:00 2001 From: Kazuya Mio Date: Mon, 7 Apr 2014 10:53:28 -0400 Subject: [PATCH 027/623] ext4: FIBMAP ioctl causes BUG_ON due to handle EXT_MAX_BLOCKS When we try to get 2^32-1 block of the file which has the extent (ee_block=2^32-2, ee_len=1) with FIBMAP ioctl, it causes BUG_ON in ext4_ext_put_gap_in_cache(). To avoid the problem, ext4_map_blocks() needs to check the file logical block number. ext4_ext_put_gap_in_cache() called via ext4_map_blocks() cannot handle 2^32-1 because the maximum file logical block number is 2^32-2. Note that ext4_ind_map_blocks() returns -EIO when the block number is invalid. So ext4_map_blocks() should also return the same errno. Signed-off-by: Kazuya Mio Signed-off-by: "Theodore Ts'o" Cc: stable@vger.kernel.org --- fs/ext4/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5b0d2c7d5408..93f16c5e8a8e 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -522,6 +522,10 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, if (unlikely(map->m_len > INT_MAX)) map->m_len = INT_MAX; + /* We can handle the block number less than EXT_MAX_BLOCKS */ + if (unlikely(map->m_lblk >= EXT_MAX_BLOCKS)) + return -EIO; + /* Lookup extent status tree firstly */ if (ext4_es_lookup_extent(inode, map->m_lblk, &es)) { ext4_es_lru_add(inode); From 007649375f6af242d5b1df2c15996949714303ba Mon Sep 17 00:00:00 2001 From: Azat Khuzhin Date: Mon, 7 Apr 2014 10:54:20 -0400 Subject: [PATCH 028/623] ext4: initialize multi-block allocator before checking block descriptors With EXT4FS_DEBUG ext4_count_free_clusters() will call ext4_read_block_bitmap() without s_group_info initialized, so we need to initialize multi-block allocator before. And dependencies that must be solved, to allow this: - multi-block allocator needs in group descriptors - need to install s_op before initializing multi-block allocator, because in ext4_mb_init_backend() new inode is created. - initialize number of group desc blocks (s_gdb_count) otherwise number of clusters returned by ext4_free_clusters_after_init() is not correct. (see ext4_bg_num_gdb_nometa()) Here is the stack backtrace: (gdb) bt #0 ext4_get_group_info (group=0, sb=0xffff880079a10000) at ext4.h:2430 #1 ext4_validate_block_bitmap (sb=sb@entry=0xffff880079a10000, desc=desc@entry=0xffff880056510000, block_group=block_group@entry=0, bh=bh@entry=0xffff88007bf2b2d8) at balloc.c:358 #2 0xffffffff81232202 in ext4_wait_block_bitmap (sb=sb@entry=0xffff880079a10000, block_group=block_group@entry=0, bh=bh@entry=0xffff88007bf2b2d8) at balloc.c:476 #3 0xffffffff81232eaf in ext4_read_block_bitmap (sb=sb@entry=0xffff880079a10000, block_group=block_group@entry=0) at balloc.c:489 #4 0xffffffff81232fc0 in ext4_count_free_clusters (sb=sb@entry=0xffff880079a10000) at balloc.c:665 #5 0xffffffff81259ffa in ext4_check_descriptors (first_not_zeroed=, sb=0xffff880079a10000) at super.c:2143 #6 ext4_fill_super (sb=sb@entry=0xffff880079a10000, data=, data@entry=0x0 , silent=silent@entry=0) at super.c:3851 ... Signed-off-by: Azat Khuzhin Signed-off-by: "Theodore Ts'o" --- fs/ext4/super.c | 51 ++++++++++++++++++++++++++----------------------- 1 file changed, 27 insertions(+), 24 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f3c667091618..6f9e6fadac04 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3869,19 +3869,38 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) goto failed_mount2; } } + + /* + * set up enough so that it can read an inode, + * and create new inode for buddy allocator + */ + sbi->s_gdb_count = db_count; + if (!test_opt(sb, NOLOAD) && + EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) + sb->s_op = &ext4_sops; + else + sb->s_op = &ext4_nojournal_sops; + + ext4_ext_init(sb); + err = ext4_mb_init(sb); + if (err) { + ext4_msg(sb, KERN_ERR, "failed to initialize mballoc (%d)", + err); + goto failed_mount2; + } + if (!ext4_check_descriptors(sb, &first_not_zeroed)) { ext4_msg(sb, KERN_ERR, "group descriptors corrupted!"); - goto failed_mount2; + goto failed_mount2a; } if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) if (!ext4_fill_flex_info(sb)) { ext4_msg(sb, KERN_ERR, "unable to initialize " "flex_bg meta info!"); - goto failed_mount2; + goto failed_mount2a; } - sbi->s_gdb_count = db_count; get_random_bytes(&sbi->s_next_generation, sizeof(u32)); spin_lock_init(&sbi->s_next_gen_lock); @@ -3916,14 +3935,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_stripe = ext4_get_stripe_size(sbi); sbi->s_extent_max_zeroout_kb = 32; - /* - * set up enough so that it can read an inode - */ - if (!test_opt(sb, NOLOAD) && - EXT4_HAS_COMPAT_FEATURE(sb, EXT4_FEATURE_COMPAT_HAS_JOURNAL)) - sb->s_op = &ext4_sops; - else - sb->s_op = &ext4_nojournal_sops; sb->s_export_op = &ext4_export_ops; sb->s_xattr = ext4_xattr_handlers; #ifdef CONFIG_QUOTA @@ -4113,21 +4124,13 @@ no_journal: if (err) { ext4_msg(sb, KERN_ERR, "failed to reserve %llu clusters for " "reserved pool", ext4_calculate_resv_clusters(sb)); - goto failed_mount4a; + goto failed_mount5; } err = ext4_setup_system_zone(sb); if (err) { ext4_msg(sb, KERN_ERR, "failed to initialize system " "zone (%d)", err); - goto failed_mount4a; - } - - ext4_ext_init(sb); - err = ext4_mb_init(sb); - if (err) { - ext4_msg(sb, KERN_ERR, "failed to initialize mballoc (%d)", - err); goto failed_mount5; } @@ -4204,11 +4207,8 @@ failed_mount8: failed_mount7: ext4_unregister_li_request(sb); failed_mount6: - ext4_mb_release(sb); -failed_mount5: - ext4_ext_release(sb); ext4_release_system_zone(sb); -failed_mount4a: +failed_mount5: dput(sb->s_root); sb->s_root = NULL; failed_mount4: @@ -4232,11 +4232,14 @@ failed_mount3: percpu_counter_destroy(&sbi->s_extent_cache_cnt); if (sbi->s_mmp_tsk) kthread_stop(sbi->s_mmp_tsk); +failed_mount2a: + ext4_mb_release(sb); failed_mount2: for (i = 0; i < db_count; i++) brelse(sbi->s_group_desc[i]); ext4_kvfree(sbi->s_group_desc); failed_mount: + ext4_ext_release(sb); if (sbi->s_chksum_driver) crypto_free_shash(sbi->s_chksum_driver); if (sbi->s_proc) { From 9503c67c93ed0b95ba62d12d1fd09da6245dbdd6 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Mon, 7 Apr 2014 10:54:20 -0400 Subject: [PATCH 029/623] ext4: note the error in ext4_end_bio() ext4_end_bio() currently throws away the error that it receives. Chances are this is part of a spate of errors, one of which will end up getting the error returned to userspace somehow, but we shouldn't take that risk. Also print out the errno to aid in debug. Signed-off-by: Matthew Wilcox Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara Cc: stable@vger.kernel.org --- fs/ext4/page-io.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index ab95508e3d40..c18d95b50540 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -308,13 +308,14 @@ static void ext4_end_bio(struct bio *bio, int error) if (error) { struct inode *inode = io_end->inode; - ext4_warning(inode->i_sb, "I/O error writing to inode %lu " + ext4_warning(inode->i_sb, "I/O error %d writing to inode %lu " "(offset %llu size %ld starting block %llu)", - inode->i_ino, + error, inode->i_ino, (unsigned long long) io_end->offset, (long) io_end->size, (unsigned long long) bi_sector >> (inode->i_blkbits - 9)); + mapping_set_error(inode->i_mapping, error); } if (io_end->flag & EXT4_IO_END_UNWRITTEN) { From ec4cb1aa2b7bae18dd8164f2e9c7c51abcf61280 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 7 Apr 2014 10:54:21 -0400 Subject: [PATCH 030/623] ext4: fix jbd2 warning under heavy xattr load When heavily exercising xattr code the assertion that jbd2_journal_dirty_metadata() shouldn't return error was triggered: WARNING: at /srv/autobuild-ceph/gitbuilder.git/build/fs/jbd2/transaction.c:1237 jbd2_journal_dirty_metadata+0x1ba/0x260() CPU: 0 PID: 8877 Comm: ceph-osd Tainted: G W 3.10.0-ceph-00049-g68d04c9 #1 Hardware name: Dell Inc. PowerEdge R410/01V648, BIOS 1.6.3 02/07/2011 ffffffff81a1d3c8 ffff880214469928 ffffffff816311b0 ffff880214469968 ffffffff8103fae0 ffff880214469958 ffff880170a9dc30 ffff8802240fbe80 0000000000000000 ffff88020b366000 ffff8802256e7510 ffff880214469978 Call Trace: [] dump_stack+0x19/0x1b [] warn_slowpath_common+0x70/0xa0 [] warn_slowpath_null+0x1a/0x20 [] jbd2_journal_dirty_metadata+0x1ba/0x260 [] __ext4_handle_dirty_metadata+0xa3/0x140 [] ext4_xattr_release_block+0x103/0x1f0 [] ext4_xattr_block_set+0x1e0/0x910 [] ext4_xattr_set_handle+0x38b/0x4a0 [] ? trace_hardirqs_on+0xd/0x10 [] ext4_xattr_set+0xc2/0x140 [] ext4_xattr_user_set+0x47/0x50 [] generic_setxattr+0x6e/0x90 [] __vfs_setxattr_noperm+0x7b/0x1c0 [] vfs_setxattr+0xc4/0xd0 [] setxattr+0x13e/0x1e0 [] ? __sb_start_write+0xe7/0x1b0 [] ? mnt_want_write_file+0x28/0x60 [] ? fget_light+0x3c/0x130 [] ? mnt_want_write_file+0x28/0x60 [] ? __mnt_want_write+0x58/0x70 [] SyS_fsetxattr+0xbe/0x100 [] system_call_fastpath+0x16/0x1b The reason for the warning is that buffer_head passed into jbd2_journal_dirty_metadata() didn't have journal_head attached. This is caused by the following race of two ext4_xattr_release_block() calls: CPU1 CPU2 ext4_xattr_release_block() ext4_xattr_release_block() lock_buffer(bh); /* False */ if (BHDR(bh)->h_refcount == cpu_to_le32(1)) } else { le32_add_cpu(&BHDR(bh)->h_refcount, -1); unlock_buffer(bh); lock_buffer(bh); /* True */ if (BHDR(bh)->h_refcount == cpu_to_le32(1)) get_bh(bh); ext4_free_blocks() ... jbd2_journal_forget() jbd2_journal_unfile_buffer() -> JH is gone error = ext4_handle_dirty_xattr_block(handle, inode, bh); -> triggers the warning We fix the problem by moving ext4_handle_dirty_xattr_block() under the buffer lock. Sadly this cannot be done in nojournal mode as that function can call sync_dirty_buffer() which would deadlock. Luckily in nojournal mode the race is harmless (we only dirty already freed buffer) and thus for nojournal mode we leave the dirtying outside of the buffer lock. Reported-by: Sage Weil Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" Cc: stable@vger.kernel.org --- fs/ext4/xattr.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 1f5cf5880718..4eec399ec807 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -520,8 +520,8 @@ static void ext4_xattr_update_super_block(handle_t *handle, } /* - * Release the xattr block BH: If the reference count is > 1, decrement - * it; otherwise free the block. + * Release the xattr block BH: If the reference count is > 1, decrement it; + * otherwise free the block. */ static void ext4_xattr_release_block(handle_t *handle, struct inode *inode, @@ -542,16 +542,31 @@ ext4_xattr_release_block(handle_t *handle, struct inode *inode, if (ce) mb_cache_entry_free(ce); get_bh(bh); + unlock_buffer(bh); ext4_free_blocks(handle, inode, bh, 0, 1, EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET); - unlock_buffer(bh); } else { le32_add_cpu(&BHDR(bh)->h_refcount, -1); if (ce) mb_cache_entry_release(ce); + /* + * Beware of this ugliness: Releasing of xattr block references + * from different inodes can race and so we have to protect + * from a race where someone else frees the block (and releases + * its journal_head) before we are done dirtying the buffer. In + * nojournal mode this race is harmless and we actually cannot + * call ext4_handle_dirty_xattr_block() with locked buffer as + * that function can call sync_dirty_buffer() so for that case + * we handle the dirtying after unlocking the buffer. + */ + if (ext4_handle_valid(handle)) + error = ext4_handle_dirty_xattr_block(handle, inode, + bh); unlock_buffer(bh); - error = ext4_handle_dirty_xattr_block(handle, inode, bh); + if (!ext4_handle_valid(handle)) + error = ext4_handle_dirty_xattr_block(handle, inode, + bh); if (IS_SYNC(inode)) ext4_handle_sync(handle); dquot_free_block(inode, EXT4_C2B(EXT4_SB(inode->i_sb), 1)); From 0d606c08f44a09e3ca86d4af1a40aec61a6e9dde Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sat, 22 Mar 2014 13:45:58 +0100 Subject: [PATCH 031/623] ARM: Kirkwood: Fix Atmel vendor prefix The documented vendor prefix for Atmel is 'atmel' not 'at' as used in these .dts[i] files. The i2c framework actually ignores the prefix, so making this change does not cause compatibility issues. Signed-off-by: Andrew Lunn Link: https://lkml.kernel.org/r/1395492360-1865-4-git-send-email-andrew@lunn.ch Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood-laplug.dts | 2 +- arch/arm/boot/dts/kirkwood-ns2-common.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/kirkwood-laplug.dts b/arch/arm/boot/dts/kirkwood-laplug.dts index c9e82eff9bf2..6761ffa2c4ab 100644 --- a/arch/arm/boot/dts/kirkwood-laplug.dts +++ b/arch/arm/boot/dts/kirkwood-laplug.dts @@ -48,7 +48,7 @@ status = "okay"; eeprom@50 { - compatible = "at,24c04"; + compatible = "atmel,24c04"; pagesize = <16>; reg = <0x50>; }; diff --git a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi index 743152f31a81..843eb478b3e4 100644 --- a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi +++ b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi @@ -50,7 +50,7 @@ status = "okay"; eeprom@50 { - compatible = "at,24c04"; + compatible = "atmel,24c04"; pagesize = <16>; reg = <0x50>; }; From dcdf9cfc4868878957d5c372f82b233143ec4320 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sat, 22 Mar 2014 13:46:00 +0100 Subject: [PATCH 032/623] ARM: Kirkwood: DT: Add missing vendor prefix Add vendor prefixes to compatible strings where they are missing. Both the I2C and MTD framework ignore the prefix, so adding them has no effect on backwards compatibility. Signed-off-by: Andrew Lunn Link: https://lkml.kernel.org/r/1395492360-1865-6-git-send-email-andrew@lunn.ch Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood-b3.dts | 2 +- arch/arm/boot/dts/kirkwood-cloudbox.dts | 2 +- arch/arm/boot/dts/kirkwood-dreamplug.dts | 2 +- arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts | 2 +- arch/arm/boot/dts/kirkwood-ns2-common.dtsi | 2 +- arch/arm/boot/dts/kirkwood-nsa310.dts | 2 +- arch/arm/boot/dts/kirkwood-nsa310a.dts | 2 +- arch/arm/boot/dts/kirkwood-openblocks_a6.dts | 2 +- arch/arm/boot/dts/kirkwood-openblocks_a7.dts | 2 +- 9 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/arm/boot/dts/kirkwood-b3.dts b/arch/arm/boot/dts/kirkwood-b3.dts index 40791053106b..6becedebaa4e 100644 --- a/arch/arm/boot/dts/kirkwood-b3.dts +++ b/arch/arm/boot/dts/kirkwood-b3.dts @@ -75,7 +75,7 @@ m25p16@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "m25p16"; + compatible = "st,m25p16"; reg = <0>; spi-max-frequency = <40000000>; mode = <0>; diff --git a/arch/arm/boot/dts/kirkwood-cloudbox.dts b/arch/arm/boot/dts/kirkwood-cloudbox.dts index 0e06fd3cee4d..3b62aeeaa3a2 100644 --- a/arch/arm/boot/dts/kirkwood-cloudbox.dts +++ b/arch/arm/boot/dts/kirkwood-cloudbox.dts @@ -46,7 +46,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "mx25l4005a"; + compatible = "mxicy,mx25l4005a"; reg = <0>; spi-max-frequency = <20000000>; mode = <0>; diff --git a/arch/arm/boot/dts/kirkwood-dreamplug.dts b/arch/arm/boot/dts/kirkwood-dreamplug.dts index ef3463e0ae19..28b3ee369778 100644 --- a/arch/arm/boot/dts/kirkwood-dreamplug.dts +++ b/arch/arm/boot/dts/kirkwood-dreamplug.dts @@ -43,7 +43,7 @@ m25p40@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "mx25l1606e"; + compatible = "mxicy,mx25l1606e"; reg = <0>; spi-max-frequency = <50000000>; mode = <0>; diff --git a/arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts b/arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts index dc86429756d7..25cbaaae142e 100644 --- a/arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts +++ b/arch/arm/boot/dts/kirkwood-mv88f6281gtw-ge.dts @@ -56,7 +56,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "mx25l12805d"; + compatible = "mxicy,mx25l12805d"; reg = <0>; spi-max-frequency = <50000000>; mode = <0>; diff --git a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi index 843eb478b3e4..e6e5ec4fe6b9 100644 --- a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi +++ b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi @@ -32,7 +32,7 @@ flash@0 { #address-cells = <1>; #size-cells = <1>; - compatible = "mx25l4005a"; + compatible = "mxicy,mx25l4005a"; reg = <0>; spi-max-frequency = <20000000>; mode = <0>; diff --git a/arch/arm/boot/dts/kirkwood-nsa310.dts b/arch/arm/boot/dts/kirkwood-nsa310.dts index 03fa24cf3344..0a07af9d8e58 100644 --- a/arch/arm/boot/dts/kirkwood-nsa310.dts +++ b/arch/arm/boot/dts/kirkwood-nsa310.dts @@ -104,7 +104,7 @@ status = "okay"; adt7476: adt7476a@2e { - compatible = "adt7476"; + compatible = "adi,adt7476"; reg = <0x2e>; }; }; diff --git a/arch/arm/boot/dts/kirkwood-nsa310a.dts b/arch/arm/boot/dts/kirkwood-nsa310a.dts index a5e779452867..27ca6a79c48a 100644 --- a/arch/arm/boot/dts/kirkwood-nsa310a.dts +++ b/arch/arm/boot/dts/kirkwood-nsa310a.dts @@ -94,7 +94,7 @@ status = "okay"; lm85: lm85@2e { - compatible = "lm85"; + compatible = "national,lm85"; reg = <0x2e>; }; }; diff --git a/arch/arm/boot/dts/kirkwood-openblocks_a6.dts b/arch/arm/boot/dts/kirkwood-openblocks_a6.dts index b88da9392c32..0650beafc1de 100644 --- a/arch/arm/boot/dts/kirkwood-openblocks_a6.dts +++ b/arch/arm/boot/dts/kirkwood-openblocks_a6.dts @@ -40,7 +40,7 @@ pinctrl-names = "default"; s35390a: s35390a@30 { - compatible = "s35390a"; + compatible = "sii,s35390a"; reg = <0x30>; }; }; diff --git a/arch/arm/boot/dts/kirkwood-openblocks_a7.dts b/arch/arm/boot/dts/kirkwood-openblocks_a7.dts index b2f7cae06839..38520a287514 100644 --- a/arch/arm/boot/dts/kirkwood-openblocks_a7.dts +++ b/arch/arm/boot/dts/kirkwood-openblocks_a7.dts @@ -52,7 +52,7 @@ pinctrl-names = "default"; s24c02: s24c02@50 { - compatible = "24c02"; + compatible = "atmel,24c02"; reg = <0x50>; }; }; From a6e03dd451c724f785277d8ecca5d1a0b886d892 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 26 Mar 2014 00:33:58 +0100 Subject: [PATCH 033/623] ARM: mvebu: ensure the mdio node has a clock reference on Armada 370/XP The mvmdio driver accesses some register of the Ethernet unit. It therefore takes a reference and enables a clock. However, on Armada 370/XP, no clock specification was given in the Device Tree, which leads the mvmdio driver to fail when being used as a module and loaded before the mvneta driver: it tries to access a register from a hardware unit that isn't clocked. Cc: stable@vger.kernel.org Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1395790439-21332-2-git-send-email-thomas.petazzoni@free-electrons.com Acked-by: Andrew Lunn Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-xp.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi index bbb40f62037d..bb77970c0b12 100644 --- a/arch/arm/boot/dts/armada-370-xp.dtsi +++ b/arch/arm/boot/dts/armada-370-xp.dtsi @@ -230,6 +230,7 @@ #size-cells = <0>; compatible = "marvell,orion-mdio"; reg = <0x72004 0x4>; + clocks = <&gateclk 4>; }; eth1: ethernet@74000 { From 33faf20b8ebe2770f2d7b52796f5f35eeb87ab6f Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 26 Mar 2014 00:33:59 +0100 Subject: [PATCH 034/623] ARM: mvebu: ensure the mdio node has a clock reference on Armada 38x The mvmdio driver accesses some register of the Ethernet unit. It therefore takes a reference and enables a clock. However, on Armada 38x, no clock specification was given in the Device Tree, which leads the mvmdio driver to fail when being used as a module and loaded before the mvneta driver: it tries to access a register from a hardware unit that isn't clocked. Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1395790439-21332-3-git-send-email-thomas.petazzoni@free-electrons.com Acked-by: Andrew Lunn Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-38x.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index a064f59da02d..ca8813bb99ba 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -336,6 +336,7 @@ #size-cells = <0>; compatible = "marvell,orion-mdio"; reg = <0x72004 0x4>; + clocks = <&gateclk 4>; }; coredivclk: clock@e4250 { From b08eed0c4d7d70eae2f4f1ff518cc33643722a07 Mon Sep 17 00:00:00 2001 From: Rob Taylor Date: Mon, 7 Apr 2014 20:16:52 +0100 Subject: [PATCH 035/623] ARM: shmobile: lager: correct renesas,gpios to renesas,groups in sd[02] pfc Fix probable typo of renesas,groups in the lager dt. The kernel has no renesas,gpios but this should match renesas,groups. Signed-off-by: Rob Taylor [ben.dooks@codethink.co.uk: fixup description] Signed-off-by: Ben Dooks Acked-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790-lager.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index 6e99eb2df076..d01048ab3e77 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -141,12 +141,12 @@ }; sdhi0_pins: sd0 { - renesas,gpios = "sdhi0_data4", "sdhi0_ctrl"; + renesas,groups = "sdhi0_data4", "sdhi0_ctrl"; renesas,function = "sdhi0"; }; sdhi2_pins: sd2 { - renesas,gpios = "sdhi2_data4", "sdhi2_ctrl"; + renesas,groups = "sdhi2_data4", "sdhi2_ctrl"; renesas,function = "sdhi2"; }; From f5f85ee065f2e243f4165d7dd7d1a4a95daa1801 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Tue, 8 Apr 2014 11:06:26 +0200 Subject: [PATCH 036/623] ata: fix i.MX AHCI driver dependencies The ahci_imx driver is only needed on Freescale i.MX platforms so don't let it be built on other platforms, except for build test purpose. Signed-off-by: Jean Delvare Cc: Tejun Heo Cc: Richard Zhu Signed-off-by: Tejun Heo --- drivers/ata/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 2e4da3bc47fc..c2706047337f 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -116,7 +116,7 @@ config AHCI_ST config AHCI_IMX tristate "Freescale i.MX AHCI SATA support" - depends on MFD_SYSCON + depends on MFD_SYSCON && (ARCH_MXC || COMPILE_TEST) help This option enables support for the Freescale i.MX SoC's onboard AHCI SATA. From 5e3283e2920a0bd8a806964d80274b8756e0dd7f Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Tue, 8 Apr 2014 11:08:41 +0100 Subject: [PATCH 037/623] dm thin: irqsave must always be used with the pool->lock spinlock Commit c140e1c4e23 ("dm thin: use per thin device deferred bio lists") incorrectly stopped disabling irqs when taking the pool's spinlock. Irqs must be disabled when taking the pool's spinlock otherwise a thread could spin_lock(), then get interrupted to service thin_endio() in interrupt context, which would then deadlock in spin_lock_irqsave(). Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer --- drivers/md/dm-thin.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 53728be84dee..ae5fd0b9c75c 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -3101,6 +3101,7 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) struct thin_c *tc; struct dm_dev *pool_dev, *origin_dev; struct mapped_device *pool_md; + unsigned long flags; mutex_lock(&dm_thin_pool_table.mutex); @@ -3191,9 +3192,9 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) mutex_unlock(&dm_thin_pool_table.mutex); - spin_lock(&tc->pool->lock); + spin_lock_irqsave(&tc->pool->lock, flags); list_add_tail_rcu(&tc->list, &tc->pool->active_thins); - spin_unlock(&tc->pool->lock); + spin_unlock_irqrestore(&tc->pool->lock, flags); /* * This synchronize_rcu() call is needed here otherwise we risk a * wake_worker() call finding no bios to process (because the newly From b10ebd34cccae1b431caf1be54919aede2be7cbe Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Tue, 8 Apr 2014 11:29:01 +0100 Subject: [PATCH 038/623] dm thin: fix rcu_read_lock being held in code that can sleep Commit c140e1c4e23 ("dm thin: use per thin device deferred bio lists") introduced the use of an rculist for all active thin devices. The use of rcu_read_lock() in process_deferred_bios() can result in a BUG if a dm_bio_prison_cell must be allocated as a side-effect of bio_detain(): BUG: sleeping function called from invalid context at mm/mempool.c:203 in_atomic(): 1, irqs_disabled(): 0, pid: 6, name: kworker/u8:0 3 locks held by kworker/u8:0/6: #0: ("dm-" "thin"){.+.+..}, at: [] process_one_work+0x192/0x550 #1: ((&pool->worker)){+.+...}, at: [] process_one_work+0x192/0x550 #2: (rcu_read_lock){.+.+..}, at: [] do_worker+0x5/0x4d0 We can't process deferred bios with the rcu lock held, since dm_bio_prison_cell allocation may block if the bio-prison's cell mempool is exhausted. To fix: - Introduce a refcount and completion field to each thin_c - Add thin_get/put methods for adjusting the refcount. If the refcount hits zero then the completion is triggered. - Initialise refcount to 1 when creating thin_c - When iterating the active_thins list we thin_get() whilst the rcu lock is held. - After the rcu lock is dropped we process the deferred bios for that thin. - When destroying a thin_c we thin_put() and then wait for the completion -- to avoid a race between the worker thread iterating from that thin_c and destroying the thin_c. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer --- drivers/md/dm-thin.c | 70 ++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 67 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index ae5fd0b9c75c..28fc282b61b2 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -232,6 +232,13 @@ struct thin_c { struct bio_list deferred_bio_list; struct bio_list retry_on_resume_list; struct rb_root sort_bio_list; /* sorted list of deferred bios */ + + /* + * Ensures the thin is not destroyed until the worker has finished + * iterating the active_thins list. + */ + atomic_t refcount; + struct completion can_destroy; }; /*----------------------------------------------------------------*/ @@ -1486,6 +1493,45 @@ static void process_thin_deferred_bios(struct thin_c *tc) blk_finish_plug(&plug); } +static void thin_get(struct thin_c *tc); +static void thin_put(struct thin_c *tc); + +/* + * We can't hold rcu_read_lock() around code that can block. So we + * find a thin with the rcu lock held; bump a refcount; then drop + * the lock. + */ +static struct thin_c *get_first_thin(struct pool *pool) +{ + struct thin_c *tc = NULL; + + rcu_read_lock(); + if (!list_empty(&pool->active_thins)) { + tc = list_entry_rcu(pool->active_thins.next, struct thin_c, list); + thin_get(tc); + } + rcu_read_unlock(); + + return tc; +} + +static struct thin_c *get_next_thin(struct pool *pool, struct thin_c *tc) +{ + struct thin_c *old_tc = tc; + + rcu_read_lock(); + list_for_each_entry_continue_rcu(tc, &pool->active_thins, list) { + thin_get(tc); + thin_put(old_tc); + rcu_read_unlock(); + return tc; + } + thin_put(old_tc); + rcu_read_unlock(); + + return NULL; +} + static void process_deferred_bios(struct pool *pool) { unsigned long flags; @@ -1493,10 +1539,11 @@ static void process_deferred_bios(struct pool *pool) struct bio_list bios; struct thin_c *tc; - rcu_read_lock(); - list_for_each_entry_rcu(tc, &pool->active_thins, list) + tc = get_first_thin(pool); + while (tc) { process_thin_deferred_bios(tc); - rcu_read_unlock(); + tc = get_next_thin(pool, tc); + } /* * If there are any deferred flush bios, we must commit @@ -3061,11 +3108,25 @@ static struct target_type pool_target = { /*---------------------------------------------------------------- * Thin target methods *--------------------------------------------------------------*/ +static void thin_get(struct thin_c *tc) +{ + atomic_inc(&tc->refcount); +} + +static void thin_put(struct thin_c *tc) +{ + if (atomic_dec_and_test(&tc->refcount)) + complete(&tc->can_destroy); +} + static void thin_dtr(struct dm_target *ti) { struct thin_c *tc = ti->private; unsigned long flags; + thin_put(tc); + wait_for_completion(&tc->can_destroy); + spin_lock_irqsave(&tc->pool->lock, flags); list_del_rcu(&tc->list); spin_unlock_irqrestore(&tc->pool->lock, flags); @@ -3192,6 +3253,9 @@ static int thin_ctr(struct dm_target *ti, unsigned argc, char **argv) mutex_unlock(&dm_thin_pool_table.mutex); + atomic_set(&tc->refcount, 1); + init_completion(&tc->can_destroy); + spin_lock_irqsave(&tc->pool->lock, flags); list_add_tail_rcu(&tc->list, &tc->pool->active_thins); spin_unlock_irqrestore(&tc->pool->lock, flags); From 87f7e41636ff201148443551d06bc74497160aac Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Tue, 8 Apr 2014 11:38:28 -0400 Subject: [PATCH 039/623] ext4: update PF_MEMALLOC handling in ext4_write_inode() The special handling of PF_MEMALLOC callers in ext4_write_inode() shouldn't be necessary as there shouldn't be any. Warn about it. Also update comment before the function as it seems somewhat outdated. (Changes modeled on an ext3 patch posted by Jan Kara to the linux-ext4 mailing list on Februaryt 28, 2014, which apparently never went into the ext3 tree.) Signed-off-by: "Theodore Ts'o" Cc: Jan Kara --- fs/ext4/inode.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 93f16c5e8a8e..7b93df9aa182 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4427,21 +4427,20 @@ out_brelse: * * We are called from a few places: * - * - Within generic_file_write() for O_SYNC files. + * - Within generic_file_aio_write() -> generic_write_sync() for O_SYNC files. * Here, there will be no transaction running. We wait for any running * transaction to commit. * - * - Within sys_sync(), kupdate and such. - * We wait on commit, if tol to. + * - Within flush work (sys_sync(), kupdate and such). + * We wait on commit, if told to. * - * - Within prune_icache() (PF_MEMALLOC == true) - * Here we simply return. We can't afford to block kswapd on the - * journal commit. + * - Within iput_final() -> write_inode_now() + * We wait on commit, if told to. * * In all cases it is actually safe for us to return without doing anything, * because the inode has been copied into a raw inode buffer in - * ext4_mark_inode_dirty(). This is a correctness thing for O_SYNC and for - * knfsd. + * ext4_mark_inode_dirty(). This is a correctness thing for WB_SYNC_ALL + * writeback. * * Note that we are absolutely dependent upon all inode dirtiers doing the * right thing: they *must* call mark_inode_dirty() after dirtying info in @@ -4453,15 +4452,15 @@ out_brelse: * stuff(); * inode->i_size = expr; * - * is in error because a kswapd-driven write_inode() could occur while - * `stuff()' is running, and the new i_size will be lost. Plus the inode - * will no longer be on the superblock's dirty inode list. + * is in error because write_inode() could occur while `stuff()' is running, + * and the new i_size will be lost. Plus the inode will no longer be on the + * superblock's dirty inode list. */ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc) { int err; - if (current->flags & PF_MEMALLOC) + if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) return 0; if (EXT4_SB(inode->i_sb)->s_journal) { From cfe8255f0afcf5d2d1dbfa093223cafe38773fa7 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 10 Apr 2014 02:40:00 +0400 Subject: [PATCH 040/623] xtensa: xt2000: drop redundant sysmem initialization sysmem structure initialization in xt2000 platform_init is identical to the one done in init_arch just before the call to platform_init. Signed-off-by: Max Filippov --- arch/xtensa/platforms/xt2000/setup.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c index f9bc87966290..b90555cb8089 100644 --- a/arch/xtensa/platforms/xt2000/setup.c +++ b/arch/xtensa/platforms/xt2000/setup.c @@ -92,18 +92,8 @@ void __init platform_setup(char** cmdline) /* early initialization */ -extern sysmem_info_t __initdata sysmem; - -void platform_init(bp_tag_t* first) +void __init platform_init(bp_tag_t *first) { - /* Set default memory block if not provided by the bootloader. */ - - if (sysmem.nr_banks == 0) { - sysmem.nr_banks = 1; - sysmem.bank[0].start = PLATFORM_DEFAULT_MEM_START; - sysmem.bank[0].end = PLATFORM_DEFAULT_MEM_START - + PLATFORM_DEFAULT_MEM_SIZE; - } } /* Heartbeat. Let the LED blink. */ From 390403fd79821bbd0c3a0d83307df2be87047b36 Mon Sep 17 00:00:00 2001 From: Tero Kristo Date: Thu, 10 Apr 2014 11:01:09 -0700 Subject: [PATCH 041/623] ARM: OMAP3: PM: remove access to PRM_VOLTCTRL register There is a solitary write to this register every wakeup from off-mode, which isn't doing anything, so remove it. Also note that modifying this register trashes any attempted voltage scaling configuration and the change probably should never have gotten merged in the first place. Cc: Nishanth Menon Cc: Kevin Hilman Cc: Paul Walmsley Signed-off-by: Tero Kristo [tony@atomide.com: updated comments to describe regression] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/pm34xx.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 1f3770a8a728..87099bb6de69 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -330,10 +330,6 @@ void omap_sram_idle(void) omap3_sram_restore_context(); omap2_sms_restore_context(); } - if (core_next_state == PWRDM_POWER_OFF) - omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK, - OMAP3430_GR_MOD, - OMAP3_PRM_VOLTCTRL_OFFSET); } omap3_intc_resume_idle(); From 1ce01c4a199c50b023802be25261c0c02b2f0214 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Thu, 10 Apr 2014 22:58:20 -0400 Subject: [PATCH 042/623] ext4: fix COLLAPSE_RANGE test failure in data journalling mode When mounting ext4 with data=journal option, xfstest shared/002 and shared/004 are currently failing as checksum computed for testfile does not match with the checksum computed in other journal modes. In case of data=journal mode, a call to filemap_write_and_wait_range will not flush anything to disk as buffers are not marked dirty in write_end. In collapse range this call is followed by a call to truncate_pagecache_range. Due to this, when checksum is computed, a portion of file is re-read from disk which replace valid data with NULL bytes and hence the reason for the difference in checksum. Calling ext4_force_commit before filemap_write_and_wait_range solves the issue as it will mark the buffers dirty during commit transaction which can be later synced by a call to filemap_write_and_wait_range. Signed-off-by: Namjae Jeon Signed-off-by: Ashish Sangwan Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 82df3ce9874a..be1e56cbbf32 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5383,6 +5383,13 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) punch_start = offset >> EXT4_BLOCK_SIZE_BITS(sb); punch_stop = (offset + len) >> EXT4_BLOCK_SIZE_BITS(sb); + /* Call ext4_force_commit to flush all data in case of data=journal. */ + if (ext4_should_journal_data(inode)) { + ret = ext4_force_commit(inode->i_sb); + if (ret) + return ret; + } + /* Write out all dirty pages */ ret = filemap_write_and_wait_range(inode->i_mapping, offset, -1); if (ret) From c57ab39b9658315a742b6e61fdc86bb4d20cf566 Mon Sep 17 00:00:00 2001 From: Younger Liu Date: Thu, 10 Apr 2014 23:03:43 -0400 Subject: [PATCH 043/623] ext4: return ENOMEM rather than EIO when find_###_page() fails Return ENOMEM rather than EIO when find_get_page() fails in ext4_mb_get_buddy_page_lock() and find_or_create_page() fails in ext4_mb_load_buddy(). Signed-off-by: Younger Liu Signed-off-by: "Theodore Ts'o" --- fs/ext4/mballoc.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index a888cac76e9c..73ccbb3b973b 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -989,7 +989,7 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb, poff = block % blocks_per_page; page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS); if (!page) - return -EIO; + return -ENOMEM; BUG_ON(page->mapping != inode->i_mapping); e4b->bd_bitmap_page = page; e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize); @@ -1003,7 +1003,7 @@ static int ext4_mb_get_buddy_page_lock(struct super_block *sb, pnum = block / blocks_per_page; page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS); if (!page) - return -EIO; + return -ENOMEM; BUG_ON(page->mapping != inode->i_mapping); e4b->bd_buddy_page = page; return 0; @@ -1168,7 +1168,11 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) { + if (page == NULL) { + ret = -ENOMEM; + goto err; + } + if (!PageUptodate(page)) { ret = -EIO; goto err; } @@ -1197,7 +1201,11 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, unlock_page(page); } } - if (page == NULL || !PageUptodate(page)) { + if (page == NULL) { + ret = -ENOMEM; + goto err; + } + if (!PageUptodate(page)) { ret = -EIO; goto err; } From 79861bbb759053a9b91026becc0915d0f1f8d37d Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Thu, 10 Apr 2014 18:16:33 -0700 Subject: [PATCH 044/623] ASoC: rsnd: fix clock prepare/unprepare As with the previous commit, before a clock can be used it must be prepared for use. Change from clk_enable() and clk_disable() to the versions of the calls which also prepare and un-prepare the clocks. Will fix warnings from the clock code when this is used. Signed-off-by: Ben Dooks Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown --- sound/soc/sh/rcar/src.c | 4 ++-- sound/soc/sh/rcar/ssi.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c index 6232b7d307aa..4d0720ed5a90 100644 --- a/sound/soc/sh/rcar/src.c +++ b/sound/soc/sh/rcar/src.c @@ -258,7 +258,7 @@ static int rsnd_src_init(struct rsnd_mod *mod, { struct rsnd_src *src = rsnd_mod_to_src(mod); - clk_enable(src->clk); + clk_prepare_enable(src->clk); return 0; } @@ -269,7 +269,7 @@ static int rsnd_src_quit(struct rsnd_mod *mod, { struct rsnd_src *src = rsnd_mod_to_src(mod); - clk_disable(src->clk); + clk_disable_unprepare(src->clk); return 0; } diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 4b7e20603dd7..1d8387c25bd8 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -171,7 +171,7 @@ static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi, u32 cr; if (0 == ssi->usrcnt) { - clk_enable(ssi->clk); + clk_prepare_enable(ssi->clk); if (rsnd_dai_is_clk_master(rdai)) { if (rsnd_ssi_clk_from_parent(ssi)) @@ -230,7 +230,7 @@ static void rsnd_ssi_hw_stop(struct rsnd_ssi *ssi, rsnd_ssi_master_clk_stop(ssi); } - clk_disable(ssi->clk); + clk_disable_unprepare(ssi->clk); } dev_dbg(dev, "ssi%d hw stopped\n", rsnd_mod_id(&ssi->mod)); From 622cad1325e404598fe3b148c3fa640dbaabc235 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Fri, 11 Apr 2014 10:35:17 -0400 Subject: [PATCH 045/623] ext4: move ext4_update_i_disksize() into mpage_map_and_submit_extent() The function ext4_update_i_disksize() is used in only one place, in the function mpage_map_and_submit_extent(). Move its code to simplify the code paths, and also move the call to ext4_mark_inode_dirty() into the i_data_sem's critical region, to be consistent with all of the other places where we update i_disksize. That way, we also keep the raw_inode's i_disksize protected, to avoid the following race: CPU #1 CPU #2 down_write(&i_data_sem) Modify i_disk_size up_write(&i_data_sem) down_write(&i_data_sem) Modify i_disk_size Copy i_disk_size to on-disk inode up_write(&i_data_sem) Copy i_disk_size to on-disk inode Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara Cc: stable@vger.kernel.org --- fs/ext4/ext4.h | 17 ----------------- fs/ext4/inode.c | 14 ++++++++++++-- 2 files changed, 12 insertions(+), 19 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index f1c65dc7cc0a..66946aa62127 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2466,23 +2466,6 @@ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize) up_write(&EXT4_I(inode)->i_data_sem); } -/* - * Update i_disksize after writeback has been started. Races with truncate - * are avoided by checking i_size under i_data_sem. - */ -static inline void ext4_wb_update_i_disksize(struct inode *inode, loff_t newsize) -{ - loff_t i_size; - - down_write(&EXT4_I(inode)->i_data_sem); - i_size = i_size_read(inode); - if (newsize > i_size) - newsize = i_size; - if (newsize > EXT4_I(inode)->i_disksize) - EXT4_I(inode)->i_disksize = newsize; - up_write(&EXT4_I(inode)->i_data_sem); -} - struct ext4_group_info { unsigned long bb_state; struct rb_root bb_free_root; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 7b93df9aa182..f023f0cb46fc 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2247,13 +2247,23 @@ static int mpage_map_and_submit_extent(handle_t *handle, return err; } while (map->m_len); - /* Update on-disk size after IO is submitted */ + /* + * Update on-disk size after IO is submitted. Races with + * truncate are avoided by checking i_size under i_data_sem. + */ disksize = ((loff_t)mpd->first_page) << PAGE_CACHE_SHIFT; if (disksize > EXT4_I(inode)->i_disksize) { int err2; + loff_t i_size; - ext4_wb_update_i_disksize(inode, disksize); + down_write(&EXT4_I(inode)->i_data_sem); + i_size = i_size_read(inode); + if (disksize > i_size) + disksize = i_size; + if (disksize > EXT4_I(inode)->i_disksize) + EXT4_I(inode)->i_disksize = disksize; err2 = ext4_mark_inode_dirty(handle, inode); + up_write(&EXT4_I(inode)->i_data_sem); if (err2) ext4_error(inode->i_sb, "Failed to mark inode %lu dirty", From c6c56697ae4bf1226263c19e8353343d7083f40e Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Thu, 10 Apr 2014 10:18:17 +0300 Subject: [PATCH 046/623] ARM: OMAP3: hwmod data: Correct clock domains for USB modules OMAP3 doesn't contain "l3_init_clkdm" clock domain. Use the proper clock domains for USB Host and USB TLL modules. Gets rid of the following warnings during boot omap_hwmod: usb_host_hs: could not associate to clkdm l3_init_clkdm omap_hwmod: usb_tll_hs: could not associate to clkdm l3_init_clkdm Reported-by: Nishanth Menon Cc: Paul Walmsley Signed-off-by: Roger Quadros Fixes: de231388cb80a8ef3e779bbfa0564ba0157b7377 ("ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP3") Cc: Keshava Munegowda Cc: Partha Basak Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index a123ff0070bd..71ac7d5f3385 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -1964,7 +1964,7 @@ static struct omap_hwmod_irq_info omap3xxx_usb_host_hs_irqs[] = { static struct omap_hwmod omap3xxx_usb_host_hs_hwmod = { .name = "usb_host_hs", .class = &omap3xxx_usb_host_hs_hwmod_class, - .clkdm_name = "l3_init_clkdm", + .clkdm_name = "usbhost_clkdm", .mpu_irqs = omap3xxx_usb_host_hs_irqs, .main_clk = "usbhost_48m_fck", .prcm = { @@ -2047,7 +2047,7 @@ static struct omap_hwmod_irq_info omap3xxx_usb_tll_hs_irqs[] = { static struct omap_hwmod omap3xxx_usb_tll_hs_hwmod = { .name = "usb_tll_hs", .class = &omap3xxx_usb_tll_hs_hwmod_class, - .clkdm_name = "l3_init_clkdm", + .clkdm_name = "core_l4_clkdm", .mpu_irqs = omap3xxx_usb_tll_hs_irqs, .main_clk = "usbtll_fck", .prcm = { From 8e4cb9aac2ada7f8a986606703c34e2d573bb876 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 24 Mar 2014 16:31:52 +0530 Subject: [PATCH 047/623] ARM: AM43xx: fix dpll init in bypass mode On AM43xx, if a PLL is in bypass at kernel init, the code in omap2_get_dpll_rate() will not realize this and will try to calculate the clock rate using the multiplier and the divider, resulting in errors. omap2_init_dpll_parent() has similar issue. Add the missing soc_is_am43xx() check to make the code work on AM43xx. Signed-off-by: Tomi Valkeinen Signed-off-by: Sathya Prakash M R Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/clkt_dpll.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/clkt_dpll.c b/arch/arm/mach-omap2/clkt_dpll.c index 2649ce445845..332af927f4d3 100644 --- a/arch/arm/mach-omap2/clkt_dpll.c +++ b/arch/arm/mach-omap2/clkt_dpll.c @@ -209,7 +209,7 @@ u8 omap2_init_dpll_parent(struct clk_hw *hw) if (v == OMAP3XXX_EN_DPLL_LPBYPASS || v == OMAP3XXX_EN_DPLL_FRBYPASS) return 1; - } else if (soc_is_am33xx() || cpu_is_omap44xx()) { + } else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) { if (v == OMAP4XXX_EN_DPLL_LPBYPASS || v == OMAP4XXX_EN_DPLL_FRBYPASS || v == OMAP4XXX_EN_DPLL_MNBYPASS) @@ -255,7 +255,7 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk) if (v == OMAP3XXX_EN_DPLL_LPBYPASS || v == OMAP3XXX_EN_DPLL_FRBYPASS) return __clk_get_rate(dd->clk_bypass); - } else if (soc_is_am33xx() || cpu_is_omap44xx()) { + } else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) { if (v == OMAP4XXX_EN_DPLL_LPBYPASS || v == OMAP4XXX_EN_DPLL_FRBYPASS || v == OMAP4XXX_EN_DPLL_MNBYPASS) From 3d36ad7e7a9be0d130c862727a052ed279046437 Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Fri, 14 Mar 2014 14:45:17 +0530 Subject: [PATCH 048/623] ARM: OMAP2+: hwmod: fix missing braces in _init() Bug was introduced by commit 'f92d959: ARM: OMAP2+: hwmod: Extract no-idle and no-reset info from DT' There were 2 versions of the patch posted which resulted in the above commit. While v1 [1] had the bug, v2 [2] had it fixed. However v1 apparently seemed to have been pulled in by mistake introducing the bug. Given of_find_property() does return NULL when the node passed is NULL, it did not introduce any functional issues as such, just the fact that the second if check was executed unnecessarily. [1] https://www.mail-archive.com/linux-omap@vger.kernel.org/msg94220.html [2] http://www.spinics.net/lists/linux-omap/msg98490.html Cc: Nishanth Menon Signed-off-by: Rajendra Nayak Signed-off-by: Suman Anna Signed-off-by: Lokesh Vutla Fixes: f92d9597f781f6a5a39c73dc71604bd8a21c5299 ("ARM: OMAP2+: hwmod: Extract no-idle and no-reset info from DT") Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 1f33f5db10d5..66c60fe1104c 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -2546,11 +2546,12 @@ static int __init _init(struct omap_hwmod *oh, void *data) return -EINVAL; } - if (np) + if (np) { if (of_find_property(np, "ti,no-reset-on-init", NULL)) oh->flags |= HWMOD_INIT_NO_RESET; if (of_find_property(np, "ti,no-idle-on-init", NULL)) oh->flags |= HWMOD_INIT_NO_IDLE; + } oh->_state = _HWMOD_STATE_INITIALIZED; From 9ef06cec7c96f6bf59f1dd8b64b9645820099051 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sat, 12 Apr 2014 09:47:00 -0400 Subject: [PATCH 049/623] ext4: remove unnecessary check for APPEND and IMMUTABLE All the checks IS_APPEND and IS_IMMUTABLE for the fallocate operation on the inode are done in vfs. No need to do this again in ext4. Remove it. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 6 ------ fs/ext4/inode.c | 6 +----- 2 files changed, 1 insertion(+), 11 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index be1e56cbbf32..ed4ec48239b6 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5398,12 +5398,6 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) /* Take mutex lock */ mutex_lock(&inode->i_mutex); - /* It's not possible punch hole on append only file */ - if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) { - ret = -EPERM; - goto out_mutex; - } - if (IS_SWAPFILE(inode)) { ret = -ETXTBSY; goto out_mutex; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index f023f0cb46fc..e2bba76f0d7b 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3541,11 +3541,7 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) } mutex_lock(&inode->i_mutex); - /* It's not possible punch hole on append only file */ - if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) { - ret = -EPERM; - goto out_mutex; - } + if (IS_SWAPFILE(inode)) { ret = -ETXTBSY; goto out_mutex; From 8fc61d92630d1c96057a94c61e1643475045b25b Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sat, 12 Apr 2014 09:51:34 -0400 Subject: [PATCH 050/623] fs: prevent doing FALLOC_FL_ZERO_RANGE on append only file Currently punch hole and collapse range fallocate operation are not allowed on append only file. This should be case for zero range as well. Fix it by allowing only pure fallocate (possibly with keep size set). Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/open.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/open.c b/fs/open.c index 631aea815def..3a83253d3373 100644 --- a/fs/open.c +++ b/fs/open.c @@ -254,11 +254,9 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) return -EBADF; /* - * It's not possible to punch hole or perform collapse range - * on append only file + * We can only allow pure fallocate on append only files */ - if (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE) - && IS_APPEND(inode)) + if ((mode & ~FALLOC_FL_KEEP_SIZE) && IS_APPEND(inode)) return -EPERM; if (IS_IMMUTABLE(inode)) From 23fffa925ea2c9a2bcb1a4453e2c542635aa3545 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sat, 12 Apr 2014 09:56:41 -0400 Subject: [PATCH 051/623] fs: move falloc collapse range check into the filesystem methods Currently in do_fallocate in collapse range case we're checking whether offset + len is not bigger than i_size. However there is nothing which would prevent i_size from changing so the check is pointless. It should be done in the file system itself and the file system needs to make sure that i_size is not going to change. The i_size check for the other fallocate modes are also done in the filesystems. As it is now we can easily crash the kernel by having two processes doing truncate and fallocate collapse range at the same time. This can be reproduced on ext4 and it is theoretically possible on xfs even though I was not able to trigger it with this simple test. This commit removes the check from do_fallocate and adds it to the file system. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" Acked-by: Dave Chinner Reviewed-by: Christoph Hellwig --- fs/ext4/extents.c | 11 +++++++++-- fs/open.c | 8 -------- fs/xfs/xfs_file.c | 10 +++++++++- 3 files changed, 18 insertions(+), 11 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ed4ec48239b6..ac5460d0d133 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5368,8 +5368,6 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) loff_t new_size; int ret; - BUG_ON(offset + len > i_size_read(inode)); - /* Collapse range works only on fs block size aligned offsets. */ if (offset & (EXT4_BLOCK_SIZE(sb) - 1) || len & (EXT4_BLOCK_SIZE(sb) - 1)) @@ -5398,6 +5396,15 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) /* Take mutex lock */ mutex_lock(&inode->i_mutex); + /* + * There is no need to overlap collapse range with EOF, in which case + * it is effectively a truncate operation + */ + if (offset + len >= i_size_read(inode)) { + ret = -EINVAL; + goto out_mutex; + } + if (IS_SWAPFILE(inode)) { ret = -ETXTBSY; goto out_mutex; diff --git a/fs/open.c b/fs/open.c index 3a83253d3373..adf34202213a 100644 --- a/fs/open.c +++ b/fs/open.c @@ -284,14 +284,6 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (((offset + len) > inode->i_sb->s_maxbytes) || ((offset + len) < 0)) return -EFBIG; - /* - * There is no need to overlap collapse range with EOF, in which case - * it is effectively a truncate operation - */ - if ((mode & FALLOC_FL_COLLAPSE_RANGE) && - (offset + len >= i_size_read(inode))) - return -EINVAL; - if (!file->f_op->fallocate) return -EOPNOTSUPP; diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index f7abff8c16ca..3cb528c4f27c 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -840,7 +840,15 @@ xfs_file_fallocate( goto out_unlock; } - ASSERT(offset + len < i_size_read(inode)); + /* + * There is no need to overlap collapse range with EOF, + * in which case it is effectively a truncate operation + */ + if (offset + len >= i_size_read(inode)) { + error = -EINVAL; + goto out_unlock; + } + new_size = i_size_read(inode) - len; error = xfs_collapse_file_space(ip, offset, len); From 0790b31b69374ddadefebb156251b319e5b43345 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sat, 12 Apr 2014 10:05:37 -0400 Subject: [PATCH 052/623] fs: disallow all fallocate operation on active swapfile Currently some file system have IS_SWAPFILE check in their fallocate implementations and some do not. However we should really prevent any fallocate operation on swapfile so move the check to vfs and remove the redundant checks from the file systems fallocate implementations. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ceph/file.c | 3 --- fs/ext4/extents.c | 5 ----- fs/ext4/inode.c | 5 ----- fs/open.c | 7 +++++++ 4 files changed, 7 insertions(+), 13 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 09c7afe32e49..596e6cc9f9c4 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1215,9 +1215,6 @@ static long ceph_fallocate(struct file *file, int mode, if (!S_ISREG(inode->i_mode)) return -EOPNOTSUPP; - if (IS_SWAPFILE(inode)) - return -ETXTBSY; - mutex_lock(&inode->i_mutex); if (ceph_snap(inode) != CEPH_NOSNAP) { diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ac5460d0d133..b2d3869b5762 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5405,11 +5405,6 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) goto out_mutex; } - if (IS_SWAPFILE(inode)) { - ret = -ETXTBSY; - goto out_mutex; - } - /* Currently just for extent based files */ if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) { ret = -EOPNOTSUPP; diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index e2bba76f0d7b..b74cfd2a42ec 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3542,11 +3542,6 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) mutex_lock(&inode->i_mutex); - if (IS_SWAPFILE(inode)) { - ret = -ETXTBSY; - goto out_mutex; - } - /* No need to punch hole beyond i_size */ if (offset >= inode->i_size) goto out_mutex; diff --git a/fs/open.c b/fs/open.c index adf34202213a..7b823daa6a93 100644 --- a/fs/open.c +++ b/fs/open.c @@ -262,6 +262,13 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (IS_IMMUTABLE(inode)) return -EPERM; + /* + * We can not allow to do any fallocate operation on an active + * swapfile + */ + if (IS_SWAPFILE(inode)) + ret = -ETXTBSY; + /* * Revalidate the write permissions, in case security policy has * changed since the files were opened. From 6e6358fc3c3c862bfe9a5bc029d3f8ce43dc9765 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 12 Apr 2014 12:45:25 -0400 Subject: [PATCH 053/623] ext4: use i_size_read in ext4_unaligned_aio() We haven't taken i_mutex yet, so we need to use i_size_read(). Signed-off-by: "Theodore Ts'o" Cc: stable@vger.kernel.org --- fs/ext4/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 6db7f7db7777..bc765591101a 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -82,7 +82,7 @@ ext4_unaligned_aio(struct inode *inode, const struct iovec *iov, size_t count = iov_length(iov, nr_segs); loff_t final_size = pos + count; - if (pos >= inode->i_size) + if (pos >= i_size_read(inode)) return 0; if ((pos & blockmask) || (final_size & blockmask)) From 847c6c422aa0ae81a5517a9558ec2737806dca48 Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Sat, 12 Apr 2014 12:45:55 -0400 Subject: [PATCH 054/623] ext4: fix byte order problems introduced by the COLLAPSE_RANGE patches This commit tries to fix some byte order issues that is found by sparse check. $ make M=fs/ext4 C=2 CF=-D__CHECK_ENDIAN__ ... CHECK fs/ext4/extents.c fs/ext4/extents.c:5232:41: warning: restricted __le32 degrades to integer fs/ext4/extents.c:5236:52: warning: bad assignment (-=) to restricted __le32 fs/ext4/extents.c:5258:45: warning: bad assignment (-=) to restricted __le32 fs/ext4/extents.c:5303:28: warning: restricted __le32 degrades to integer fs/ext4/extents.c:5318:18: warning: incorrect type in assignment (different base types) fs/ext4/extents.c:5318:18: expected unsigned int [unsigned] [usertype] ex_start fs/ext4/extents.c:5318:18: got restricted __le32 [usertype] ee_block fs/ext4/extents.c:5319:24: warning: restricted __le32 degrades to integer fs/ext4/extents.c:5334:31: warning: incorrect type in assignment (different base types) ... Cc: Andreas Dilger Cc: Namjae Jeon Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index b2d3869b5762..f24ef8697609 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5229,11 +5229,11 @@ ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, if (ex_start == EXT_FIRST_EXTENT(path[depth].p_hdr)) update = 1; - *start = ex_last->ee_block + + *start = le32_to_cpu(ex_last->ee_block) + ext4_ext_get_actual_len(ex_last); while (ex_start <= ex_last) { - ex_start->ee_block -= shift; + le32_add_cpu(&ex_start->ee_block, -shift); if (ex_start > EXT_FIRST_EXTENT(path[depth].p_hdr)) { if (ext4_ext_try_to_merge_right(inode, @@ -5255,7 +5255,7 @@ ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, if (err) goto out; - path[depth].p_idx->ei_block -= shift; + le32_add_cpu(&path[depth].p_idx->ei_block, -shift); err = ext4_ext_dirty(handle, inode, path + depth); if (err) goto out; @@ -5300,7 +5300,8 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, return ret; } - stop_block = extent->ee_block + ext4_ext_get_actual_len(extent); + stop_block = le32_to_cpu(extent->ee_block) + + ext4_ext_get_actual_len(extent); ext4_ext_drop_refs(path); kfree(path); @@ -5315,8 +5316,9 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, path = ext4_ext_find_extent(inode, start - 1, NULL, 0); depth = path->p_depth; extent = path[depth].p_ext; - ex_start = extent->ee_block; - ex_end = extent->ee_block + ext4_ext_get_actual_len(extent); + ex_start = le32_to_cpu(extent->ee_block); + ex_end = le32_to_cpu(extent->ee_block) + + ext4_ext_get_actual_len(extent); ext4_ext_drop_refs(path); kfree(path); @@ -5331,7 +5333,7 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, return PTR_ERR(path); depth = path->p_depth; extent = path[depth].p_ext; - current_block = extent->ee_block; + current_block = le32_to_cpu(extent->ee_block); if (start > current_block) { /* Hole, move to the next extent */ ret = mext_next_extent(inode, path, &extent); From 40c406c74eb9eed58ae7d4d12a0197f7279c9499 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Sat, 12 Apr 2014 22:53:53 -0400 Subject: [PATCH 055/623] ext4: COLLAPSE_RANGE only works on extent-based files Unfortunately, we weren't checking to make sure of this the inode was extent-based before attempt operate on it. Hilarity ensues. Signed-off-by: "Theodore Ts'o" Cc: Namjae Jeon --- fs/ext4/extents.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index f24ef8697609..96e0a4bc8faa 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4878,9 +4878,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (mode & FALLOC_FL_PUNCH_HOLE) return ext4_punch_hole(inode, offset, len); - if (mode & FALLOC_FL_COLLAPSE_RANGE) - return ext4_collapse_range(inode, offset, len); - ret = ext4_convert_inline_data(inode); if (ret) return ret; @@ -4892,6 +4889,9 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) return -EOPNOTSUPP; + if (mode & FALLOC_FL_COLLAPSE_RANGE) + return ext4_collapse_range(inode, offset, len); + if (mode & FALLOC_FL_ZERO_RANGE) return ext4_zero_range(file, offset, len, mode); From e2cbd587418251bb73c4c1e8e2c7c1816d7a98d9 Mon Sep 17 00:00:00 2001 From: jon ernst Date: Sat, 12 Apr 2014 23:01:28 -0400 Subject: [PATCH 056/623] ext4: silence sparse check warning for function ext4_trim_extent This fixes the following sparse warning: CHECK fs/ext4/mballoc.c fs/ext4/mballoc.c:5019:9: warning: context imbalance in 'ext4_trim_extent' - unexpected unlock Signed-off-by: "Jon Ernst" Signed-off-by: "Theodore Ts'o" --- fs/ext4/mballoc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 73ccbb3b973b..c8238a26818c 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -5016,6 +5016,8 @@ error_return: */ static int ext4_trim_extent(struct super_block *sb, int start, int count, ext4_group_t group, struct ext4_buddy *e4b) +__releases(bitlock) +__acquires(bitlock) { struct ext4_free_extent ex; int ret = 0; From adeb25905c644350baf1f446bcd856517e58060e Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Wed, 9 Apr 2014 10:20:39 +0800 Subject: [PATCH 057/623] iommu/vt-d: fix memory leakage caused by commit ea8ea46 Commit ea8ea46 "iommu/vt-d: Clean up and fix page table clear/free behaviour" introduces possible leakage of DMA page tables due to: for (pte = page_address(pg); !first_pte_in_page(pte); pte++) { if (dma_pte_present(pte) && !dma_pte_superpage(pte)) freelist = dma_pte_list_pagetables(domain, level - 1, pte, freelist); } For the first pte in a page, first_pte_in_page(pte) will always be true, thus dma_pte_list_pagetables() will never be called and leak DMA page tables if level is bigger than 1. Signed-off-by: Jiang Liu Signed-off-by: David Woodhouse --- drivers/iommu/intel-iommu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 69fa7da5e48b..13dc2318e17a 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1009,11 +1009,13 @@ static struct page *dma_pte_list_pagetables(struct dmar_domain *domain, if (level == 1) return freelist; - for (pte = page_address(pg); !first_pte_in_page(pte); pte++) { + pte = page_address(pg); + do { if (dma_pte_present(pte) && !dma_pte_superpage(pte)) freelist = dma_pte_list_pagetables(domain, level - 1, pte, freelist); - } + pte++; + } while (!first_pte_in_page(pte)); return freelist; } From 8dc79ec4c0537e1b83c0739af82a7babefb30012 Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Sun, 13 Apr 2014 15:05:42 -0400 Subject: [PATCH 058/623] ext4: fix error handling in ext4_ext_shift_extents Fix error handling by adding some. :-) Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 96e0a4bc8faa..38be06354b88 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5314,11 +5314,18 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, * enough to accomodate the shift. */ path = ext4_ext_find_extent(inode, start - 1, NULL, 0); + if (IS_ERR(path)) + return PTR_ERR(path); depth = path->p_depth; extent = path[depth].p_ext; - ex_start = le32_to_cpu(extent->ee_block); - ex_end = le32_to_cpu(extent->ee_block) + + if (extent) { + ex_start = le32_to_cpu(extent->ee_block); + ex_end = le32_to_cpu(extent->ee_block) + ext4_ext_get_actual_len(extent); + } else { + ex_start = 0; + ex_end = 0; + } ext4_ext_drop_refs(path); kfree(path); From a18ed359bdddcded4f97ff5e2f07793ff9336913 Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Sun, 13 Apr 2014 15:41:13 -0400 Subject: [PATCH 059/623] ext4: always check ext4_ext_find_extent result Where are some places where logic guaranties us that extent we are searching exits, but this may not be true due to on-disk data corruption. If such corruption happens we must prevent possible null pointer dereferences. Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 38be06354b88..64b400356cad 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3313,6 +3313,11 @@ static int ext4_split_extent(handle_t *handle, return PTR_ERR(path); depth = ext_depth(inode); ex = path[depth].p_ext; + if (!ex) { + EXT4_ERROR_INODE(inode, "unexpected hole at %lu", + (unsigned long) map->m_lblk); + return -EIO; + } uninitialized = ext4_ext_is_uninitialized(ex); split_flag1 = 0; @@ -3694,6 +3699,12 @@ static int ext4_convert_initialized_extents(handle_t *handle, } depth = ext_depth(inode); ex = path[depth].p_ext; + if (!ex) { + EXT4_ERROR_INODE(inode, "unexpected hole at %lu", + (unsigned long) map->m_lblk); + err = -EIO; + goto out; + } } err = ext4_ext_get_access(handle, inode, path + depth); @@ -5340,6 +5351,12 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle, return PTR_ERR(path); depth = path->p_depth; extent = path[depth].p_ext; + if (!extent) { + EXT4_ERROR_INODE(inode, "unexpected hole at %lu", + (unsigned long) start); + return -EIO; + } + current_block = le32_to_cpu(extent->ee_block); if (start > current_block) { /* Hole, move to the next extent */ From 07134a365f1c4be6e840a00ae452d1593f15c5fc Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Wed, 5 Mar 2014 14:25:50 +0100 Subject: [PATCH 060/623] ARM: dts: imx6: add PCIe interrupt mapping properties As defined by the common PCI bindings. Signed-off-by: Lucas Stach Acked-by: Arnd Bergmann Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index 55cb926fa3f7..e27408f5371f 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -10,6 +10,8 @@ * http://www.gnu.org/copyleft/gpl.html */ +#include + #include "skeleton.dtsi" / { @@ -138,6 +140,12 @@ 0x82000000 0 0x01000000 0x01000000 0 0x00f00000>; /* non-prefetchable memory */ num-lanes = <1>; interrupts = <0 123 IRQ_TYPE_LEVEL_HIGH>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0x7>; + interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks 189>, <&clks 187>, <&clks 206>, <&clks 144>; clock-names = "pcie_ref_125m", "sata_ref_100m", "lvds_gate", "pcie_axi"; status = "disabled"; From 2b33319003bfd97decd9b4768ecfe70a6dfdba53 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Fri, 28 Mar 2014 02:09:13 -0300 Subject: [PATCH 061/623] ARM: dts: imx53-qsb-common: Fix memory region description On mx53qsb there are two DRAM chip selects: CS0 at 0x70000000 CS1 at 0xb0000000 Each bank has a 512MB DRAM, giving a total of 1GB of system DRAM. Fix the memory layout to describe the hardware appropriately. Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53-qsb-common.dtsi | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx53-qsb-common.dtsi b/arch/arm/boot/dts/imx53-qsb-common.dtsi index 3f825a6813da..ede04fa4161f 100644 --- a/arch/arm/boot/dts/imx53-qsb-common.dtsi +++ b/arch/arm/boot/dts/imx53-qsb-common.dtsi @@ -14,7 +14,8 @@ / { memory { - reg = <0x70000000 0x40000000>; + reg = <0x70000000 0x20000000>, + <0xb0000000 0x20000000>; }; display0: display@di0 { From 8668d49896cc19354917ff67503e72f3f48ffaaa Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Fri, 28 Mar 2014 02:09:14 -0300 Subject: [PATCH 062/623] ARM: dts: imx53-m53evk: Fix memory region description On m53evk there are two DRAM chip selects: CS0 at 0x70000000 CS1 at 0xb0000000 Each bank has a 512MB DRAM, giving a total of 1GB of system DRAM. Fix the memory layout to describe the hardware appropriately. Signed-off-by: Fabio Estevam Acked-by: Marek Vasut Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53-m53evk.dts | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx53-m53evk.dts b/arch/arm/boot/dts/imx53-m53evk.dts index f6d3ac3e5587..7fa2d1b5d60e 100644 --- a/arch/arm/boot/dts/imx53-m53evk.dts +++ b/arch/arm/boot/dts/imx53-m53evk.dts @@ -17,7 +17,8 @@ compatible = "denx,imx53-m53evk", "fsl,imx53"; memory { - reg = <0x70000000 0x20000000>; + reg = <0x70000000 0x20000000>, + <0xb0000000 0x20000000>; }; soc { From 7b6b2f4bf76e72d0599bd0d4ca1c850f8308d50f Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Wed, 2 Apr 2014 19:05:37 +0200 Subject: [PATCH 063/623] ARM: dts: mx5: fix wrong stmpe-ts bindings Fix bindings for STMPE touchscreen controller to match the documented bindings and the actual bindings used by the driver. Signed-off-by: Stefan Agner Reviewed-by: Marek Vasut Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53-m53evk.dts | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/arch/arm/boot/dts/imx53-m53evk.dts b/arch/arm/boot/dts/imx53-m53evk.dts index 7fa2d1b5d60e..d5d146a8b149 100644 --- a/arch/arm/boot/dts/imx53-m53evk.dts +++ b/arch/arm/boot/dts/imx53-m53evk.dts @@ -194,17 +194,17 @@ irq-trigger = <0x1>; stmpe_touchscreen { - compatible = "stmpe,ts"; + compatible = "st,stmpe-ts"; reg = <0>; - ts,sample-time = <4>; - ts,mod-12b = <1>; - ts,ref-sel = <0>; - ts,adc-freq = <1>; - ts,ave-ctrl = <3>; - ts,touch-det-delay = <3>; - ts,settling = <4>; - ts,fraction-z = <7>; - ts,i-drive = <1>; + st,sample-time = <4>; + st,mod-12b = <1>; + st,ref-sel = <0>; + st,adc-freq = <1>; + st,ave-ctrl = <3>; + st,touch-det-delay = <3>; + st,settling = <4>; + st,fraction-z = <7>; + st,i-drive = <1>; }; }; From 54e8eaeec1227a024373e37315770cc79d69917b Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 28 Mar 2014 17:25:51 +0100 Subject: [PATCH 064/623] ARM: dts: imx: drop invalid size and address cells properties Those two properties should have been set to zero, which is the same as not specifying them. Having address-cells set to 1 causes OF interrupt mapping routines to add 1 to the interrupt-cells property and as result fail because all calculations are off by one. Signed-off-by: Lucas Stach Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl.dtsi | 2 -- arch/arm/boot/dts/imx6sl.dtsi | 2 -- 2 files changed, 4 deletions(-) diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index e27408f5371f..2d04a5185fe9 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -48,8 +48,6 @@ intc: interrupt-controller@00a01000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; - #address-cells = <1>; - #size-cells = <1>; interrupt-controller; reg = <0x00a01000 0x1000>, <0x00a00100 0x100>; diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi index 3cb4941afeef..d92df0ab02e4 100644 --- a/arch/arm/boot/dts/imx6sl.dtsi +++ b/arch/arm/boot/dts/imx6sl.dtsi @@ -68,8 +68,6 @@ intc: interrupt-controller@00a01000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; - #address-cells = <1>; - #size-cells = <1>; interrupt-controller; reg = <0x00a01000 0x1000>, <0x00a00100 0x100>; From c2bece3cb1215bdb68f2345f6a9b5d0b27c8724e Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 28 Mar 2014 17:52:52 +0100 Subject: [PATCH 065/623] ARM: imx6q-clk: parent lvds_gate from lvds_sel Allows fror proper refcounting of the parent clocks when enabling the clock output on CLK1/2 pads. Signed-off-by: Lucas Stach Reviewed-by: Marek Vasut Acked-by: Richard Zhu Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index b0e7f9d2c245..3ed67b592b48 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -208,8 +208,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) * the "output_enable" bit as a gate, even though it's really just * enabling clock output. */ - clk[lvds1_gate] = imx_clk_gate("lvds1_gate", "dummy", base + 0x160, 10); - clk[lvds2_gate] = imx_clk_gate("lvds2_gate", "dummy", base + 0x160, 11); + clk[lvds1_gate] = imx_clk_gate("lvds1_gate", "lvds1_sel", base + 0x160, 10); + clk[lvds2_gate] = imx_clk_gate("lvds2_gate", "lvds2_sel", base + 0x160, 11); /* name parent_name reg idx */ clk[pll2_pfd0_352m] = imx_clk_pfd("pll2_pfd0_352m", "pll2_bus", base + 0x100, 0); From 2e3b9650561ae791ca0bd8c5f4868ef4df3cb842 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 6 Apr 2014 23:32:25 +0100 Subject: [PATCH 066/623] ARM: dt: microsom: don't set bit 7 for ethernet mux settings Bit 6,7 are marked as reserved for the ethernet RGMII pins, so avoid setting these bits. Signed-off-by: Russell King Signed-off-by: Shawn Guo --- .../arm/boot/dts/imx6qdl-microsom-ar8035.dtsi | 22 +++++++++---------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi index a3cb2fff8f61..d16066608e21 100644 --- a/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi +++ b/arch/arm/boot/dts/imx6qdl-microsom-ar8035.dtsi @@ -26,25 +26,25 @@ /* GPIO16 -> AR8035 25MHz */ MX6QDL_PAD_GPIO_16__ENET_REF_CLK 0xc0000000 MX6QDL_PAD_RGMII_TXC__RGMII_TXC 0x80000000 - MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b0b0 - MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b0b0 - MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b0b0 - MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b0b0 - MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b0b0 + MX6QDL_PAD_RGMII_TD0__RGMII_TD0 0x1b030 + MX6QDL_PAD_RGMII_TD1__RGMII_TD1 0x1b030 + MX6QDL_PAD_RGMII_TD2__RGMII_TD2 0x1b030 + MX6QDL_PAD_RGMII_TD3__RGMII_TD3 0x1b030 + MX6QDL_PAD_RGMII_TX_CTL__RGMII_TX_CTL 0x1b030 /* AR8035 CLK_25M --> ENET_REF_CLK (V22) */ MX6QDL_PAD_ENET_REF_CLK__ENET_TX_CLK 0x0a0b1 /* AR8035 pin strapping: IO voltage: pull up */ - MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b0b0 + MX6QDL_PAD_RGMII_RXC__RGMII_RXC 0x1b030 /* AR8035 pin strapping: PHYADDR#0: pull down */ - MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x130b0 + MX6QDL_PAD_RGMII_RD0__RGMII_RD0 0x13030 /* AR8035 pin strapping: PHYADDR#1: pull down */ - MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x130b0 + MX6QDL_PAD_RGMII_RD1__RGMII_RD1 0x13030 /* AR8035 pin strapping: MODE#1: pull up */ - MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b0b0 + MX6QDL_PAD_RGMII_RD2__RGMII_RD2 0x1b030 /* AR8035 pin strapping: MODE#3: pull up */ - MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b0b0 + MX6QDL_PAD_RGMII_RD3__RGMII_RD3 0x1b030 /* AR8035 pin strapping: MODE#0: pull down */ - MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x130b0 + MX6QDL_PAD_RGMII_RX_CTL__RGMII_RX_CTL 0x13030 /* * As the RMII pins are also connected to RGMII From 19f7cb6dec7408da8753bf3250098edab60cdbb6 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 7 Apr 2014 16:29:24 +0200 Subject: [PATCH 067/623] ARM: dts: imx6: edmqmx6: Fix usbotg id pin Signed-off-by: Lucas Stach Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts index a63bbb3d46bb..39ffa766384f 100644 --- a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts +++ b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts @@ -293,7 +293,7 @@ pinctrl_usbotg: usbotggrp { fsl,pins = < - MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059 + MX6QDL_PAD_ENET_RX_ER__USB_OTG_ID 0x17059 >; }; From 465ca5dc4ad57b40ea632aabb32bf81a66632c4a Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 7 Apr 2014 16:29:25 +0200 Subject: [PATCH 068/623] ARM: dts: imx6: edmqmx6: Do not use the OTG switch as VBUS regulator GPIO7_12 switches the D+/D- USB lines on and off. When we use this as VBUS regulator it means that USB device mode can never work as VBUS is never turned on in Device mode. Signed-off-by: Sascha Hauer Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts index 39ffa766384f..af32944cf9ae 100644 --- a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts +++ b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts @@ -40,13 +40,15 @@ regulator-always-on; }; - reg_usb_otg_vbus: regulator@1 { + reg_usb_otg_switch: regulator@1 { compatible = "regulator-fixed"; reg = <1>; - regulator-name = "usb_otg_vbus"; + regulator-name = "usb_otg_switch"; regulator-min-microvolt = <5000000>; regulator-max-microvolt = <5000000>; gpio = <&gpio7 12 0>; + regulator-boot-on; + regulator-always-on; }; reg_usb_host1: regulator@2 { @@ -348,7 +350,6 @@ }; &usbotg { - vbus-supply = <®_usb_otg_vbus>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_usbotg>; disable-over-current; From 8dde78e8d62ac5b5b8c07cd965928536c3556bc0 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 7 Apr 2014 16:29:26 +0200 Subject: [PATCH 069/623] ARM: dts: imx6: edmqmx6: USB H1 only supports host mode Signed-off-by: Lucas Stach Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts index af32944cf9ae..e7762e456cbe 100644 --- a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts +++ b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts @@ -346,6 +346,7 @@ &usbh1 { vbus-supply = <®_usb_host1>; disable-over-current; + dr_mode = "host"; status = "okay"; }; From 52d13453df9aef536da6b93c7253fd618292a1cf Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 7 Apr 2014 16:29:27 +0200 Subject: [PATCH 070/623] ARM: dts: imx6: edmqmx6: add second STMPE Signed-off-by: Lucas Stach Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts | 38 +++++++++++++++++++------ 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts index e7762e456cbe..e4ae38fd0269 100644 --- a/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts +++ b/arch/arm/boot/dts/imx6q-dmo-edmqmx6.dts @@ -19,7 +19,10 @@ compatible = "dmo,imx6q-edmqmx6", "fsl,imx6q"; aliases { - gpio7 = &stmpe_gpio; + gpio7 = &stmpe_gpio1; + gpio8 = &stmpe_gpio2; + stmpe-i2c0 = &stmpe1; + stmpe-i2c1 = &stmpe2; }; memory { @@ -67,23 +70,23 @@ led-blue { label = "blue"; - gpios = <&stmpe_gpio 8 GPIO_ACTIVE_HIGH>; + gpios = <&stmpe_gpio1 8 GPIO_ACTIVE_HIGH>; linux,default-trigger = "heartbeat"; }; led-green { label = "green"; - gpios = <&stmpe_gpio 9 GPIO_ACTIVE_HIGH>; + gpios = <&stmpe_gpio1 9 GPIO_ACTIVE_HIGH>; }; led-pink { label = "pink"; - gpios = <&stmpe_gpio 10 GPIO_ACTIVE_HIGH>; + gpios = <&stmpe_gpio1 10 GPIO_ACTIVE_HIGH>; }; led-red { label = "red"; - gpios = <&stmpe_gpio 11 GPIO_ACTIVE_HIGH>; + gpios = <&stmpe_gpio1 11 GPIO_ACTIVE_HIGH>; }; }; }; @@ -101,7 +104,8 @@ clock-frequency = <100000>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i2c2 - &pinctrl_stmpe>; + &pinctrl_stmpe1 + &pinctrl_stmpe2>; status = "okay"; pmic: pfuze100@08 { @@ -207,13 +211,25 @@ }; }; - stmpe: stmpe1601@40 { + stmpe1: stmpe1601@40 { compatible = "st,stmpe1601"; reg = <0x40>; interrupts = <30 0>; interrupt-parent = <&gpio3>; - stmpe_gpio: stmpe_gpio { + stmpe_gpio1: stmpe_gpio { + #gpio-cells = <2>; + compatible = "st,stmpe-gpio"; + }; + }; + + stmpe2: stmpe1601@44 { + compatible = "st,stmpe1601"; + reg = <0x44>; + interrupts = <2 0>; + interrupt-parent = <&gpio5>; + + stmpe_gpio2: stmpe_gpio { #gpio-cells = <2>; compatible = "st,stmpe-gpio"; }; @@ -275,10 +291,14 @@ >; }; - pinctrl_stmpe: stmpegrp { + pinctrl_stmpe1: stmpe1grp { fsl,pins = ; }; + pinctrl_stmpe2: stmpe2grp { + fsl,pins = ; + }; + pinctrl_uart1: uart1grp { fsl,pins = < MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA 0x1b0b1 From 0c658c48cbe952d2689211a09f456d7319e59b33 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 10 Apr 2014 15:14:14 +0800 Subject: [PATCH 071/623] ARM: dts: imx53-tx53: add IPU DI ports and endpoints MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With the recent imx-drm device tree binding changes, we need to add IPU DI ports and endpoints for adapting. Signed-off-by: Shawn Guo Acked-by: Lothar Waßmann --- arch/arm/boot/dts/imx53-tx53-x03x.dts | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx53-tx53-x03x.dts b/arch/arm/boot/dts/imx53-tx53-x03x.dts index 0217dde3b36b..3b73e81dc3f0 100644 --- a/arch/arm/boot/dts/imx53-tx53-x03x.dts +++ b/arch/arm/boot/dts/imx53-tx53-x03x.dts @@ -25,12 +25,17 @@ soc { display: display@di0 { compatible = "fsl,imx-parallel-display"; - crtcs = <&ipu 0>; interface-pix-fmt = "rgb24"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_rgb24_vga1>; status = "okay"; + port { + display0_in: endpoint { + remote-endpoint = <&ipu_di0_disp0>; + }; + }; + display-timings { VGA { clock-frequency = <25200000>; @@ -293,6 +298,10 @@ }; }; +&ipu_di0_disp0 { + remote-endpoint = <&display0_in>; +}; + &kpp { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_kpp>; From 139412290de46a7d4ff3359c8989485840764572 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 10 Apr 2014 15:22:56 +0800 Subject: [PATCH 072/623] ARM: dts: imx6q-gw5xxx: remove dead 'crtcs' property Since commit (655b43c staging: imx-drm-core: Use OF graph to find components and connections between encoder and crtcs), 'crtcs' becomes a dead property. Remove it. Signed-off-by: Shawn Guo Acked-by: Tim Harvey --- arch/arm/boot/dts/imx6q-gw5400-a.dts | 3 --- arch/arm/boot/dts/imx6qdl-gw52xx.dtsi | 3 --- 2 files changed, 6 deletions(-) diff --git a/arch/arm/boot/dts/imx6q-gw5400-a.dts b/arch/arm/boot/dts/imx6q-gw5400-a.dts index 902f98310481..e51bb3f0fd56 100644 --- a/arch/arm/boot/dts/imx6q-gw5400-a.dts +++ b/arch/arm/boot/dts/imx6q-gw5400-a.dts @@ -487,9 +487,6 @@ &ldb { status = "okay"; - lvds-channel@0 { - crtcs = <&ipu1 0>, <&ipu1 1>, <&ipu2 0>, <&ipu2 1>; - }; }; &pcie { diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi index 8e99c9a9bc76..035d3a85c318 100644 --- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi +++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi @@ -436,9 +436,6 @@ &ldb { status = "okay"; - lvds-channel@0 { - crtcs = <&ipu1 0>, <&ipu1 1>; - }; }; &pcie { From fa1746ae3829ed8865a10a7fe3946ef91bddd458 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Date: Thu, 10 Apr 2014 10:03:40 +0200 Subject: [PATCH 073/623] ARM: dts: imx53: fix apparent copy/paste error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The 'remote-endpoint' property should point back to ipu_di1_lvds1 rather than ipu_di0_lvds0. Signed-off-by: Lothar Waßmann Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi index b57ab57740f6..a99b64bfb046 100644 --- a/arch/arm/boot/dts/imx53.dtsi +++ b/arch/arm/boot/dts/imx53.dtsi @@ -430,7 +430,7 @@ port { lvds1_in: endpoint { - remote-endpoint = <&ipu_di0_lvds0>; + remote-endpoint = <&ipu_di1_lvds1>; }; }; }; From 2cd36711e2b9714c0bb500b4060714666f37ca2c Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Fri, 11 Apr 2014 09:09:39 -0300 Subject: [PATCH 074/623] ARM: dts: imx6sl-evk: Add an entry for MX6SL_PAD_ECSPI1_SS0__GPIO4_IO11 In case the bootloader has incorrectly configured the ALT mode of MX6SL_PAD_ECSPI1_SS0 pad, we end up with the following probe error: m25p80 spi0.0: found mr25h256, expected m25p32 m25p80 spi0.0: mr25h256 (32 Kbytes) In order to avoid this issue, add an entry for MX6SL_PAD_ECSPI1_SS0 pad, so that kernel configures the ECSPI chip select as GPIO functionality, which results in correct SPI NOR probe. Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6sl-evk.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/imx6sl-evk.dts b/arch/arm/boot/dts/imx6sl-evk.dts index 864d8dfb51ca..a8d9a93fab85 100644 --- a/arch/arm/boot/dts/imx6sl-evk.dts +++ b/arch/arm/boot/dts/imx6sl-evk.dts @@ -282,6 +282,7 @@ MX6SL_PAD_ECSPI1_MISO__ECSPI1_MISO 0x100b1 MX6SL_PAD_ECSPI1_MOSI__ECSPI1_MOSI 0x100b1 MX6SL_PAD_ECSPI1_SCLK__ECSPI1_SCLK 0x100b1 + MX6SL_PAD_ECSPI1_SS0__GPIO4_IO11 0x80000000 >; }; From 308965f94d00b670ca3a0f799839a68412da34d9 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Fri, 11 Apr 2014 16:59:38 +0200 Subject: [PATCH 075/623] ARM: dts: vybrid: drop address and size cells from GIC node This is likely a copy-and-paste error from the ARM GIC documentation, that has already been fixed. address-cells should have been set to 0, as with the size cells. As having those properties set to 0 is the same thing as not specifying them, drop them completely. Signed-off-by: Lucas Stach Acked-by: Rob Herring Signed-off-by: Shawn Guo --- arch/arm/boot/dts/vf610.dtsi | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi index 804873367669..bb78e901ed5d 100644 --- a/arch/arm/boot/dts/vf610.dtsi +++ b/arch/arm/boot/dts/vf610.dtsi @@ -72,8 +72,6 @@ intc: interrupt-controller@40002000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; - #address-cells = <1>; - #size-cells = <1>; interrupt-controller; reg = <0x40003000 0x1000>, <0x40002100 0x100>; From 4b2b404309f90e1ba12b0b187ca2490be19a22a6 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 11 Apr 2014 09:56:46 +0800 Subject: [PATCH 076/623] ARM: dts: imx: add required #clock-cells for fixed-clock Per bindings of fixed-clock, #clock-cells is a required property. Let's add it for those fixed rate clocks. Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx25.dtsi | 1 + arch/arm/boot/dts/imx27-apf27.dts | 1 + arch/arm/boot/dts/imx27.dtsi | 1 + arch/arm/boot/dts/imx50.dtsi | 4 ++++ arch/arm/boot/dts/imx51.dtsi | 4 ++++ arch/arm/boot/dts/imx53.dtsi | 4 ++++ arch/arm/boot/dts/imx6qdl.dtsi | 3 +++ arch/arm/boot/dts/imx6sl.dtsi | 2 ++ arch/arm/boot/dts/vf610-twr.dts | 2 ++ arch/arm/boot/dts/vf610.dtsi | 2 ++ 10 files changed, 24 insertions(+) diff --git a/arch/arm/boot/dts/imx25.dtsi b/arch/arm/boot/dts/imx25.dtsi index 32f760e24898..ea323f09dc78 100644 --- a/arch/arm/boot/dts/imx25.dtsi +++ b/arch/arm/boot/dts/imx25.dtsi @@ -56,6 +56,7 @@ osc { compatible = "fsl,imx-osc", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/imx27-apf27.dts b/arch/arm/boot/dts/imx27-apf27.dts index 09f57b39e3ef..73aae4f5e539 100644 --- a/arch/arm/boot/dts/imx27-apf27.dts +++ b/arch/arm/boot/dts/imx27-apf27.dts @@ -29,6 +29,7 @@ osc26m { compatible = "fsl,imx-osc26m", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; }; diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi index 6279e0b4f768..137e010eab35 100644 --- a/arch/arm/boot/dts/imx27.dtsi +++ b/arch/arm/boot/dts/imx27.dtsi @@ -48,6 +48,7 @@ osc26m { compatible = "fsl,imx-osc26m", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <26000000>; }; }; diff --git a/arch/arm/boot/dts/imx50.dtsi b/arch/arm/boot/dts/imx50.dtsi index 0c75fe3deb35..9c89d1ca97c2 100644 --- a/arch/arm/boot/dts/imx50.dtsi +++ b/arch/arm/boot/dts/imx50.dtsi @@ -53,21 +53,25 @@ ckil { compatible = "fsl,imx-ckil", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; ckih1 { compatible = "fsl,imx-ckih1", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <22579200>; }; ckih2 { compatible = "fsl,imx-ckih2", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; osc { compatible = "fsl,imx-osc", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi index 5f8216d08f6b..150bb4e2f744 100644 --- a/arch/arm/boot/dts/imx51.dtsi +++ b/arch/arm/boot/dts/imx51.dtsi @@ -50,21 +50,25 @@ ckil { compatible = "fsl,imx-ckil", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; ckih1 { compatible = "fsl,imx-ckih1", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; ckih2 { compatible = "fsl,imx-ckih2", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; osc { compatible = "fsl,imx-osc", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/imx53.dtsi b/arch/arm/boot/dts/imx53.dtsi index a99b64bfb046..9c2bff2252d0 100644 --- a/arch/arm/boot/dts/imx53.dtsi +++ b/arch/arm/boot/dts/imx53.dtsi @@ -70,21 +70,25 @@ ckil { compatible = "fsl,imx-ckil", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; ckih1 { compatible = "fsl,imx-ckih1", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <22579200>; }; ckih2 { compatible = "fsl,imx-ckih2", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; osc { compatible = "fsl,imx-osc", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index 2d04a5185fe9..eca0971d4db1 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -59,16 +59,19 @@ ckil { compatible = "fsl,imx-ckil", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; ckih1 { compatible = "fsl,imx-ckih1", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <0>; }; osc { compatible = "fsl,imx-osc", "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi index d92df0ab02e4..d26b099260a3 100644 --- a/arch/arm/boot/dts/imx6sl.dtsi +++ b/arch/arm/boot/dts/imx6sl.dtsi @@ -79,11 +79,13 @@ ckil { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; osc { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts index 7dd1d6ede525..ded361075aab 100644 --- a/arch/arm/boot/dts/vf610-twr.dts +++ b/arch/arm/boot/dts/vf610-twr.dts @@ -25,11 +25,13 @@ clocks { audio_ext { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24576000>; }; enet_ext { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <50000000>; }; }; diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi index bb78e901ed5d..b8ce0aa7b157 100644 --- a/arch/arm/boot/dts/vf610.dtsi +++ b/arch/arm/boot/dts/vf610.dtsi @@ -45,11 +45,13 @@ sxosc { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <32768>; }; fxosc { compatible = "fixed-clock"; + #clock-cells = <0>; clock-frequency = <24000000>; }; }; From 9f85ff849c21b429c1e2137f2646f9cc667d8ded Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Sun, 13 Apr 2014 17:59:34 -0700 Subject: [PATCH 077/623] ARM: shmobile: lager: fixup SND_SOC_DAIFMT_CBx_CFx flags e1508289404ab6ca28e0dc931612600f0441c417 (ASoC: rcar: fixup SND_SOC_DAIFMT_CBx_CFx flags) corrected SND_SOC_DAIFMT_CBx_CFx definition. But then, Lager board was maintenanced other branch. This patch correct SND_SOC_DAIFMT_CBx_CFx flag for lager Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-lager.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c index f0104bfe544e..18c7e0311aa6 100644 --- a/arch/arm/mach-shmobile/board-lager.c +++ b/arch/arm/mach-shmobile/board-lager.c @@ -588,14 +588,12 @@ static struct asoc_simple_card_info rsnd_card_info = { .card = "SSI01-AK4643", .codec = "ak4642-codec.2-0012", .platform = "rcar_sound", - .daifmt = SND_SOC_DAIFMT_LEFT_J, + .daifmt = SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_CBM_CFM, .cpu_dai = { .name = "rcar_sound", - .fmt = SND_SOC_DAIFMT_CBS_CFS, }, .codec_dai = { .name = "ak4642-hifi", - .fmt = SND_SOC_DAIFMT_CBM_CFM, .sysclk = 11289600, }, }; From 7b707277e734c553a8043e9b4d530eb47f4d60c8 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Sun, 13 Apr 2014 17:59:47 -0700 Subject: [PATCH 078/623] ARM: shmobile: armadillo800eva: fixup SND_SOC_DAIFMT_CBx_CFx flags c7a507eea1db1430476289f525f9c853d5d485e8 (ASoC: fsi: fixup SND_SOC_DAIFMT_CBx_CFx flags) exchanged sound flags, but armadillo800eva flags needs IB_NF. The recorded sound will be noise without this patch. Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-armadillo800eva.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index 2858f380beae..486063db2a2f 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c @@ -992,6 +992,7 @@ static struct asoc_simple_card_info fsi_wm8978_info = { .platform = "sh_fsi2", .daifmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM, .cpu_dai = { + .fmt = SND_SOC_DAIFMT_IB_NF, .name = "fsia-dai", }, .codec_dai = { From 5fc68a6cad658e45dca3e0a6607df3a8e5df4ef9 Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Wed, 19 Mar 2014 11:25:50 +0530 Subject: [PATCH 079/623] dma: edma: fix incorrect SG list handling The code to handle any length SG lists calls edma_resume() even before edma_start() is called. This is incorrect because edma_resume() enables edma events on the channel after which CPU (in edma_start) cannot clear posted events by writing to ECR (per the EDMA user's guide). Because of this EDMA transfers fail to start if due to some reason there is a pending EDMA event registered even before EDMA transfers are started. This can happen if an EDMA event is a byproduct of device initialization. Fix this by calling edma_resume() only if it is not the first batch of MAX_NR_SG elements. Without this patch, MMC/SD fails to function on DA850 EVM with DMA. The behaviour is triggered by specific IP and this can explain why the issue was not reported before (example with MMC/SD on AM335x). Tested on DA850 EVM and AM335x EVM-SK using MMC/SD card. Cc: stable@vger.kernel.org # v3.12.x+ Cc: Joel Fernandes Acked-by: Joel Fernandes Tested-by: Jon Ringle Tested-by: Alexander Holler Reported-by: Jon Ringle Signed-off-by: Sekhar Nori Signed-off-by: Vinod Koul --- drivers/dma/edma.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index cd04eb7b182e..926360c2db6a 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -182,11 +182,13 @@ static void edma_execute(struct edma_chan *echan) echan->ecc->dummy_slot); } - edma_resume(echan->ch_num); - if (edesc->processed <= MAX_NR_SG) { dev_dbg(dev, "first transfer starting %d\n", echan->ch_num); edma_start(echan->ch_num); + } else { + dev_dbg(dev, "chan: %d: completed %d elements, resuming\n", + echan->ch_num, edesc->processed); + edma_resume(echan->ch_num); } /* From b34f8624a7ddaca51a00d5bb35f55324e851b314 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 10 Apr 2014 16:21:02 +0200 Subject: [PATCH 080/623] ARM: ux500: update defconfig Update the ux500 defconfig to match the latest output of savedefconfig. Signed-off-by: Linus Walleij --- arch/arm/configs/u8500_defconfig | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index 65f77885c167..d130a01d9342 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -1,6 +1,6 @@ # CONFIG_SWAP is not set CONFIG_SYSVIPC=y -CONFIG_NO_HZ=y +CONFIG_NO_HZ_IDLE=y CONFIG_HIGH_RES_TIMERS=y CONFIG_BLK_DEV_INITRD=y CONFIG_KALLSYMS_ALL=y @@ -10,7 +10,6 @@ CONFIG_MODULE_UNLOAD=y CONFIG_ARCH_U8500=y CONFIG_MACH_HREFV60=y CONFIG_MACH_SNOWBALL=y -CONFIG_MACH_UX500_DT=y CONFIG_SMP=y CONFIG_NR_CPUS=2 CONFIG_PREEMPT=y @@ -85,8 +84,6 @@ CONFIG_AB8500_USB=y CONFIG_USB_GADGET=y CONFIG_USB_ETH=m CONFIG_MMC=y -CONFIG_MMC_UNSAFE_RESUME=y -# CONFIG_MMC_BLOCK_BOUNCE is not set CONFIG_MMC_ARMMMCI=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y From ccc3e2a463e25ccbbd6cc4dcfff23b8c81c669dc Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Wed, 26 Mar 2014 14:19:07 +0100 Subject: [PATCH 081/623] ARM: ux500: u8500_defconfig: Enable PARTITION_ADVANCED There are both (e)MMC/SD-card support in ux500, thus it's reasonable to support partitions for block devices as default. While updating the defconfig, we rebase it towards Kconfig changes. Signed-off-by: Ulf Hansson Signed-off-by: Linus Walleij --- arch/arm/configs/u8500_defconfig | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index d130a01d9342..dac0a876e737 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -7,6 +7,7 @@ CONFIG_KALLSYMS_ALL=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set +CONFIG_PARTITION_ADVANCED=y CONFIG_ARCH_U8500=y CONFIG_MACH_HREFV60=y CONFIG_MACH_SNOWBALL=y @@ -36,6 +37,8 @@ CONFIG_PHONET=y # CONFIG_WIRELESS is not set CONFIG_CAIF=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_DEVTMPFS=y +CONFIG_DEVTMPFS_MOUNT=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 CONFIG_SENSORS_BH1780=y @@ -107,8 +110,6 @@ CONFIG_EXT2_FS_SECURITY=y CONFIG_EXT3_FS=y CONFIG_EXT4_FS=y CONFIG_VFAT_FS=y -CONFIG_DEVTMPFS=y -CONFIG_DEVTMPFS_MOUNT=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y # CONFIG_MISC_FILESYSTEMS is not set From f661e7733f8c45692147ea52a16c9c1856cf152b Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Wed, 26 Mar 2014 14:30:53 +0100 Subject: [PATCH 082/623] ARM: u300: u300_defconfig: Enable PARTITION_ADVANCED Since there are SD-card support in u300, it's reasonable to support partitions for block devices as default. While updating the defconfig, we rebase it towards Kconfig changes. Signed-off-by: Ulf Hansson Signed-off-by: Linus Walleij --- arch/arm/configs/u300_defconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/configs/u300_defconfig b/arch/arm/configs/u300_defconfig index fd81a1b99cce..aaa95ab606a8 100644 --- a/arch/arm/configs/u300_defconfig +++ b/arch/arm/configs/u300_defconfig @@ -11,6 +11,7 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_LBDAF is not set # CONFIG_BLK_DEV_BSG is not set +CONFIG_PARTITION_ADVANCED=y # CONFIG_IOSCHED_CFQ is not set # CONFIG_ARCH_MULTI_V7 is not set CONFIG_ARCH_U300=y @@ -21,7 +22,6 @@ CONFIG_ZBOOT_ROM_TEXT=0x0 CONFIG_ZBOOT_ROM_BSS=0x0 CONFIG_CMDLINE="root=/dev/ram0 rw rootfstype=rootfs console=ttyAMA0,115200n8 lpj=515072" CONFIG_CPU_IDLE=y -CONFIG_FPE_NWFPE=y # CONFIG_SUSPEND is not set CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" # CONFIG_PREVENT_FIRMWARE_BUILD is not set @@ -64,8 +64,8 @@ CONFIG_TMPFS=y CONFIG_NLS_CODEPAGE_437=y CONFIG_NLS_ISO8859_1=y CONFIG_PRINTK_TIME=y +CONFIG_DEBUG_INFO=y CONFIG_DEBUG_FS=y # CONFIG_SCHED_DEBUG is not set CONFIG_TIMER_STATS=y # CONFIG_DEBUG_PREEMPT is not set -CONFIG_DEBUG_INFO=y From 7c60a6ed10e7d7146fbae52a7f5d59c05169ce4d Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 10 Apr 2014 16:31:53 +0200 Subject: [PATCH 083/623] ARM: ux500: configure in sensors This enables the STMicroelectronics MEMS sensors for accelerometer, gyroscope, magnetometer and pressure that are mounted on the Ux500 models. Signed-off-by: Linus Walleij --- arch/arm/configs/u8500_defconfig | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index dac0a876e737..726b1fa786f7 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -103,6 +103,11 @@ CONFIG_STE_DMA40=y CONFIG_STAGING=y CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4=y CONFIG_HSEM_U8500=y +CONFIG_IIO=y +CONFIG_IIO_ST_ACCEL_3AXIS=y +CONFIG_IIO_ST_GYRO_3AXIS=y +CONFIG_IIO_ST_MAGN_3AXIS=y +CONFIG_IIO_ST_PRESS=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y From 7633fb959b711a8d91548911eb087fb931c7b8e4 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 9 Apr 2014 13:20:38 +0200 Subject: [PATCH 084/623] gpio: set data first, then chip and handler During irq mapping, in irq_set_chip_and_handler() the process of setting this up may incur calls to lock the irqchip, which in turn may need to dereference and use the chip data. So set the data first, then set the chip and handler. Signed-off-by: Linus Walleij --- drivers/gpio/gpiolib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 761013f8b82f..f48817d97480 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1387,8 +1387,8 @@ static int gpiochip_irq_map(struct irq_domain *d, unsigned int irq, { struct gpio_chip *chip = d->host_data; - irq_set_chip_and_handler(irq, chip->irqchip, chip->irq_handler); irq_set_chip_data(irq, chip); + irq_set_chip_and_handler(irq, chip->irqchip, chip->irq_handler); #ifdef CONFIG_ARM set_irq_flags(irq, IRQF_VALID); #else From e9595f84a6273dffc5b75564d9b12a77630c529e Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Mon, 31 Mar 2014 15:16:49 +0300 Subject: [PATCH 085/623] gpio / ACPI: Don't crash on NULL chip->dev Commit aa92b6f689ac (gpio / ACPI: Allocate ACPI specific data directly in acpi_gpiochip_add()) moved ACPI handle checking to acpi_gpiochip_add() but forgot to check whether chip->dev is NULL before dereferencing it. Since chip->dev pointer is optional we can end up with crash like following: BUG: unable to handle kernel NULL pointer dereference at 00000138 IP: [] acpi_gpiochip_add+0x13/0x190 *pde = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ssb(+) ... CPU: 0 PID: 512 Comm: modprobe Tainted: G W 3.14.0-rc7-next-20140324-t1 #24 Hardware name: Dell Inc. Latitude D830 /0UY141, BIOS A02 06/07/2007 task: f5799900 ti: f543e000 task.ti: f543e000 EIP: 0060:[] EFLAGS: 00010282 CPU: 0 EIP is at acpi_gpiochip_add+0x13/0x190 EAX: 00000000 EBX: f57824c4 ECX: 00000000 EDX: 00000000 ESI: f57824c4 EDI: 00000010 EBP: f543fc54 ESP: f543fc40 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 8005003b CR2: 00000138 CR3: 355f8000 CR4: 000007d0 Stack: f543fc5c fd1f7790 f57824c4 000000be 00000010 f543fc84 c1269f4e f543fc74 fd1f78bd 00008002 f57822b0 f5782090 fd1f8400 00000286 fd1f9994 00000000 f5782000 f543fc8c fd1f7e39 f543fcc8 fd1f0bd8 000000c0 00000000 00000000 Call Trace: [] ? ssb_pcie_mdio_write+0xa0/0xd0 [ssb] [] gpiochip_add+0xee/0x300 [] ? ssb_pcicore_serdes_workaround+0xfd/0x140 [ssb] [] ssb_gpio_init+0x89/0xa0 [ssb] [] ssb_attach_queued_buses+0xc8/0x2d0 [ssb] [] ssb_bus_register+0x185/0x1f0 [ssb] [] ? ssb_pci_xtal+0x220/0x220 [ssb] [] ssb_bus_pcibus_register+0x2c/0x80 [ssb] [] ssb_pcihost_probe+0x9c/0x110 [ssb] [] pci_device_probe+0x6f/0xc0 [] ? sysfs_create_link+0x25/0x40 [] driver_probe_device+0x79/0x360 [] ? pci_match_device+0xb2/0xc0 [] __driver_attach+0x71/0x80 [] ? __device_attach+0x40/0x40 [] bus_for_each_dev+0x47/0x80 [] driver_attach+0x1e/0x20 [] ? __device_attach+0x40/0x40 [] bus_add_driver+0x157/0x230 [] driver_register+0x59/0xe0 ... Fix this by checking chip->dev pointer against NULL first. Also we can now remove redundant check in acpi_gpiochip_request/free_interrupts(). Reported-by: Sabrina Dubroca Signed-off-by: Mika Westerberg Tested-by: Sabrina Dubroca Acked-by: Alexandre Courbot Tested-by: Josh Boyer Signed-off-by: Linus Walleij --- drivers/gpio/gpiolib-acpi.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index bf0f8b476696..d5be56fe689e 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -233,7 +233,7 @@ static void acpi_gpiochip_request_interrupts(struct acpi_gpio_chip *acpi_gpio) { struct gpio_chip *chip = acpi_gpio->chip; - if (!chip->dev || !chip->to_irq) + if (!chip->to_irq) return; INIT_LIST_HEAD(&acpi_gpio->events); @@ -253,7 +253,7 @@ static void acpi_gpiochip_free_interrupts(struct acpi_gpio_chip *acpi_gpio) struct acpi_gpio_event *event, *ep; struct gpio_chip *chip = acpi_gpio->chip; - if (!chip->dev || !chip->to_irq) + if (!chip->to_irq) return; list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) { @@ -501,6 +501,9 @@ void acpi_gpiochip_add(struct gpio_chip *chip) acpi_handle handle; acpi_status status; + if (!chip || !chip->dev) + return; + handle = ACPI_HANDLE(chip->dev); if (!handle) return; @@ -531,6 +534,9 @@ void acpi_gpiochip_remove(struct gpio_chip *chip) acpi_handle handle; acpi_status status; + if (!chip || !chip->dev) + return; + handle = ACPI_HANDLE(chip->dev); if (!handle) return; From b5539fa2d59d697b7b8e28b4d08da844ff60f7cf Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 1 Apr 2014 13:03:00 +0300 Subject: [PATCH 086/623] gpio / ACPI: Prevent potential wrap of GPIO value on OpRegion read Dan Carpenter's static code checker reports: The patch 473ed7be0da0: "gpio / ACPI: Add support for ACPI GPIO operation regions" from Mar 14, 2014, leads to the following static checker warning: drivers/gpio/gpiolib-acpi.c:454 acpi_gpio_adr_space_handler() warn: should 'gpiod_get_raw_value(desc) << i' be a 64 bit type? This is due the fact that *value is of type u64 and gpiod_get_raw_value() returns int. Since i can be larger than 31, it is possible that the value returned gets wrapped. Fix this by casting the return of gpiod_get_raw_value() to u64 first before shift. Reported-by: Dan Carpenter Signed-off-by: Mika Westerberg Signed-off-by: Linus Walleij --- drivers/gpio/gpiolib-acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index d5be56fe689e..401add28933f 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -451,7 +451,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address, if (function == ACPI_WRITE) gpiod_set_raw_value(desc, !!((1 << i) & *value)); else - *value |= gpiod_get_raw_value(desc) << i; + *value |= (u64)gpiod_get_raw_value(desc) << i; } out: From 1fb4e407b520a2344b92a680c75672c7900aedf8 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 14 Apr 2014 11:08:26 +0200 Subject: [PATCH 087/623] ARM: ux500: configure for CW1200 WLAN chip The CW1200 WLAN chip driver had been in the kernel for a while, we only need to activate it for the Ux500 properly. The latter require some elaborative work, but in the meantime, let's make sure we atleast compile it in. Signed-off-by: Linus Walleij --- arch/arm/configs/u8500_defconfig | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index 726b1fa786f7..d219d6a43238 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -34,7 +34,10 @@ CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y CONFIG_NETFILTER=y CONFIG_PHONET=y -# CONFIG_WIRELESS is not set +CONFIG_CFG80211=y +CONFIG_CFG80211_DEBUGFS=y +CONFIG_MAC80211=y +CONFIG_MAC80211_LEDS=y CONFIG_CAIF=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_DEVTMPFS=y @@ -45,7 +48,8 @@ CONFIG_SENSORS_BH1780=y CONFIG_NETDEVICES=y CONFIG_SMSC911X=y CONFIG_SMSC_PHY=y -# CONFIG_WLAN is not set +CONFIG_CW1200=y +CONFIG_CW1200_WLAN_SDIO=y # CONFIG_INPUT_MOUSEDEV_PSAUX is not set CONFIG_INPUT_EVDEV=y # CONFIG_KEYBOARD_ATKBD is not set @@ -93,7 +97,6 @@ CONFIG_LEDS_CLASS=y CONFIG_LEDS_LM3530=y CONFIG_LEDS_GPIO=y CONFIG_LEDS_LP5521=y -CONFIG_LEDS_TRIGGERS=y CONFIG_LEDS_TRIGGER_HEARTBEAT=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AB8500=y From 151eea367c720db8a0768caf47894c32991aa02a Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 14 Apr 2014 18:01:47 +0200 Subject: [PATCH 088/623] pata_arasan_cf: fix ata_host_activate() failure handling Add missing cf_exit() and clk_put() calls to ata_host_activate() failure path. Cc: Viresh Kumar Cc: Shiraz Hashim Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Viresh Kumar Signed-off-by: Tejun Heo --- drivers/ata/pata_arasan_cf.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c index 6fac524c2f50..4edb1a81f63f 100644 --- a/drivers/ata/pata_arasan_cf.c +++ b/drivers/ata/pata_arasan_cf.c @@ -898,9 +898,12 @@ static int arasan_cf_probe(struct platform_device *pdev) cf_card_detect(acdev, 0); - return ata_host_activate(host, acdev->irq, irq_handler, 0, - &arasan_cf_sht); + ret = ata_host_activate(host, acdev->irq, irq_handler, 0, + &arasan_cf_sht); + if (!ret) + return 0; + cf_exit(acdev); free_clk: clk_put(acdev->clk); return ret; From 0040e606e35a0db80fc3fac04ccc7c7176a8e2b1 Mon Sep 17 00:00:00 2001 From: Christoph Jaeger Date: Sat, 12 Apr 2014 13:33:13 +0200 Subject: [PATCH 089/623] btrfs: fix use-after-free in mount_subvol() Pointer 'newargs' is used after the memory that it points to has already been freed. Picked up by Coverity - CID 1201425. Fixes: 0723a0473f ("btrfs: allow mounting btrfs subvolumes with different ro/rw options") Signed-off-by: Christoph Jaeger Signed-off-by: Chris Mason --- fs/btrfs/super.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 994c40955315..53bc3733d483 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1186,7 +1186,6 @@ static struct dentry *mount_subvol(const char *subvol_name, int flags, return ERR_PTR(-ENOMEM); mnt = vfs_kern_mount(&btrfs_fs_type, flags, device_name, newargs); - kfree(newargs); if (PTR_RET(mnt) == -EBUSY) { if (flags & MS_RDONLY) { @@ -1196,17 +1195,22 @@ static struct dentry *mount_subvol(const char *subvol_name, int flags, int r; mnt = vfs_kern_mount(&btrfs_fs_type, flags | MS_RDONLY, device_name, newargs); - if (IS_ERR(mnt)) + if (IS_ERR(mnt)) { + kfree(newargs); return ERR_CAST(mnt); + } r = btrfs_remount(mnt->mnt_sb, &flags, NULL); if (r < 0) { /* FIXME: release vfsmount mnt ??*/ + kfree(newargs); return ERR_PTR(r); } } } + kfree(newargs); + if (IS_ERR(mnt)) return ERR_CAST(mnt); From e8304d04ac88c21b2a68d189f01678d71479a803 Mon Sep 17 00:00:00 2001 From: Steven Miao Date: Sat, 12 Apr 2014 09:23:24 +0800 Subject: [PATCH 090/623] spi: bfin5xx: fix build error should include linux/gpio.h Signed-off-by: Steven Miao Signed-off-by: Mark Brown --- drivers/spi/spi-bfin5xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 55e57c3eb9bd..ebf720b88a2a 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include From 818e91625aa17161cd6b39a4d08b77c984f0f485 Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Mon, 14 Apr 2014 14:29:57 +0800 Subject: [PATCH 091/623] spi: sirf: correct TXFIFO empty interrupt status bit the old code uses wrong marco - SIRFSOC_SPI_FIFO_FULL is not for FIFO interrupt status, it is for FIFO status. here in the ISR, SIRFSOC_SPI_TXFIFO_EMPTY is the right bit for SPI TXFIFO interrupt status. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Mark Brown --- drivers/spi/spi-sirf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 1a77ad52812f..51d7c988d3ae 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -287,8 +287,8 @@ static irqreturn_t spi_sirfsoc_irq(int irq, void *dev_id) sspi->left_rx_word) sspi->rx_word(sspi); - if (spi_stat & (SIRFSOC_SPI_FIFO_EMPTY - | SIRFSOC_SPI_TXFIFO_THD_REACH)) + if (spi_stat & (SIRFSOC_SPI_TXFIFO_EMPTY | + SIRFSOC_SPI_TXFIFO_THD_REACH)) while (!((readl(sspi->base + SIRFSOC_SPI_TXFIFO_STATUS) & SIRFSOC_SPI_FIFO_FULL)) && sspi->left_tx_word) From 625227a4e916fa87f1dd84bde518ef403c3f708a Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Mon, 14 Apr 2014 14:29:58 +0800 Subject: [PATCH 092/623] spi: sirf: set SPI controller in RISC IO chipselect mode SPI bitbang supply "chipselect" interface for change chip-select line , in the SiRFSoC SPI controller, we need to enable "SPI_CS_IO_MODE", otherwise, spi_sirfsoc_chipselect() has no effect. now the driver is working is because SPI controller will control CS automatically without SPI_CS_IO_MODE. this patch makes the CS controller really controlled by software. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Mark Brown --- drivers/spi/spi-sirf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 51d7c988d3ae..9b30743d816a 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -559,6 +559,11 @@ spi_sirfsoc_setup_transfer(struct spi_device *spi, struct spi_transfer *t) regval &= ~SIRFSOC_SPI_CMD_MODE; sspi->tx_by_cmd = false; } + /* + * set spi controller in RISC chipselect mode, we are controlling CS by + * software BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE. + */ + regval |= SIRFSOC_SPI_CS_IO_MODE; writel(regval, sspi->base + SIRFSOC_SPI_CTRL); if (IS_DMA_VALID(t)) { From 6ee8a2f7d5e78700b6e64799b5e9976b21cfad79 Mon Sep 17 00:00:00 2001 From: Qipan Li Date: Mon, 14 Apr 2014 14:29:59 +0800 Subject: [PATCH 093/623] spi: sirf: make GPIO chipselect function work well orignal GPIO chipslect is not standard because it don't take care to the chipselect signal: BITBANG_CS_ACTIVE and BITBANG_CS_INACTIVE. Signed-off-by: Qipan Li Signed-off-by: Barry Song Signed-off-by: Mark Brown --- drivers/spi/spi-sirf.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-sirf.c b/drivers/spi/spi-sirf.c index 9b30743d816a..67d8909dcf39 100644 --- a/drivers/spi/spi-sirf.c +++ b/drivers/spi/spi-sirf.c @@ -470,7 +470,16 @@ static void spi_sirfsoc_chipselect(struct spi_device *spi, int value) writel(regval, sspi->base + SIRFSOC_SPI_CTRL); } else { int gpio = sspi->chipselect[spi->chip_select]; - gpio_direction_output(gpio, spi->mode & SPI_CS_HIGH ? 0 : 1); + switch (value) { + case BITBANG_CS_ACTIVE: + gpio_direction_output(gpio, + spi->mode & SPI_CS_HIGH ? 1 : 0); + break; + case BITBANG_CS_INACTIVE: + gpio_direction_output(gpio, + spi->mode & SPI_CS_HIGH ? 0 : 1); + break; + } } } From 3dedc5f5b11c567dbe2f31adb5119d1dfb8f51c9 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Mon, 14 Apr 2014 10:41:36 +0900 Subject: [PATCH 094/623] ARM: shmobile: r8a7778: Use clks as MSTP007 parent According to the documentation the parent clock of MSTP007 should be clks not clkp. Signed-off-by: Simon Horman Acked-by: Laurent Pinchart Signed-off-by: Mark Brown --- arch/arm/mach-shmobile/clock-r8a7778.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/clock-r8a7778.c b/arch/arm/mach-shmobile/clock-r8a7778.c index 2009a9bc6356..9989b1b06ffd 100644 --- a/arch/arm/mach-shmobile/clock-r8a7778.c +++ b/arch/arm/mach-shmobile/clock-r8a7778.c @@ -170,7 +170,7 @@ static struct clk mstp_clks[MSTP_NR] = { [MSTP010] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 10, 0), /* SSI2 */ [MSTP009] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 9, 0), /* SSI3 */ [MSTP008] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 8, 0), /* SRU */ - [MSTP007] = SH_CLK_MSTP32(&p_clk, MSTPCR0, 7, 0), /* HSPI */ + [MSTP007] = SH_CLK_MSTP32(&s_clk, MSTPCR0, 7, 0), /* HSPI */ }; static struct clk_lookup lookups[] = { From 4a4dd7d80e11f62cacf49bd90d9448a218188af7 Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Mon, 14 Apr 2014 10:41:38 +0900 Subject: [PATCH 095/623] spi: sh-hspi: Do not specifically request shyway_clk clock Rather than requesting the shyway_clk call clk_get with the device and a NULL con_id. This is in keeping with the way that clk_get() is called on other drivers used by Renesas Gen 1 SoCs. And I believe it is compatible with supplying clocks via DT, unlike the current code. It appears to me that the two uses of this driver are the r8a7778 and r8a7779 SoCs. The r8a7779 already has clocks setup to allow this driver to continue to work with this change applied. The r8a7778 has clocks incorrectly setup to allow this driver to continue to work with this change applied. This problem is addressed in "ARM: shmobile: r8a7778: Use clks as MSTP007 parent" which is thus a pre-requisite of this patch. Signed-off-by: Simon Horman Signed-off-by: Mark Brown --- drivers/spi/spi-sh-hspi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c index 9009456bdf4d..c8e795ef2e13 100644 --- a/drivers/spi/spi-sh-hspi.c +++ b/drivers/spi/spi-sh-hspi.c @@ -244,9 +244,9 @@ static int hspi_probe(struct platform_device *pdev) return -ENOMEM; } - clk = clk_get(NULL, "shyway_clk"); + clk = clk_get(&pdev->dev, NULL); if (IS_ERR(clk)) { - dev_err(&pdev->dev, "shyway_clk is required\n"); + dev_err(&pdev->dev, "couldn't get clock\n"); ret = -EINVAL; goto error0; } From 1cb7b43f6796ad0bc62669fa52d1005916911d27 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 8 Mar 2014 11:55:29 +0800 Subject: [PATCH 096/623] regulator: pbias: Fix is_enabled callback implementation The is_enabled implementation is wrong in some cases: e.g. for pbias_mmc_omap5: enable_mask is : BIT(27) | BIT(25) | BIT(26) However, pbias_regulator_enable() only sets BIT(27) | BIT(26) bits. So is_enabled callback will always return false in this case. Fix the logic to compare the register value with info->enable rather than info->enable_mask. Signed-off-by: Axel Lin Acked-by: Balaji T K Signed-off-by: Mark Brown --- drivers/regulator/pbias-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/pbias-regulator.c b/drivers/regulator/pbias-regulator.c index ded3b3574209..d89a1d8615c7 100644 --- a/drivers/regulator/pbias-regulator.c +++ b/drivers/regulator/pbias-regulator.c @@ -108,7 +108,7 @@ static int pbias_regulator_is_enable(struct regulator_dev *rdev) regmap_read(data->syscon, data->pbias_reg, &value); - return (value & info->enable_mask) == info->enable_mask; + return (value & info->enable_mask) == info->enable; } static struct regulator_ops pbias_regulator_voltage_ops = { From 60e8c1e34d3ab74556fb9b25f26fa34b9879ee30 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 8 Mar 2014 11:56:47 +0800 Subject: [PATCH 097/623] regulator: pbias: Convert to use regmap helper functions This patch converts this driver to use the regmap helper functions provided by regulator core. Signed-off-by: Axel Lin Acked-by: Balaji T K Signed-off-by: Mark Brown --- drivers/regulator/pbias-regulator.c | 74 ++++++++--------------------- 1 file changed, 19 insertions(+), 55 deletions(-) diff --git a/drivers/regulator/pbias-regulator.c b/drivers/regulator/pbias-regulator.c index d89a1d8615c7..6d38be3d970c 100644 --- a/drivers/regulator/pbias-regulator.c +++ b/drivers/regulator/pbias-regulator.c @@ -38,66 +38,24 @@ struct pbias_reg_info { struct pbias_regulator_data { struct regulator_desc desc; void __iomem *pbias_addr; - unsigned int pbias_reg; struct regulator_dev *dev; struct regmap *syscon; const struct pbias_reg_info *info; int voltage; }; -static int pbias_regulator_set_voltage(struct regulator_dev *dev, - int min_uV, int max_uV, unsigned *selector) -{ - struct pbias_regulator_data *data = rdev_get_drvdata(dev); - const struct pbias_reg_info *info = data->info; - int ret, vmode; - - if (min_uV <= 1800000) - vmode = 0; - else if (min_uV > 1800000) - vmode = info->vmode; - - ret = regmap_update_bits(data->syscon, data->pbias_reg, - info->vmode, vmode); - - return ret; -} - -static int pbias_regulator_get_voltage(struct regulator_dev *rdev) -{ - struct pbias_regulator_data *data = rdev_get_drvdata(rdev); - const struct pbias_reg_info *info = data->info; - int value, voltage; - - regmap_read(data->syscon, data->pbias_reg, &value); - value &= info->vmode; - - voltage = value ? 3000000 : 1800000; - - return voltage; -} +static const unsigned int pbias_volt_table[] = { + 1800000, + 3000000 +}; static int pbias_regulator_enable(struct regulator_dev *rdev) { struct pbias_regulator_data *data = rdev_get_drvdata(rdev); const struct pbias_reg_info *info = data->info; - int ret; - ret = regmap_update_bits(data->syscon, data->pbias_reg, - info->enable_mask, info->enable); - - return ret; -} - -static int pbias_regulator_disable(struct regulator_dev *rdev) -{ - struct pbias_regulator_data *data = rdev_get_drvdata(rdev); - const struct pbias_reg_info *info = data->info; - int ret; - - ret = regmap_update_bits(data->syscon, data->pbias_reg, - info->enable_mask, 0); - return ret; + return regmap_update_bits(data->syscon, rdev->desc->enable_reg, + info->enable_mask, info->enable); } static int pbias_regulator_is_enable(struct regulator_dev *rdev) @@ -106,17 +64,18 @@ static int pbias_regulator_is_enable(struct regulator_dev *rdev) const struct pbias_reg_info *info = data->info; int value; - regmap_read(data->syscon, data->pbias_reg, &value); + regmap_read(data->syscon, rdev->desc->enable_reg, &value); return (value & info->enable_mask) == info->enable; } static struct regulator_ops pbias_regulator_voltage_ops = { - .set_voltage = pbias_regulator_set_voltage, - .get_voltage = pbias_regulator_get_voltage, - .enable = pbias_regulator_enable, - .disable = pbias_regulator_disable, - .is_enabled = pbias_regulator_is_enable, + .list_voltage = regulator_list_voltage_table, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .enable = pbias_regulator_enable, + .disable = regulator_disable_regmap, + .is_enabled = pbias_regulator_is_enable, }; static const struct pbias_reg_info pbias_mmc_omap2430 = { @@ -192,6 +151,7 @@ static int pbias_regulator_probe(struct platform_device *pdev) if (IS_ERR(syscon)) return PTR_ERR(syscon); + cfg.regmap = syscon; cfg.dev = &pdev->dev; for (idx = 0; idx < PBIAS_NUM_REGS && data_idx < count; idx++) { @@ -207,15 +167,19 @@ static int pbias_regulator_probe(struct platform_device *pdev) if (!res) return -EINVAL; - drvdata[data_idx].pbias_reg = res->start; drvdata[data_idx].syscon = syscon; drvdata[data_idx].info = info; drvdata[data_idx].desc.name = info->name; drvdata[data_idx].desc.owner = THIS_MODULE; drvdata[data_idx].desc.type = REGULATOR_VOLTAGE; drvdata[data_idx].desc.ops = &pbias_regulator_voltage_ops; + drvdata[data_idx].desc.volt_table = pbias_volt_table; drvdata[data_idx].desc.n_voltages = 2; drvdata[data_idx].desc.enable_time = info->enable_time; + drvdata[data_idx].desc.vsel_reg = res->start; + drvdata[data_idx].desc.vsel_mask = info->vmode; + drvdata[data_idx].desc.enable_reg = res->start; + drvdata[data_idx].desc.enable_mask = info->enable_mask; cfg.init_data = pbias_matches[idx].init_data; cfg.driver_data = &drvdata[data_idx]; From c39e1ef77c76729f34cdcb09bbb3a5096d91a740 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 12 Apr 2014 06:07:23 +0100 Subject: [PATCH 098/623] ARM: 8024/1: Keep DEBUG_UART_{PHYS,VIRT} entries sorted This patch sorts the entries for DEBUG_UART_{PHYS,VIRT}. Signed-off-by: Alexander Shiyan Signed-off-by: Russell King --- arch/arm/Kconfig.debug | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 4a2fc0bf6fc9..eab8ecbe69c1 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1030,9 +1030,9 @@ config DEBUG_UART_PHYS default 0x40100000 if DEBUG_PXA_UART1 default 0x42000000 if ARCH_GEMINI default 0x7c0003f8 if FOOTBRIDGE - default 0x80230000 if DEBUG_PICOXCELL_UART default 0x80070000 if DEBUG_IMX23_UART default 0x80074000 if DEBUG_IMX28_UART + default 0x80230000 if DEBUG_PICOXCELL_UART default 0x808c0000 if ARCH_EP93XX default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX @@ -1096,22 +1096,22 @@ config DEBUG_UART_VIRT default 0xfeb26000 if DEBUG_RK3X_UART1 default 0xfeb30c00 if DEBUG_KEYSTONE_UART0 default 0xfeb31000 if DEBUG_KEYSTONE_UART1 - default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE - default 0xfed60000 if DEBUG_RK29_UART0 - default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 - default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 default 0xfec02000 if DEBUG_SOCFPGA_UART + default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0 default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1 default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 default 0xfed12000 if ARCH_KIRKWOOD + default 0xfed60000 if DEBUG_RK29_UART0 + default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 + default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 default 0xfedc0000 if ARCH_EP93XX default 0xfee003f8 if FOOTBRIDGE default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART - default 0xfef36000 if DEBUG_HIGHBANK_UART default 0xfee82340 if ARCH_IOP13XX default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN + default 0xfef36000 if DEBUG_HIGHBANK_UART default 0xfefff700 if ARCH_IOP33X default 0xff003000 if DEBUG_U300_UART default DEBUG_UART_PHYS if !MMU From 244b478386260a8a9150b501bc97644e2e07f8d3 Mon Sep 17 00:00:00 2001 From: Jay Foad Date: Mon, 14 Apr 2014 16:23:15 +0100 Subject: [PATCH 099/623] ARM: 8026/1: Fix emulation of multiply accumulate instructions The emulation for single and double precision multiply accumulate instructions correctly normalised any denormal values in the operand registers, but failed to normalise the destination (accumulator) register. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=70501 Signed-off-by: Jay Foad Signed-off-by: Russell King --- arch/arm/vfp/vfpdouble.c | 2 ++ arch/arm/vfp/vfpsingle.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/arm/vfp/vfpdouble.c b/arch/arm/vfp/vfpdouble.c index 6cac43bd1d86..423f56dd4028 100644 --- a/arch/arm/vfp/vfpdouble.c +++ b/arch/arm/vfp/vfpdouble.c @@ -866,6 +866,8 @@ vfp_double_multiply_accumulate(int dd, int dn, int dm, u32 fpscr, u32 negate, ch vdp.sign = vfp_sign_negate(vdp.sign); vfp_double_unpack(&vdn, vfp_get_double(dd)); + if (vdn.exponent == 0 && vdn.significand) + vfp_double_normalise_denormal(&vdn); if (negate & NEG_SUBTRACT) vdn.sign = vfp_sign_negate(vdn.sign); diff --git a/arch/arm/vfp/vfpsingle.c b/arch/arm/vfp/vfpsingle.c index b252631b406b..4f96c1617aae 100644 --- a/arch/arm/vfp/vfpsingle.c +++ b/arch/arm/vfp/vfpsingle.c @@ -915,6 +915,8 @@ vfp_single_multiply_accumulate(int sd, int sn, s32 m, u32 fpscr, u32 negate, cha v = vfp_get_float(sd); pr_debug("VFP: s%u = %08x\n", sd, v); vfp_single_unpack(&vsn, v); + if (vsn.exponent == 0 && vsn.significand) + vfp_single_normalise_denormal(&vsn); if (negate & NEG_SUBTRACT) vsn.sign = vfp_sign_negate(vsn.sign); From de66b584042b8f2cfe4c34ef4faa804dcd8d5843 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 14 Apr 2014 16:18:18 +0200 Subject: [PATCH 100/623] ARM: shmobile: sh73a0: drop address cells from GIC node This is likely a copy-and-paste error from the ARM GIC documentation, that has already been fixed. address-cells should have been set to 0, as with the size cells. As having those properties set to 0 is the same thing as not specifying them, drop them completely. Signed-off-by: Lucas Stach Acked-by: Rob Herring Signed-off-by: Simon Horman --- arch/arm/boot/dts/sh73a0.dtsi | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi index b7bd3b9a6753..5ecf552e1c00 100644 --- a/arch/arm/boot/dts/sh73a0.dtsi +++ b/arch/arm/boot/dts/sh73a0.dtsi @@ -34,7 +34,6 @@ gic: interrupt-controller@f0001000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; - #address-cells = <1>; interrupt-controller; reg = <0xf0001000 0x1000>, <0xf0000100 0x100>; From 64c04a79c377e23449c59060727fcd34cc798eb6 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 14 Apr 2014 16:18:17 +0200 Subject: [PATCH 101/623] ARM: shmobile: r8a7740: drop address cells from GIC node This is likely a copy-and-paste error from the ARM GIC documentation, that has already been fixed. address-cells should have been set to 0, as with the size cells. As having those properties set to 0 is the same thing as not specifying them, drop them completely. Signed-off-by: Lucas Stach Acked-by: Rob Herring Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7740.dtsi | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi index 8280884bfa59..2551e9438d35 100644 --- a/arch/arm/boot/dts/r8a7740.dtsi +++ b/arch/arm/boot/dts/r8a7740.dtsi @@ -28,7 +28,6 @@ gic: interrupt-controller@c2800000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; - #address-cells = <1>; interrupt-controller; reg = <0xc2800000 0x1000>, <0xc2000000 0x1000>; From d5dda0381f826326071b027f288372f682c24d55 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Mon, 14 Apr 2014 19:13:21 +0900 Subject: [PATCH 102/623] ARM: shmobile: koelsch: correct renesas,gpios to renesas,groups in sd[012] pfc Fix typo of renesas,groups in the koeslch dt. The kernel has no renesas,gpios but this should match renesas,groups. Noticed thanks to similar fix for Lager by Rob Taylor and Ben Dooks. Signed-off-by: Magnus Damm Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7791-koelsch.dts | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts index bdd73e6657b2..de1b6977c69a 100644 --- a/arch/arm/boot/dts/r8a7791-koelsch.dts +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts @@ -230,17 +230,17 @@ }; sdhi0_pins: sd0 { - renesas,gpios = "sdhi0_data4", "sdhi0_ctrl"; + renesas,groups = "sdhi0_data4", "sdhi0_ctrl"; renesas,function = "sdhi0"; }; sdhi1_pins: sd1 { - renesas,gpios = "sdhi1_data4", "sdhi1_ctrl"; + renesas,groups = "sdhi1_data4", "sdhi1_ctrl"; renesas,function = "sdhi1"; }; sdhi2_pins: sd2 { - renesas,gpios = "sdhi2_data4", "sdhi2_ctrl"; + renesas,groups = "sdhi2_data4", "sdhi2_ctrl"; renesas,function = "sdhi2"; }; From 17b9b3b9e88ac6564689283a08034faf2c048fdb Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 14 Apr 2014 16:20:39 +0200 Subject: [PATCH 103/623] ARM: imx6q: clk: Parent DI clocks to video PLL via di_pre_sel Route the video PLL to the display interface clocks via the di_pre_sel and di_sel muxes by default. Signed-off-by: Sascha Hauer Signed-off-by: Philipp Zabel Tested-by: Russell King Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 3ed67b592b48..4a6fb65589fa 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -445,6 +445,15 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk_set_parent(clk[ldb_di1_sel], clk[pll5_video_div]); } + clk_set_parent(clk[ipu1_di0_pre_sel], clk[pll5_video_div]); + clk_set_parent(clk[ipu1_di1_pre_sel], clk[pll5_video_div]); + clk_set_parent(clk[ipu2_di0_pre_sel], clk[pll5_video_div]); + clk_set_parent(clk[ipu2_di1_pre_sel], clk[pll5_video_div]); + clk_set_parent(clk[ipu1_di0_sel], clk[ipu1_di0_pre]); + clk_set_parent(clk[ipu1_di1_sel], clk[ipu1_di1_pre]); + clk_set_parent(clk[ipu2_di0_sel], clk[ipu2_di0_pre]); + clk_set_parent(clk[ipu2_di1_sel], clk[ipu2_di1_pre]); + /* * The gpmi needs 100MHz frequency in the EDO/Sync mode, * We can not get the 100MHz from the pll2_pfd0_352m. From 4591b13289b54fb5cbce84ee170f7390c576ef8f Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 14 Apr 2014 16:20:40 +0200 Subject: [PATCH 104/623] ARM: i.MX6: ipu_di_sel clocks can set parent rates To obtain exact pixel clocks, allow the DI clock selectors to influence the PLLs that they are derived from. Signed-off-by: Philipp Zabel Tested-by: Russell King Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 4a6fb65589fa..2b4d6acfa34a 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -258,14 +258,14 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[ipu2_sel] = imx_clk_mux("ipu2_sel", base + 0x3c, 14, 2, ipu_sels, ARRAY_SIZE(ipu_sels)); clk[ldb_di0_sel] = imx_clk_mux_flags("ldb_di0_sel", base + 0x2c, 9, 3, ldb_di_sels, ARRAY_SIZE(ldb_di_sels), CLK_SET_RATE_PARENT); clk[ldb_di1_sel] = imx_clk_mux_flags("ldb_di1_sel", base + 0x2c, 12, 3, ldb_di_sels, ARRAY_SIZE(ldb_di_sels), CLK_SET_RATE_PARENT); - clk[ipu1_di0_pre_sel] = imx_clk_mux("ipu1_di0_pre_sel", base + 0x34, 6, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels)); - clk[ipu1_di1_pre_sel] = imx_clk_mux("ipu1_di1_pre_sel", base + 0x34, 15, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels)); - clk[ipu2_di0_pre_sel] = imx_clk_mux("ipu2_di0_pre_sel", base + 0x38, 6, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels)); - clk[ipu2_di1_pre_sel] = imx_clk_mux("ipu2_di1_pre_sel", base + 0x38, 15, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels)); - clk[ipu1_di0_sel] = imx_clk_mux("ipu1_di0_sel", base + 0x34, 0, 3, ipu1_di0_sels, ARRAY_SIZE(ipu1_di0_sels)); - clk[ipu1_di1_sel] = imx_clk_mux("ipu1_di1_sel", base + 0x34, 9, 3, ipu1_di1_sels, ARRAY_SIZE(ipu1_di1_sels)); - clk[ipu2_di0_sel] = imx_clk_mux("ipu2_di0_sel", base + 0x38, 0, 3, ipu2_di0_sels, ARRAY_SIZE(ipu2_di0_sels)); - clk[ipu2_di1_sel] = imx_clk_mux("ipu2_di1_sel", base + 0x38, 9, 3, ipu2_di1_sels, ARRAY_SIZE(ipu2_di1_sels)); + clk[ipu1_di0_pre_sel] = imx_clk_mux_flags("ipu1_di0_pre_sel", base + 0x34, 6, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels), CLK_SET_RATE_PARENT); + clk[ipu1_di1_pre_sel] = imx_clk_mux_flags("ipu1_di1_pre_sel", base + 0x34, 15, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels), CLK_SET_RATE_PARENT); + clk[ipu2_di0_pre_sel] = imx_clk_mux_flags("ipu2_di0_pre_sel", base + 0x38, 6, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels), CLK_SET_RATE_PARENT); + clk[ipu2_di1_pre_sel] = imx_clk_mux_flags("ipu2_di1_pre_sel", base + 0x38, 15, 3, ipu_di_pre_sels, ARRAY_SIZE(ipu_di_pre_sels), CLK_SET_RATE_PARENT); + clk[ipu1_di0_sel] = imx_clk_mux_flags("ipu1_di0_sel", base + 0x34, 0, 3, ipu1_di0_sels, ARRAY_SIZE(ipu1_di0_sels), CLK_SET_RATE_PARENT); + clk[ipu1_di1_sel] = imx_clk_mux_flags("ipu1_di1_sel", base + 0x34, 9, 3, ipu1_di1_sels, ARRAY_SIZE(ipu1_di1_sels), CLK_SET_RATE_PARENT); + clk[ipu2_di0_sel] = imx_clk_mux_flags("ipu2_di0_sel", base + 0x38, 0, 3, ipu2_di0_sels, ARRAY_SIZE(ipu2_di0_sels), CLK_SET_RATE_PARENT); + clk[ipu2_di1_sel] = imx_clk_mux_flags("ipu2_di1_sel", base + 0x38, 9, 3, ipu2_di1_sels, ARRAY_SIZE(ipu2_di1_sels), CLK_SET_RATE_PARENT); clk[hsi_tx_sel] = imx_clk_mux("hsi_tx_sel", base + 0x30, 28, 1, hsi_tx_sels, ARRAY_SIZE(hsi_tx_sels)); clk[pcie_axi_sel] = imx_clk_mux("pcie_axi_sel", base + 0x18, 10, 1, pcie_axi_sels, ARRAY_SIZE(pcie_axi_sels)); clk[ssi1_sel] = imx_clk_fixup_mux("ssi1_sel", base + 0x1c, 10, 2, ssi_sels, ARRAY_SIZE(ssi_sels), imx_cscmr1_fixup); From 036acea2ceabd19cb5734ae7a9d64c0a5ef90484 Mon Sep 17 00:00:00 2001 From: Azat Khuzhin Date: Mon, 14 Apr 2014 23:36:15 -0400 Subject: [PATCH 105/623] ext4: fix ext4_count_free_clusters() with EXT4FS_DEBUG and bigalloc enabled With bigalloc enabled we must use EXT4_CLUSTERS_PER_GROUP() instead of EXT4_BLOCKS_PER_GROUP() otherwise we will go beyond the allocated buffer. $ mount -t ext4 /dev/vde /vde [ 70.573993] EXT4-fs DEBUG (fs/ext4/mballoc.c, 2346): ext4_mb_alloc_groupinfo: [ 70.575174] allocated s_groupinfo array for 1 meta_bg's [ 70.576172] EXT4-fs DEBUG (fs/ext4/super.c, 2092): ext4_check_descriptors: [ 70.576972] Checking group descriptorsBUG: unable to handle kernel paging request at ffff88006ab56000 [ 72.463686] IP: [] __bitmap_weight+0x2a/0x7f [ 72.464168] PGD 295e067 PUD 2961067 PMD 7fa8e067 PTE 800000006ab56060 [ 72.464738] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [ 72.465139] Modules linked in: [ 72.465402] CPU: 1 PID: 3560 Comm: mount Tainted: G W 3.14.0-rc2-00069-ge57bce1 #60 [ 72.466079] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 72.466505] task: ffff88007ce6c8a0 ti: ffff88006b7f0000 task.ti: ffff88006b7f0000 [ 72.466505] RIP: 0010:[] [] __bitmap_weight+0x2a/0x7f [ 72.466505] RSP: 0018:ffff88006b7f1c00 EFLAGS: 00010206 [ 72.466505] RAX: 0000000000000000 RBX: 000000000000050a RCX: 0000000000000040 [ 72.466505] RDX: 0000000000000000 RSI: 0000000000080000 RDI: 0000000000000000 [ 72.466505] RBP: ffff88006b7f1c28 R08: 0000000000000002 R09: 0000000000000000 [ 72.466505] R10: 000000000000babe R11: 0000000000000400 R12: 0000000000080000 [ 72.466505] R13: 0000000000000200 R14: 0000000000002000 R15: ffff88006ab55000 [ 72.466505] FS: 00007f43ba1fa840(0000) GS:ffff88007f800000(0000) knlGS:0000000000000000 [ 72.466505] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 72.466505] CR2: ffff88006ab56000 CR3: 000000006b7e6000 CR4: 00000000000006e0 [ 72.466505] Stack: [ 72.466505] ffff88006ab65000 0000000000000000 0000000000000000 0000000000010000 [ 72.466505] ffff88006ab6f400 ffff88006b7f1c58 ffffffff81396bb8 0000000000010000 [ 72.466505] 0000000000000000 ffff88007b869a90 ffff88006a48a000 ffff88006b7f1c70 [ 72.466505] Call Trace: [ 72.466505] [] memweight+0x5f/0x8a [ 72.466505] [] ext4_count_free+0x13/0x21 [ 72.466505] [] ext4_count_free_clusters+0xdb/0x171 [ 72.466505] [] ext4_fill_super+0x117c/0x28ef [ 72.466505] [] ? vsnprintf+0x1c7/0x3f7 [ 72.466505] [] mount_bdev+0x145/0x19c [ 72.466505] [] ? ext4_calculate_overhead+0x2a1/0x2a1 [ 72.466505] [] ext4_mount+0x15/0x17 [ 72.466505] [] mount_fs+0x67/0x150 [ 72.466505] [] vfs_kern_mount+0x64/0xde [ 72.466505] [] do_mount+0x6fe/0x7f5 [ 72.466505] [] ? strndup_user+0x3a/0xd9 [ 72.466505] [] SyS_mount+0x85/0xbe [ 72.466505] [] tracesys+0xdd/0xe2 [ 72.466505] Code: c3 89 f0 b9 40 00 00 00 55 99 48 89 e5 41 57 f7 f9 41 56 49 89 ff 41 55 45 31 ed 41 54 41 89 f4 53 31 db 41 89 c6 45 39 ee 7e 10 <4b> 8b 3c ef 49 ff c5 e8 bf ff ff ff 01 c3 eb eb 31 c0 45 85 f6 [ 72.466505] RIP [] __bitmap_weight+0x2a/0x7f [ 72.466505] RSP [ 72.466505] CR2: ffff88006ab56000 [ 72.466505] ---[ end trace 7d051a08ae138573 ]--- Killed Signed-off-by: "Theodore Ts'o" --- fs/ext4/balloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 6ea7b1436bbc..5c56785007e0 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -667,7 +667,7 @@ ext4_fsblk_t ext4_count_free_clusters(struct super_block *sb) continue; x = ext4_count_free(bitmap_bh->b_data, - EXT4_BLOCKS_PER_GROUP(sb) / 8); + EXT4_CLUSTERS_PER_GROUP(sb) / 8); printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n", i, ext4_free_group_clusters(sb, gdp), x); bitmap_count += x; From 50e02fd84543d82e663000e780e0ec0cfde52283 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 14 Apr 2014 23:37:35 -0400 Subject: [PATCH 106/623] ext4: remove temporary shim used to merge COLLAPSE_RANGE and ZERO_RANGE In retrospect, this was a bad way to handle things, since it limited testing of these patches. We should just get the VFS level changes merged in first. Signed-off-by: "Theodore Ts'o" --- include/trace/events/ext4.h | 9 --------- 1 file changed, 9 deletions(-) diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h index 010ea89eeb0e..6a1a0245474f 100644 --- a/include/trace/events/ext4.h +++ b/include/trace/events/ext4.h @@ -16,15 +16,6 @@ struct mpage_da_data; struct ext4_map_blocks; struct extent_status; -/* shim until we merge in the xfs_collapse_range branch */ -#ifndef FALLOC_FL_COLLAPSE_RANGE -#define FALLOC_FL_COLLAPSE_RANGE 0x08 -#endif - -#ifndef FALLOC_FL_ZERO_RANGE -#define FALLOC_FL_ZERO_RANGE 0x10 -#endif - #define EXT4_I(inode) (container_of(inode, struct ext4_inode_info, vfs_inode)) #define show_mballoc_flags(flags) __print_flags(flags, "|", \ From 9f05d3fb644bf178c169d9c70dcfe360e3a006ae Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Mon, 14 Apr 2014 22:01:30 -0700 Subject: [PATCH 107/623] iommu/vt-d: Fix get_domain_for_dev() handling of upstream PCIe bridges Commit 146922ec79 ("iommu/vt-d: Make get_domain_for_dev() take struct device") introduced new variables bridge_bus and bridge_devfn to identify the upstream PCIe to PCI bridge responsible for the given target device. Leaving the original bus/devfn variables to identify the target device itself, now that it is no longer assumed to be PCI and we can no longer trivially find that information. However, the patch failed to correctly use the new variables in all cases; instead using the as-yet-uninitialised 'bus' and 'devfn' variables. Reported-by: Alex Williamson Signed-off-by: David Woodhouse --- drivers/iommu/intel-iommu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 13dc2318e17a..f256ffc02e29 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2237,7 +2237,9 @@ static struct dmar_domain *get_domain_for_dev(struct device *dev, int gaw) bridge_devfn = dev_tmp->devfn; } spin_lock_irqsave(&device_domain_lock, flags); - info = dmar_search_domain_by_dev_info(segment, bus, devfn); + info = dmar_search_domain_by_dev_info(segment, + bridge_bus, + bridge_devfn); if (info) { iommu = info->iommu; domain = info->domain; From 5ae0566a0fffa09a77ac5996e3854fe91cd87167 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Tue, 15 Apr 2014 10:35:35 +0800 Subject: [PATCH 108/623] iommu/vt-d: fix bug in matching PCI devices with DRHD/RMRR descriptors Commit "59ce0515cdaf iommu/vt-d: Update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens" introduces a bug, which fails to match PCI devices with DMAR device scope entries if PCI path array in the entry has more than one level. For example, it fails to handle [1D2h 0466 1] Device Scope Entry Type : 01 [1D3h 0467 1] Entry Length : 0A [1D4h 0468 2] Reserved : 0000 [1D6h 0470 1] Enumeration ID : 00 [1D7h 0471 1] PCI Bus Number : 00 [1D8h 0472 2] PCI Path : 1C,04 [1DAh 0474 2] PCI Path : 00,02 And cause DMA failure on HP DL980 as: DMAR:[fault reason 02] Present bit in context entry is clear dmar: DRHD: handling fault status reg 602 dmar: DMAR:[DMA Read] Request device [02:00.2] fault addr 7f61e000 Reported-and-tested-by: Davidlohr Bueso Signed-off-by: Jiang Liu Signed-off-by: David Woodhouse --- drivers/iommu/dmar.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index f445c10df8df..39f8b717fe84 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -152,7 +152,8 @@ dmar_alloc_pci_notify_info(struct pci_dev *dev, unsigned long event) info->seg = pci_domain_nr(dev->bus); info->level = level; if (event == BUS_NOTIFY_ADD_DEVICE) { - for (tmp = dev, level--; tmp; tmp = tmp->bus->self) { + for (tmp = dev; tmp; tmp = tmp->bus->self) { + level--; info->path[level].device = PCI_SLOT(tmp->devfn); info->path[level].function = PCI_FUNC(tmp->devfn); if (pci_is_root_bus(tmp->bus)) From 6faff9b6bd3d2a279b806d721bb2257fdd2e6bf2 Mon Sep 17 00:00:00 2001 From: Max Schwarz Date: Sun, 9 Mar 2014 20:43:11 +0100 Subject: [PATCH 109/623] ARM: rockchip: rk3188: enable pull-ups on UART RX pins The default behaviour of the uart-rx pins on the rk3188 is to be pulled up and a lot of designs use diodes to even prevent them from being raised from the outside. Therefore change the rx-pin settings accordingly. This also fixes a uart receive problem on mass production Radxa Rock boards. Signed-off-by: Max Schwarz Signed-off-by: Heiko Stuebner --- arch/arm/boot/dts/rk3188.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/rk3188.dtsi b/arch/arm/boot/dts/rk3188.dtsi index bb36596ea205..ed9a70af3e3f 100644 --- a/arch/arm/boot/dts/rk3188.dtsi +++ b/arch/arm/boot/dts/rk3188.dtsi @@ -149,7 +149,7 @@ uart0 { uart0_xfer: uart0-xfer { - rockchip,pins = , + rockchip,pins = , ; }; @@ -164,7 +164,7 @@ uart1 { uart1_xfer: uart1-xfer { - rockchip,pins = , + rockchip,pins = , ; }; @@ -179,7 +179,7 @@ uart2 { uart2_xfer: uart2-xfer { - rockchip,pins = , + rockchip,pins = , ; }; /* no rts / cts for uart2 */ @@ -187,7 +187,7 @@ uart3 { uart3_xfer: uart3-xfer { - rockchip,pins = , + rockchip,pins = , ; }; From 5c4348c1f959234664e4667f428cf82b3b8a7c2c Mon Sep 17 00:00:00 2001 From: Heiko Stuebner Date: Fri, 11 Apr 2014 11:44:24 +0200 Subject: [PATCH 110/623] ARM: rockchip: fix copy'n'paste error in smp error messages The error emitted when mapping the pmu failed, wrongly mentions the sram. Reported-by: Kent Borg Signed-off-by: Heiko Stuebner --- arch/arm/mach-rockchip/platsmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-rockchip/platsmp.c b/arch/arm/mach-rockchip/platsmp.c index dbfa5a26cfff..072842f6491b 100644 --- a/arch/arm/mach-rockchip/platsmp.c +++ b/arch/arm/mach-rockchip/platsmp.c @@ -152,7 +152,7 @@ static void __init rockchip_smp_prepare_cpus(unsigned int max_cpus) node = of_find_compatible_node(NULL, NULL, "rockchip,rk3066-pmu"); if (!node) { - pr_err("%s: could not find sram dt node\n", __func__); + pr_err("%s: could not find pmu dt node\n", __func__); return; } From f1c6bb2cb8b81013e8979806f8e15e3d53efb96d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 15 Apr 2014 06:17:49 -0400 Subject: [PATCH 111/623] locks: allow __break_lease to sleep even when break_time is 0 A fl->fl_break_time of 0 has a special meaning to the lease break code that basically means "never break the lease". knfsd uses this to ensure that leases don't disappear out from under it. Unfortunately, the code in __break_lease can end up passing this value to wait_event_interruptible as a timeout, which prevents it from going to sleep at all. This makes __break_lease to spin in a tight loop and causes soft lockups. Fix this by ensuring that we pass a minimum value of 1 as a timeout instead. Cc: Cc: J. Bruce Fields Reported-by: Terry Barnaby Signed-off-by: Jeff Layton --- fs/locks.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 13fc7a6d380a..b380f5543614 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1391,11 +1391,10 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) restart: break_time = flock->fl_break_time; - if (break_time != 0) { + if (break_time != 0) break_time -= jiffies; - if (break_time == 0) - break_time++; - } + if (break_time == 0) + break_time++; locks_insert_block(flock, new_fl); spin_unlock(&inode->i_lock); error = wait_event_interruptible_timeout(new_fl->fl_wait, From 16c50dcfc4c186ed09a4d80fbd511492d024a1c5 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Fri, 28 Feb 2014 15:37:10 +0000 Subject: [PATCH 112/623] iommu/arm-smmu: Return 0 on unmap failure The IOMMU core expects the unmap operation to return the number of bytes that have been unmapped or 0 on failure, a negative return value being treated like a number of bytes. Signed-off-by: Laurent Pinchart Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 8b89e33a89fe..69d001a71b22 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1499,7 +1499,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova, ret = arm_smmu_handle_mapping(smmu_domain, iova, 0, size, 0); arm_smmu_tlb_inv_context(&smmu_domain->root_cfg); - return ret ? ret : size; + return ret ? 0 : size; } static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain, From aca1bc4595c5757f01167ab5bfef2a4f8edfcf4f Mon Sep 17 00:00:00 2001 From: Bin Wang Date: Fri, 21 Mar 2014 10:06:07 +0000 Subject: [PATCH 113/623] iommu/arm-smmu: fix panic in arm_smmu_alloc_init_pte MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit kernel panic happened when iommu_unmap a buffer larger than 2MB, more than expected pmd entries got “invalidated”, due to a wrong range passed to arm_smmu_alloc_init_pte. it was likely a typo, now we fix it, passing the correct "end" address to arm_smmu_alloc_init_pte. Signed-off-by: Bin Wang Signed-off-by: Will Deacon --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 69d001a71b22..647c3c7fd742 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1381,7 +1381,7 @@ static int arm_smmu_alloc_init_pmd(struct arm_smmu_device *smmu, pud_t *pud, do { next = pmd_addr_end(addr, end); - ret = arm_smmu_alloc_init_pte(smmu, pmd, addr, end, pfn, + ret = arm_smmu_alloc_init_pte(smmu, pmd, addr, next, pfn, prot, stage); phys += next - addr; } while (pmd++, addr = next, addr < end); From 3b5b24315781c744ab3868edee931ddb2145e6b5 Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Sat, 5 Apr 2014 23:35:53 +0200 Subject: [PATCH 114/623] ASoC: tlv320aic3x: fix shared reset pin for DT Currently the second tlv320aic3x instance fails to be probed from DT if the reset pin is shared with the first one. This patch fixes it by moving the list add of the reset pin into the i2c_probe method. Signed-off-by: Sebastian Reichel Signed-off-by: Mark Brown --- sound/soc/codecs/tlv320aic3x.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index b1835103e9b4..d7349bc89ad3 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -1399,7 +1399,6 @@ static int aic3x_probe(struct snd_soc_codec *codec) } aic3x_add_widgets(codec); - list_add(&aic3x->list, &reset_list); return 0; @@ -1569,7 +1568,13 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_aic3x, &aic3x_dai, 1); - return ret; + + if (ret != 0) + goto err_gpio; + + list_add(&aic3x->list, &reset_list); + + return 0; err_gpio: if (gpio_is_valid(aic3x->gpio_reset) && From 3608aeff47034faee7518ddec52d77fb811e952c Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 31 Mar 2014 19:52:44 +0200 Subject: [PATCH 115/623] pata_samsung_cf: fix ata_host_activate() failure handling Add missing clk_disable() call to ata_host_activate() failure path. Cc: Ben Dooks Cc: Kukjin Kim Signed-off-by: Bartlomiej Zolnierkiewicz Reviewed-by: Jingoo Han Signed-off-by: Tejun Heo --- drivers/ata/pata_samsung_cf.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c index a79566d05666..0610e78c8a2a 100644 --- a/drivers/ata/pata_samsung_cf.c +++ b/drivers/ata/pata_samsung_cf.c @@ -594,9 +594,13 @@ static int __init pata_s3c_probe(struct platform_device *pdev) platform_set_drvdata(pdev, host); - return ata_host_activate(host, info->irq, - info->irq ? pata_s3c_irq : NULL, - 0, &pata_s3c_sht); + ret = ata_host_activate(host, info->irq, + info->irq ? pata_s3c_irq : NULL, + 0, &pata_s3c_sht); + if (ret) + goto stop_clk; + + return 0; stop_clk: clk_disable(info->clk); From 8aaa414fadaec2b682168a5c937a3950a77956bf Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Tue, 15 Apr 2014 14:37:05 +0200 Subject: [PATCH 116/623] ASoC: alc5623: Fix regmap endianness Commit 0cd257bf9b9b0cbb4fa1a5c988a232506997867c, "ASoC: alc5623: Convert to direct regmap API usage" broke probing of the codec, because of wrong endinness of the ID and codec version read from the device. Fix this by removing the existing flipping of the endiannes, and extracting the codec type byte from the word from the regmap. Signed-off-by: Andrew Lunn Signed-off-by: Mark Brown --- sound/soc/codecs/alc5623.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/alc5623.c b/sound/soc/codecs/alc5623.c index f500905e9373..2acf82f4a08a 100644 --- a/sound/soc/codecs/alc5623.c +++ b/sound/soc/codecs/alc5623.c @@ -1018,13 +1018,13 @@ static int alc5623_i2c_probe(struct i2c_client *client, dev_err(&client->dev, "failed to read vendor ID1: %d\n", ret); return ret; } - vid1 = ((vid1 & 0xff) << 8) | (vid1 >> 8); ret = regmap_read(alc5623->regmap, ALC5623_VENDOR_ID2, &vid2); if (ret < 0) { dev_err(&client->dev, "failed to read vendor ID2: %d\n", ret); return ret; } + vid2 >>= 8; if ((vid1 != 0x10ec) || (vid2 != id->driver_data)) { dev_err(&client->dev, "unknown or wrong codec\n"); From 3a7745215e7f73a5c7d9bcdc50661a55b39052a3 Mon Sep 17 00:00:00 2001 From: Milan Broz Date: Mon, 14 Apr 2014 22:02:30 +0200 Subject: [PATCH 117/623] dm verity: fix biovecs hash calculation regression Commit 003b5c5719f159f4f4bf97511c4702a0638313dd ("block: Convert drivers to immutable biovecs") incorrectly converted biovec iteration in dm-verity to always calculate the hash from a full biovec, but the function only needs to calculate the hash from part of the biovec (up to the calculated "todo" value). Fix this issue by limiting hash input to only the requested data size. This problem was identified using the cryptsetup regression test for veritysetup (verity-compat-test). Signed-off-by: Milan Broz Acked-by: Mikulas Patocka Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org # 3.14+ --- drivers/md/dm-verity.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c index 796007a5e0e1..7a7bab8947ae 100644 --- a/drivers/md/dm-verity.c +++ b/drivers/md/dm-verity.c @@ -330,15 +330,17 @@ test_block_hash: return r; } } - todo = 1 << v->data_dev_block_bits; - while (io->iter.bi_size) { + do { u8 *page; + unsigned len; struct bio_vec bv = bio_iter_iovec(bio, io->iter); page = kmap_atomic(bv.bv_page); - r = crypto_shash_update(desc, page + bv.bv_offset, - bv.bv_len); + len = bv.bv_len; + if (likely(len >= todo)) + len = todo; + r = crypto_shash_update(desc, page + bv.bv_offset, len); kunmap_atomic(page); if (r < 0) { @@ -346,8 +348,9 @@ test_block_hash: return r; } - bio_advance_iter(bio, &io->iter, bv.bv_len); - } + bio_advance_iter(bio, &io->iter, len); + todo -= len; + } while (todo); if (!v->version) { r = crypto_shash_update(desc, v->salt, v->salt_size); From 3063a12be2b07c64e9802708a19489342e64c1a3 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 28 Mar 2014 14:31:47 -0500 Subject: [PATCH 118/623] usb: musb: fix PHY power on/off MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commi 30a70b0 (usb: musb: fix obex in g_nokia.ko causing kernel panic) removed phy_power_on() and phy_power_off() calls from runtime PM callbacks but it failed to note that the driver depended on pm_runtime_get_sync() calls to power up the PHY, thus leaving some platforms without any means to have a working PHY. Fix that by enabling the phy during omap2430_musb_init() and killing it in omap2430_musb_exit(). Fixes: 30a70b0 (usb: musb: fix obex in g_nokia.ko causing kernel panic) Cc: # v3.14 Cc: Pali Rohár Cc: Ivaylo Dimitrov Reported-by: Michael Scott Tested-by: Michael Scott Tested-by: Stefan Roese Reported-by: Rabin Vincent Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index d341c149a2f9..819a7cdcb866 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -416,6 +416,7 @@ static int omap2430_musb_init(struct musb *musb) omap_musb_set_mailbox(glue); phy_init(musb->phy); + phy_power_on(musb->phy); pm_runtime_put_noidle(musb->controller); return 0; @@ -478,6 +479,7 @@ static int omap2430_musb_exit(struct musb *musb) del_timer_sync(&musb_idle_timer); omap2430_low_level_exit(musb); + phy_power_off(musb->phy); phy_exit(musb->phy); return 0; From 8b2bc2c9351b4c09bc3d9096e2a7af3988565dbf Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 7 Apr 2014 10:58:01 -0500 Subject: [PATCH 119/623] usb: musb: omap2430: make sure clocks are enabled when running mailbox on early initialization we could fall into a situation where the mailbox is called before MUSB's clocks are running, in order to avoid that, make sure mailbox is always wrapped with pm_runtime calls. Reported-by: Stefan Roese Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 819a7cdcb866..d369bf1f3936 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -316,7 +316,13 @@ static void omap_musb_mailbox_work(struct work_struct *mailbox_work) { struct omap2430_glue *glue = container_of(mailbox_work, struct omap2430_glue, omap_musb_mailbox_work); + struct musb *musb = glue_to_musb(glue); + struct device *dev = musb->controller; + + pm_runtime_get_sync(dev); omap_musb_set_mailbox(glue); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); } static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) From 2dda47d1a416750bf69eb11dd9b6607d18287b0c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 3 Apr 2014 11:32:06 +0200 Subject: [PATCH 120/623] platform: Fix timberdale dependencies VIDEO_TIMBERDALE selects TIMB_DMA which itself depends on MFD_TIMBERDALE, so VIDEO_TIMBERDALE should either select or depend on MFD_TIMBERDALE as well. I chose to make it depend on it because I think it makes more sense and it is consistent with what other options are doing. Adding a "|| HAS_IOMEM" to the TIMB_DMA dependencies silenced the kconfig warning about unmet direct dependencies but it was wrong: without MFD_TIMBERDALE, TIMB_DMA is useless as the driver has no device to bind to. Signed-off-by: Jean Delvare Cc: Vinod Koul Cc: Dan Williams Cc: Mauro Carvalho Chehab Signed-off-by: Vinod Koul --- drivers/dma/Kconfig | 2 +- drivers/media/platform/Kconfig | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index ba06d1d2f99e..5c5863842de9 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -197,7 +197,7 @@ config AMCC_PPC440SPE_ADMA config TIMB_DMA tristate "Timberdale FPGA DMA support" - depends on MFD_TIMBERDALE || HAS_IOMEM + depends on MFD_TIMBERDALE select DMA_ENGINE help Enable support for the Timberdale FPGA DMA engine. diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index c137abfa0c54..20f1655e6d75 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -56,7 +56,7 @@ config VIDEO_VIU config VIDEO_TIMBERDALE tristate "Support for timberdale Video In/LogiWIN" - depends on VIDEO_V4L2 && I2C && DMADEVICES + depends on MFD_TIMBERDALE && VIDEO_V4L2 && I2C && DMADEVICES select DMA_ENGINE select TIMB_DMA select VIDEO_ADV7180 From f3817e777ca3a089381a5b2370fbb869c3bcce6f Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 3 Apr 2014 10:29:33 +0300 Subject: [PATCH 121/623] dmaengine: sirf: off by one in of_dma_sirfsoc_xlate() The ">" here should be ">=" or we are one step beyond the end of the sdma->channels[] array. Fixes: 2e041c94628c ('dmaengine: sirf: enable generic dt binding for dma channels') Signed-off-by: Dan Carpenter Acked-by: Barry Song Signed-off-by: Vinod Koul --- drivers/dma/sirf-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sirf-dma.c b/drivers/dma/sirf-dma.c index a1bd8298d55f..03f7820fa333 100644 --- a/drivers/dma/sirf-dma.c +++ b/drivers/dma/sirf-dma.c @@ -666,7 +666,7 @@ static struct dma_chan *of_dma_sirfsoc_xlate(struct of_phandle_args *dma_spec, struct sirfsoc_dma *sdma = ofdma->of_dma_data; unsigned int request = dma_spec->args[0]; - if (request > SIRFSOC_DMA_CHANNELS) + if (request >= SIRFSOC_DMA_CHANNELS) return NULL; return dma_get_slave_channel(&sdma->channels[request].chan); From 8edc51c197b8f409bef7b21755254e6f3ce7ed23 Mon Sep 17 00:00:00 2001 From: Yuan Yao Date: Fri, 4 Apr 2014 12:27:55 +0800 Subject: [PATCH 122/623] dma: fix eDMA driver as a subsys_initcall Because of some driver base on DMA, changed the initcall order as subsys_initcall. Signed-off-by: Yuan Yao Signed-off-by: Vinod Koul --- drivers/dma/fsl-edma.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c index 381e793184ba..b396a7fb53ab 100644 --- a/drivers/dma/fsl-edma.c +++ b/drivers/dma/fsl-edma.c @@ -968,7 +968,17 @@ static struct platform_driver fsl_edma_driver = { .remove = fsl_edma_remove, }; -module_platform_driver(fsl_edma_driver); +static int __init fsl_edma_init(void) +{ + return platform_driver_register(&fsl_edma_driver); +} +subsys_initcall(fsl_edma_init); + +static void __exit fsl_edma_exit(void) +{ + platform_driver_unregister(&fsl_edma_driver); +} +module_exit(fsl_edma_exit); MODULE_ALIAS("platform:fsl-edma"); MODULE_DESCRIPTION("Freescale eDMA engine driver"); From 32702e96a9f76ea0e0a1d218310d2ac1adbd2907 Mon Sep 17 00:00:00 2001 From: Jack Pham Date: Wed, 26 Mar 2014 10:31:44 -0700 Subject: [PATCH 123/623] usb: dwc3: gadget: Iterate only over valid endpoints Make dwc3_gadget_resize_tx_fifos() iterate only over IN endpoints that are actually present, based on the num_in_eps parameter. This terminates the loop so as to prevent dereferencing a potential NULL dwc->eps[i] where i >= (num_in_eps + num_out_eps). Signed-off-by: Jack Pham Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index a740eac74d56..70715eeededd 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -187,15 +187,12 @@ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc) * improve this algorithm so that we better use the internal * FIFO space */ - for (num = 0; num < DWC3_ENDPOINTS_NUM; num++) { - struct dwc3_ep *dep = dwc->eps[num]; - int fifo_number = dep->number >> 1; + for (num = 0; num < dwc->num_in_eps; num++) { + /* bit0 indicates direction; 1 means IN ep */ + struct dwc3_ep *dep = dwc->eps[(num << 1) | 1]; int mult = 1; int tmp; - if (!(dep->number & 1)) - continue; - if (!(dep->flags & DWC3_EP_ENABLED)) continue; @@ -224,8 +221,7 @@ int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc) dev_vdbg(dwc->dev, "%s: Fifo Addr %04x Size %d\n", dep->name, last_fifo_depth, fifo_size & 0xffff); - dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(fifo_number), - fifo_size); + dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(num), fifo_size); last_fifo_depth += (fifo_size & 0xffff); } From 9c1b70361e0b38e4acb8e62b54da66538cb77ff2 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 26 Mar 2014 18:46:38 +0200 Subject: [PATCH 124/623] usb: gadget: zero: Fix SuperSpeed enumeration for alternate setting 1 It was impossible to enumerate on a SuperSpeed (XHCI) host with alternate setting = 1 due to the wrongly set 'bMaxBurst' field in the SuperSpeed Endpoint Companion descriptor. Testcase: modprobe -r usbtest; modprobe usbtest alt=1 modprobe g_zero plug device to SuperSpeed port on the host. Without this patch the host always complains like so "usb 12-2: Not enough bandwidth for new device state. usb 12-2: Not enough bandwidth for altsetting 1" Bug was introduced by commit cf9a08ae in v3.9 Fixes: cf9a08ae5aec (usb: gadget: convert source sink and loopback to new function interface) Cc: 3.9+ # 3.9+ Reviewed-by: Felipe Balbi Acked-by: Sebastian Andrzej Siewior Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/gadget/zero.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index 9f170c53e3d9..134f354ede62 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -300,7 +300,7 @@ static int __init zero_bind(struct usb_composite_dev *cdev) ss_opts->isoc_interval = gzero_options.isoc_interval; ss_opts->isoc_maxpacket = gzero_options.isoc_maxpacket; ss_opts->isoc_mult = gzero_options.isoc_mult; - ss_opts->isoc_maxburst = gzero_options.isoc_maxpacket; + ss_opts->isoc_maxburst = gzero_options.isoc_maxburst; ss_opts->bulk_buflen = gzero_options.bulk_buflen; func_ss = usb_get_function(func_inst_ss); From f45e5f00dacf09362a16339d372fcc96705e40c7 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 26 Mar 2014 11:43:09 +0200 Subject: [PATCH 125/623] usb: dwc3: core: Fix gadget for system suspend/resume During system resume, if the event buffers are not setup before the gadget controller starts then we start with invalid context and this can lead to bus access errors. This is especially true for platforms that loose the controller context during system suspend. e.g. AM437x. The following backtrace was found when the system is suspended and resumed with g_zero loaded on AM437x-evm (USB cable connected to host all the while). [ 120.981506] WARNING: CPU: 0 PID: 1656 at drivers/bus/omap_l3_noc.c:137 l3_interrupt_handler+0x198/0x28c() [ 120.981514] L3 custom error: MASTER:USB0 WR TARGET:GPMC [ 120.981638] Modules linked in: g_mass_storage usb_f_mass_storage libcomposite configfs bufferclass_ti(O) omaplfb(O) cryptodev(O) dwc3 snd_soc_evm snd_soc_omap snd_pe [ 120.981659] CPU: 0 PID: 1656 Comm: sh Tainted: G O 3.12.10-gc559824 #1 [ 120.981669] Backtrace: [ 120.981705] [] (dump_backtrace+0x0/0x10c) from [] (show_stack+0x18/0x1c) [ 120.981730] r6:c02819ac r5:00000009 r4:ec137cb8 r3:00000000 [ 120.981767] [] (show_stack+0x0/0x1c) from [] (dump_stack+0x20/0x28) [ 120.981802] [] (dump_stack+0x0/0x28) from [] (warn_slowpath_common+0x70/0x90) [ 120.981830] [] (warn_slowpath_common+0x0/0x90) from [] (warn_slowpath_fmt+0x38/0x40) [ 120.981856] r8:c0855eb0 r7:00000002 r6:f1000700 r5:00000007 r4:80080003 [ 120.981886] [] (warn_slowpath_fmt+0x0/0x40) from [] (l3_interrupt_handler+0x198/0x28c) [ 120.981900] r3:c0801ab8 r2:c06cb354 [ 120.981936] [] (l3_interrupt_handler+0x0/0x28c) from [] (handle_irq_event_percpu+0x54/0x1b8) [ 120.981962] [] (handle_irq_event_percpu+0x0/0x1b8) from [] (handle_irq_event+0x30/0x40) [ 120.981993] [] (handle_irq_event+0x0/0x40) from [] (handle_fasteoi_irq+0x74/0x128) [ 120.982006] r4:ed0056c0 r3:00000000 [ 120.982033] [] (handle_fasteoi_irq+0x0/0x128) from [] (generic_handle_irq+0x28/0x38) [ 120.982046] r4:0000002a r3:c0073fe4 [ 120.982085] [] (generic_handle_irq+0x0/0x38) from [] (handle_IRQ+0x38/0x8c) [ 120.982098] r4:c080137c r3:00000182 [ 120.982124] [] (handle_IRQ+0x0/0x8c) from [] (gic_handle_irq+0x30/0x5c) [ 120.982145] r6:ec137dd0 r5:c07ac480 r4:fa24010c r3:00000100 [ 120.982169] [] (gic_handle_irq+0x0/0x5c) from [] (__irq_svc+0x40/0x54) [ 120.982179] Exception stack(0xec137dd0 to 0xec137e18) [ 120.982195] 7dc0: 00000000 a00001d3 00000000 00000004 [ 120.982216] 7de0: a0000153 ec1d9010 c080de90 ec137e30 c080debc 00000000 ed756e44 ec137e2c [ 120.982232] 7e00: ec137de0 ec137e18 bf1150e4 bf115474 60000153 ffffffff [ 120.982253] r7:ec137e04 r6:ffffffff r5:60000153 r4:bf115474 [ 120.982327] [] (dwc3_complete+0x0/0x40 [dwc3]) from [] (dpm_complete+0xd4/0x19c) [ 120.982341] r5:ed756e10 r4:ed756e64 [ 120.982370] [] (dpm_complete+0x0/0x19c) from [] (dpm_resume_end+0x1c/0x20) [ 120.982400] [] (dpm_resume_end+0x0/0x20) from [] (suspend_devices_and_enter+0x118/0x33c) [ 120.982412] r4:c0833da4 r3:00000000 [ 120.982436] [] (suspend_devices_and_enter+0x0/0x33c) from [] (pm_suspend+0x218/0x254) [ 120.982458] [] (pm_suspend+0x0/0x254) from [] (state_store+0x70/0xc0) [ 120.982478] r6:c057a6cc r5:c06a8320 r4:00000003 r3:0000006d [ 120.982515] [] (state_store+0x0/0xc0) from [] (kobj_attr_store+0x1c/0x28) [ 120.982546] [] (kobj_attr_store+0x0/0x28) from [] (sysfs_write_file+0x170/0x1a4) [ 120.982583] [] (sysfs_write_file+0x0/0x1a4) from [] (vfs_write+0xb8/0x190) [ 120.982611] [] (vfs_write+0x0/0x190) from [] (SyS_write+0x44/0x78) [ 120.982641] [] (SyS_write+0x0/0x78) from [] (ret_fast_syscall+0x0/0x30) Signed-off-by: Roger Quadros Acked-by: Felipe Balbi Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index d001417e8e37..10aaaae9af25 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -821,6 +821,7 @@ static void dwc3_complete(struct device *dev) spin_lock_irqsave(&dwc->lock, flags); + dwc3_event_buffers_setup(dwc); switch (dwc->dr_mode) { case USB_DR_MODE_PERIPHERAL: case USB_DR_MODE_OTG: @@ -828,7 +829,6 @@ static void dwc3_complete(struct device *dev) /* FALLTHROUGH */ case USB_DR_MODE_HOST: default: - dwc3_event_buffers_setup(dwc); break; } From 5cdf7d5be8443ba0e14a5cfe551c59f931983647 Mon Sep 17 00:00:00 2001 From: Lubomir Rintel Date: Thu, 27 Mar 2014 08:09:21 +0100 Subject: [PATCH 126/623] usb: gadget: gadgetfs: Initialize CHIP to NULL before UDC probe Otherwise the value from the last probe would be retained that possibly is freed since (the UDC is removed) and therefore no longer relevant. Reproducible with the dummy UDC: modprobe dummy_hcd mount -t gadgetfs gadgetfs /dev/gadget umount /dev/gadget rmmod dummy_hcd mount -t gadgetfs gadgetfs /dev/gadget BUG: unable to handle kernel paging request at ffffffffa066fd9d Call Trace: [] ? d_alloc_name+0x22/0x50 [] ? selinux_d_instantiate+0x1c/0x20 [] gadgetfs_create_file+0x27/0xa0 [gadgetfs] [] ? setup_req.isra.4+0x80/0x80 [gadgetfs] [] gadgetfs_fill_super+0x13c/0x180 [gadgetfs] [] mount_single+0x92/0xc0 [] gadgetfs_mount+0x18/0x20 [gadgetfs] [] mount_fs+0x39/0x1b0 [] ? __alloc_percpu+0x10/0x20 [] vfs_kern_mount+0x63/0xf0 [] do_mount+0x23e/0xac0 [] ? strndup_user+0x4b/0xf0 [] SyS_mount+0x83/0xc0 [] system_call_fastpath+0x16/0x1b Signed-off-by: Lubomir Rintel Signed-off-by: Felipe Balbi --- drivers/usb/gadget/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index b5be6f0308c2..a925d0cbcd41 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -2043,6 +2043,7 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent) return -ESRCH; /* fake probe to determine $CHIP */ + CHIP = NULL; usb_gadget_probe_driver(&probe_driver); if (!CHIP) return -ENODEV; From 0fca91b8a446d4a38b8f3d4772c4a8665ebcd7b2 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Wed, 2 Apr 2014 11:46:51 +0200 Subject: [PATCH 127/623] usb: musb: dsps: move debugfs_remove_recursive() When the platform initialization fails due to missing resources, it will return -EPROBE_DEFER after dsps_musb_init() has been called. dsps_musb_init() calls dsps_musb_dbg_init() to allocate the debugfs nodes. At a later point in time, the probe will be retried, and dsps_musb_dbg_init() will be called again. debugfs_create_dir() will fail this time, as the node already exists, and so the entire device probe will fail with -ENOMEM. Fix this by moving debugfs_remove_recursive() from dsps_remove() to the plaform's exit function, so it will be cleanly torn down when the probe fails. It also feels more natural this way, as .exit is the counterpart to .init. Signed-off-by: Daniel Mack Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_dsps.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 3372ded5def7..e2fd263585de 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -470,8 +470,9 @@ static int dsps_musb_exit(struct musb *musb) struct dsps_glue *glue = dev_get_drvdata(dev->parent); del_timer_sync(&glue->timer); - usb_phy_shutdown(musb->xceiv); + debugfs_remove_recursive(glue->dbgfs_root); + return 0; } @@ -708,8 +709,6 @@ static int dsps_remove(struct platform_device *pdev) pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); - debugfs_remove_recursive(glue->dbgfs_root); - return 0; } From fc696881c6ec991f39a2f93d41f9ae841c6ace38 Mon Sep 17 00:00:00 2001 From: Suresh Gupta Date: Wed, 2 Apr 2014 22:26:46 +0530 Subject: [PATCH 128/623] usb : gadget : fsl: fix the fault issue on rmmod completion in udc_controller->done should be assign with proper value before complete called. The complete called in fsl_udc_release which intern called from usb_del_gadget_udc, so moving assignment before calling usb_del_gadget_udc Signed-off-by: Suresh Gupta Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fsl_udc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index 15960af0f67e..dcd0b07ae3a0 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -2532,8 +2532,8 @@ static int __exit fsl_udc_remove(struct platform_device *pdev) if (!udc_controller) return -ENODEV; - usb_del_gadget_udc(&udc_controller->gadget); udc_controller->done = &done; + usb_del_gadget_udc(&udc_controller->gadget); fsl_udc_clk_release(); From ae8dd0cc4146740e24ffb2092530c47e838001c5 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Fri, 4 Apr 2014 22:27:59 -0300 Subject: [PATCH 129/623] usb: gadget: rndis: Include "u_rndis.h" Include "u_rndis.h" in order to fix the following sparse warning: drivers/usb/gadget/rndis.c:1144:5: warning: symbol 'rndis_init' was not declared. Should it be static? drivers/usb/gadget/rndis.c:1177:6: warning: symbol 'rndis_exit' was not declared. Should it be static? Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi --- drivers/usb/gadget/rndis.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index d822d822efb3..7ed452d90f4d 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -35,6 +35,7 @@ #include #include +#include "u_rndis.h" #undef VERBOSE_DEBUG From 9dc9cb0c9ad0f999e29ce4c4f307cd2abbe752d3 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Tue, 15 Apr 2014 07:58:15 +0200 Subject: [PATCH 130/623] usb: phy: return an error in usb_get_phy() if try_module_get() fails In case we found a matching USB PHY in usb_get_phy() but the call to try_module_get() fails, we shouldn't return a (probably soon dangling) pointer but an ERR_PTR instead. Signed-off-by: Mathias Krause Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 8afa813d690b..36b6bce33b20 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -132,6 +132,9 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type) if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { pr_debug("PHY: unable to find transceiver of type %s\n", usb_phy_type_string(type)); + if (!IS_ERR(phy)) + phy = ERR_PTR(-ENODEV); + goto err0; } From 97839ca4b06ab27790700ad7da6be9a75fc0cc1d Mon Sep 17 00:00:00 2001 From: Chao Bi Date: Mon, 14 Apr 2014 11:19:53 +0800 Subject: [PATCH 131/623] usb: gadget: ffs: race between ffs_epfile_io() and ffs_func_eps_disable() ffs_epfile_io() is called from userspace, while ffs_func_eps_disable() might be called from USB disconnect interrupt, the two functions would run in parallel but they are not well protected, that epfile->ep would be removed by ffs_func_eps_disable() during ffs_epfile_io() is referring this pointer, then it leads to kernel PANIC. The scenario is as below: Thread 1 Thread 2 | | SyS_read dwc3_gadget_disconnect_interrupt | | ffs_epfile_read reset_config | | ffs_epfile_io ffs_func_eps_disable | | ----- usb_ep_disable(): epfile->ep->ep->desc = NULL | | usb_ep_align_maybe(): ----- it refers ep->desc->wMaxPacketSize ----- Signed-off-by: Chao Bi Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 2e164dca08e8..1e12b3ee56fd 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -745,6 +745,12 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) */ struct usb_gadget *gadget = epfile->ffs->gadget; + spin_lock_irq(&epfile->ffs->eps_lock); + /* In the meantime, endpoint got disabled or changed. */ + if (epfile->ep != ep) { + spin_unlock_irq(&epfile->ffs->eps_lock); + return -ESHUTDOWN; + } /* * Controller may require buffer size to be aligned to * maxpacketsize of an out endpoint. @@ -752,6 +758,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) data_len = io_data->read ? usb_ep_align_maybe(gadget, ep->ep, io_data->len) : io_data->len; + spin_unlock_irq(&epfile->ffs->eps_lock); data = kmalloc(data_len, GFP_KERNEL); if (unlikely(!data)) From 9ae794ac5e407d3bc3fec785db481d5a2c0fa275 Mon Sep 17 00:00:00 2001 From: David Milburn Date: Wed, 16 Apr 2014 11:43:46 -0500 Subject: [PATCH 132/623] ahci: do not request irq for dummy port System may crash in ahci_hw_interrupt() or ahci_thread_fn() when accessing the interrupt status in a port's private_data if the port is actually a DUMMY port. 00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller [ 9.352080] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x1 impl SATA mode [ 9.352084] ahci 0000:00:1f.2: flags: 64bit ncq sntf pm led clo pio slum part ccc [ 9.368155] Console: switching to colour frame buffer device 128x48 [ 9.439759] mgag200 0000:11:00.0: fb0: mgadrmfb frame buffer device [ 9.446765] mgag200 0000:11:00.0: registered panic notifier [ 9.470166] scsi1 : ahci [ 9.479166] scsi2 : ahci [ 9.488172] scsi3 : ahci [ 9.497174] scsi4 : ahci [ 9.506175] scsi5 : ahci [ 9.515174] scsi6 : ahci [ 9.518181] ata1: SATA max UDMA/133 abar m2048@0x95c00000 port 0x95c00100 irq 91 [ 9.526448] ata2: DUMMY [ 9.529182] ata3: DUMMY [ 9.531916] ata4: DUMMY [ 9.534650] ata5: DUMMY [ 9.537382] ata6: DUMMY [ 9.576196] [drm] Initialized mgag200 1.0.0 20110418 for 0000:11:00.0 on minor 0 [ 9.845257] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 9.865161] ata1.00: ATAPI: Optiarc DVD RW AD-7580S, FX04, max UDMA/100 [ 9.891407] ata1.00: configured for UDMA/100 [ 9.900525] scsi 1:0:0:0: CD-ROM Optiarc DVD RW AD-7580S FX04 PQ: 0 ANSI: 5 [ 10.247399] iTCO_vendor_support: vendor-support=0 [ 10.261572] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11 [ 10.269764] iTCO_wdt: unable to reset NO_REBOOT flag, device disabled by hardware/BIOS [ 10.301932] sd 0:2:0:0: [sda] 570310656 512-byte logical blocks: (291 GB/271 GiB) [ 10.317085] sd 0:2:0:0: [sda] Write Protect is off [ 10.328326] sd 0:2:0:0: [sda] Write cache: disabled, read cache: disabled, supports DPO and FUA [ 10.375452] BUG: unable to handle kernel NULL pointer dereference at 000000000000003c [ 10.384217] IP: [] ahci_hw_interrupt+0x100/0x130 [libahci] [ 10.392101] PGD 0 [ 10.394353] Oops: 0000 [#1] SMP [ 10.397978] Modules linked in: sr_mod(+) cdrom sd_mod iTCO_wdt crc_t10dif iTCO_vendor_support crct10dif_common ahci libahci libata lpc_ich mfd_core mgag200 syscopyarea sysfillrect sysimgblt i2c_algo_bit drm_kms_helper ttm drm i2c_core megaraid_sas dm_mirror dm_region_hash dm_log dm_mod [ 10.426499] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.15.0-rc1 #1 [ 10.433495] Hardware name: QCI QSSC-S4R/QSSC-S4R, BIOS QSSC-S4R.QCI.01.00.S013.032920111005 03/29/2011 [ 10.443886] task: ffffffff81906460 ti: ffffffff818f0000 task.ti: ffffffff818f0000 [ 10.452239] RIP: 0010:[] [] ahci_hw_interrupt+0x100/0x130 [libahci] [ 10.462838] RSP: 0018:ffff880033c03d98 EFLAGS: 00010046 [ 10.468767] RAX: 0000000000a400a4 RBX: ffff880029a6bc18 RCX: 00000000fffffffa [ 10.476731] RDX: 00000000000000a4 RSI: ffff880029bb0000 RDI: ffff880029a6bc18 [ 10.484696] RBP: ffff880033c03dc8 R08: 0000000000000000 R09: ffff88002f800490 [ 10.492661] R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000000 [ 10.500625] R13: ffff880029a6bd98 R14: 0000000000000000 R15: ffffc90000194000 [ 10.508590] FS: 0000000000000000(0000) GS:ffff880033c00000(0000) knlGS:0000000000000000 [ 10.517623] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 10.524035] CR2: 000000000000003c CR3: 00000000328ff000 CR4: 00000000000007b0 [ 10.531999] Stack: [ 10.534241] 0000000000000017 ffff880031ba7d00 000000000000005c ffff880031ba7d00 [ 10.542535] 0000000000000000 000000000000005c ffff880033c03e10 ffffffff810c2a1e [ 10.550827] ffff880031ae2900 000000008108fb4f ffff880031ae2900 ffff880031ae2984 [ 10.559121] Call Trace: [ 10.561849] [ 10.563994] [] handle_irq_event_percpu+0x3e/0x1a0 [ 10.571309] [] handle_irq_event+0x3d/0x60 [ 10.577631] [] try_one_irq.isra.6+0x8d/0xf0 [ 10.584142] [] note_interrupt+0x173/0x1f0 [ 10.590460] [] handle_irq_event_percpu+0xae/0x1a0 [ 10.597554] [] handle_irq_event+0x3d/0x60 [ 10.603872] [] handle_edge_irq+0x77/0x130 [ 10.610199] [] handle_irq+0xbf/0x150 [ 10.616040] [] ? vtime_account_idle+0xe/0x50 [ 10.622654] [] ? atomic_notifier_call_chain+0x1a/0x20 [ 10.630140] [] do_IRQ+0x4f/0xf0 [ 10.635490] [] common_interrupt+0x6d/0x6d [ 10.641805] [ 10.643950] [] ? cpuidle_enter_state+0x4f/0xc0 [ 10.650972] [] ? cpuidle_enter_state+0x48/0xc0 [ 10.657775] [] cpuidle_enter+0x17/0x20 [ 10.663807] [] cpu_startup_entry+0x2c0/0x3d0 [ 10.670423] [] rest_init+0x77/0x80 [ 10.676065] [] start_kernel+0x40f/0x41a [ 10.682190] [] ? repair_env_string+0x5c/0x5c [ 10.688799] [] ? early_idt_handlers+0x120/0x120 [ 10.695699] [] x86_64_start_reservations+0x2a/0x2c [ 10.702889] [] x86_64_start_kernel+0x143/0x152 [ 10.709689] Code: a0 fc ff 85 c0 8b 4d d4 74 c3 48 8b 7b 08 89 ca 48 c7 c6 60 66 13 a0 31 c0 e8 9d 70 28 e1 8b 4d d4 eb aa 0f 1f 84 00 00 00 00 00 <45> 8b 64 24 3c 48 89 df e8 23 47 4c e1 41 83 fc 01 19 c0 48 83 [ 10.731470] RIP [] ahci_hw_interrupt+0x100/0x130 [libahci] [ 10.739441] RSP [ 10.743333] CR2: 000000000000003c [ 10.747032] ---[ end trace b6e82636970e2690 ]--- [ 10.760190] Kernel panic - not syncing: Fatal exception in interrupt [ 10.767291] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) Cc: Alexander Gordeev Cc: Tejun Heo Cc: Signed-of-by: David Milburn Fixes: 5ca72c4f7c41 ("AHCI: Support multiple MSIs") --- drivers/ata/ahci.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 5a0bf8ed649b..e45b18ee04c3 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1232,18 +1232,14 @@ int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis) return rc; for (i = 0; i < host->n_ports; i++) { - const char* desc; struct ahci_port_priv *pp = host->ports[i]->private_data; /* pp is NULL for dummy ports */ if (pp) - desc = pp->irq_desc; - else - desc = dev_driver_string(host->dev); - - rc = devm_request_threaded_irq(host->dev, - irq + i, ahci_hw_interrupt, ahci_thread_fn, IRQF_SHARED, - desc, host->ports[i]); + rc = devm_request_threaded_irq(host->dev, + irq + i, ahci_hw_interrupt, + ahci_thread_fn, IRQF_SHARED, + pp->irq_desc, host->ports[i]); if (rc) goto out_free_irqs; } From e02ba72aabfade4c9cd6e3263e9b57bf890ad25c Mon Sep 17 00:00:00 2001 From: Anatol Pomozov Date: Tue, 15 Apr 2014 11:31:33 -0700 Subject: [PATCH 133/623] aio: block io_destroy() until all context requests are completed deletes aio context and all resources related to. It makes sense that no IO operations connected to the context should be running after the context is destroyed. As we removed io_context we have no chance to get requests status or call io_getevents(). man page for io_destroy says that this function may block until all context's requests are completed. Before kernel 3.11 io_destroy() blocked indeed, but since aio refactoring in 3.11 it is not true anymore. Here is a pseudo-code that shows a testcase for a race condition discovered in 3.11: initialize io_context io_submit(read to buffer) io_destroy() // context is destroyed so we can free the resources free(buffers); // if the buffer is allocated by some other user he'll be surprised // to learn that the buffer still filled by an outstanding operation // from the destroyed io_context The fix is straight-forward - add a completion struct and wait on it in io_destroy, complete() should be called when number of in-fligh requests reaches zero. If two or more io_destroy() called for the same context simultaneously then only the first one waits for IO completion, other calls behaviour is undefined. Tested: ran http://pastebin.com/LrPsQ4RL testcase for several hours and do not see the race condition anymore. Signed-off-by: Anatol Pomozov Signed-off-by: Benjamin LaHaise --- fs/aio.c | 36 ++++++++++++++++++++++++++++++++---- 1 file changed, 32 insertions(+), 4 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index 12a3de0ee6da..2adbb0398ab9 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -112,6 +112,11 @@ struct kioctx { struct work_struct free_work; + /* + * signals when all in-flight requests are done + */ + struct completion *requests_done; + struct { /* * This counts the number of available slots in the ringbuffer, @@ -508,6 +513,10 @@ static void free_ioctx_reqs(struct percpu_ref *ref) { struct kioctx *ctx = container_of(ref, struct kioctx, reqs); + /* At this point we know that there are no any in-flight requests */ + if (ctx->requests_done) + complete(ctx->requests_done); + INIT_WORK(&ctx->free_work, free_ioctx); schedule_work(&ctx->free_work); } @@ -718,7 +727,8 @@ err: * when the processes owning a context have all exited to encourage * the rapid destruction of the kioctx. */ -static void kill_ioctx(struct mm_struct *mm, struct kioctx *ctx) +static void kill_ioctx(struct mm_struct *mm, struct kioctx *ctx, + struct completion *requests_done) { if (!atomic_xchg(&ctx->dead, 1)) { struct kioctx_table *table; @@ -747,7 +757,11 @@ static void kill_ioctx(struct mm_struct *mm, struct kioctx *ctx) if (ctx->mmap_size) vm_munmap(ctx->mmap_base, ctx->mmap_size); + ctx->requests_done = requests_done; percpu_ref_kill(&ctx->users); + } else { + if (requests_done) + complete(requests_done); } } @@ -809,7 +823,7 @@ void exit_aio(struct mm_struct *mm) */ ctx->mmap_size = 0; - kill_ioctx(mm, ctx); + kill_ioctx(mm, ctx, NULL); } } @@ -1185,7 +1199,7 @@ SYSCALL_DEFINE2(io_setup, unsigned, nr_events, aio_context_t __user *, ctxp) if (!IS_ERR(ioctx)) { ret = put_user(ioctx->user_id, ctxp); if (ret) - kill_ioctx(current->mm, ioctx); + kill_ioctx(current->mm, ioctx, NULL); percpu_ref_put(&ioctx->users); } @@ -1203,8 +1217,22 @@ SYSCALL_DEFINE1(io_destroy, aio_context_t, ctx) { struct kioctx *ioctx = lookup_ioctx(ctx); if (likely(NULL != ioctx)) { - kill_ioctx(current->mm, ioctx); + struct completion requests_done = + COMPLETION_INITIALIZER_ONSTACK(requests_done); + + /* Pass requests_done to kill_ioctx() where it can be set + * in a thread-safe way. If we try to set it here then we have + * a race condition if two io_destroy() called simultaneously. + */ + kill_ioctx(current->mm, ioctx, &requests_done); percpu_ref_put(&ioctx->users); + + /* Wait until all IO for the context are done. Otherwise kernel + * keep using user-space buffers even if user thinks the context + * is destroyed. + */ + wait_for_completion(&requests_done); + return 0; } pr_debug("EINVAL: io_destroy: invalid context id\n"); From 06cd7a874ec6e09d151aeb1fa8600e14f1ff89f6 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Tue, 15 Apr 2014 20:08:01 +0200 Subject: [PATCH 134/623] s390/chsc: fix SEI usage on old FW levels Using a notification type mask for the store event information chsc is unsupported on some firmware levels. Retry SEI with that mask set to zero (which is the old way of requesting only channel subsystem related events). Cc: Reported-and-tested-by: Stefan Haberland Reviewed-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/chsc.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 9f0ea6cb6922..e3bf885f4a6c 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -541,18 +541,27 @@ static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area) static void chsc_process_event_information(struct chsc_sei *sei, u64 ntsm) { - do { + static int ntsm_unsupported; + + while (true) { memset(sei, 0, sizeof(*sei)); sei->request.length = 0x0010; sei->request.code = 0x000e; - sei->ntsm = ntsm; + if (!ntsm_unsupported) + sei->ntsm = ntsm; if (chsc(sei)) break; if (sei->response.code != 0x0001) { - CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x)\n", - sei->response.code); + CIO_CRW_EVENT(2, "chsc: sei failed (rc=%04x, ntsm=%llx)\n", + sei->response.code, sei->ntsm); + + if (sei->response.code == 3 && sei->ntsm) { + /* Fallback for old firmware. */ + ntsm_unsupported = 1; + continue; + } break; } @@ -568,7 +577,10 @@ static void chsc_process_event_information(struct chsc_sei *sei, u64 ntsm) CIO_CRW_EVENT(2, "chsc: unhandled nt: %d\n", sei->nt); break; } - } while (sei->u.nt0_area.flags & 0x80); + + if (!(sei->u.nt0_area.flags & 0x80)) + break; + } } /* From ab0f9e78b97f5193dd38b3757b42b6fbded05fb7 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Thu, 17 Apr 2014 14:13:49 +0200 Subject: [PATCH 135/623] ahci: Ensure "MSI Revert to Single Message" mode is not enforced The AHCI specification allows hardware to choose to revert to single MSI mode when fewer messages are allocated than requested. Yet, at least ICH10 chipset reverts to single MSI mode even when enough messages are allocated in some cases (see below). This update forces the driver to not rely on initialization of multiple MSIs mode alone and always check if "MSI Revert to Single Message" (MRSM) mode was enforced by the controller and fallback to the single MSI mode in case it did. That prevents a situation when the driver configured multiple per-port IRQ handlers, but the controller sends all port's interrupts to a single IRQ, which could easily screw up the interrupt handling and lead to delays and possibly crashes. The fix was tested on a 6-port controller that successfully reverted to the single MSI mode: 00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller (prog-if 01 [AHCI 1.0]) Subsystem: Super Micro Computer Inc Device 10a7 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 101 I/O ports at f110 [size=8] I/O ports at f100 [size=4] I/O ports at f0f0 [size=8] I/O ports at f0e0 [size=4] I/O ports at f020 [size=32] Memory at fbf00000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/16 Maskable- 64bit- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA v1.0 Capabilities: [b0] PCI Advanced Features Kernel driver in use: ahci With 6 ports just 8 MSI vectors should be enough, but the adapter enforces the MRSM mode when less than 16 vectors are written to the Multiple Messages Enable PCI register. I instigated MRSM mode by forcing @nvec to 8 in ahci_init_interrupts(). Signed-off-by: Alexander Gordeev Cc: linux-ide@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Tejun Heo --- drivers/ata/ahci.c | 9 ++++++++- drivers/ata/ahci.h | 1 + 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index e45b18ee04c3..f6b3e31f63cd 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1164,7 +1164,7 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host) #endif static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports, - struct ahci_host_priv *hpriv) + struct ahci_host_priv *hpriv) { int nvec; @@ -1189,6 +1189,13 @@ static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports, else if (nvec < 0) goto intx; + /* fallback to single MSI mode if the controller enforced MRSM mode */ + if (readl(hpriv->mmio + HOST_CTL) & HOST_MRSM) { + pci_disable_msi(pdev); + printk(KERN_INFO "ahci: MRSM is on, fallback to single MSI\n"); + goto single_msi; + } + return nvec; single_msi: diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 51af275b3388..b5eb886da226 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -94,6 +94,7 @@ enum { /* HOST_CTL bits */ HOST_RESET = (1 << 0), /* reset controller; self-clear */ HOST_IRQ_EN = (1 << 1), /* global IRQ enable */ + HOST_MRSM = (1 << 2), /* MSI Revert to Single Message */ HOST_AHCI_EN = (1 << 31), /* AHCI enabled */ /* HOST_CAP bits */ From ccf8f53cac7d9321c9af2b14af41e703f44ac198 Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Thu, 17 Apr 2014 14:13:50 +0200 Subject: [PATCH 136/623] ahci: Use pci_enable_msi_exact() instead of pci_enable_msi_range() The driver calls pci_enable_msi_range() function with the range of [nvec..nvec] which is what pci_enable_msi_exact() function is for. Signed-off-by: Alexander Gordeev Cc: linux-ide@vger.kernel.org Signed-off-by: Tejun Heo --- drivers/ata/ahci.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index f6b3e31f63cd..44d40c746982 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1166,7 +1166,7 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host) static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports, struct ahci_host_priv *hpriv) { - int nvec; + int rc, nvec; if (hpriv->flags & AHCI_HFLAG_NO_MSI) goto intx; @@ -1183,10 +1183,10 @@ static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports, if (nvec < n_ports) goto single_msi; - nvec = pci_enable_msi_range(pdev, nvec, nvec); - if (nvec == -ENOSPC) + rc = pci_enable_msi_exact(pdev, nvec); + if (rc == -ENOSPC) goto single_msi; - else if (nvec < 0) + else if (rc < 0) goto intx; /* fallback to single MSI mode if the controller enforced MRSM mode */ From 252455c40316009cc791f00338ee2e367d2d2739 Mon Sep 17 00:00:00 2001 From: Suresh Gupta Date: Fri, 21 Mar 2014 16:38:12 +0530 Subject: [PATCH 137/623] usb: gadget: fsl driver pullup fix This fix the fsl usb gadget driver in a way that the usb device will be only "pulled up" on requests only when vbus is powered Signed-off-by: Suresh Gupta Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fsl_udc_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index dcd0b07ae3a0..a2f26cdb56fe 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1219,6 +1219,10 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); + + if (!udc->vbus_active) + return -EOPNOTSUPP; + udc->softconnect = (is_on != 0); if (can_pullup(udc)) fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), From 01f8fa4f01d8362358eb90e412bd7ae18a3ec1ad Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Apr 2014 14:36:44 +0000 Subject: [PATCH 138/623] genirq: Allow forcing cpu affinity of interrupts The current implementation of irq_set_affinity() refuses rightfully to route an interrupt to an offline cpu. But there is a special case, where this is actually desired. Some of the ARM SoCs have per cpu timers which require setting the affinity during cpu startup where the cpu is not yet in the online mask. If we can't do that, then the local timer interrupt for the about to become online cpu is routed to some random online cpu. The developers of the affected machines tried to work around that issue, but that results in a massive mess in that timer code. We have a yet unused argument in the set_affinity callbacks of the irq chips, which I added back then for a similar reason. It was never required so it got not used. But I'm happy that I never removed it. That allows us to implement a sane handling of the above scenario. So the affected SoC drivers can add the required force handling to their interrupt chip, switch the timer code to irq_force_affinity() and things just work. This does not affect any existing user of irq_set_affinity(). Tagged for stable to allow a simple fix of the affected SoC clock event drivers. Reported-and-tested-by: Krzysztof Kozlowski Signed-off-by: Thomas Gleixner Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Bartlomiej Zolnierkiewicz Cc: Tomasz Figa , Cc: Daniel Lezcano , Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20140416143315.717251504@linutronix.de Signed-off-by: Thomas Gleixner --- arch/mips/cavium-octeon/octeon-irq.c | 2 +- include/linux/interrupt.h | 35 +++++++++++++++++++++++++++- include/linux/irq.h | 3 ++- kernel/irq/manage.c | 17 +++++--------- 4 files changed, 43 insertions(+), 14 deletions(-) diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c index c2bb4f896ce7..3aa5b46b2d40 100644 --- a/arch/mips/cavium-octeon/octeon-irq.c +++ b/arch/mips/cavium-octeon/octeon-irq.c @@ -635,7 +635,7 @@ static void octeon_irq_cpu_offline_ciu(struct irq_data *data) cpumask_clear(&new_affinity); cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity); } - __irq_set_affinity_locked(data, &new_affinity); + irq_set_affinity_locked(data, &new_affinity, false); } static int octeon_irq_ciu_set_affinity(struct irq_data *data, diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index c7bfac1c4a7b..8834a7e5b944 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -203,7 +203,40 @@ static inline int check_wakeup_irqs(void) { return 0; } extern cpumask_var_t irq_default_affinity; -extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask); +/* Internal implementation. Use the helpers below */ +extern int __irq_set_affinity(unsigned int irq, const struct cpumask *cpumask, + bool force); + +/** + * irq_set_affinity - Set the irq affinity of a given irq + * @irq: Interrupt to set affinity + * @mask: cpumask + * + * Fails if cpumask does not contain an online CPU + */ +static inline int +irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) +{ + return __irq_set_affinity(irq, cpumask, false); +} + +/** + * irq_force_affinity - Force the irq affinity of a given irq + * @irq: Interrupt to set affinity + * @mask: cpumask + * + * Same as irq_set_affinity, but without checking the mask against + * online cpus. + * + * Solely for low level cpu hotplug code, where we need to make per + * cpu interrupts affine before the cpu becomes online. + */ +static inline int +irq_force_affinity(unsigned int irq, const struct cpumask *cpumask) +{ + return __irq_set_affinity(irq, cpumask, true); +} + extern int irq_can_set_affinity(unsigned int irq); extern int irq_select_affinity(unsigned int irq); diff --git a/include/linux/irq.h b/include/linux/irq.h index d278838908cb..10a0b1ac4ea0 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -394,7 +394,8 @@ extern void remove_percpu_irq(unsigned int irq, struct irqaction *act); extern void irq_cpu_online(void); extern void irq_cpu_offline(void); -extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask); +extern int irq_set_affinity_locked(struct irq_data *data, + const struct cpumask *cpumask, bool force); #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ) void irq_move_irq(struct irq_data *data); diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 2486a4c1a710..d34131ca372b 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -180,7 +180,7 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, struct irq_chip *chip = irq_data_get_irq_chip(data); int ret; - ret = chip->irq_set_affinity(data, mask, false); + ret = chip->irq_set_affinity(data, mask, force); switch (ret) { case IRQ_SET_MASK_OK: cpumask_copy(data->affinity, mask); @@ -192,7 +192,8 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, return ret; } -int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask) +int irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask, + bool force) { struct irq_chip *chip = irq_data_get_irq_chip(data); struct irq_desc *desc = irq_data_to_desc(data); @@ -202,7 +203,7 @@ int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask) return -EINVAL; if (irq_can_move_pcntxt(data)) { - ret = irq_do_set_affinity(data, mask, false); + ret = irq_do_set_affinity(data, mask, force); } else { irqd_set_move_pending(data); irq_copy_pending(desc, mask); @@ -217,13 +218,7 @@ int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask) return ret; } -/** - * irq_set_affinity - Set the irq affinity of a given irq - * @irq: Interrupt to set affinity - * @mask: cpumask - * - */ -int irq_set_affinity(unsigned int irq, const struct cpumask *mask) +int __irq_set_affinity(unsigned int irq, const struct cpumask *mask, bool force) { struct irq_desc *desc = irq_to_desc(irq); unsigned long flags; @@ -233,7 +228,7 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask) return -EINVAL; raw_spin_lock_irqsave(&desc->lock, flags); - ret = __irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask); + ret = irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask, force); raw_spin_unlock_irqrestore(&desc->lock, flags); return ret; } From ffde1de64012c406dfdda8690918248b472f24e4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Apr 2014 14:36:44 +0000 Subject: [PATCH 139/623] irqchip: Gic: Support forced affinity setting To support the affinity setting of per cpu timers in the early startup of a not yet online cpu, implement the force logic, which disables the cpu online check. Tagged for stable to allow a simple fix of the affected SoC clock event drivers. Signed-off-by: Thomas Gleixner Tested-by: Krzysztof Kozlowski Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Bartlomiej Zolnierkiewicz Cc: Tomasz Figa , Cc: Daniel Lezcano , Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20140416143315.916984416@linutronix.de Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-gic.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 4300b6606f5e..57d165e026f4 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -246,10 +246,14 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bool force) { void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3); - unsigned int shift = (gic_irq(d) % 4) * 8; - unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask); + unsigned int cpu, shift = (gic_irq(d) % 4) * 8; u32 val, mask, bit; + if (!force) + cpu = cpumask_any_and(mask_val, cpu_online_mask); + else + cpu = cpumask_first(mask_val); + if (cpu >= NR_GIC_CPU_IF || cpu >= nr_cpu_ids) return -EINVAL; From 30ccf03b4a6a2102a2219058bdc6d779dc637dd7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Apr 2014 14:36:45 +0000 Subject: [PATCH 140/623] clocksource: Exynos_mct: Use irq_force_affinity() in cpu bringup The starting cpu is not yet in the online mask so irq_set_affinity() fails which results in per cpu timers for this cpu ending up on some other online cpu, ususally cpu 0. Use irq_force_affinity() which disables the online mask check and makes things work. Signed-off-by: Thomas Gleixner Tested-by: Krzysztof Kozlowski Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Bartlomiej Zolnierkiewicz Cc: Tomasz Figa , Cc: Daniel Lezcano , Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20140416143316.106665251@linutronix.de Signed-off-by: Thomas Gleixner --- drivers/clocksource/exynos_mct.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index a6ee6d7cd63f..b2d416368711 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -430,6 +430,7 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt) evt->irq); return -EIO; } + irq_force_affinity(mct_irqs[MCT_L0_IRQ + cpu], cpumask_of(cpu)); } else { enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0); } @@ -450,7 +451,6 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { struct mct_clock_event_device *mevt; - unsigned int cpu; /* * Grab cpu pointer in each case to avoid spurious @@ -461,12 +461,6 @@ static int exynos4_mct_cpu_notify(struct notifier_block *self, mevt = this_cpu_ptr(&percpu_mct_tick); exynos4_local_timer_setup(&mevt->evt); break; - case CPU_ONLINE: - cpu = (unsigned long)hcpu; - if (mct_int_type == MCT_INT_SPI) - irq_set_affinity(mct_irqs[MCT_L0_IRQ + cpu], - cpumask_of(cpu)); - break; case CPU_DYING: mevt = this_cpu_ptr(&percpu_mct_tick); exynos4_local_timer_stop(&mevt->evt); From 8db6e5104b77de5d0b7002b95069da0992a34be9 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 16 Apr 2014 14:36:45 +0000 Subject: [PATCH 141/623] clocksource: Exynos_mct: Register clock event after request_irq() After hotplugging CPU1 the first call of interrupt handler for CPU1 oneshot timer was called on CPU0 because it fired before setting IRQ affinity. Affected are SoCs where Multi Core Timer interrupts are shared (SPI), e.g. Exynos 4210. During setup of the MCT timers the clock event device should be registered after setting the affinity for interrupt. This will prevent starting the timer too early. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Thomas Gleixner Cc: Kyungmin Park Cc: Marek Szyprowski Cc: Bartlomiej Zolnierkiewicz Cc: Tomasz Figa , Cc: Daniel Lezcano , Cc: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20140416143316.299247848@linutronix.de Signed-off-by: Thomas Gleixner --- drivers/clocksource/exynos_mct.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c index b2d416368711..acf5a329d538 100644 --- a/drivers/clocksource/exynos_mct.c +++ b/drivers/clocksource/exynos_mct.c @@ -416,8 +416,6 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt) evt->set_mode = exynos4_tick_set_mode; evt->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; evt->rating = 450; - clockevents_config_and_register(evt, clk_rate / (TICK_BASE_CNT + 1), - 0xf, 0x7fffffff); exynos4_mct_write(TICK_BASE_CNT, mevt->base + MCT_L_TCNTB_OFFSET); @@ -434,6 +432,8 @@ static int exynos4_local_timer_setup(struct clock_event_device *evt) } else { enable_percpu_irq(mct_irqs[MCT_L0_IRQ], 0); } + clockevents_config_and_register(evt, clk_rate / (TICK_BASE_CNT + 1), + 0xf, 0x7fffffff); return 0; } From 4991a628a789dc5954e98e79476d9808812292ec Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 15 Apr 2014 08:44:12 -0400 Subject: [PATCH 142/623] locks: allow __break_lease to sleep even when break_time is 0 A fl->fl_break_time of 0 has a special meaning to the lease break code that basically means "never break the lease". knfsd uses this to ensure that leases don't disappear out from under it. Unfortunately, the code in __break_lease can end up passing this value to wait_event_interruptible as a timeout, which prevents it from going to sleep at all. This causes __break_lease to spin in a tight loop and causes soft lockups. Fix this by ensuring that we pass a minimum value of 1 as a timeout instead. Cc: Cc: J. Bruce Fields Reported-by: Terry Barnaby Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/locks.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 13fc7a6d380a..b380f5543614 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1391,11 +1391,10 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) restart: break_time = flock->fl_break_time; - if (break_time != 0) { + if (break_time != 0) break_time -= jiffies; - if (break_time == 0) - break_time++; - } + if (break_time == 0) + break_time++; locks_insert_block(flock, new_fl); spin_unlock(&inode->i_lock); error = wait_event_interruptible_timeout(new_fl->fl_wait, From 3758cf7e14b753838fe754ede3862af10b35fdac Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 15 Apr 2014 08:51:48 -0400 Subject: [PATCH 143/623] nfsd: set timeparms.to_maxval in setup_callback_client ...otherwise the logic in the timeout handling doesn't work correctly. Spotted-by: Trond Myklebust Cc: stable@vger.kernel.org Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4callback.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index 39c8ef875f91..2c73cae9899d 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -654,9 +654,11 @@ static struct rpc_clnt *create_backchannel_client(struct rpc_create_args *args) static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *conn, struct nfsd4_session *ses) { + int maxtime = max_cb_time(clp->net); struct rpc_timeout timeparms = { - .to_initval = max_cb_time(clp->net), + .to_initval = maxtime, .to_retries = 0, + .to_maxval = maxtime, }; struct rpc_create_args args = { .net = clp->net, From fc208d026be0c7d60db9118583fc62f6ca97743d Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 9 Apr 2014 11:07:01 -0400 Subject: [PATCH 144/623] Revert "nfsd4: fix nfs4err_resource in 4.1 case" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we're still limiting attributes to a page, the result here is that a large getattr result will return NFS4ERR_REP_TOO_BIG/TOO_BIG_TO_CACHE instead of NFS4ERR_RESOURCE. Both error returns are wrong, and the real bug here is the arbitrary limit on getattr results, fixed by as-yet out-of-tree patches. But at a minimum we can make life easier for clients by sticking to one broken behavior in released kernels instead of two.... Trond says: one immediate consequence of this patch will be that NFSv4.1 clients will now report EIO instead of EREMOTEIO if they hit the problem. That may make debugging a little less obvious. Another consequence will be that if we ever do try to add client side handling of NFS4ERR_REP_TOO_BIG, then we now have to deal with the “handle existing buggy server” syndrome. Reported-by: Trond Myklebust Signed-off-by: J. Bruce Fields --- fs/nfsd/nfs4xdr.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 2723c1badd01..18881f34737a 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3627,14 +3627,6 @@ nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) /* nfsd4_check_resp_size guarantees enough room for error status */ if (!op->status) op->status = nfsd4_check_resp_size(resp, 0); - if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { - struct nfsd4_slot *slot = resp->cstate.slot; - - if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) - op->status = nfserr_rep_too_big_to_cache; - else - op->status = nfserr_rep_too_big; - } if (so) { so->so_replay.rp_status = op->status; so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); From 6ae6698276ca36f37afc2ad38054092021519ad4 Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Fri, 18 Apr 2014 17:32:08 +0800 Subject: [PATCH 145/623] ASoC: fsl_spdif: Fix wrong OFFSET of STC_SYSCLK_DIV It should use STC_SYSCLK_DIV_OFFSET. Thus fix it. Signed-off-by: Nicolin Chen Signed-off-by: Mark Brown --- sound/soc/fsl/fsl_spdif.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h index b1266790d117..605a10b2112b 100644 --- a/sound/soc/fsl/fsl_spdif.h +++ b/sound/soc/fsl/fsl_spdif.h @@ -144,8 +144,8 @@ enum spdif_gainsel { /* SPDIF Clock register */ #define STC_SYSCLK_DIV_OFFSET 11 -#define STC_SYSCLK_DIV_MASK (0x1ff << STC_TXCLK_SRC_OFFSET) -#define STC_SYSCLK_DIV(x) ((((x) - 1) << STC_TXCLK_DIV_OFFSET) & STC_SYSCLK_DIV_MASK) +#define STC_SYSCLK_DIV_MASK (0x1ff << STC_SYSCLK_DIV_OFFSET) +#define STC_SYSCLK_DIV(x) ((((x) - 1) << STC_SYSCLK_DIV_OFFSET) & STC_SYSCLK_DIV_MASK) #define STC_TXCLK_SRC_OFFSET 8 #define STC_TXCLK_SRC_MASK (0x7 << STC_TXCLK_SRC_OFFSET) #define STC_TXCLK_SRC_SET(x) ((x << STC_TXCLK_SRC_OFFSET) & STC_TXCLK_SRC_MASK) From eb4dd20c2ac9ad394401694d8762e0a13bc469ef Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Fri, 18 Apr 2014 02:06:30 +0200 Subject: [PATCH 146/623] ASoC: tlv320aic31xx: document that the regulators are mandatory The driver will not probe if regulators are not provided. Move the regulator properties to the required section. Signed-off-by: Alexandre Belloni Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/tlv320aic31xx.txt | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt b/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt index 74c66dee3e14..eff12be5e789 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic31xx.txt @@ -13,6 +13,9 @@ Required properties: "ti,tlv320aic3111" - TLV320AIC3111 (stereo speaker amp, MiniDSP) - reg - - I2C slave address +- HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply, + DVDD-supply : power supplies for the device as covered in + Documentation/devicetree/bindings/regulator/regulator.txt Optional properties: @@ -24,9 +27,6 @@ Optional properties: 3 or MICBIAS_AVDD - MICBIAS output is connected to AVDD If this node is not mentioned or if the value is unknown, then micbias is set to 2.0V. -- HPVDD-supply, SPRVDD-supply, SPLVDD-supply, AVDD-supply, IOVDD-supply, - DVDD-supply : power supplies for the device as covered in - Documentation/devicetree/bindings/regulator/regulator.txt CODEC output pins: * HPL From df7926fffa9a4c0bceb0189386b4c5edc012fcbb Mon Sep 17 00:00:00 2001 From: Tim Kryger Date: Thu, 17 Apr 2014 11:55:24 -0700 Subject: [PATCH 147/623] regulator: core: Return error in get optional stub Drivers that call regulator_get_optional are tolerant to the absence of that regulator. By modifying the value returned from the stub function to match that seen when a regulator isn't present, callers can wrap the regulator logic with an IS_ERR based conditional even if they happen to call regulator_is_supported_voltage. This improves efficiency as well as eliminates the possibility for a very subtle bug. Signed-off-by: Tim Kryger Reviewed-by: Alex Elder Signed-off-by: Mark Brown --- include/linux/regulator/consumer.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index e530681bea70..1a4a8c157b31 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -258,14 +258,14 @@ regulator_get_exclusive(struct device *dev, const char *id) static inline struct regulator *__must_check regulator_get_optional(struct device *dev, const char *id) { - return NULL; + return ERR_PTR(-ENODEV); } static inline struct regulator *__must_check devm_regulator_get_optional(struct device *dev, const char *id) { - return NULL; + return ERR_PTR(-ENODEV); } static inline void regulator_put(struct regulator *regulator) From 4e17d2d33abe4b523f79fec037ef66ba93643f65 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 8 Apr 2014 22:10:33 +0800 Subject: [PATCH 148/623] ASoC: cs42l52: Convert to use devm_gpio_request_one Current code missed a gpio_free() call in cs42l52_i2c_remove(). Convert to use devm_gpio_request_one() to fix it. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- sound/soc/codecs/cs42l52.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c index 460d35547a68..2213a037c893 100644 --- a/sound/soc/codecs/cs42l52.c +++ b/sound/soc/codecs/cs42l52.c @@ -1229,8 +1229,10 @@ static int cs42l52_i2c_probe(struct i2c_client *i2c_client, } if (cs42l52->pdata.reset_gpio) { - ret = gpio_request_one(cs42l52->pdata.reset_gpio, - GPIOF_OUT_INIT_HIGH, "CS42L52 /RST"); + ret = devm_gpio_request_one(&i2c_client->dev, + cs42l52->pdata.reset_gpio, + GPIOF_OUT_INIT_HIGH, + "CS42L52 /RST"); if (ret < 0) { dev_err(&i2c_client->dev, "Failed to request /RST %d: %d\n", cs42l52->pdata.reset_gpio, ret); From 2b21694f153a0df88dca7fb4ce04614ea7ff9dc2 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 8 Apr 2014 22:11:40 +0800 Subject: [PATCH 149/623] ASoC: cs42l73: Convert to use devm_gpio_request_one Current code missed a gpio_free() call in cs42l73_i2c_remove(). Convert to use devm_gpio_request_one() to fix it. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- sound/soc/codecs/cs42l73.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/cs42l73.c b/sound/soc/codecs/cs42l73.c index 0ee60a19a263..ae3717992d56 100644 --- a/sound/soc/codecs/cs42l73.c +++ b/sound/soc/codecs/cs42l73.c @@ -1443,8 +1443,10 @@ static int cs42l73_i2c_probe(struct i2c_client *i2c_client, i2c_set_clientdata(i2c_client, cs42l73); if (cs42l73->pdata.reset_gpio) { - ret = gpio_request_one(cs42l73->pdata.reset_gpio, - GPIOF_OUT_INIT_HIGH, "CS42L73 /RST"); + ret = devm_gpio_request_one(&i2c_client->dev, + cs42l73->pdata.reset_gpio, + GPIOF_OUT_INIT_HIGH, + "CS42L73 /RST"); if (ret < 0) { dev_err(&i2c_client->dev, "Failed to request /RST %d: %d\n", cs42l73->pdata.reset_gpio, ret); From 694c793fc1ade0946149c5f8d43f71e0728c4e81 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:21:15 -0400 Subject: [PATCH 150/623] ext4: use truncate_pagecache() in collapse range We should be using truncate_pagecache() instead of truncate_pagecache_range() in the collapse range because we're truncating page cache from offset to the end of file. truncate_pagecache() also get rid of the private COWed pages from the range because we're going to shift the end of the file. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 64b400356cad..3de9b2d7028c 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5437,7 +5437,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) goto out_mutex; } - truncate_pagecache_range(inode, offset, -1); + truncate_pagecache(inode, offset); /* Wait for existing dio to complete */ ext4_inode_block_unlocked_dio(inode); From 1676014ef974ce71a854e7f415e2bb52feb24868 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Sun, 13 Apr 2014 12:45:10 +0200 Subject: [PATCH 151/623] spi: atmel: Fix scheduling while atomic bug atmel_spi_lock does a spin_lock_irqsave, so we need to renable the interrupts when we want to schedule. Signed-off-by: Alexander Stein Signed-off-by: Mark Brown --- drivers/spi/spi-atmel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c index 8005f9869481..079e6b1b0cdb 100644 --- a/drivers/spi/spi-atmel.c +++ b/drivers/spi/spi-atmel.c @@ -1115,8 +1115,11 @@ static int atmel_spi_one_transfer(struct spi_master *master, atmel_spi_next_xfer_pio(master, xfer); } + /* interrupts are disabled, so free the lock for schedule */ + atmel_spi_unlock(as); ret = wait_for_completion_timeout(&as->xfer_completion, SPI_DMA_TIMEOUT); + atmel_spi_lock(as); if (WARN_ON(ret == 0)) { dev_err(&spi->dev, "spi trasfer timeout, err %d\n", ret); From 1a66c7c3bea52ba0f7596b8940d74fce75281d16 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:41:52 -0400 Subject: [PATCH 152/623] ext4: use filemap_write_and_wait_range() correctly in collapse range Currently we're passing -1 as lend argumnet for filemap_write_and_wait_range() which is wrong since lend is signed type so it would cause some confusion and we might not write_and_wait for the entire range we're expecting to write. Fix it by using LLONG_MAX instead. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3de9b2d7028c..f4a676908b0b 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5415,7 +5415,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) } /* Write out all dirty pages */ - ret = filemap_write_and_wait_range(inode->i_mapping, offset, -1); + ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); if (ret) return ret; From 2c1d23289bc2f7cfa358bc856b87a992dcb11ad5 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:43:21 -0400 Subject: [PATCH 153/623] ext4: fix removing status extents in ext4_collapse_range() Currently in ext4_collapse_range() when calling ext4_es_remove_extent() to remove status extents we're passing (EXT_MAX_BLOCKS - punch_start - 1) in order to remove all extents from start of the collapse range to the end of the file. However this is wrong because we might miss the possible extent covering the last block of the file. Fix it by removing the -1. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" Reviewed-by: Namjae Jeon --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index f4a676908b0b..c6f624582d37 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5454,7 +5454,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) ext4_discard_preallocations(inode); ret = ext4_es_remove_extent(inode, punch_start, - EXT_MAX_BLOCKS - punch_start - 1); + EXT_MAX_BLOCKS - punch_start); if (ret) { up_write(&EXT4_I(inode)->i_data_sem); goto out_stop; From 9337d5d31ab798f0c74150506371551a9195251a Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:48:25 -0400 Subject: [PATCH 154/623] ext4: no need to truncate pagecache twice in collapse range We're already calling truncate_pagecache() before we attempt to do any actual job so there is not need to truncate pagecache once more using truncate_setsize() after we're finished. Remove truncate_setsize() and replace it just with i_size_write() note that we're holding appropriate locks. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index c6f624582d37..3ee60e2e2ac7 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5474,7 +5474,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) } new_size = i_size_read(inode) - len; - truncate_setsize(inode, new_size); + i_size_write(inode, new_size); EXT4_I(inode)->i_disksize = new_size; ext4_discard_preallocations(inode); From ef24f6c234de9a03aed9368163dbaad9a4f6391f Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:50:23 -0400 Subject: [PATCH 155/623] ext4: discard preallocations after removing space Currently in ext4_collapse_range() and ext4_punch_hole() we're discarding preallocation twice. Once before we attempt to do any changes and second time after we're done with the changes. While the second call to ext4_discard_preallocations() in ext4_punch_hole() case is not needed, we need to discard preallocation right after ext4_ext_remove_space() in collapse range case because in the case we had to restart a transaction in the middle of removing space we might have new preallocations created. Remove unneeded ext4_discard_preallocations() ext4_punch_hole() and move it to the better place in ext4_collapse_range() Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 +- fs/ext4/inode.c | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 3ee60e2e2ac7..eb7be8f08e10 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5465,6 +5465,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) up_write(&EXT4_I(inode)->i_data_sem); goto out_stop; } + ext4_discard_preallocations(inode); ret = ext4_ext_shift_extents(inode, handle, punch_stop, punch_stop - punch_start); @@ -5477,7 +5478,6 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) i_size_write(inode, new_size); EXT4_I(inode)->i_disksize = new_size; - ext4_discard_preallocations(inode); up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index b74cfd2a42ec..d7b7462a0e13 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3621,7 +3621,6 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length) ret = ext4_free_hole_blocks(handle, inode, first_block, stop_block); - ext4_discard_preallocations(inode); up_write(&EXT4_I(inode)->i_data_sem); if (IS_SYNC(inode)) ext4_handle_sync(handle); From 6dd834effc12ba71092d9d1e4944530234b58ab1 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Fri, 18 Apr 2014 10:55:24 -0400 Subject: [PATCH 156/623] ext4: fix extent merging in ext4_ext_shift_path_extents() There is a bug in ext4_ext_shift_path_extents() where if we actually manage to merge a extent we would skip shifting the next extent. This will result in in one extent in the extent tree not being properly shifted. This is causing failure in various xfstests tests using fsx or fsstress with collapse range support. It will also cause file system corruption which looks something like: e2fsck 1.42.9 (4-Feb-2014) Pass 1: Checking inodes, blocks, and sizes Inode 20 has out of order extents (invalid logical block 3, physical block 492938, len 2) Clear? yes ... when running e2fsck. It's also very easily reproducible just by running fsx without any parameters. I can usually hit the problem within a minute. Fix it by increasing ex_start only if we're not merging the extent. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" Reviewed-by: Namjae Jeon --- fs/ext4/extents.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index eb7be8f08e10..d0860f2d36d0 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5245,13 +5245,14 @@ ext4_ext_shift_path_extents(struct ext4_ext_path *path, ext4_lblk_t shift, while (ex_start <= ex_last) { le32_add_cpu(&ex_start->ee_block, -shift); - if (ex_start > - EXT_FIRST_EXTENT(path[depth].p_hdr)) { - if (ext4_ext_try_to_merge_right(inode, - path, ex_start - 1)) - ex_last--; - } - ex_start++; + /* Try to merge to the left. */ + if ((ex_start > + EXT_FIRST_EXTENT(path[depth].p_hdr)) && + ext4_ext_try_to_merge_right(inode, + path, ex_start - 1)) + ex_last--; + else + ex_start++; } err = ext4_ext_dirty(handle, inode, path + depth); if (err) From 6c5e73d3a26b73bfcac0b4a932cb918177d067f2 Mon Sep 17 00:00:00 2001 From: jon ernst Date: Fri, 18 Apr 2014 11:50:35 -0400 Subject: [PATCH 157/623] ext4: enforce we are operating on a regular file in ext4_zero_range() Signed-off-by: Jon Ernst Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index d0860f2d36d0..2f49b12a4c40 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4741,6 +4741,9 @@ static long ext4_zero_range(struct file *file, loff_t offset, trace_ext4_zero_range(inode, offset, len, mode); + if (!S_ISREG(inode->i_mode)) + return -EINVAL; + /* * Write out all dirty pages to avoid race conditions * Then release them. From 86f1ca3889142d5959362c5694db3f3dc26f377a Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Fri, 18 Apr 2014 11:52:11 -0400 Subject: [PATCH 158/623] ext4: use EINVAL if not a regular file in ext4_collapse_range() Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 2f49b12a4c40..9b9251adb400 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5404,7 +5404,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) return -EINVAL; if (!S_ISREG(inode->i_mode)) - return -EOPNOTSUPP; + return -EINVAL; trace_ext4_collapse_range(inode, offset, len); From 7897ab78f64008a81344af9fecec6527dbab7a31 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 16 Apr 2014 18:38:11 +0300 Subject: [PATCH 159/623] ASoC: Intel: some incorrect sizeof() usages The intent was to say "sizeof(*pos)" and not "sizeof(pos)". The sizeof(*pos) is 8 bytes so the bug won't show up on 64 bit systems. The sizeof(*dx) is 172 bytes so that will be a bugfix. Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown --- sound/soc/intel/sst-haswell-ipc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c index f46bb4ddde6f..4ed2d1706a83 100644 --- a/sound/soc/intel/sst-haswell-ipc.c +++ b/sound/soc/intel/sst-haswell-ipc.c @@ -617,7 +617,7 @@ static void hsw_notification_work(struct work_struct *work) case IPC_POSITION_CHANGED: trace_ipc_notification("DSP stream position changed for", stream->reply.stream_hw_id); - sst_dsp_inbox_read(hsw->dsp, pos, sizeof(pos)); + sst_dsp_inbox_read(hsw->dsp, pos, sizeof(*pos)); if (stream->notify_position) stream->notify_position(stream, stream->pdata); @@ -1609,7 +1609,7 @@ int sst_hsw_dx_set_state(struct sst_hsw *hsw, trace_ipc_request("PM enter Dx state", state); ret = ipc_tx_message_wait(hsw, header, &state_, sizeof(state_), - dx, sizeof(dx)); + dx, sizeof(*dx)); if (ret < 0) { dev_err(hsw->dev, "ipc: error set dx state %d failed\n", state); return ret; From bf657d2479d179a03668cd7ab8aec96415592f02 Mon Sep 17 00:00:00 2001 From: Christian Engelmayer Date: Sun, 13 Apr 2014 19:56:36 +0200 Subject: [PATCH 160/623] ASoC: Intel: Fix incorrect sizeof() in sst_hsw_stream_get_volume() Fix an incorrect sizeof() usage in sst_hsw_stream_get_volume(). sst_dsp_read() is called to read into a variable of type u32, but is passed sizeof(u32 *) for argument 'size_t bytes'. Detected by Coverity: CID 1195260. Signed-off-by: Christian Engelmayer Signed-off-by: Mark Brown --- sound/soc/intel/sst-haswell-ipc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c index 4ed2d1706a83..50e4246d4b57 100644 --- a/sound/soc/intel/sst-haswell-ipc.c +++ b/sound/soc/intel/sst-haswell-ipc.c @@ -991,7 +991,8 @@ int sst_hsw_stream_get_volume(struct sst_hsw *hsw, struct sst_hsw_stream *stream return -EINVAL; sst_dsp_read(hsw->dsp, volume, - stream->reply.volume_register_address[channel], sizeof(volume)); + stream->reply.volume_register_address[channel], + sizeof(*volume)); return 0; } From 2cf532f5e67c0cfe38c8c100e49280cdadacd2be Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Thu, 17 Apr 2014 18:06:15 +0200 Subject: [PATCH 161/623] ahci: Do not receive interrupts sent by dummy ports In multiple MSI mode all AHCI ports (including dummy) get assigned separate MSI vectors and (as result of execution pci_enable_msi_exact() function) separate IRQ numbers, (mapped to the MSI vectors). Therefore, although interrupts from dummy ports are not desired they are still enabled. We do not request IRQs for dummy ports, but that only means we do not assign AHCI-specific ISRs to corresponding IRQ numbers. As result, dummy port interrupts still could come and traverse all the way from the PCI device to the kernel, causing unnecessary overhead. This update disables IRQs for dummy ports and prevents the described issue. Signed-off-by: Alexander Gordeev Signed-off-by: Tejun Heo Tested-by: David Milburn Cc: linux-ide@vger.kernel.org Cc: stable@vger.kernel.org Fixes: 5ca72c4f7c41 ("AHCI: Support multiple MSIs") --- drivers/ata/ahci.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 44d40c746982..71e15b73513d 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1241,12 +1241,16 @@ int ahci_host_activate(struct ata_host *host, int irq, unsigned int n_msis) for (i = 0; i < host->n_ports; i++) { struct ahci_port_priv *pp = host->ports[i]->private_data; - /* pp is NULL for dummy ports */ - if (pp) - rc = devm_request_threaded_irq(host->dev, - irq + i, ahci_hw_interrupt, - ahci_thread_fn, IRQF_SHARED, - pp->irq_desc, host->ports[i]); + /* Do not receive interrupts sent by dummy ports */ + if (!pp) { + disable_irq(irq + i); + continue; + } + + rc = devm_request_threaded_irq(host->dev, irq + i, + ahci_hw_interrupt, + ahci_thread_fn, IRQF_SHARED, + pp->irq_desc, host->ports[i]); if (rc) goto out_free_irqs; } From 8a4aeec8d2d6a3edeffbdfae451cdf05cbf0fefd Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 17 Apr 2014 11:48:21 -0700 Subject: [PATCH 162/623] libata/ahci: accommodate tag ordered controllers The AHCI spec allows implementations to issue commands in tag order rather than FIFO order: 5.3.2.12 P:SelectCmd HBA sets pSlotLoc = (pSlotLoc + 1) mod (CAP.NCS + 1) or HBA selects the command to issue that has had the PxCI bit set to '1' longer than any other command pending to be issued. The result is that commands posted sequentially (time-wise) may play out of sequence when issued by hardware. This behavior has likely been hidden by drives that arrange for commands to complete in issue order. However, it appears recent drives (two from different vendors that we have found so far) inflict out-of-order completions as a matter of course. So, we need to take care to maintain ordered submission, otherwise we risk triggering a drive to fall out of sequential-io automation and back to random-io processing, which incurs large latency and degrades throughput. This issue was found in simple benchmarks where QD=2 seq-write performance was 30-50% *greater* than QD=32 seq-write performance. Tagging for -stable and making the change globally since it has a low risk-to-reward ratio. Also, word is that recent versions of an unnamed OS also does it this way now. So, drives in the field are already experienced with this tag ordering scheme. Cc: Cc: Dave Jiang Cc: Ed Ciechanowski Reviewed-by: Matthew Wilcox Signed-off-by: Dan Williams Signed-off-by: Tejun Heo --- drivers/ata/libata-core.c | 21 +++++++++++++-------- include/linux/libata.h | 1 + 2 files changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f2a6020366e1..73c5d0410d47 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4794,21 +4794,26 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words) static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap) { struct ata_queued_cmd *qc = NULL; - unsigned int i; + unsigned int i, tag; /* no command while frozen */ if (unlikely(ap->pflags & ATA_PFLAG_FROZEN)) return NULL; - /* the last tag is reserved for internal command. */ - for (i = 0; i < ATA_MAX_QUEUE - 1; i++) - if (!test_and_set_bit(i, &ap->qc_allocated)) { - qc = __ata_qc_from_tag(ap, i); + for (i = 0; i < ATA_MAX_QUEUE; i++) { + tag = (i + ap->last_tag + 1) % ATA_MAX_QUEUE; + + /* the last tag is reserved for internal command. */ + if (tag == ATA_TAG_INTERNAL) + continue; + + if (!test_and_set_bit(tag, &ap->qc_allocated)) { + qc = __ata_qc_from_tag(ap, tag); + qc->tag = tag; + ap->last_tag = tag; break; } - - if (qc) - qc->tag = i; + } return qc; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 1de36be64df4..5ab4e3a76721 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -822,6 +822,7 @@ struct ata_port { unsigned long qc_allocated; unsigned int qc_active; int nr_active_links; /* #links with active qcs */ + unsigned int last_tag; /* track next tag hw expects */ struct ata_link link; /* host default link */ struct ata_link *slave_link; /* see ata_slave_link_init() */ From ada76576404330413eaeb864a265ad250af48d8f Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 1 Apr 2014 13:37:27 +0300 Subject: [PATCH 163/623] ARM: dts: omap5: Add clocks to USB3 PHY node The USB3 PHY driver (ti-pipe3) was updated so that the relevant clock phandles are expected in the DT node. Provide the necessary clocks. Reported-by: Kishon Vijay Abraham I Signed-off-by: Roger Quadros Acked-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap5.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index 6f3de22fb266..4db56f3569a4 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -813,6 +813,12 @@ <0x4a084c00 0x40>; reg-names = "phy_rx", "phy_tx", "pll_ctrl"; ctrl-module = <&omap_control_usb3phy>; + clocks = <&usb_phy_cm_clk32k>, + <&sys_clkin>, + <&usb_otg_ss_refclk960m>; + clock-names = "wkupclk", + "sysclk", + "refclk"; #phy-cells = <0>; }; }; From 8c0b4fd89ead67f5aca63abbadc81dd316b6462c Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Wed, 2 Apr 2014 16:46:25 +0300 Subject: [PATCH 164/623] ARM: dts: dra7xx-clocks: Correct mcasp2_ahclkx_mux bit-shift The correct bit is 24 for AHCLKX. Signed-off-by: Peter Ujfalusi Acked-by: Tero Kristo Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/dra7xx-clocks.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi b/arch/arm/boot/dts/dra7xx-clocks.dtsi index e96da9a898ad..cfb8fc753f50 100644 --- a/arch/arm/boot/dts/dra7xx-clocks.dtsi +++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi @@ -1640,7 +1640,7 @@ #clock-cells = <0>; compatible = "ti,mux-clock"; clocks = <&abe_24m_fclk>, <&abe_sys_clk_div>, <&func_24m_clk>, <&atlclkin3_ck>, <&atl_clkin2_ck>, <&atl_clkin1_ck>, <&atl_clkin0_ck>, <&sys_clkin2>, <&ref_clkin0_ck>, <&ref_clkin1_ck>, <&ref_clkin2_ck>, <&ref_clkin3_ck>, <&mlb_clk>, <&mlbp_clk>; - ti,bit-shift = <28>; + ti,bit-shift = <24>; reg = <0x1860>; }; From 3348e28ddc0eb9749365d6e7ff9f1828667622e3 Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Tue, 8 Apr 2014 22:51:18 +0200 Subject: [PATCH 165/623] ARM: OMAP2+: N900: remove omapdss init for DT boot Do not try to initialize display for DT boot, since omapdss is now initialized via Device Tree. Without this patch the display subsystem does not properly come up. Signed-off-by: Sebastian Reichel Acked-by: Tomi Valkeinen Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-rx51-video.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/board-rx51-video.c b/arch/arm/mach-omap2/board-rx51-video.c index 43a90c8d6837..9cfebc5c7455 100644 --- a/arch/arm/mach-omap2/board-rx51-video.c +++ b/arch/arm/mach-omap2/board-rx51-video.c @@ -48,7 +48,7 @@ static struct omap_dss_board_info rx51_dss_board_info = { static int __init rx51_video_init(void) { - if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900")) + if (!machine_is_nokia_rx51()) return 0; if (omap_mux_init_gpio(RX51_LCD_RESET_GPIO, OMAP_PIN_OUTPUT)) { From 365c107dcbd825739b88ef46cf4249a3dcb57fee Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 1 Apr 2014 18:38:13 +0200 Subject: [PATCH 166/623] ARM: AM335X: EVM: fix pinmux documentation in devicetree Wrong documentation in pinmux description can be especially confusing. Keep it proper. Signed-off-by: Wolfram Sang Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-evm.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index 28ae040e7c3d..668b62f025d8 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -301,8 +301,8 @@ am335x_evm_audio_pins: am335x_evm_audio_pins { pinctrl-single,pins = < - 0x10c (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_rx_dv.mcasp1_aclkx */ - 0x110 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_txd3.mcasp1_fsx */ + 0x10c (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_crs.mcasp1_aclkx */ + 0x110 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* mii1_rxerr.mcasp1_fsx */ 0x108 (PIN_OUTPUT_PULLDOWN | MUX_MODE4) /* mii1_col.mcasp1_axr2 */ 0x144 (PIN_INPUT_PULLDOWN | MUX_MODE4) /* rmii1_ref_clk.mcasp1_axr3 */ >; From 4b549bf8bba3a65499ef8673cb1955bf4faab0de Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 8 Apr 2014 11:20:17 +0200 Subject: [PATCH 167/623] ARM: dts: OMAP2+: remove uses of obsolete gpmc,device-nand Remove all remaining uses of gpmc,device-nand that have been added since the property was removed by commit f40739faba8e ("ARM: dts: OMAP2+: Simplify NAND support"). Signed-off-by: Johan Hovold Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-igep0033.dtsi | 1 - arch/arm/boot/dts/omap3-devkit8000.dts | 1 - arch/arm/boot/dts/omap3-lilly-a83x.dtsi | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/arm/boot/dts/am335x-igep0033.dtsi b/arch/arm/boot/dts/am335x-igep0033.dtsi index 7063311a58d9..06c822a48b71 100644 --- a/arch/arm/boot/dts/am335x-igep0033.dtsi +++ b/arch/arm/boot/dts/am335x-igep0033.dtsi @@ -118,7 +118,6 @@ reg = <0 0 0>; /* CS0, offset 0 */ nand-bus-width = <8>; ti,nand-ecc-opt = "bch8"; - gpmc,device-nand = "true"; gpmc,device-width = <1>; gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; diff --git a/arch/arm/boot/dts/omap3-devkit8000.dts b/arch/arm/boot/dts/omap3-devkit8000.dts index bf5a515a3247..da402f0fdab4 100644 --- a/arch/arm/boot/dts/omap3-devkit8000.dts +++ b/arch/arm/boot/dts/omap3-devkit8000.dts @@ -112,7 +112,6 @@ reg = <0 0 0>; /* CS0, offset 0 */ nand-bus-width = <16>; - gpmc,device-nand; gpmc,sync-clk-ps = <0>; gpmc,cs-on-ns = <0>; gpmc,cs-rd-off-ns = <44>; diff --git a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi index 6369d9f43ca2..cc1dce6978f5 100644 --- a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi +++ b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi @@ -368,7 +368,6 @@ /* no elm on omap3 */ gpmc,mux-add-data = <0>; - gpmc,device-nand; gpmc,device-width = <2>; gpmc,wait-pin = <0>; gpmc,wait-monitoring-ns = <0>; From a2f8d6b303213a98436455aece7e14cdd1240629 Mon Sep 17 00:00:00 2001 From: Leigh Brown Date: Wed, 16 Apr 2014 12:26:35 +0100 Subject: [PATCH 168/623] ARM: dts: am335x: update USB DT references In "ARM: dts: am33xx: correcting dt node unit address for usb", the usb_ctrl_mod and cppi41dma nodes were updated with the correct register addresses. However, the dts files that reference these nodes were not updated, and those devices are no longer being enabled. This patch corrects the references for the affected dts files. Signed-off-by: Leigh Brown Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-bone-common.dtsi | 4 ++-- arch/arm/boot/dts/am335x-evm.dts | 4 ++-- arch/arm/boot/dts/am335x-evmsk.dts | 4 ++-- arch/arm/boot/dts/am335x-igep0033.dtsi | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi index e3f27ec31718..2e7d932887b5 100644 --- a/arch/arm/boot/dts/am335x-bone-common.dtsi +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi @@ -183,7 +183,7 @@ &usb { status = "okay"; - control@44e10000 { + control@44e10620 { status = "okay"; }; @@ -204,7 +204,7 @@ dr_mode = "host"; }; - dma-controller@07402000 { + dma-controller@47402000 { status = "okay"; }; }; diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts index 668b62f025d8..6028217ace0f 100644 --- a/arch/arm/boot/dts/am335x-evm.dts +++ b/arch/arm/boot/dts/am335x-evm.dts @@ -331,7 +331,7 @@ &usb { status = "okay"; - control@44e10000 { + control@44e10620 { status = "okay"; }; @@ -352,7 +352,7 @@ dr_mode = "host"; }; - dma-controller@07402000 { + dma-controller@47402000 { status = "okay"; }; }; diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts index ec08f6f677c3..ab238850a7b2 100644 --- a/arch/arm/boot/dts/am335x-evmsk.dts +++ b/arch/arm/boot/dts/am335x-evmsk.dts @@ -364,7 +364,7 @@ &usb { status = "okay"; - control@44e10000 { + control@44e10620 { status = "okay"; }; @@ -385,7 +385,7 @@ dr_mode = "host"; }; - dma-controller@07402000 { + dma-controller@47402000 { status = "okay"; }; }; diff --git a/arch/arm/boot/dts/am335x-igep0033.dtsi b/arch/arm/boot/dts/am335x-igep0033.dtsi index 06c822a48b71..9f22c189f636 100644 --- a/arch/arm/boot/dts/am335x-igep0033.dtsi +++ b/arch/arm/boot/dts/am335x-igep0033.dtsi @@ -201,7 +201,7 @@ &usb { status = "okay"; - control@44e10000 { + control@44e10620 { status = "okay"; }; @@ -222,7 +222,7 @@ dr_mode = "host"; }; - dma-controller@07402000 { + dma-controller@47402000 { status = "okay"; }; }; From 4883fb22796ba6661ca133d389bc14157a05f480 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Tue, 1 Apr 2014 15:44:34 +0530 Subject: [PATCH 169/623] ARM: OMAP2+: Fix config name for USB3 PHY commit a70143 (drivers: phy: usb3/pipe3: Adapt pipe3 driver to Generic PHY Framework) moved phy-omap-usb3 driver in drivers/usb/phy to drivers/phy and also renamed the file to phy-ti-pipe3. It also renamed the config from OMAP_USB3 to TI_PIPE3 in Kconfig. However the config name was not changed in omap2plus_defconfig. Fixed it here. Signed-off-by: Kishon Vijay Abraham I Acked-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index a9667957b757..a4e8d017f25b 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -226,7 +226,7 @@ CONFIG_USB_DWC3=m CONFIG_USB_TEST=y CONFIG_NOP_USB_XCEIV=y CONFIG_OMAP_USB2=y -CONFIG_OMAP_USB3=y +CONFIG_TI_PIPE3=y CONFIG_AM335X_PHY_USB=y CONFIG_USB_GADGET=y CONFIG_USB_GADGET_DEBUG=y From 5c5be9db5321a457c8beee019548cb396baf81d4 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 28 Mar 2014 11:11:37 +0100 Subject: [PATCH 170/623] ARM: dts: Grammar /is uses/ is used/ Signed-off-by: Geert Uytterhoeven Cc: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am33xx.dtsi | 2 +- arch/arm/boot/dts/dra7.dtsi | 2 +- arch/arm/boot/dts/omap4.dtsi | 2 +- arch/arm/boot/dts/omap5.dtsi | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index 9770e35f2536..0c2034f3b123 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -72,7 +72,7 @@ }; /* - * The soc node represents the soc top level view. It is uses for IPs + * The soc node represents the soc top level view. It is used for IPs * that are not memory mapped in the MPU view or for the MPU itself. */ soc { diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index 1c0f8e1893ae..f56c96a2fd68 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -80,7 +80,7 @@ }; /* - * The soc node represents the soc top level view. It is uses for IPs + * The soc node represents the soc top level view. It is used for IPs * that are not memory mapped in the MPU view or for the MPU itself. */ soc { diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi index 27fcac874742..de282e5dec39 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -72,7 +72,7 @@ }; /* - * The soc node represents the soc top level view. It is uses for IPs + * The soc node represents the soc top level view. It is used for IPs * that are not memory mapped in the MPU view or for the MPU itself. */ soc { diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index 4db56f3569a4..e2526b8cc68c 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -93,7 +93,7 @@ }; /* - * The soc node represents the soc top level view. It is uses for IPs + * The soc node represents the soc top level view. It is used for IPs * that are not memory mapped in the MPU view or for the MPU itself. */ soc { From b7ab524b9340ed3775a53e52987a3d3f1056df7c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 28 Mar 2014 11:11:39 +0100 Subject: [PATCH 171/623] ARM: dts: Grammar /that will/it will/ Signed-off-by: Geert Uytterhoeven Cc: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am33xx.dtsi | 4 ++-- arch/arm/boot/dts/dra7.dtsi | 2 +- arch/arm/boot/dts/omap3.dtsi | 2 +- arch/arm/boot/dts/omap4.dtsi | 2 +- arch/arm/boot/dts/omap5.dtsi | 2 +- 5 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index 0c2034f3b123..07f283c20eb1 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -94,8 +94,8 @@ /* * XXX: Use a flat representation of the AM33XX interconnect. - * The real AM33XX interconnect network is quite complex.Since - * that will not bring real advantage to represent that in DT + * The real AM33XX interconnect network is quite complex. Since + * it will not bring real advantage to represent that in DT * for the moment, just use a fake OCP bus entry to represent * the whole bus hierarchy. */ diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi index f56c96a2fd68..149b55099935 100644 --- a/arch/arm/boot/dts/dra7.dtsi +++ b/arch/arm/boot/dts/dra7.dtsi @@ -94,7 +94,7 @@ /* * XXX: Use a flat representation of the SOC interconnect. * The real OMAP interconnect network is quite complex. - * Since that will not bring real advantage to represent that in DT for + * Since it will not bring real advantage to represent that in DT for * the moment, just use a fake OCP bus entry to represent the whole bus * hierarchy. */ diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi index 5e5790f631eb..acb9019dc437 100644 --- a/arch/arm/boot/dts/omap3.dtsi +++ b/arch/arm/boot/dts/omap3.dtsi @@ -74,7 +74,7 @@ /* * XXX: Use a flat representation of the OMAP3 interconnect. * The real OMAP interconnect network is quite complex. - * Since that will not bring real advantage to represent that in DT for + * Since it will not bring real advantage to represent that in DT for * the moment, just use a fake OCP bus entry to represent the whole bus * hierarchy. */ diff --git a/arch/arm/boot/dts/omap4.dtsi b/arch/arm/boot/dts/omap4.dtsi index de282e5dec39..649b5cd38b40 100644 --- a/arch/arm/boot/dts/omap4.dtsi +++ b/arch/arm/boot/dts/omap4.dtsi @@ -96,7 +96,7 @@ /* * XXX: Use a flat representation of the OMAP4 interconnect. * The real OMAP interconnect network is quite complex. - * Since that will not bring real advantage to represent that in DT for + * Since it will not bring real advantage to represent that in DT for * the moment, just use a fake OCP bus entry to represent the whole bus * hierarchy. */ diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi index e2526b8cc68c..f8c9855ce587 100644 --- a/arch/arm/boot/dts/omap5.dtsi +++ b/arch/arm/boot/dts/omap5.dtsi @@ -107,7 +107,7 @@ /* * XXX: Use a flat representation of the OMAP3 interconnect. * The real OMAP interconnect network is quite complex. - * Since that will not bring real advantage to represent that in DT for + * Since it will not bring real advantage to represent that in DT for * the moment, just use a fake OCP bus entry to represent the whole bus * hierarchy. */ From ef78f3869c37c480f1d58462a760a40dabc823f4 Mon Sep 17 00:00:00 2001 From: Robert Nelson Date: Tue, 15 Apr 2014 10:09:59 -0500 Subject: [PATCH 172/623] ARM: dts: Add support for the BeagleBoard xM A/B BeagleBoard xM A/B has an inverted usb hub enable line vs the xM C Signed-off-by: Robert Nelson [tony@atomide.com: updated for missing bracket] Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/omap3-beagle-xm-ab.dts | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) create mode 100644 arch/arm/boot/dts/omap3-beagle-xm-ab.dts diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 35c146f31e46..0bdeba3f2da4 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -246,6 +246,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \ omap3-sbc-t3730.dtb \ omap3-devkit8000.dtb \ omap3-beagle-xm.dtb \ + omap3-beagle-xm-ab.dtb \ omap3-evm.dtb \ omap3-evm-37xx.dtb \ omap3-ldp.dtb \ diff --git a/arch/arm/boot/dts/omap3-beagle-xm-ab.dts b/arch/arm/boot/dts/omap3-beagle-xm-ab.dts new file mode 100644 index 000000000000..7ac3bcf59d59 --- /dev/null +++ b/arch/arm/boot/dts/omap3-beagle-xm-ab.dts @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "omap3-beagle-xm.dts" + +/ { + /* HS USB Port 2 Power enable was inverted with the xM C */ + hsusb2_power: hsusb2_power_reg { + enable-active-high; + }; +}; From 76e6dcece841faebbee78895780e8209ff40d922 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 18 Apr 2014 09:08:11 -0400 Subject: [PATCH 173/623] drm/radeon: disable dpm on rv770 by default There seem to be stability issues on a number of cards. bugs: https://bugs.freedesktop.org/show_bug.cgi?id=76286 https://bugzilla.redhat.com/show_bug.cgi?id=1085785 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741619 Signed-off-by: Alex Deucher Cc: matthias.graf@st.ovqu.de Cc: bp@alien8.de Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index ee738a524639..0c4473db8501 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -1257,6 +1257,7 @@ int radeon_pm_init(struct radeon_device *rdev) case CHIP_RV670: case CHIP_RS780: case CHIP_RS880: + case CHIP_RV770: case CHIP_BARTS: case CHIP_TURKS: case CHIP_CAICOS: @@ -1273,7 +1274,6 @@ int radeon_pm_init(struct radeon_device *rdev) else rdev->pm.pm_method = PM_METHOD_PROFILE; break; - case CHIP_RV770: case CHIP_RV730: case CHIP_RV710: case CHIP_RV740: From 24315814239a3fdb306244c99bd076bc79db4ade Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Sat, 19 Apr 2014 18:57:14 +0200 Subject: [PATCH 174/623] drm/radeon: use fixed PPL ref divider if needed MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Christian König --- drivers/gpu/drm/radeon/radeon_display.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 2f7cbb901fb1..e6c3c5488259 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -880,7 +880,12 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, ref_div_min = pll->reference_div; else ref_div_min = pll->min_ref_div; - ref_div_max = pll->max_ref_div; + + if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV && + pll->flags & RADEON_PLL_USE_REF_DIV) + ref_div_max = pll->reference_div; + else + ref_div_max = pll->max_ref_div; /* determine allowed post divider range */ if (pll->flags & RADEON_PLL_USE_POST_DIV) { From 404ca80eb5c2727d78cd517d12108b040c522e12 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 19 Apr 2014 10:15:07 -0700 Subject: [PATCH 175/623] coredump: fix va_list corruption A va_list needs to be copied in case it needs to be used twice. Thanks to Hugh for debugging this issue, leading to various panics. Tested: lpq84:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern 'produce_core' is simply : main() { *(int *)0 = 1;} lpq84:~# ./produce_core Segmentation fault (core dumped) lpq84:~# dmesg | tail -1 [ 614.352947] Core dump to |/foobar12345 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 (null) pipe failed Notice the last argument was replaced by a NULL (we were lucky enough to not crash, but do not try this on your production machine !) After fix : lpq83:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern lpq83:~# ./produce_core Segmentation fault lpq83:~# dmesg | tail -1 [ 740.800441] Core dump to |/foobar12345 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 pipe failed Fixes: 5fe9d8ca21cc ("coredump: cn_vprintf() has no reason to call vsnprintf() twice") Signed-off-by: Eric Dumazet Diagnosed-by: Hugh Dickins Acked-by: Oleg Nesterov Cc: Neil Horman Cc: Andrew Morton Cc: stable@vger.kernel.org # 3.11+ Signed-off-by: Linus Torvalds --- fs/coredump.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/coredump.c b/fs/coredump.c index e3ad709a4232..0b2528fb640e 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -73,10 +73,15 @@ static int expand_corename(struct core_name *cn, int size) static int cn_vprintf(struct core_name *cn, const char *fmt, va_list arg) { int free, need; + va_list arg_copy; again: free = cn->size - cn->used; - need = vsnprintf(cn->corename + cn->used, free, fmt, arg); + + va_copy(arg_copy, arg); + need = vsnprintf(cn->corename + cn->used, free, fmt, arg_copy); + va_end(arg_copy); + if (need < free) { cn->used += need; return 0; From a8680e0d5efd46aa54d7085e5b4a268f726922c7 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Sat, 19 Apr 2014 16:37:31 -0400 Subject: [PATCH 176/623] ext4: fix COLLAPSE_RANGE failure with 1KB block size When formatting with 1KB or 2KB(not aligned with PAGE SIZE) block size, xfstests generic/075 and 091 are failing. The offset supplied to function truncate_pagecache_range is block size aligned. In this function start offset is re-aligned to PAGE_SIZE by rounding_up to the next page boundary. Due to this rounding up, old data remains in the page cache when blocksize is less than page size and start offset is not aligned with page size. In case of collapse range, we need to align start offset to page size boundary by doing a round down operation instead of round up. Signed-off-by: Namjae Jeon Signed-off-by: Ashish Sangwan Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 9b9251adb400..d6bca2a1debe 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5395,7 +5395,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) ext4_lblk_t punch_start, punch_stop; handle_t *handle; unsigned int credits; - loff_t new_size; + loff_t new_size, ioffset; int ret; /* Collapse range works only on fs block size aligned offsets. */ @@ -5418,8 +5418,15 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) return ret; } + /* + * Need to round down offset to be aligned with page size boundary + * for page size > block size. + */ + ioffset = round_down(offset, PAGE_SIZE); + /* Write out all dirty pages */ - ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); + ret = filemap_write_and_wait_range(inode->i_mapping, ioffset, + LLONG_MAX); if (ret) return ret; @@ -5441,7 +5448,7 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) goto out_mutex; } - truncate_pagecache(inode, offset); + truncate_pagecache(inode, ioffset); /* Wait for existing dio to complete */ ext4_inode_block_unlocked_dio(inode); From 0a04b248532b358b27a8da050642da6f5f304b03 Mon Sep 17 00:00:00 2001 From: Namjae Jeon Date: Sat, 19 Apr 2014 16:38:21 -0400 Subject: [PATCH 177/623] ext4: disable COLLAPSE_RANGE for bigalloc Once COLLAPSE RANGE is be disable for ext4 with bigalloc feature till finding root-cause of problem. It will be enable with fixing that regression of xfstest(generic 075 and 091) again. Signed-off-by: Namjae Jeon Signed-off-by: Ashish Sangwan Reviewed-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index d6bca2a1debe..01b0c208f625 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -5406,6 +5406,9 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) if (!S_ISREG(inode->i_mode)) return -EINVAL; + if (EXT4_SB(inode->i_sb)->s_cluster_ratio > 1) + return -EOPNOTSUPP; + trace_ext4_collapse_range(inode, offset, len); punch_start = offset >> EXT4_BLOCK_SIZE_BITS(sb); From 06491e84f0f95dbe105b74fef32e7063e349f2d7 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Tue, 8 Apr 2014 13:55:17 -0700 Subject: [PATCH 178/623] Input: da9055_onkey - remove use of regmap_irq_get_virq() Using platform_get_irq_byname() to retrieve the IRQ number returns the VIRQ number rather than the local IRQ number for the device. Passing that value then into regmap_irq_get_virq() causes a failure because the function is expecting the local IRQ number (e.g. 0, 1, 2, 3, etc). This patch removes use of regmap_irq_get_virq() to prevent this failure from happening. Signed-off-by: Adam Thomson Signed-off-by: Andrew Morton Signed-off-by: Dmitry Torokhov --- drivers/input/misc/da9055_onkey.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/input/misc/da9055_onkey.c b/drivers/input/misc/da9055_onkey.c index 4b11ede34950..4765799fef74 100644 --- a/drivers/input/misc/da9055_onkey.c +++ b/drivers/input/misc/da9055_onkey.c @@ -109,7 +109,6 @@ static int da9055_onkey_probe(struct platform_device *pdev) INIT_DELAYED_WORK(&onkey->work, da9055_onkey_work); - irq = regmap_irq_get_virq(da9055->irq_data, irq); err = request_threaded_irq(irq, NULL, da9055_onkey_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "ONKEY", onkey); From 2fdf4cd9a2afb113e566dfe6ee5df55ada8c0631 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Sat, 12 Apr 2014 13:42:24 -0700 Subject: [PATCH 179/623] Input: ads7846 - fix device usage within attribute show With commit e585c40ba (Input: ads7846 - convert to hwmon_device_register_with_groups()) the device passed to the attribute's show function isn't the spi device as before. So fixup the passed device to ads7846_read12_ser. Signed-off-by: Alexander Stein Acked-by: Guenter Roeck Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/ads7846.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 45a06e495ed2..7f8aa981500d 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -425,7 +425,7 @@ static int ads7845_read12_ser(struct device *dev, unsigned command) name ## _show(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct ads7846 *ts = dev_get_drvdata(dev); \ - ssize_t v = ads7846_read12_ser(dev, \ + ssize_t v = ads7846_read12_ser(&ts->spi->dev, \ READ_12BIT_SER(var)); \ if (v < 0) \ return v; \ From 91ae0e77836b4a13f511b4fc62dc31c523858187 Mon Sep 17 00:00:00 2001 From: Ping Cheng Date: Sat, 12 Apr 2014 13:43:25 -0700 Subject: [PATCH 180/623] Input: wacom - missed the last bit of expresskey for DTU-1031 Signed-off-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 05f371df6c40..3d094c95851d 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1838,7 +1838,7 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev, case DTU: if (features->type == DTUS) { input_set_capability(input_dev, EV_MSC, MSC_SERIAL); - for (i = 0; i < 3; i++) + for (i = 0; i < 4; i++) __set_bit(BTN_0 + i, input_dev->keybit); } __set_bit(BTN_TOOL_PEN, input_dev->keybit); From 5866d9e3b7ecdf96a6089d12bb65736d7c473bce Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Sat, 19 Apr 2014 13:46:40 -0700 Subject: [PATCH 181/623] Input: wacom - use full 32-bit HID Usage value in switch statement A HID Usage is a 32-bit value: an upper 16-bit "page" and a lower 16-bit ID. While the two halves are normally reported seperately, only the combination uniquely idenfifes a particular HID Usage. The existing code performs the comparison in two steps, first performing a switch on the ID and then verifying the page within each case. While this works fine, it is very akward to handle two Usages that share a single ID, such as HID_USAGE_PRESSURE and HID_USAGE_X because the case statement can only have a single identifier. To work around this, we now check the full 32-bit HID Usage directly rather than first checking the ID and then the page. This allows the switch statement to have distinct cases for e.g. HID_USAGE_PRESSURE and HID_USAGE_X. Signed-off-by: Jason Gerecke Tested-by: Aaron Skomra Reviewed-by: Carl Worth Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_sys.c | 225 ++++++++++++++----------------- 1 file changed, 103 insertions(+), 122 deletions(-) diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index b16ebef5b911..5be617755461 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -22,23 +22,17 @@ #define HID_USAGE_PAGE_DIGITIZER 0x0d #define HID_USAGE_PAGE_DESKTOP 0x01 #define HID_USAGE 0x09 -#define HID_USAGE_X 0x30 -#define HID_USAGE_Y 0x31 -#define HID_USAGE_X_TILT 0x3d -#define HID_USAGE_Y_TILT 0x3e -#define HID_USAGE_FINGER 0x22 -#define HID_USAGE_STYLUS 0x20 -#define HID_USAGE_CONTACTMAX 0x55 +#define HID_USAGE_X ((HID_USAGE_PAGE_DESKTOP << 16) | 0x30) +#define HID_USAGE_Y ((HID_USAGE_PAGE_DESKTOP << 16) | 0x31) +#define HID_USAGE_X_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d) +#define HID_USAGE_Y_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e) +#define HID_USAGE_FINGER ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22) +#define HID_USAGE_STYLUS ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x20) +#define HID_USAGE_CONTACTMAX ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x55) #define HID_COLLECTION 0xa1 #define HID_COLLECTION_LOGICAL 0x02 #define HID_COLLECTION_END 0xc0 -enum { - WCM_UNDEFINED = 0, - WCM_DESKTOP, - WCM_DIGITIZER, -}; - struct hid_descriptor { struct usb_descriptor_header header; __le16 bcdHID; @@ -305,7 +299,7 @@ static int wacom_parse_hid(struct usb_interface *intf, char limit = 0; /* result has to be defined as int for some devices */ int result = 0, touch_max = 0; - int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0; + int i = 0, page = 0, finger = 0, pen = 0; unsigned char *report; report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL); @@ -332,134 +326,121 @@ static int wacom_parse_hid(struct usb_interface *intf, switch (report[i]) { case HID_USAGE_PAGE: - switch (report[i + 1]) { - case HID_USAGE_PAGE_DIGITIZER: - usage = WCM_DIGITIZER; - i++; - break; - - case HID_USAGE_PAGE_DESKTOP: - usage = WCM_DESKTOP; - i++; - break; - } + page = report[i + 1]; + i++; break; case HID_USAGE: - switch (report[i + 1]) { + switch (page << 16 | report[i + 1]) { case HID_USAGE_X: - if (usage == WCM_DESKTOP) { - if (finger) { - features->device_type = BTN_TOOL_FINGER; - /* touch device at least supports one touch point */ - touch_max = 1; - switch (features->type) { - case TABLETPC2FG: - features->pktlen = WACOM_PKGLEN_TPC2FG; - break; + if (finger) { + features->device_type = BTN_TOOL_FINGER; + /* touch device at least supports one touch point */ + touch_max = 1; + switch (features->type) { + case TABLETPC2FG: + features->pktlen = WACOM_PKGLEN_TPC2FG; + break; - case MTSCREEN: - case WACOM_24HDT: - features->pktlen = WACOM_PKGLEN_MTOUCH; - break; + case MTSCREEN: + case WACOM_24HDT: + features->pktlen = WACOM_PKGLEN_MTOUCH; + break; - case MTTPC: - features->pktlen = WACOM_PKGLEN_MTTPC; - break; + case MTTPC: + features->pktlen = WACOM_PKGLEN_MTTPC; + break; - case BAMBOO_PT: - features->pktlen = WACOM_PKGLEN_BBTOUCH; - break; + case BAMBOO_PT: + features->pktlen = WACOM_PKGLEN_BBTOUCH; + break; - default: - features->pktlen = WACOM_PKGLEN_GRAPHIRE; - break; - } + default: + features->pktlen = WACOM_PKGLEN_GRAPHIRE; + break; + } - switch (features->type) { - case BAMBOO_PT: - features->x_phy = - get_unaligned_le16(&report[i + 5]); - features->x_max = - get_unaligned_le16(&report[i + 8]); - i += 15; - break; + switch (features->type) { + case BAMBOO_PT: + features->x_phy = + get_unaligned_le16(&report[i + 5]); + features->x_max = + get_unaligned_le16(&report[i + 8]); + i += 15; + break; - case WACOM_24HDT: - features->x_max = - get_unaligned_le16(&report[i + 3]); - features->x_phy = - get_unaligned_le16(&report[i + 8]); - features->unit = report[i - 1]; - features->unitExpo = report[i - 3]; - i += 12; - break; - - default: - features->x_max = - get_unaligned_le16(&report[i + 3]); - features->x_phy = - get_unaligned_le16(&report[i + 6]); - features->unit = report[i + 9]; - features->unitExpo = report[i + 11]; - i += 12; - break; - } - } else if (pen) { - /* penabled only accepts exact bytes of data */ - if (features->type >= TABLETPC) - features->pktlen = WACOM_PKGLEN_GRAPHIRE; - features->device_type = BTN_TOOL_PEN; + case WACOM_24HDT: features->x_max = get_unaligned_le16(&report[i + 3]); - i += 4; + features->x_phy = + get_unaligned_le16(&report[i + 8]); + features->unit = report[i - 1]; + features->unitExpo = report[i - 3]; + i += 12; + break; + + default: + features->x_max = + get_unaligned_le16(&report[i + 3]); + features->x_phy = + get_unaligned_le16(&report[i + 6]); + features->unit = report[i + 9]; + features->unitExpo = report[i + 11]; + i += 12; + break; } + } else if (pen) { + /* penabled only accepts exact bytes of data */ + if (features->type >= TABLETPC) + features->pktlen = WACOM_PKGLEN_GRAPHIRE; + features->device_type = BTN_TOOL_PEN; + features->x_max = + get_unaligned_le16(&report[i + 3]); + i += 4; } break; case HID_USAGE_Y: - if (usage == WCM_DESKTOP) { - if (finger) { - switch (features->type) { - case TABLETPC2FG: - case MTSCREEN: - case MTTPC: - features->y_max = - get_unaligned_le16(&report[i + 3]); - features->y_phy = - get_unaligned_le16(&report[i + 6]); - i += 7; - break; - - case WACOM_24HDT: - features->y_max = - get_unaligned_le16(&report[i + 3]); - features->y_phy = - get_unaligned_le16(&report[i - 2]); - i += 7; - break; - - case BAMBOO_PT: - features->y_phy = - get_unaligned_le16(&report[i + 3]); - features->y_max = - get_unaligned_le16(&report[i + 6]); - i += 12; - break; - - default: - features->y_max = - features->x_max; - features->y_phy = - get_unaligned_le16(&report[i + 3]); - i += 4; - break; - } - } else if (pen) { + if (finger) { + switch (features->type) { + case TABLETPC2FG: + case MTSCREEN: + case MTTPC: features->y_max = get_unaligned_le16(&report[i + 3]); + features->y_phy = + get_unaligned_le16(&report[i + 6]); + i += 7; + break; + + case WACOM_24HDT: + features->y_max = + get_unaligned_le16(&report[i + 3]); + features->y_phy = + get_unaligned_le16(&report[i - 2]); + i += 7; + break; + + case BAMBOO_PT: + features->y_phy = + get_unaligned_le16(&report[i + 3]); + features->y_max = + get_unaligned_le16(&report[i + 6]); + i += 12; + break; + + default: + features->y_max = + features->x_max; + features->y_phy = + get_unaligned_le16(&report[i + 3]); i += 4; + break; } + } else if (pen) { + features->y_max = + get_unaligned_le16(&report[i + 3]); + i += 4; } break; @@ -489,7 +470,7 @@ static int wacom_parse_hid(struct usb_interface *intf, case HID_COLLECTION_END: /* reset UsagePage and Finger */ - finger = usage = 0; + finger = page = 0; break; case HID_COLLECTION: From e9fc413f4a5ebd9f0f7bdf923c43191e99fc1970 Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Sat, 19 Apr 2014 13:49:37 -0700 Subject: [PATCH 182/623] Input: wacom - override 'pressure_max' with value from HID_USAGE_PRESSURE The 0xEC sensor is used in multiple tablet PCs and curiously has versions that report 256 levels of pressure (Samsung Slate 7) as well as versions that report 1024 levels (Lenovo Thinkpad Yoga). To allow both versions to work properly, we allow the value of HID_USAGE_PRESSURE reported to override pressure_max. Signed-off-by: Jason Gerecke Tested-by: Aaron Skomra Reviewed-by: Carl Worth Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_sys.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 5be617755461..611fc3905d00 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -24,6 +24,7 @@ #define HID_USAGE 0x09 #define HID_USAGE_X ((HID_USAGE_PAGE_DESKTOP << 16) | 0x30) #define HID_USAGE_Y ((HID_USAGE_PAGE_DESKTOP << 16) | 0x31) +#define HID_USAGE_PRESSURE ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x30) #define HID_USAGE_X_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3d) #define HID_USAGE_Y_TILT ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x3e) #define HID_USAGE_FINGER ((HID_USAGE_PAGE_DIGITIZER << 16) | 0x22) @@ -465,6 +466,14 @@ static int wacom_parse_hid(struct usb_interface *intf, wacom_retrieve_report_data(intf, features); i++; break; + + case HID_USAGE_PRESSURE: + if (pen) { + features->pressure_max = + get_unaligned_le16(&report[i + 3]); + i += 4; + } + break; } break; From 74b634178e5f0e2d8d2d26f308c440687930274b Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Sat, 19 Apr 2014 13:50:22 -0700 Subject: [PATCH 183/623] Input: wacom - references to 'wacom->data' should use 'unsigned char*' 'wacom->data' contains raw binary data and can lead to unexpected behavior if a byte under examination happens to have its MSB set. Signed-off-by: Jason Gerecke Tested-by: Aaron Skomra Reviewed-by: Carl Worth Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 3d094c95851d..99710e9fdd6a 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -178,10 +178,9 @@ static int wacom_ptu_irq(struct wacom_wac *wacom) static int wacom_dtu_irq(struct wacom_wac *wacom) { - struct wacom_features *features = &wacom->features; - char *data = wacom->data; + unsigned char *data = wacom->data; struct input_dev *input = wacom->input; - int prox = data[1] & 0x20, pressure; + int prox = data[1] & 0x20; dev_dbg(input->dev.parent, "%s: received report #%d", __func__, data[0]); @@ -198,10 +197,7 @@ static int wacom_dtu_irq(struct wacom_wac *wacom) input_report_key(input, BTN_STYLUS2, data[1] & 0x10); input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2])); input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4])); - pressure = ((data[7] & 0x01) << 8) | data[6]; - if (pressure < 0) - pressure = features->pressure_max + pressure + 1; - input_report_abs(input, ABS_PRESSURE, pressure); + input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]); input_report_key(input, BTN_TOUCH, data[1] & 0x05); if (!prox) /* out-prox */ wacom->id[0] = 0; @@ -906,7 +902,7 @@ static int int_dist(int x1, int y1, int x2, int y2) static int wacom_24hdt_irq(struct wacom_wac *wacom) { struct input_dev *input = wacom->input; - char *data = wacom->data; + unsigned char *data = wacom->data; int i; int current_num_contacts = data[61]; int contacts_to_send = 0; @@ -959,7 +955,7 @@ static int wacom_24hdt_irq(struct wacom_wac *wacom) static int wacom_mt_touch(struct wacom_wac *wacom) { struct input_dev *input = wacom->input; - char *data = wacom->data; + unsigned char *data = wacom->data; int i; int current_num_contacts = data[2]; int contacts_to_send = 0; @@ -1038,7 +1034,7 @@ static int wacom_tpc_mt_touch(struct wacom_wac *wacom) static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len) { - char *data = wacom->data; + unsigned char *data = wacom->data; struct input_dev *input = wacom->input; bool prox; int x = 0, y = 0; @@ -1074,10 +1070,8 @@ static int wacom_tpc_single_touch(struct wacom_wac *wacom, size_t len) static int wacom_tpc_pen(struct wacom_wac *wacom) { - struct wacom_features *features = &wacom->features; - char *data = wacom->data; + unsigned char *data = wacom->data; struct input_dev *input = wacom->input; - int pressure; bool prox = data[1] & 0x20; if (!wacom->shared->stylus_in_proximity) /* first in prox */ @@ -1093,10 +1087,7 @@ static int wacom_tpc_pen(struct wacom_wac *wacom) input_report_key(input, BTN_STYLUS2, data[1] & 0x10); input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2])); input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4])); - pressure = ((data[7] & 0x01) << 8) | data[6]; - if (pressure < 0) - pressure = features->pressure_max + pressure + 1; - input_report_abs(input, ABS_PRESSURE, pressure); + input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]); input_report_key(input, BTN_TOUCH, data[1] & 0x05); input_report_key(input, wacom->tool[0], prox); return 1; @@ -1107,7 +1098,7 @@ static int wacom_tpc_pen(struct wacom_wac *wacom) static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len) { - char *data = wacom->data; + unsigned char *data = wacom->data; dev_dbg(wacom->input->dev.parent, "%s: received report #%d\n", __func__, data[0]); From 38a1807badd26d413e8f2b0393a0c5bfdf9e912b Mon Sep 17 00:00:00 2001 From: Jason Gerecke Date: Sat, 19 Apr 2014 13:51:41 -0700 Subject: [PATCH 184/623] Input: wacom - handle 1024 pressure levels in wacom_tpc_pen Some tablet PC sensors (e.g. the 0xEC found in the Thinkpad Yoga) report more than 256 pressure levels and will experience wraparound unless the full range is read. Signed-off-by: Jason Gerecke Tested-by: Aaron Skomra Reviewed-by: Carl Worth Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 99710e9fdd6a..4822c57a3756 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -1087,7 +1087,7 @@ static int wacom_tpc_pen(struct wacom_wac *wacom) input_report_key(input, BTN_STYLUS2, data[1] & 0x10); input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2])); input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4])); - input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x01) << 8) | data[6]); + input_report_abs(input, ABS_PRESSURE, ((data[7] & 0x03) << 8) | data[6]); input_report_key(input, BTN_TOUCH, data[1] & 0x05); input_report_key(input, wacom->tool[0], prox); return 1; From acb61fc8ed73eb477a9044272d7a1b1f5a572f91 Mon Sep 17 00:00:00 2001 From: Alexander Yarygin Date: Wed, 9 Apr 2014 16:21:59 +0200 Subject: [PATCH 185/623] perf kvm: Fix 'Min time' counting in report command Every event in the perf-kvm has a 'stats' structure, which contains max/min/average/etc times of handling this event. The problem is that the 'perf-kvm stat report' command always shows that 'min time' is 0us for every event. Example: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 0us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 0us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 0us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 0us 44us 16.49us ( +- 38.20% ) [..] This happens because the 'stats' structure is not initialized and stats->min equals to 0. Lets initialize the structure for every event after its allocation using init_stats() function. This initializes stats->min to -1 and makes 'Min time' statistics counting work: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 6us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 7us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 1us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 1us 44us 16.49us ( +- 38.20% ) [..] Signed-off-by: Alexander Yarygin Signed-off-by: Christian Borntraeger Reviewed-by: David Ahern Link: http://lkml.kernel.org/r/1397053319-2130-3-git-send-email-borntraeger@de.ibm.com [ Fixing the perf examples changelog output ] Signed-off-by: Jiri Olsa --- tools/perf/builtin-kvm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 21c164b8f9db..0f1e5a2f6ad7 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -404,6 +404,7 @@ static struct kvm_event *kvm_alloc_init_event(struct event_key *key) } event->key = *key; + init_stats(&event->total.stats); return event; } From 922d0e4d9f042f68baea28e5b3bd7bb708875f2e Mon Sep 17 00:00:00 2001 From: Vladimir Nikulichev Date: Thu, 17 Apr 2014 08:27:01 -0700 Subject: [PATCH 186/623] perf tools: Adjust symbols in VDSO pert-report doesn't resolve function names in VDSO: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% 0x7fff6b1fe861 __gettimeofday ACE_OS::gettimeofday() ... In this case symbol values should be adjusted the same way as for executables, relocatable objects and prelinked libraries. After fix: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% __vdso_gettimeofday __gettimeofday ACE_OS::gettimeofday() Signed-off-by: Vladimir Nikulichev Tested-by: Namhyung Kim Reviewed-by: Adrian Hunter Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvs Signed-off-by: Jiri Olsa --- tools/perf/util/symbol-elf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 3b7dbf51d4a9..6864661a79dd 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -6,6 +6,7 @@ #include #include "symbol.h" +#include "vdso.h" #include #include "debug.h" @@ -618,6 +619,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, GElf_Shdr shdr; ss->adjust_symbols = (ehdr.e_type == ET_EXEC || ehdr.e_type == ET_REL || + is_vdso_map(dso->short_name) || elf_section_by_name(elf, &ehdr, &shdr, ".gnu.prelink_undo", NULL) != NULL); From ffa91880a992ec1aaee4b4f7c9ddffda0c277ba9 Mon Sep 17 00:00:00 2001 From: Adrien BAK Date: Fri, 18 Apr 2014 11:00:43 +0900 Subject: [PATCH 187/623] perf tools: Improve error reporting In the current version, when using perf record, if something goes wrong in tools/perf/builtin-record.c:375 session = perf_session__new(file, false, NULL); The error message: "Not enough memory for reading per file header" is issued. This error message seems to be outdated and is not very helpful. This patch proposes to replace this error message by "Perf session creation failed" I believe this issue has been brought to lkml: https://lkml.org/lkml/2014/2/24/458 although this patch only tackles a (small) part of the issue. Additionnaly, this patch improves error reporting in tools/perf/util/data.c open_file_write. Currently, if the call to open fails, the user is unaware of it. This patch logs the error, before returning the error code to the caller. Reported-by: Will Deacon Signed-off-by: Adrien BAK Link: http://lkml.kernel.org/r/1397786443.3093.4.camel@beast [ Reorganize the changelog into paragraphs ] [ Added empty line after fd declaration in open_file_write ] Signed-off-by: Jiri Olsa --- tools/perf/builtin-record.c | 2 +- tools/perf/util/data.c | 9 ++++++++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index eb524f91bffe..8ce62ef7f6c3 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -374,7 +374,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv) session = perf_session__new(file, false, NULL); if (session == NULL) { - pr_err("Not enough memory for reading perf file header\n"); + pr_err("Perf session creation failed.\n"); return -1; } diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index 1fbcd8bdc11b..55de44ecebef 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -86,10 +86,17 @@ static int open_file_read(struct perf_data_file *file) static int open_file_write(struct perf_data_file *file) { + int fd; + if (check_backup(file)) return -1; - return open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR); + fd = open(file->path, O_CREAT|O_RDWR|O_TRUNC, S_IRUSR|S_IWUSR); + + if (fd < 0) + pr_err("failed to open %s : %s\n", file->path, strerror(errno)); + + return fd; } static int open_file(struct perf_data_file *file) From 0456c66f4e905e1ca839318219c770988b47975c Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 19 Apr 2014 20:39:35 -0700 Subject: [PATCH 188/623] Input: serio - add firmware_id sysfs attribute serio devices exposed via platform firmware interfaces such as ACPI may provide additional identifying information of use to userspace. We don't associate the serio devices with the firmware device (we don't set it as parent), so there's no way for userspace to make use of this information. We cannot change the parent for serio devices instantiated though a firmware interface as that would break suspend / resume ordering. Therefore this patch adds a new firmware_id sysfs attribute so that userspace can get a string from there with any additional identifying information the firmware interface may provide. Signed-off-by: Hans de Goede Acked-by: Peter Hutterer Signed-off-by: Dmitry Torokhov --- drivers/input/serio/serio.c | 14 ++++++++++++++ include/linux/serio.h | 1 + 2 files changed, 15 insertions(+) diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 8f4c4ab04bc2..b29134de983b 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -451,6 +451,13 @@ static ssize_t serio_set_bind_mode(struct device *dev, struct device_attribute * return retval; } +static ssize_t firmware_id_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct serio *serio = to_serio_port(dev); + + return sprintf(buf, "%s\n", serio->firmware_id); +} + static DEVICE_ATTR_RO(type); static DEVICE_ATTR_RO(proto); static DEVICE_ATTR_RO(id); @@ -473,12 +480,14 @@ static DEVICE_ATTR_RO(modalias); static DEVICE_ATTR_WO(drvctl); static DEVICE_ATTR(description, S_IRUGO, serio_show_description, NULL); static DEVICE_ATTR(bind_mode, S_IWUSR | S_IRUGO, serio_show_bind_mode, serio_set_bind_mode); +static DEVICE_ATTR_RO(firmware_id); static struct attribute *serio_device_attrs[] = { &dev_attr_modalias.attr, &dev_attr_description.attr, &dev_attr_drvctl.attr, &dev_attr_bind_mode.attr, + &dev_attr_firmware_id.attr, NULL }; @@ -921,9 +930,14 @@ static int serio_uevent(struct device *dev, struct kobj_uevent_env *env) SERIO_ADD_UEVENT_VAR("SERIO_PROTO=%02x", serio->id.proto); SERIO_ADD_UEVENT_VAR("SERIO_ID=%02x", serio->id.id); SERIO_ADD_UEVENT_VAR("SERIO_EXTRA=%02x", serio->id.extra); + SERIO_ADD_UEVENT_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X", serio->id.type, serio->id.proto, serio->id.id, serio->id.extra); + if (serio->firmware_id[0]) + SERIO_ADD_UEVENT_VAR("SERIO_FIRMWARE_ID=%s", + serio->firmware_id); + return 0; } #undef SERIO_ADD_UEVENT_VAR diff --git a/include/linux/serio.h b/include/linux/serio.h index 36aac733840a..9f779c7a2da4 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -23,6 +23,7 @@ struct serio { char name[32]; char phys[32]; + char firmware_id[128]; bool manual_bind; From a7c5868c3482127cb308c779b8a6460a3353c17f Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 19 Apr 2014 20:47:35 -0700 Subject: [PATCH 189/623] Input: i8042 - add firmware_id support Fill in the new serio firmware_id sysfs attribute for pnp instantiated 8042 serio ports. Signed-off-by: Hans de Goede Acked-by: Peter Hutterer Signed-off-by: Dmitry Torokhov --- drivers/input/serio/i8042-x86ia64io.h | 15 +++++++++++++++ drivers/input/serio/i8042.c | 6 ++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 0ec9abbe31fe..381b20d4c561 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -702,6 +702,17 @@ static int i8042_pnp_aux_irq; static char i8042_pnp_kbd_name[32]; static char i8042_pnp_aux_name[32]; +static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size) +{ + strlcpy(dst, "PNP:", dst_size); + + while (id) { + strlcat(dst, " ", dst_size); + strlcat(dst, id->id, dst_size); + id = id->next; + } +} + static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did) { if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1) @@ -718,6 +729,8 @@ static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id * strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name)); strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name)); } + i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id, + sizeof(i8042_kbd_firmware_id)); /* Keyboard ports are always supposed to be wakeup-enabled */ device_set_wakeup_enable(&dev->dev, true); @@ -742,6 +755,8 @@ static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id * strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name)); strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name)); } + i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id, + sizeof(i8042_aux_firmware_id)); i8042_pnp_aux_devices++; return 0; diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 020053fa5aaa..3807c3e971cc 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -87,6 +87,8 @@ MODULE_PARM_DESC(debug, "Turn i8042 debugging mode on and off"); #endif static bool i8042_bypass_aux_irq_test; +static char i8042_kbd_firmware_id[128]; +static char i8042_aux_firmware_id[128]; #include "i8042.h" @@ -1218,6 +1220,8 @@ static int __init i8042_create_kbd_port(void) serio->dev.parent = &i8042_platform_device->dev; strlcpy(serio->name, "i8042 KBD port", sizeof(serio->name)); strlcpy(serio->phys, I8042_KBD_PHYS_DESC, sizeof(serio->phys)); + strlcpy(serio->firmware_id, i8042_kbd_firmware_id, + sizeof(serio->firmware_id)); port->serio = serio; port->irq = I8042_KBD_IRQ; @@ -1244,6 +1248,8 @@ static int __init i8042_create_aux_port(int idx) if (idx < 0) { strlcpy(serio->name, "i8042 AUX port", sizeof(serio->name)); strlcpy(serio->phys, I8042_AUX_PHYS_DESC, sizeof(serio->phys)); + strlcpy(serio->firmware_id, i8042_aux_firmware_id, + sizeof(serio->firmware_id)); serio->close = i8042_port_close; } else { snprintf(serio->name, sizeof(serio->name), "i8042 AUX%d port", idx); From f37c013409bb78ebb958821aa10d069e707cabac Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 19 Apr 2014 22:25:45 -0700 Subject: [PATCH 190/623] Input: Add INPUT_PROP_TOPBUTTONPAD device property On some newer laptops with a trackpoint the physical buttons for the trackpoint have been removed to allow for a larger touchpad. On these laptops the buttonpad has clearly marked areas on the top which are to be used as trackpad buttons. Users of the event device-node need to know about this, so that they can properly interpret BTN_LEFT events as being a left / right / middle click depending on where on the button pad the clicking finger is. This commits adds a INPUT_PROP_TOPBUTTONPAD device property which drivers for such buttonpads will use to signal to the user that this buttonpad not only has the normal bottom button area, but also a top button area. Signed-off-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- include/uapi/linux/input.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h index bd24470d24a2..f4849525519c 100644 --- a/include/uapi/linux/input.h +++ b/include/uapi/linux/input.h @@ -164,6 +164,7 @@ struct input_keymap_entry { #define INPUT_PROP_DIRECT 0x01 /* direct input devices */ #define INPUT_PROP_BUTTONPAD 0x02 /* has button(s) under pad */ #define INPUT_PROP_SEMI_MT 0x03 /* touch rectangle only */ +#define INPUT_PROP_TOPBUTTONPAD 0x04 /* softbuttons at top of pad */ #define INPUT_PROP_MAX 0x1f #define INPUT_PROP_CNT (INPUT_PROP_MAX + 1) From 43e19888b1fe2a3e8a5543030c5b286cde38b3f5 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 19 Apr 2014 22:26:41 -0700 Subject: [PATCH 191/623] Input: synaptics - report INPUT_PROP_TOPBUTTONPAD property Check PNP ID of the PS/2 AUX port and report INPUT_PROP_TOPBUTTONPAD property for for touchpads with top button areas. Signed-off-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics.c | 55 +++++++++++++++++++++++++++++++-- 1 file changed, 53 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index d8d49d10f9bb..9d754103337d 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -117,6 +117,44 @@ void synaptics_reset(struct psmouse *psmouse) } #ifdef CONFIG_MOUSE_PS2_SYNAPTICS +/* This list has been kindly provided by Synaptics. */ +static const char * const topbuttonpad_pnp_ids[] = { + "LEN0017", + "LEN0018", + "LEN0019", + "LEN0023", + "LEN002A", + "LEN002B", + "LEN002C", + "LEN002D", + "LEN002E", + "LEN0033", /* Helix */ + "LEN0034", /* T431s, T540, X1 Carbon 2nd */ + "LEN0035", /* X240 */ + "LEN0036", /* T440 */ + "LEN0037", + "LEN0038", + "LEN0041", + "LEN0042", /* Yoga */ + "LEN0045", + "LEN0046", + "LEN0047", + "LEN0048", + "LEN0049", + "LEN2000", + "LEN2001", + "LEN2002", + "LEN2003", + "LEN2004", /* L440 */ + "LEN2005", + "LEN2006", + "LEN2007", + "LEN2008", + "LEN2009", + "LEN200A", + "LEN200B", + NULL +}; /***************************************************************************** * Synaptics communications functions @@ -1255,8 +1293,10 @@ static void set_abs_position_params(struct input_dev *dev, input_abs_set_res(dev, y_code, priv->y_res); } -static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) +static void set_input_params(struct psmouse *psmouse, + struct synaptics_data *priv) { + struct input_dev *dev = psmouse->dev; int i; /* Things that apply to both modes */ @@ -1325,6 +1365,17 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv) if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) { __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); + /* See if this buttonpad has a top button area */ + if (!strncmp(psmouse->ps2dev.serio->firmware_id, "PNP:", 4)) { + for (i = 0; topbuttonpad_pnp_ids[i]; i++) { + if (strstr(psmouse->ps2dev.serio->firmware_id, + topbuttonpad_pnp_ids[i])) { + __set_bit(INPUT_PROP_TOPBUTTONPAD, + dev->propbit); + break; + } + } + } /* Clickpads report only left button */ __clear_bit(BTN_RIGHT, dev->keybit); __clear_bit(BTN_MIDDLE, dev->keybit); @@ -1593,7 +1644,7 @@ static int __synaptics_init(struct psmouse *psmouse, bool absolute_mode) priv->capabilities, priv->ext_cap, priv->ext_cap_0c, priv->board_id, priv->firmware_id); - set_input_params(psmouse->dev, priv); + set_input_params(psmouse, priv); /* * Encode touchpad model so that it can be used to set From 46a2986ebbe18757c2d8c352f8fb6e0f4f0754e3 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 19 Apr 2014 22:31:18 -0700 Subject: [PATCH 192/623] Input: synaptics - add min/max quirk for ThinkPad T431s, L440, L540, S1 Yoga and X1 We expect that all the Haswell series will need such quirks, sigh. The T431s seems to be T430 hardware in a T440s case, using the T440s touchpad, with the same min/max issue. The X1 Carbon 3rd generation name says 2nd while it is a 3rd generation. The X1 and T431s share a PnPID with the T540p, but the reported ranges are closer to those of the T440s. HdG: Squashed 5 quirk patches into one. T431s + L440 + L540 are written by me, S1 Yoga and X1 are written by Benjamin Tissoires. Hdg: Standardized S1 Yoga and X1 values, Yoga uses the same touchpad as the X240, X1 uses the same touchpad as the T440. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires Signed-off-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics.c | 42 +++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 9d754103337d..ef9f4913450d 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -1565,6 +1565,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = { }, .driver_data = (int []){1232, 5710, 1156, 4696}, }, + { + /* Lenovo ThinkPad T431s */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T431"), + }, + .driver_data = (int []){1024, 5112, 2024, 4832}, + }, { /* Lenovo ThinkPad T440s */ .matches = { @@ -1573,6 +1581,14 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = { }, .driver_data = (int []){1024, 5112, 2024, 4832}, }, + { + /* Lenovo ThinkPad L440 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L440"), + }, + .driver_data = (int []){1024, 5112, 2024, 4832}, + }, { /* Lenovo ThinkPad T540p */ .matches = { @@ -1581,6 +1597,32 @@ static const struct dmi_system_id min_max_dmi_table[] __initconst = { }, .driver_data = (int []){1024, 5056, 2058, 4832}, }, + { + /* Lenovo ThinkPad L540 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L540"), + }, + .driver_data = (int []){1024, 5112, 2024, 4832}, + }, + { + /* Lenovo Yoga S1 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, + "ThinkPad S1 Yoga"), + }, + .driver_data = (int []){1232, 5710, 1156, 4696}, + }, + { + /* Lenovo ThinkPad X1 Carbon Haswell (3rd generation) */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, + "ThinkPad X1 Carbon 2nd"), + }, + .driver_data = (int []){1024, 5112, 2024, 4832}, + }, #endif { } }; From c2fb3094669a3205f16a32f4119d0afe40b1a1fd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20K=C3=B6nig?= Date: Sun, 20 Apr 2014 13:24:32 +0200 Subject: [PATCH 193/623] drm/radeon: improve PLL limit handling in post div calculation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This improves the PLL parameters when we work at the limits of the allowed ranges. Signed-off-by: Christian König --- drivers/gpu/drm/radeon/radeon_display.c | 77 ++++++++++++++++--------- 1 file changed, 51 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index e6c3c5488259..8d99d5ee8014 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -839,6 +839,38 @@ static void avivo_reduce_ratio(unsigned *nom, unsigned *den, } } +/** + * avivo_get_fb_ref_div - feedback and ref divider calculation + * + * @nom: nominator + * @den: denominator + * @post_div: post divider + * @fb_div_max: feedback divider maximum + * @ref_div_max: reference divider maximum + * @fb_div: resulting feedback divider + * @ref_div: resulting reference divider + * + * Calculate feedback and reference divider for a given post divider. Makes + * sure we stay within the limits. + */ +static void avivo_get_fb_ref_div(unsigned nom, unsigned den, unsigned post_div, + unsigned fb_div_max, unsigned ref_div_max, + unsigned *fb_div, unsigned *ref_div) +{ + /* limit reference * post divider to a maximum */ + ref_div_max = min(210 / post_div, ref_div_max); + + /* get matching reference and feedback divider */ + *ref_div = min(max(DIV_ROUND_CLOSEST(den, post_div), 1u), ref_div_max); + *fb_div = DIV_ROUND_CLOSEST(nom * *ref_div * post_div, den); + + /* limit fb divider to its maximum */ + if (*fb_div > fb_div_max) { + *ref_div = DIV_ROUND_CLOSEST(*ref_div * fb_div_max, *fb_div); + *fb_div = fb_div_max; + } +} + /** * radeon_compute_pll_avivo - compute PLL paramaters * @@ -860,6 +892,9 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, u32 *ref_div_p, u32 *post_div_p) { + unsigned target_clock = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ? + freq : freq / 10; + unsigned fb_div_min, fb_div_max, fb_div; unsigned post_div_min, post_div_max, post_div; unsigned ref_div_min, ref_div_max, ref_div; @@ -892,7 +927,6 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, post_div_min = pll->post_div; post_div_max = pll->post_div; } else { - unsigned target_clock = freq / 10; unsigned vco_min, vco_max; if (pll->flags & RADEON_PLL_IS_LCD) { @@ -903,6 +937,11 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, vco_max = pll->pll_out_max; } + if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) { + vco_min *= 10; + vco_max *= 10; + } + post_div_min = vco_min / target_clock; if ((target_clock * post_div_min) < vco_min) ++post_div_min; @@ -917,7 +956,7 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, } /* represent the searched ratio as fractional number */ - nom = pll->flags & RADEON_PLL_USE_FRAC_FB_DIV ? freq : freq / 10; + nom = target_clock; den = pll->reference_freq; /* reduce the numbers to a simpler ratio */ @@ -931,7 +970,12 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, diff_best = ~0; for (post_div = post_div_min; post_div <= post_div_max; ++post_div) { - unsigned diff = abs(den - den / post_div * post_div); + unsigned diff; + avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, + ref_div_max, &fb_div, &ref_div); + diff = abs(target_clock - (pll->reference_freq * fb_div) / + (ref_div * post_div)); + if (diff < diff_best || (diff == diff_best && !(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) { @@ -941,28 +985,9 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, } post_div = post_div_best; - /* limit reference * post divider to a maximum */ - ref_div_max = min(210 / post_div, ref_div_max); - - /* get matching reference and feedback divider */ - ref_div = max(DIV_ROUND_CLOSEST(den, post_div), 1u); - fb_div = DIV_ROUND_CLOSEST(nom * ref_div * post_div, den); - - /* we're almost done, but reference and feedback - divider might be to large now */ - - nom = fb_div; - den = ref_div; - - if (fb_div > fb_div_max) { - ref_div = DIV_ROUND_CLOSEST(den * fb_div_max, nom); - fb_div = fb_div_max; - } - - if (ref_div > ref_div_max) { - ref_div = ref_div_max; - fb_div = DIV_ROUND_CLOSEST(nom * ref_div_max, den); - } + /* get the feedback and reference divider for the optimal value */ + avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max, + &fb_div, &ref_div); /* reduce the numbers to a simpler ratio once more */ /* this also makes sure that the reference divider is large enough */ @@ -984,7 +1009,7 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll, *post_div_p = post_div; DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n", - freq, *dot_clock_p, *fb_div_p, *frac_fb_div_p, + freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p, ref_div, post_div); } From a798c10faf62a505d24e5f6213fbaf904a39623f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 20 Apr 2014 11:08:50 -0700 Subject: [PATCH 194/623] Linux 3.15-rc2 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 60ccbfe750a2..80a2d2448531 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 15 SUBLEVEL = 0 -EXTRAVERSION = -rc1 +EXTRAVERSION = -rc2 NAME = Shuffling Zombie Juror # *DOCUMENTATION* From da343fc776e0bcb238b65d9d24610819b95d0ef4 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Fri, 18 Apr 2014 14:19:47 +0200 Subject: [PATCH 195/623] irqchip: armada-370-xp: fix invalid cast of signed value into unsigned variable The armada_370_xp_alloc_msi() function returns a signed int, which is negative on error. However, we store the return value into an irq_hw_number_t, which is unsigned. Therefore, we actually never test if armada_370_xp_alloc_msi() returns an error or not, which may lead us to use hwirq numbers of as 0xffffffe4 (when armada_370_xp_alloc_msi() returns -ENOSPC). This commit fixes that by storing the return value of armada_370_xp_alloc_msi() in a signed variable. Fixes: 31f614edb726fcc4d5aa0f2895fbdec9b04a3ca4 ('irqchip: armada-370-xp: implement MSI support') Cc: # v3.13+ Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1397823593-1932-2-git-send-email-thomas.petazzoni@free-electrons.com Tested-by: Neil Greatorex Signed-off-by: Jason Cooper --- drivers/irqchip/irq-armada-370-xp.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 41be897df8d5..3c8d89b62a21 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -132,8 +132,7 @@ static int armada_370_xp_setup_msi_irq(struct msi_chip *chip, struct msi_desc *desc) { struct msi_msg msg; - irq_hw_number_t hwirq; - int virq; + int virq, hwirq; hwirq = armada_370_xp_alloc_msi(); if (hwirq < 0) From 830cbe4b7a918613276aa3d3b28d24410623f92c Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Fri, 18 Apr 2014 14:19:48 +0200 Subject: [PATCH 196/623] irqchip: armada-370-xp: implement the ->check_device() msi_chip operation Until now, we were leaving the ->check_device() msi_chip operation empty, which leads the PCI core to believe that we support both MSI and MSI-X. In fact, we do not support MSI-X, so we have to tell this to the PCI core by providing an implementation of this operation. Fixes: 31f614edb726fcc4d5aa0f2895fbdec9b04a3ca4 ('irqchip: armada-370-xp: implement MSI support') Cc: # v3.13+ Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1397823593-1932-3-git-send-email-thomas.petazzoni@free-electrons.com Tested-by: Neil Greatorex Signed-off-by: Jason Cooper --- drivers/irqchip/irq-armada-370-xp.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 3c8d89b62a21..78b0ac9129d7 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -162,6 +162,15 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip, armada_370_xp_free_msi(d->hwirq); } +static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev, + int nvec, int type) +{ + /* We support MSI, but not MSI-X */ + if (type == PCI_CAP_ID_MSI) + return 0; + return -EINVAL; +} + static struct irq_chip armada_370_xp_msi_irq_chip = { .name = "armada_370_xp_msi_irq", .irq_enable = unmask_msi_irq, @@ -200,6 +209,7 @@ static int armada_370_xp_msi_init(struct device_node *node, msi_chip->setup_irq = armada_370_xp_setup_msi_irq; msi_chip->teardown_irq = armada_370_xp_teardown_msi_irq; + msi_chip->check_device = armada_370_xp_check_msi_device; msi_chip->of_node = node; armada_370_xp_msi_domain = From ff3c664505bf8a8334bca5045e87b85cfe4d2277 Mon Sep 17 00:00:00 2001 From: Neil Greatorex Date: Fri, 18 Apr 2014 14:19:49 +0200 Subject: [PATCH 197/623] irqchip: armada-370-xp: Fix releasing of MSIs Store the value of d->hwirq in a local variable as the real value is wiped out by calling irq_dispose_mapping. Without this patch, the armada_370_xp_free_msi function would always free MSI#0, no matter what was passed to it. Fixes: 31f614edb726fcc4d5aa0f2895fbdec9b04a3ca4 ('irqchip: armada-370-xp: implement MSI support') Cc: # v3.13+ Signed-off-by: Neil Greatorex Link: https://lkml.kernel.org/r/1397823593-1932-4-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1397823593-1932-4-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper --- drivers/irqchip/irq-armada-370-xp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 78b0ac9129d7..868d11bc00d2 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -158,8 +158,10 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip, unsigned int irq) { struct irq_data *d = irq_get_irq_data(irq); + unsigned long hwirq = d->hwirq; + irq_dispose_mapping(irq); - armada_370_xp_free_msi(d->hwirq); + armada_370_xp_free_msi(hwirq); } static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev, From 0d71832e3004a0833938cc28a096823cd55b8e79 Mon Sep 17 00:00:00 2001 From: Tristan Schmelcher Date: Mon, 11 Nov 2013 13:03:06 -0500 Subject: [PATCH 198/623] uml: Simplify tempdir logic. Inferring the mount hierarchy correctly from /proc/mounts is hard when MS_MOVE may have been used, and the previous code did it wrongly. This change simplifies the logic to only require that /dev/shm be _on_ tmpfs (which can be checked trivially with statfs) rather than that it be a _mountpoint_ of tmpfs, since there isn't a compelling reason to be that strict. We also now check for tmpfs on whatever directory we ultimately use so that the user is better informed. This change also moves the more standard TMPDIR environment variable check ahead of the others. Applies to 3.12. Signed-off-by: Tristan Schmelcher Signed-off-by: Richard Weinberger --- arch/um/os-Linux/mem.c | 400 +++++++++-------------------------------- 1 file changed, 89 insertions(+), 311 deletions(-) diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index 3c4af77e51a2..897e9ad0c108 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -12,337 +12,117 @@ #include #include #include -#include +#include +#include #include #include -/* Modified by which_tmpdir, which is called during early boot */ -static char *default_tmpdir = "/tmp"; - -/* - * Modified when creating the physical memory file and when checking - * the tmp filesystem for usability, both happening during early boot. - */ +/* Set by make_tempfile() during early boot. */ static char *tempdir = NULL; -static void __init find_tempdir(void) +/* Check if dir is on tmpfs. Return 0 if yes, -1 if no or error. */ +static int __init check_tmpfs(const char *dir) { - const char *dirs[] = { "TMP", "TEMP", "TMPDIR", NULL }; - int i; - char *dir = NULL; + struct statfs st; - if (tempdir != NULL) - /* We've already been called */ - return; - for (i = 0; dirs[i]; i++) { - dir = getenv(dirs[i]); - if ((dir != NULL) && (*dir != '\0')) - break; - } - if ((dir == NULL) || (*dir == '\0')) - dir = default_tmpdir; - - tempdir = malloc(strlen(dir) + 2); - if (tempdir == NULL) { - fprintf(stderr, "Failed to malloc tempdir, " - "errno = %d\n", errno); - return; - } - strcpy(tempdir, dir); - strcat(tempdir, "/"); -} - -/* - * Remove bytes from the front of the buffer and refill it so that if there's a - * partial string that we care about, it will be completed, and we can recognize - * it. - */ -static int pop(int fd, char *buf, size_t size, size_t npop) -{ - ssize_t n; - size_t len = strlen(&buf[npop]); - - memmove(buf, &buf[npop], len + 1); - n = read(fd, &buf[len], size - len - 1); - if (n < 0) - return -errno; - - buf[len + n] = '\0'; - return 1; -} - -/* - * This will return 1, with the first character in buf being the - * character following the next instance of c in the file. This will - * read the file as needed. If there's an error, -errno is returned; - * if the end of the file is reached, 0 is returned. - */ -static int next(int fd, char *buf, size_t size, char c) -{ - ssize_t n; - char *ptr; - - while ((ptr = strchr(buf, c)) == NULL) { - n = read(fd, buf, size - 1); - if (n == 0) - return 0; - else if (n < 0) - return -errno; - - buf[n] = '\0'; - } - - return pop(fd, buf, size, ptr - buf + 1); -} - -/* - * Decode an octal-escaped and space-terminated path of the form used by - * /proc/mounts. May be used to decode a path in-place. "out" must be at least - * as large as the input. The output is always null-terminated. "len" gets the - * length of the output, excluding the trailing null. Returns 0 if a full path - * was successfully decoded, otherwise an error. - */ -static int decode_path(const char *in, char *out, size_t *len) -{ - char *first = out; - int c; - int i; - int ret = -EINVAL; - while (1) { - switch (*in) { - case '\0': - goto out; - - case ' ': - ret = 0; - goto out; - - case '\\': - in++; - c = 0; - for (i = 0; i < 3; i++) { - if (*in < '0' || *in > '7') - goto out; - c = (c << 3) | (*in++ - '0'); - } - *(unsigned char *)out++ = (unsigned char) c; - break; - - default: - *out++ = *in++; - break; - } - } - -out: - *out = '\0'; - *len = out - first; - return ret; -} - -/* - * Computes the length of s when encoded with three-digit octal escape sequences - * for the characters in chars. - */ -static size_t octal_encoded_length(const char *s, const char *chars) -{ - size_t len = strlen(s); - while ((s = strpbrk(s, chars)) != NULL) { - len += 3; - s++; - } - - return len; -} - -enum { - OUTCOME_NOTHING_MOUNTED, - OUTCOME_TMPFS_MOUNT, - OUTCOME_NON_TMPFS_MOUNT, -}; - -/* Read a line of /proc/mounts data looking for a tmpfs mount at "path". */ -static int read_mount(int fd, char *buf, size_t bufsize, const char *path, - int *outcome) -{ - int found; - int match; - char *space; - size_t len; - - enum { - MATCH_NONE, - MATCH_EXACT, - MATCH_PARENT, - }; - - found = next(fd, buf, bufsize, ' '); - if (found != 1) - return found; - - /* - * If there's no following space in the buffer, then this path is - * truncated, so it can't be the one we're looking for. - */ - space = strchr(buf, ' '); - if (space) { - match = MATCH_NONE; - if (!decode_path(buf, buf, &len)) { - if (!strcmp(buf, path)) - match = MATCH_EXACT; - else if (!strncmp(buf, path, len) - && (path[len] == '/' || !strcmp(buf, "/"))) - match = MATCH_PARENT; - } - - found = pop(fd, buf, bufsize, space - buf + 1); - if (found != 1) - return found; - - switch (match) { - case MATCH_EXACT: - if (!strncmp(buf, "tmpfs", strlen("tmpfs"))) - *outcome = OUTCOME_TMPFS_MOUNT; - else - *outcome = OUTCOME_NON_TMPFS_MOUNT; - break; - - case MATCH_PARENT: - /* This mount obscures any previous ones. */ - *outcome = OUTCOME_NOTHING_MOUNTED; - break; - } - } - - return next(fd, buf, bufsize, '\n'); -} - -/* which_tmpdir is called only during early boot */ -static int checked_tmpdir = 0; - -/* - * Look for a tmpfs mounted at /dev/shm. I couldn't find a cleaner - * way to do this than to parse /proc/mounts. statfs will return the - * same filesystem magic number and fs id for both /dev and /dev/shm - * when they are both tmpfs, so you can't tell if they are different - * filesystems. Also, there seems to be no other way of finding the - * mount point of a filesystem from within it. - * - * If a /dev/shm tmpfs entry is found, then we switch to using it. - * Otherwise, we stay with the default /tmp. - */ -static void which_tmpdir(void) -{ - int fd; - int found; - int outcome; - char *path; - char *buf; - size_t bufsize; - - if (checked_tmpdir) - return; - - checked_tmpdir = 1; - - printf("Checking for tmpfs mount on /dev/shm..."); - - path = realpath("/dev/shm", NULL); - if (!path) { - printf("failed to check real path, errno = %d\n", errno); - return; - } - printf("%s...", path); - - /* - * The buffer needs to be able to fit the full octal-escaped path, a - * space, and a trailing null in order to successfully decode it. - */ - bufsize = octal_encoded_length(path, " \t\n\\") + 2; - - if (bufsize < 128) - bufsize = 128; - - buf = malloc(bufsize); - if (!buf) { - printf("malloc failed, errno = %d\n", errno); - goto out; - } - buf[0] = '\0'; - - fd = open("/proc/mounts", O_RDONLY); - if (fd < 0) { - printf("failed to open /proc/mounts, errno = %d\n", errno); - goto out1; - } - - outcome = OUTCOME_NOTHING_MOUNTED; - while (1) { - found = read_mount(fd, buf, bufsize, path, &outcome); - if (found != 1) - break; - } - - if (found < 0) { - printf("read returned errno %d\n", -found); + printf("Checking if %s is on tmpfs...", dir); + if (statfs(dir, &st) < 0) { + printf("%s\n", strerror(errno)); + } else if (st.f_type != TMPFS_MAGIC) { + printf("no\n"); } else { - switch (outcome) { - case OUTCOME_TMPFS_MOUNT: - printf("OK\n"); - default_tmpdir = "/dev/shm"; - break; - - case OUTCOME_NON_TMPFS_MOUNT: - printf("not tmpfs\n"); - break; - - default: - printf("nothing mounted on /dev/shm\n"); - break; - } + printf("OK\n"); + return 0; } - - close(fd); -out1: - free(buf); -out: - free(path); + return -1; } -static int __init make_tempfile(const char *template, char **out_tempname, - int do_unlink) +/* + * Choose the tempdir to use. We want something on tmpfs so that our memory is + * not subject to the host's vm.dirty_ratio. If a tempdir is specified in the + * environment, we use that even if it's not on tmpfs, but we warn the user. + * Otherwise, we try common tmpfs locations, and if no tmpfs directory is found + * then we fall back to /tmp. + */ +static char * __init choose_tempdir(void) +{ + static const char * const vars[] = { + "TMPDIR", + "TMP", + "TEMP", + NULL + }; + static const char fallback_dir[] = "/tmp"; + static const char * const tmpfs_dirs[] = { + "/dev/shm", + fallback_dir, + NULL + }; + int i; + const char *dir; + + printf("Checking environment variables for a tempdir..."); + for (i = 0; vars[i]; i++) { + dir = getenv(vars[i]); + if ((dir != NULL) && (*dir != '\0')) { + printf("%s\n", dir); + if (check_tmpfs(dir) >= 0) + goto done; + else + goto warn; + } + } + printf("none found\n"); + + for (i = 0; tmpfs_dirs[i]; i++) { + dir = tmpfs_dirs[i]; + if (check_tmpfs(dir) >= 0) + goto done; + } + + dir = fallback_dir; +warn: + printf("Warning: tempdir %s is not on tmpfs\n", dir); +done: + /* Make a copy since getenv results may not remain valid forever. */ + return strdup(dir); +} + +/* + * Create an unlinked tempfile in a suitable tempdir. template must be the + * basename part of the template with a leading '/'. + */ +static int __init make_tempfile(const char *template) { char *tempname; int fd; - which_tmpdir(); - tempname = malloc(MAXPATHLEN); + if (tempdir == NULL) { + tempdir = choose_tempdir(); + if (tempdir == NULL) { + fprintf(stderr, "Failed to choose tempdir: %s\n", + strerror(errno)); + return -1; + } + } + + tempname = malloc(strlen(tempdir) + strlen(template) + 1); if (tempname == NULL) return -1; - find_tempdir(); - if ((tempdir == NULL) || (strlen(tempdir) >= MAXPATHLEN)) - goto out; - - if (template[0] != '/') - strcpy(tempname, tempdir); - else - tempname[0] = '\0'; - strncat(tempname, template, MAXPATHLEN-1-strlen(tempname)); + strcpy(tempname, tempdir); + strcat(tempname, template); fd = mkstemp(tempname); if (fd < 0) { fprintf(stderr, "open - cannot create %s: %s\n", tempname, strerror(errno)); goto out; } - if (do_unlink && (unlink(tempname) < 0)) { + if (unlink(tempname) < 0) { perror("unlink"); goto close; } - if (out_tempname) { - *out_tempname = tempname; - } else - free(tempname); + free(tempname); return fd; close: close(fd); @@ -351,14 +131,14 @@ out: return -1; } -#define TEMPNAME_TEMPLATE "vm_file-XXXXXX" +#define TEMPNAME_TEMPLATE "/vm_file-XXXXXX" static int __init create_tmp_file(unsigned long long len) { int fd, err; char zero; - fd = make_tempfile(TEMPNAME_TEMPLATE, NULL, 1); + fd = make_tempfile(TEMPNAME_TEMPLATE); if (fd < 0) exit(1); @@ -402,7 +182,6 @@ int __init create_mem_file(unsigned long long len) return fd; } - void __init check_tmpexec(void) { void *addr; @@ -410,14 +189,13 @@ void __init check_tmpexec(void) addr = mmap(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE, fd, 0); - printf("Checking PROT_EXEC mmap in %s...",tempdir); - fflush(stdout); + printf("Checking PROT_EXEC mmap in %s...", tempdir); if (addr == MAP_FAILED) { err = errno; - perror("failed"); + printf("%s\n", strerror(err)); close(fd); if (err == EPERM) - printf("%s must be not mounted noexec\n",tempdir); + printf("%s must be not mounted noexec\n", tempdir); exit(1); } printf("OK\n"); From 9fcb663be42e4727c1beabc7c80e2d839199e6b1 Mon Sep 17 00:00:00 2001 From: Anton Ivanov Date: Fri, 7 Mar 2014 18:37:46 +0000 Subject: [PATCH 199/623] um: Missing pipe handling UML does not handle sigpipe. As a result when running it under expect or redirecting the IO from the console to an external program it will crash if the program stops or exits. Signed-off-by: Anton Ivanov Signed-off-by: Richard Weinberger --- arch/um/os-Linux/main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index e1704ff600ff..df9191acd926 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -151,6 +151,7 @@ int __init main(int argc, char **argv, char **envp) #endif do_uml_initcalls(); + change_sig(SIGPIPE, 0); ret = linux_main(argc, argv); /* From 0565103d1adbd765ca45248d04c327c076dd1571 Mon Sep 17 00:00:00 2001 From: Anton Ivanov Date: Fri, 7 Mar 2014 18:37:47 +0000 Subject: [PATCH 200/623] um: Memory corruption on startup The reverse case of this race (you must msync before read) is well known. This is the not so common one. It can be triggered only on systems which do a lot of task switching and only at UML startup. If you are starting 200+ UMLs ~ 0.5% will always die without this fix. Signed-off-by: Anton Ivanov [rw: minor whitespace fixes] Signed-off-by: Richard Weinberger --- arch/um/include/shared/os.h | 1 + arch/um/kernel/physmem.c | 1 + arch/um/os-Linux/file.c | 6 ++++++ 3 files changed, 8 insertions(+) diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index 75298d3358e7..08eec0b691b0 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -136,6 +136,7 @@ extern int os_ioctl_generic(int fd, unsigned int cmd, unsigned long arg); extern int os_get_ifname(int fd, char *namebuf); extern int os_set_slip(int fd); extern int os_mode_fd(int fd, int mode); +extern int os_fsync_file(int fd); extern int os_seek_file(int fd, unsigned long long offset); extern int os_open_file(const char *file, struct openflags flags, int mode); diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index f116db15d402..30fdd5d0067b 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -103,6 +103,7 @@ void __init setup_physmem(unsigned long start, unsigned long reserve_end, */ os_seek_file(physmem_fd, __pa(&__syscall_stub_start)); os_write_file(physmem_fd, &__syscall_stub_start, PAGE_SIZE); + os_fsync_file(physmem_fd); bootmap_size = init_bootmem(pfn, pfn + delta); free_bootmem(__pa(reserve_end) + bootmap_size, diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c index 07a750197bb0..08d90fba952c 100644 --- a/arch/um/os-Linux/file.c +++ b/arch/um/os-Linux/file.c @@ -237,6 +237,12 @@ void os_close_file(int fd) { close(fd); } +int os_fsync_file(int fd) +{ + if (fsync(fd) < 0) + return -errno; + return 0; +} int os_seek_file(int fd, unsigned long long offset) { From 2697e4fb9209dfe1d1b24c92d254158f63d4bc8e Mon Sep 17 00:00:00 2001 From: Jarkko Nikula Date: Tue, 15 Apr 2014 16:58:09 +0300 Subject: [PATCH 201/623] ASoC: dapm: Fix widget double free with auto-disable DAPM kcontrol Commit 9e1fda4ae158 ("ASoC: dapm: Implement mixer input auto-disable") is trying to free the widget it allocated by snd_soc_dapm_new_control() call in dapm_kcontrol_data_alloc() by adding kfree(data->widget) to dapm_kcontrol_free(). This is causing a widget double free with auto-disabled DAPM kcontrols in sound card unregistration because widgets are already freed before dapm_kcontrol_free() is called. Reason for that is all widgets are added into dapm->card->widgets list in snd_soc_dapm_new_control() and freed in dapm_free_widgets() during execution of snd_soc_dapm_free(). Now snd_soc_dapm_free() calls for different DAPM contexts happens before snd_card_free() call from where the call chain to dapm_kcontrol_free() begins: soc_cleanup_card_resources() soc_remove_dai_links() soc_remove_link_dais() snd_soc_dapm_free(&cpu_dai->dapm) soc_remove_link_components() soc_remove_platform() snd_soc_dapm_free(&platform->dapm) soc_remove_codec() snd_soc_dapm_free(&codec->dapm) snd_soc_dapm_free(&card->dapm) snd_card_free() snd_card_do_free() snd_device_free_all() snd_device_free() snd_ctl_dev_free() snd_ctl_remove() snd_ctl_free_one() dapm_kcontrol_free() This wasn't making harm with ordinary DAPM kcontrols since data->widget is NULL for them. Fixes: 9e1fda4ae158 (ASoC: dapm: Implement mixer input auto-disable) Signed-off-by: Jarkko Nikula Acked-by: Lars-Peter Clausen Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/soc-dapm.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index c8a780d0d057..7769b0a2bc5a 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -254,7 +254,6 @@ static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget, static void dapm_kcontrol_free(struct snd_kcontrol *kctl) { struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl); - kfree(data->widget); kfree(data->wlist); kfree(data); } From 67c99a72e3006e4276e91d7282a3d6734fc77a0b Mon Sep 17 00:00:00 2001 From: "scameron@beardog.cce.hp.com" Date: Mon, 14 Apr 2014 14:01:09 -0500 Subject: [PATCH 202/623] [SCSI] hpsa: fix NULL dereference in hpsa_put_ctlr_into_performant_mode() Initialize local variable trans_support before it is used rather than after. It is supposed to contain the value of a register on the controller containing bits that describe which transport modes the controller supports (e.g. "performant", "ioaccel1", "ioaccel2"). A NULL pointer dereference will almost certainly occur if trans_support is not initialized at the right point. If for example the uninitialized trans_support value does not have the bit set for ioaccel2 support when it should be, then ioaccel2_alloc_cmds_and_bft() will not get called as it should be and the h->ioaccel2_blockFetchTable array will remain NULL instead of being allocated. Too late, trans_support finally gets initialized with the correct value with ioaccel2 mode bit set, which later causes calc_bucket_map() to be called to fill in h->ioaccel2_blockFetchTable[]. However h->ioaccel2_blockFetchTable is NULL because it didn't get allocated because earlier trans_support wasn't initialized at the right point. Fixes: e1f7de0cdd68d246d7008241cd9e443a54f880a8 Signed-off-by: Stephen M. Cameron Reported-by: Baoquan He Tested-by: Baoquan He Signed-off-by: James Bottomley --- drivers/scsi/hpsa.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 8cf4a0c69baf..9a6e4a2cd072 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -7463,6 +7463,10 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) if (hpsa_simple_mode) return; + trans_support = readl(&(h->cfgtable->TransportSupport)); + if (!(trans_support & PERFORMANT_MODE)) + return; + /* Check for I/O accelerator mode support */ if (trans_support & CFGTBL_Trans_io_accel1) { transMethod |= CFGTBL_Trans_io_accel1 | @@ -7479,10 +7483,6 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) } /* TODO, check that this next line h->nreply_queues is correct */ - trans_support = readl(&(h->cfgtable->TransportSupport)); - if (!(trans_support & PERFORMANT_MODE)) - return; - h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1; hpsa_get_max_perf_mode_cmds(h); /* Performant mode ring buffer and supporting data structures */ From 5e012aad85f2ee31d7de5c21d63ccd2702d63db2 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 15 Apr 2014 12:24:55 +0200 Subject: [PATCH 203/623] [SCSI] don't reference freed command in scsi_init_sgtable Patch commit 0479633686d370303e3430256ace4bd5f7f138dc Author: Christoph Hellwig Date: Thu Feb 20 14:20:55 2014 -0800 [SCSI] do not manipulate device reference counts in scsi_get/put_command Introduced a use after free: when scsi_init_io fails we have to release our device reference, but we do this trying to reference the just freed command. Add a local scsi_device pointer to fix this. Fixes: 0479633686d370303e3430256ace4bd5f7f138dc Reported-by: Sander Eikelenboom Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 65a123d9c676..54eff6a79fb8 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1044,6 +1044,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb, */ int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask) { + struct scsi_device *sdev = cmd->device; struct request *rq = cmd->request; int error = scsi_init_sgtable(rq, &cmd->sdb, gfp_mask); @@ -1091,7 +1092,7 @@ err_exit: scsi_release_buffers(cmd); cmd->request->special = NULL; scsi_put_command(cmd); - put_device(&cmd->device->sdev_gendev); + put_device(&sdev->sdev_gendev); return error; } EXPORT_SYMBOL(scsi_init_io); From 68c03d9193f55dad93036f439b94912c5003a173 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 15 Apr 2014 12:24:56 +0200 Subject: [PATCH 204/623] [SCSI] don't reference freed command in scsi_prep_return Patch commit 0479633686d370303e3430256ace4bd5f7f138dc Author: Christoph Hellwig Date: Thu Feb 20 14:20:55 2014 -0800 [SCSI] do not manipulate device reference counts in scsi_get/put_command Introduced a use after free:I in the kill case of scsi_prep_return we have to release our device reference, but we do this trying to reference the just freed command. Use the local sdev pointer instead. Fixes: 0479633686d370303e3430256ace4bd5f7f138dc Reported-by: Joe Lawrence Signed-off-by: Christoph Hellwig Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 54eff6a79fb8..7fa54fe51f63 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1274,7 +1274,7 @@ int scsi_prep_return(struct request_queue *q, struct request *req, int ret) struct scsi_cmnd *cmd = req->special; scsi_release_buffers(cmd); scsi_put_command(cmd); - put_device(&cmd->device->sdev_gendev); + put_device(&sdev->sdev_gendev); req->special = NULL; } break; From 9189a330936fe053d48e14c10a8d90aaef4408c9 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Apr 2014 10:15:12 -0500 Subject: [PATCH 205/623] Revert "usb: gadget: u_ether: move hardware transmit to RX NAPI" This reverts commit 716fb91dfe1777bd6d5e598f3d3572214b3ed296. That commit caused a regression which would end up in a kernel BUG() as below: [ 101.554300] g_ether gadget: full-speed config #1: CDC Subset/SAFE [ 101.585186] ------------[ cut here ]------------ [ 101.600587] kernel BUG at include/linux/netdevice.h:495! [ 101.615850] Internal error: Oops - BUG: 0 [#1] PREEMPT ARM [ 101.645539] Modules linked in: [ 101.660483] CPU: 0 PID: 0 Comm: swapper Not tainted 3.15.0-rc1+ #104 [ 101.690175] task: c05dc5c8 ti: c05d2000 task.ti: c05d2000 [ 101.705579] PC is at eth_start+0x64/0x8c [ 101.720981] LR is at __netif_schedule+0x7c/0x90 [ 101.736455] pc : [] lr : [] psr: 60000093 [ 101.736455] sp : c05d3d18 ip : c05d3cf8 fp : c05d3d2c [ 101.782340] r10: 00000000 r9 : c196c1f0 r8 : c196c1a0 [ 101.797823] r7 : 00000000 r6 : 00000002 r5 : c1976400 r4 : c1976400 [ 101.828058] r3 : 00000000 r2 : c05d3ce8 r1 : 00000001 r0 : 00000002 [ 101.858722] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel Reported-by: Robert Jarzmik Signed-of-by: Felipe Balbi --- drivers/usb/gadget/u_ether.c | 101 ++++++++++++----------------------- 1 file changed, 35 insertions(+), 66 deletions(-) diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index 50d09c289137..b7d4f82872b7 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -48,8 +48,6 @@ #define UETH__VERSION "29-May-2008" -#define GETHER_NAPI_WEIGHT 32 - struct eth_dev { /* lock is held while accessing port_usb */ @@ -74,7 +72,6 @@ struct eth_dev { struct sk_buff_head *list); struct work_struct work; - struct napi_struct rx_napi; unsigned long todo; #define WORK_RX_MEMORY 0 @@ -256,16 +253,18 @@ enomem: DBG(dev, "rx submit --> %d\n", retval); if (skb) dev_kfree_skb_any(skb); + spin_lock_irqsave(&dev->req_lock, flags); + list_add(&req->list, &dev->rx_reqs); + spin_unlock_irqrestore(&dev->req_lock, flags); } return retval; } static void rx_complete(struct usb_ep *ep, struct usb_request *req) { - struct sk_buff *skb = req->context; + struct sk_buff *skb = req->context, *skb2; struct eth_dev *dev = ep->driver_data; int status = req->status; - bool rx_queue = 0; switch (status) { @@ -289,8 +288,30 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req) } else { skb_queue_tail(&dev->rx_frames, skb); } - if (!status) - rx_queue = 1; + skb = NULL; + + skb2 = skb_dequeue(&dev->rx_frames); + while (skb2) { + if (status < 0 + || ETH_HLEN > skb2->len + || skb2->len > VLAN_ETH_FRAME_LEN) { + dev->net->stats.rx_errors++; + dev->net->stats.rx_length_errors++; + DBG(dev, "rx length %d\n", skb2->len); + dev_kfree_skb_any(skb2); + goto next_frame; + } + skb2->protocol = eth_type_trans(skb2, dev->net); + dev->net->stats.rx_packets++; + dev->net->stats.rx_bytes += skb2->len; + + /* no buffer copies needed, unless hardware can't + * use skb buffers. + */ + status = netif_rx(skb2); +next_frame: + skb2 = skb_dequeue(&dev->rx_frames); + } break; /* software-driven interface shutdown */ @@ -313,20 +334,22 @@ quiesce: /* FALLTHROUGH */ default: - rx_queue = 1; - dev_kfree_skb_any(skb); dev->net->stats.rx_errors++; DBG(dev, "rx status %d\n", status); break; } + if (skb) + dev_kfree_skb_any(skb); + if (!netif_running(dev->net)) { clean: spin_lock(&dev->req_lock); list_add(&req->list, &dev->rx_reqs); spin_unlock(&dev->req_lock); - - if (rx_queue && likely(napi_schedule_prep(&dev->rx_napi))) - __napi_schedule(&dev->rx_napi); + req = NULL; + } + if (req) + rx_submit(dev, req, GFP_ATOMIC); } static int prealloc(struct list_head *list, struct usb_ep *ep, unsigned n) @@ -391,24 +414,16 @@ static void rx_fill(struct eth_dev *dev, gfp_t gfp_flags) { struct usb_request *req; unsigned long flags; - int rx_counts = 0; /* fill unused rxq slots with some skb */ spin_lock_irqsave(&dev->req_lock, flags); while (!list_empty(&dev->rx_reqs)) { - - if (++rx_counts > qlen(dev->gadget, dev->qmult)) - break; - req = container_of(dev->rx_reqs.next, struct usb_request, list); list_del_init(&req->list); spin_unlock_irqrestore(&dev->req_lock, flags); if (rx_submit(dev, req, gfp_flags) < 0) { - spin_lock_irqsave(&dev->req_lock, flags); - list_add(&req->list, &dev->rx_reqs); - spin_unlock_irqrestore(&dev->req_lock, flags); defer_kevent(dev, WORK_RX_MEMORY); return; } @@ -418,41 +433,6 @@ static void rx_fill(struct eth_dev *dev, gfp_t gfp_flags) spin_unlock_irqrestore(&dev->req_lock, flags); } -static int gether_poll(struct napi_struct *napi, int budget) -{ - struct eth_dev *dev = container_of(napi, struct eth_dev, rx_napi); - struct sk_buff *skb; - unsigned int work_done = 0; - int status = 0; - - while ((skb = skb_dequeue(&dev->rx_frames))) { - if (status < 0 - || ETH_HLEN > skb->len - || skb->len > VLAN_ETH_FRAME_LEN) { - dev->net->stats.rx_errors++; - dev->net->stats.rx_length_errors++; - DBG(dev, "rx length %d\n", skb->len); - dev_kfree_skb_any(skb); - continue; - } - skb->protocol = eth_type_trans(skb, dev->net); - dev->net->stats.rx_packets++; - dev->net->stats.rx_bytes += skb->len; - - status = netif_rx_ni(skb); - } - - if (netif_running(dev->net)) { - rx_fill(dev, GFP_KERNEL); - work_done++; - } - - if (work_done < budget) - napi_complete(&dev->rx_napi); - - return work_done; -} - static void eth_work(struct work_struct *work) { struct eth_dev *dev = container_of(work, struct eth_dev, work); @@ -645,7 +625,6 @@ static void eth_start(struct eth_dev *dev, gfp_t gfp_flags) /* and open the tx floodgates */ atomic_set(&dev->tx_qlen, 0); netif_wake_queue(dev->net); - napi_enable(&dev->rx_napi); } static int eth_open(struct net_device *net) @@ -672,7 +651,6 @@ static int eth_stop(struct net_device *net) unsigned long flags; VDBG(dev, "%s\n", __func__); - napi_disable(&dev->rx_napi); netif_stop_queue(net); DBG(dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n", @@ -790,7 +768,6 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, return ERR_PTR(-ENOMEM); dev = netdev_priv(net); - netif_napi_add(net, &dev->rx_napi, gether_poll, GETHER_NAPI_WEIGHT); spin_lock_init(&dev->lock); spin_lock_init(&dev->req_lock); INIT_WORK(&dev->work, eth_work); @@ -853,7 +830,6 @@ struct net_device *gether_setup_name_default(const char *netname) return ERR_PTR(-ENOMEM); dev = netdev_priv(net); - netif_napi_add(net, &dev->rx_napi, gether_poll, GETHER_NAPI_WEIGHT); spin_lock_init(&dev->lock); spin_lock_init(&dev->req_lock); INIT_WORK(&dev->work, eth_work); @@ -1137,7 +1113,6 @@ void gether_disconnect(struct gether *link) { struct eth_dev *dev = link->ioport; struct usb_request *req; - struct sk_buff *skb; WARN_ON(!dev); if (!dev) @@ -1164,12 +1139,6 @@ void gether_disconnect(struct gether *link) spin_lock(&dev->req_lock); } spin_unlock(&dev->req_lock); - - spin_lock(&dev->rx_frames.lock); - while ((skb = __skb_dequeue(&dev->rx_frames))) - dev_kfree_skb_any(skb); - spin_unlock(&dev->rx_frames.lock); - link->in_ep->driver_data = NULL; link->in_ep->desc = NULL; From 2656c9e28125e96bee212f146cc3f2419fd3ffef Mon Sep 17 00:00:00 2001 From: Macpaul Lin Date: Tue, 15 Apr 2014 16:09:33 +0800 Subject: [PATCH 206/623] usb: gadget: f_rndis: reduce NETTX irq caused by free skb header This patch reduce unecessary NETTX softirq call caused by free skb header. You will see this softirq comes twice while there is only one TX packet to be transmitted. So using dev_kfree_skb() instead of dev_kfree_skb_any() to avoid this problem. Cc: David S. Miller Cc: Stephen Hemminger Cc: Greg Kroah-Hartman Signed-off-by: Macpaul Lin Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_rndis.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index c11761ce5113..9a4f49dc6ac4 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -377,7 +377,7 @@ static struct sk_buff *rndis_add_header(struct gether *port, if (skb2) rndis_add_hdr(skb2); - dev_kfree_skb_any(skb); + dev_kfree_skb(skb); return skb2; } From a31a942a148e0083ce560ffeb54fb60e06ab7201 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Wed, 16 Apr 2014 17:11:16 +0200 Subject: [PATCH 207/623] usb: phy: am335x-control: wait 1ms after power-up transitions Tests have shown that when a power-up transition is followed by other PHY operations too quickly, the USB port appears dead. Waiting 1ms fixes this problem. Signed-off-by: Daniel Mack Cc: stable@vger.kernel.org [3.14] Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-am335x-control.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/usb/phy/phy-am335x-control.c b/drivers/usb/phy/phy-am335x-control.c index d75196ad5f2f..35b6083b7999 100644 --- a/drivers/usb/phy/phy-am335x-control.c +++ b/drivers/usb/phy/phy-am335x-control.c @@ -3,6 +3,7 @@ #include #include #include +#include #include "am35x-phy-control.h" struct am335x_control_usb { @@ -86,6 +87,14 @@ static void am335x_phy_power(struct phy_control *phy_ctrl, u32 id, bool on) } writel(val, usb_ctrl->phy_reg + reg); + + /* + * Give the PHY ~1ms to complete the power up operation. + * Tests have shown unstable behaviour if other USB PHY related + * registers are written too shortly after such a transition. + */ + if (on) + mdelay(1); } static const struct phy_control ctrl_am335x = { From 75e4f206c97b7dbf1187c7b7b509bcb7a822767d Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Mon, 7 Apr 2014 15:16:54 +0200 Subject: [PATCH 208/623] tools/power/acpi: Minor bugfixes - bindir is created, but sbindir is used -> fix that - the debug parts are there twice (copy paste bug?). Remove one of the exact same parts Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki --- tools/power/acpi/Makefile | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile index d9186a2fdf06..c2c0f20067a5 100644 --- a/tools/power/acpi/Makefile +++ b/tools/power/acpi/Makefile @@ -89,15 +89,6 @@ else STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment endif -# if DEBUG is enabled, then we do not strip or optimize -ifeq ($(strip $(DEBUG)),true) - CFLAGS += -O1 -g -DDEBUG - STRIPCMD = /bin/true -Since_we_are_debugging -else - CFLAGS += $(OPTIMIZATION) -fomit-frame-pointer - STRIPCMD = $(STRIP) -s --remove-section=.note --remove-section=.comment -endif - # --- ACPIDUMP BEGIN --- vpath %.c \ @@ -128,7 +119,7 @@ clean: -rm -f $(OUTPUT)acpidump install-tools: - $(INSTALL) -d $(DESTDIR)${bindir} + $(INSTALL) -d $(DESTDIR)${sbindir} $(INSTALL_PROGRAM) $(OUTPUT)acpidump $(DESTDIR)${sbindir} install-man: From 6273f00e6ecbd60494a979033b7e5271a29a0436 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 16 Apr 2014 21:24:34 +0800 Subject: [PATCH 209/623] ACPICA: Fix buffer allocation issue for generic_serial_bus region accesses. The size of the buffer allocated for generic_serial_bus region access is not correct. This patch introduces acpi_ex_get_serial_access_length() to be invoked to obtain correct data buffer length. Signed-off-by: Lv Zheng Reported by: Lan Tianyu Acked-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/exfield.c | 104 +++++++++++++++++++++++++++++++--- 1 file changed, 97 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c index 68d97441432c..12878e1982f7 100644 --- a/drivers/acpi/acpica/exfield.c +++ b/drivers/acpi/acpica/exfield.c @@ -45,10 +45,71 @@ #include "accommon.h" #include "acdispat.h" #include "acinterp.h" +#include "amlcode.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME("exfield") +/* Local prototypes */ +static u32 +acpi_ex_get_serial_access_length(u32 accessor_type, u32 access_length); + +/******************************************************************************* + * + * FUNCTION: acpi_get_serial_access_bytes + * + * PARAMETERS: accessor_type - The type of the protocol indicated by region + * field access attributes + * access_length - The access length of the region field + * + * RETURN: Decoded access length + * + * DESCRIPTION: This routine returns the length of the generic_serial_bus + * protocol bytes + * + ******************************************************************************/ + +static u32 +acpi_ex_get_serial_access_length(u32 accessor_type, u32 access_length) +{ + u32 length; + + switch (accessor_type) { + case AML_FIELD_ATTRIB_QUICK: + + length = 0; + break; + + case AML_FIELD_ATTRIB_SEND_RCV: + case AML_FIELD_ATTRIB_BYTE: + + length = 1; + break; + + case AML_FIELD_ATTRIB_WORD: + case AML_FIELD_ATTRIB_WORD_CALL: + + length = 2; + break; + + case AML_FIELD_ATTRIB_MULTIBYTE: + case AML_FIELD_ATTRIB_RAW_BYTES: + case AML_FIELD_ATTRIB_RAW_PROCESS: + + length = access_length; + break; + + case AML_FIELD_ATTRIB_BLOCK: + case AML_FIELD_ATTRIB_BLOCK_CALL: + default: + + length = ACPI_GSBUS_BUFFER_SIZE; + break; + } + + return (length); +} + /******************************************************************************* * * FUNCTION: acpi_ex_read_data_from_field @@ -63,8 +124,9 @@ ACPI_MODULE_NAME("exfield") * Buffer, depending on the size of the field. * ******************************************************************************/ + acpi_status -acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, +acpi_ex_read_data_from_field(struct acpi_walk_state * walk_state, union acpi_operand_object *obj_desc, union acpi_operand_object **ret_buffer_desc) { @@ -73,6 +135,7 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, acpi_size length; void *buffer; u32 function; + u16 accessor_type; ACPI_FUNCTION_TRACE_PTR(ex_read_data_from_field, obj_desc); @@ -116,9 +179,22 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, ACPI_READ | (obj_desc->field.attribute << 16); } else if (obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) { - length = ACPI_GSBUS_BUFFER_SIZE; - function = - ACPI_READ | (obj_desc->field.attribute << 16); + accessor_type = obj_desc->field.attribute; + length = acpi_ex_get_serial_access_length(accessor_type, + obj_desc-> + field. + access_length); + + /* + * Add additional 2 bytes for modeled generic_serial_bus data buffer: + * typedef struct { + * BYTEStatus; // Byte 0 of the data buffer + * BYTELength; // Byte 1 of the data buffer + * BYTE[x-1]Data; // Bytes 2-x of the arbitrary length data buffer, + * } + */ + length += 2; + function = ACPI_READ | (accessor_type << 16); } else { /* IPMI */ length = ACPI_IPMI_BUFFER_SIZE; @@ -231,6 +307,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc, void *buffer; union acpi_operand_object *buffer_desc; u32 function; + u16 accessor_type; ACPI_FUNCTION_TRACE_PTR(ex_write_data_to_field, obj_desc); @@ -284,9 +361,22 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc, ACPI_WRITE | (obj_desc->field.attribute << 16); } else if (obj_desc->field.region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) { - length = ACPI_GSBUS_BUFFER_SIZE; - function = - ACPI_WRITE | (obj_desc->field.attribute << 16); + accessor_type = obj_desc->field.attribute; + length = acpi_ex_get_serial_access_length(accessor_type, + obj_desc-> + field. + access_length); + + /* + * Add additional 2 bytes for modeled generic_serial_bus data buffer: + * typedef struct { + * BYTEStatus; // Byte 0 of the data buffer + * BYTELength; // Byte 1 of the data buffer + * BYTE[x-1]Data; // Bytes 2-x of the arbitrary length data buffer, + * } + */ + length += 2; + function = ACPI_WRITE | (accessor_type << 16); } else { /* IPMI */ length = ACPI_IPMI_BUFFER_SIZE; From d555a2abf3481f81303d835046a5ec2c4fb3ca8e Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Fri, 28 Mar 2014 10:50:17 -0700 Subject: [PATCH 210/623] [SCSI] Fix spurious request sense in error handling We unconditionally execute scsi_eh_get_sense() to make sure all failed commands that should have sense attached, do. However, the routine forgets that some commands, because of the way they fail, will not have any sense code ... we should not bother them with a REQUEST_SENSE command. Fix this by testing to see if we actually got a CHECK_CONDITION return and skip asking for sense if we don't. Tested-by: Alan Stern Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 771c16bfdbac..d020149ea8d4 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -1157,6 +1157,15 @@ int scsi_eh_get_sense(struct list_head *work_q, __func__)); break; } + if (status_byte(scmd->result) != CHECK_CONDITION) + /* + * don't request sense if there's no check condition + * status because the error we're processing isn't one + * that has a sense code (and some devices get + * confused by sense requests out of the blue) + */ + continue; + SCSI_LOG_ERROR_RECOVERY(2, scmd_printk(KERN_INFO, scmd, "%s: requesting sense\n", current->comm)); From 644373a4219add42123df69c8b7ce6a918475ccd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 28 Mar 2014 10:51:15 -0700 Subject: [PATCH 211/623] [SCSI] Fix command result state propagation We're seeing a case where the contents of scmd->result isn't being reset after a SCSI command encounters an error, is resubmitted, times out and then gets handled. The error handler acts on the stale result of the previous error instead of the timeout. Fix this by properly zeroing the scmd->status before the command is resubmitted. Signed-off-by: Alan Stern Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 1 + drivers/scsi/scsi_lib.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index d020149ea8d4..2953bfa92da7 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -924,6 +924,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses, memset(scmd->cmnd, 0, BLK_MAX_CDB); memset(&scmd->sdb, 0, sizeof(scmd->sdb)); scmd->request->next_rq = NULL; + scmd->result = 0; if (sense_bytes) { scmd->sdb.length = min_t(unsigned, SCSI_SENSE_BUFFERSIZE, diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 7fa54fe51f63..9db097a28a74 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -137,6 +137,7 @@ static void __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy) * lock such that the kblockd_schedule_work() call happens * before blk_cleanup_queue() finishes. */ + cmd->result = 0; spin_lock_irqsave(q->queue_lock, flags); blk_requeue_request(q, cmd->request); kblockd_schedule_work(q, &device->requeue_work); From 7daf480483e60898f30e0a2a84fecada7a7cfac0 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 31 Mar 2014 16:37:34 +0200 Subject: [PATCH 212/623] [SCSI] Fix USB deadlock caused by SCSI error handling USB requires that every command be aborted first before we escalate to reset. In particular, USB will deadlock if we try to reset first before aborting the command. Unfortunately, the flag we use to tell if a command has already been aborted: SCSI_EH_ABORT_SCHEDULED is not cleared properly leading to cases where we can requeue a command with the flag set and proceed immediately to reset if it fails (thus causing USB to deadlock). Fix by clearing the SCSI_EH_ABORT_SCHEDULED flag if it has been set. Which means this will be the second time scsi_abort_command() has been called for the same command. IE the first abort went out, did its thing, but now the same command has timed out again. So this flag gets cleared, and scsi_abort_command() returns FAILED, and _no_ asynchronous abort is being scheduled. scsi_times_out() will then proceed to call scsi_eh_scmd_add(). But as we've cleared the SCSI_EH_ABORT_SCHEDULED flag the SCSI_EH_CANCEL_CMD flag will continue to be set, and the command will be aborted with the main SCSI EH routine. Reported-by: Alan Stern Tested-by: Andreas Reis Signed-off-by: Hannes Reinecke Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 2953bfa92da7..ad064d2d730b 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -189,6 +189,7 @@ scsi_abort_command(struct scsi_cmnd *scmd) /* * Retry after abort failed, escalate to next level. */ + scmd->eh_eflags &= ~SCSI_EH_ABORT_SCHEDULED; SCSI_LOG_ERROR_RECOVERY(3, scmd_printk(KERN_INFO, scmd, "scmd %p previous abort failed\n", scmd)); From c69e6f812bab0d5442b40e2f1bfbca48d40bc50b Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 10 Apr 2014 13:36:11 -0700 Subject: [PATCH 213/623] [SCSI] More USB deadlock fixes This patch fixes a corner case in the previous USB Deadlock fix patch (12023e7 [SCSI] Fix USB deadlock caused by SCSI error handling). The scenario is abort command, set flag, abort completes, send TUR, TUR doesn't return, so we now try to abort the TUR, but scsi_abort_eh_cmnd() will skip the abort because the flag is set and move straight to reset. Reviewed-by: Hannes Reinecke Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index ad064d2d730b..f17aa7aa7879 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -921,6 +921,7 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses, ses->prot_op = scmd->prot_op; scmd->prot_op = SCSI_PROT_NORMAL; + scmd->eh_eflags = 0; scmd->cmnd = ses->eh_cmnd; memset(scmd->cmnd, 0, BLK_MAX_CDB); memset(&scmd->sdb, 0, sizeof(scmd->sdb)); From d27dca4217eb4cbdc3d33ad8c07799dd184873b9 Mon Sep 17 00:00:00 2001 From: Christoph Jaeger Date: Sat, 12 Apr 2014 19:57:30 +0200 Subject: [PATCH 214/623] intel_idle: fix IVT idle state table setting Ivy Town idle state table will not be set as intended. Fix it. Picked up by Coverity - CID 1201420/1201421. Fixes: 0138d8f075 ("intel_idle: fine-tune IVT residency targets") Signed-off-by: Christoph Jaeger Signed-off-by: Rafael J. Wysocki --- drivers/idle/intel_idle.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index a43220c2e3d9..4d140bbbe100 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -750,9 +750,10 @@ void intel_idle_state_table_update(void) if (package_num + 1 > num_sockets) { num_sockets = package_num + 1; - if (num_sockets > 4) + if (num_sockets > 4) { cpuidle_state_table = ivt_cstates_8s; return; + } } } From f3f125324fc1b8500cd20a2907628f7e5d88a708 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 20 Apr 2014 23:43:01 +0200 Subject: [PATCH 215/623] PM / suspend: Make cpuidle work in the "freeze" state The "freeze" system sleep state introduced by commit 7e73c5ae6e79 (PM: Introduce suspend state PM_SUSPEND_FREEZE) requires cpuidle to be functional when freeze_enter() is executed to work correctly (that is, to be able to save any more energy than runtime idle), but that is impossible after commit 8651f97bd951d (PM / cpuidle: System resume hang fix with cpuidle) which caused cpuidle to be paused in dpm_suspend_noirq() and resumed in dpm_resume_noirq(). To avoid that problem, add cpuidle_resume() and cpuidle_pause() to the beginning and the end of freeze_enter(), respectively. Reported-by: Zhang Rui Signed-off-by: Rafael J. Wysocki Reviewed-by: Preeti U Murthy --- kernel/power/suspend.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index c3ad9cafe930..8233cd4047d7 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -53,7 +54,9 @@ static void freeze_begin(void) static void freeze_enter(void) { + cpuidle_resume(); wait_event(suspend_freeze_wait_head, suspend_freeze_wake); + cpuidle_pause(); } void freeze_wake(void) From 8ab4e2b30a0921d819b196d34ce58f19c3e0270b Mon Sep 17 00:00:00 2001 From: Duan Jiong Date: Fri, 11 Apr 2014 15:59:38 +0800 Subject: [PATCH 216/623] cpufreq: unicore32: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO This patch fixes coccinelle error regarding usage of IS_ERR and PTR_ERR instead of PTR_ERR_OR_ZERO. Signed-off-by: Duan Jiong Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/unicore2-cpufreq.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/cpufreq/unicore2-cpufreq.c b/drivers/cpufreq/unicore2-cpufreq.c index 8d045afa7fb4..6f9dfa80563a 100644 --- a/drivers/cpufreq/unicore2-cpufreq.c +++ b/drivers/cpufreq/unicore2-cpufreq.c @@ -60,9 +60,7 @@ static int __init ucv2_cpu_init(struct cpufreq_policy *policy) policy->max = policy->cpuinfo.max_freq = 1000000; policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; policy->clk = clk_get(NULL, "MAIN_CLK"); - if (IS_ERR(policy->clk)) - return PTR_ERR(policy->clk); - return 0; + return PTR_ERR_OR_ZERO(policy->clk); } static struct cpufreq_driver ucv2_driver = { From f3cae355a962784101478504ef7f6a389ad62979 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Wed, 16 Apr 2014 11:35:38 +0530 Subject: [PATCH 217/623] cpufreq, powernv: Fix build failure on UP Paul Gortmaker reported the following build failure of the powernv cpufreq driver on UP configs: drivers/cpufreq/powernv-cpufreq.c:241:2: error: implicit declaration of function 'cpu_sibling_mask' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[3]: *** [drivers/cpufreq/powernv-cpufreq.o] Error 1 make[2]: *** [drivers/cpufreq] Error 2 make[1]: *** [drivers] Error 2 make: *** [sub-make] Error 2 The trouble here is that cpu_sibling_mask is defined only in , and includes only in SMP builds. So fix this build failure by explicitly including in the driver, so that we get the definition of cpu_sibling_mask even in UP configurations. Reported-by: Paul Gortmaker Signed-off-by: Srivatsa S. Bhat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/powernv-cpufreq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c index 9edccc63245d..af4968813e76 100644 --- a/drivers/cpufreq/powernv-cpufreq.c +++ b/drivers/cpufreq/powernv-cpufreq.c @@ -29,6 +29,7 @@ #include #include +#include /* Required for cpu_sibling_mask() in UP configs */ #define POWERNV_MAX_PSTATES 256 From 1612343a264b2791f4602f4b47dac853e0892ec0 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 17 Apr 2014 11:53:26 +0200 Subject: [PATCH 218/623] cpufreq: ppc: Fix integer overflow in expression On 32-bit, "12 * NSEC_PER_SEC" doesn't fit in "unsigned long" (NSEC_PER_SEC is a "long" constant), causing an integer overflow: drivers/cpufreq/ppc-corenet-cpufreq.c: In function 'corenet_cpufreq_cpu_init': drivers/cpufreq/ppc-corenet-cpufreq.c:211:9: warning: integer overflow in expression [-Woverflow] Force the intermediate to be 64-bit by adding an "ULL" suffix to the constant multiplier to fix this. Signed-off-by: Geert Uytterhoeven Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/ppc-corenet-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index b7e677be1df0..a1ca3dd04a8e 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -206,7 +206,7 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) per_cpu(cpu_data, i) = data; policy->cpuinfo.transition_latency = - (12 * NSEC_PER_SEC) / fsl_get_sys_freq(); + (12ULL * NSEC_PER_SEC) / fsl_get_sys_freq(); of_node_put(np); return 0; From d76ae2eabca5ff112bb58de8a7d52b70f8bb0608 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Wed, 9 Apr 2014 10:34:33 +0800 Subject: [PATCH 219/623] cpufreq: highbank: fix ARM_HIGHBANK_CPUFREQ dependency warning When make ARCH=arm multi_v7_defconfig, we get the following warnings: warning: (ARM_HIGHBANK_CPUFREQ) selects GENERIC_CPUFREQ_CPU0 which has unmet direct dependencies (ARCH_HAS_CPUFREQ && CPU_FREQ && HAVE_CLK && REGULATOR && OF && THERMAL && CPU_THERMAL) To fix this, make ARM_HIGHBANK_CPUFREQ depend on ARCH_HAS_CPUFREQ and REGULATOR instead of selecting them, PM_OPP will be selected by ARCH_HAS_CPUFREQ. Signed-off-by: Kefeng Wang Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/Kconfig.arm | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 0e9cce82844b..580503513f0f 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -92,11 +92,7 @@ config ARM_EXYNOS_CPU_FREQ_BOOST_SW config ARM_HIGHBANK_CPUFREQ tristate "Calxeda Highbank-based" - depends on ARCH_HIGHBANK - select GENERIC_CPUFREQ_CPU0 - select PM_OPP - select REGULATOR - + depends on ARCH_HIGHBANK && GENERIC_CPUFREQ_CPU0 && REGULATOR default m help This adds the CPUFreq driver for Calxeda Highbank SoC From efe8072316a899294212055c147d3d9adca940a4 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 21 Apr 2014 19:26:13 -0700 Subject: [PATCH 220/623] ARM: OMAP2+: Fix oops for GPMC free If gpmc_cs_remap() fails we will get an error because we are calling release_resource() on an uninitialized resource. Let's fix that by checking the resource flags. And while at it, let's also make gpmc_cs_delete_mem() use the res pointer that we already have to avoid confusion. Without this patch we can get the following error: omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300 Unable to handle kernel NULL pointer dereference at virtual address 00000018 ... (gpmc_cs_free+0x94/0xc8) (gpmc_probe_generic_child+0x178/0x1ec) (gpmc_probe_dt+0x1bc/0x2cc) (gpmc_probe+0x250/0x44c) (platform_drv_probe+0x3c/0x6c) (really_probe+0x74/0x208) (driver_probe_device+0x34/0x50) (bus_for_each_drv+0x60/0x8c) (device_attach+0x80/0xa4) (bus_probe_device+0x88/0xb0) (device_add+0x320/0x450) (of_platform_device_create_pdata+0x80/0x9c) (of_platform_bus_create+0xd0/0x170) (of_platform_bus_create+0x12c/0x170) (of_platform_populate+0x60/0x98) (pdata_quirks_init+0x30/0x48) (customize_machine+0x20/0x48) (do_one_initcall+0x2c/0x14c) (do_basic_setup+0x98/0xd8) (kernel_init_freeable+0x12c/0x1e0) (kernel_init+0x8/0xf0) (ret_from_fork+0x14/0x2c) Code: e1a04000 e59f0070 eb195136 e5942010 (e5923018) Cc: Pekon Gupta Reviewed-by: Javier Martinez Canillas Signed-off-by: tony Lindgren --- arch/arm/mach-omap2/gpmc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index ab43755364f5..84e57e6fbc26 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -501,7 +501,7 @@ static int gpmc_cs_delete_mem(int cs) int r; spin_lock(&gpmc_mem_lock); - r = release_resource(&gpmc_cs_mem[cs]); + r = release_resource(res); res->start = 0; res->end = 0; spin_unlock(&gpmc_mem_lock); @@ -586,6 +586,8 @@ EXPORT_SYMBOL(gpmc_cs_request); void gpmc_cs_free(int cs) { + struct resource *res = &gpmc_cs_mem[cs]; + spin_lock(&gpmc_mem_lock); if (cs >= gpmc_cs_num || cs < 0 || !gpmc_cs_reserved(cs)) { printk(KERN_ERR "Trying to free non-reserved GPMC CS%d\n", cs); @@ -594,7 +596,8 @@ void gpmc_cs_free(int cs) return; } gpmc_cs_disable_mem(cs); - release_resource(&gpmc_cs_mem[cs]); + if (res->flags) + release_resource(res); gpmc_cs_set_reserved(cs, 0); spin_unlock(&gpmc_mem_lock); } From b2bf5d484848450e7aa3332e268c5e874d9dc523 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Fri, 4 Apr 2014 16:14:12 -0700 Subject: [PATCH 221/623] ARM: zynq: DT: Add 'clock-latency' property Specify the 'clock-latency' property to avoid certain cpufreq governors from refusing to work with the following error: ondemand governor failed, too long transition latency of HW, fallback to performance governor Reported-by: Mike Looijmans Signed-off-by: Soren Brinkmann Tested-by: Mike Looijmans Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 511180769af5..c39baefcfd76 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -24,6 +24,7 @@ device_type = "cpu"; reg = <0>; clocks = <&clkc 3>; + clock-latency = <1000>; operating-points = < /* kHz uV */ 666667 1000000 From 0f6faa3fc909482c2b40161de9bcf0d5460e54c5 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Fri, 4 Apr 2014 14:27:56 -0700 Subject: [PATCH 222/623] ARM: zynq: dt: Add I2C nodes to Zynq device tree Signed-off-by: Soren Brinkmann Tested-by: Michal Simek Signed-off-by: Michal Simek --- arch/arm/boot/dts/zynq-7000.dtsi | 22 +++++++++ arch/arm/boot/dts/zynq-zc702.dts | 76 ++++++++++++++++++++++++++++++++ arch/arm/boot/dts/zynq-zc706.dts | 68 ++++++++++++++++++++++++++++ 3 files changed, 166 insertions(+) diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index c39baefcfd76..c1176abc34d9 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -55,6 +55,28 @@ interrupt-parent = <&intc>; ranges; + i2c0: zynq-i2c@e0004000 { + compatible = "cdns,i2c-r1p10"; + status = "disabled"; + clocks = <&clkc 38>; + interrupt-parent = <&intc>; + interrupts = <0 25 4>; + reg = <0xe0004000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c1: zynq-i2c@e0005000 { + compatible = "cdns,i2c-r1p10"; + status = "disabled"; + clocks = <&clkc 39>; + interrupt-parent = <&intc>; + interrupts = <0 48 4>; + reg = <0xe0005000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + }; + intc: interrupt-controller@f8f01000 { compatible = "arm,cortex-a9-gic"; #interrupt-cells = <3>; diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts index c913f77a21eb..5e09cee33d42 100644 --- a/arch/arm/boot/dts/zynq-zc702.dts +++ b/arch/arm/boot/dts/zynq-zc702.dts @@ -34,6 +34,82 @@ phy-mode = "rgmii"; }; +&i2c0 { + status = "okay"; + clock-frequency = <400000>; + + i2cswitch@74 { + compatible = "nxp,pca9548"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x74>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + si570: clock-generator@5d { + #clock-cells = <0>; + compatible = "silabs,si570"; + temperature-stability = <50>; + reg = <0x5d>; + factory-fout = <156250000>; + clock-frequency = <148500000>; + }; + }; + + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + eeprom@54 { + compatible = "at,24c08"; + reg = <0x54>; + }; + }; + + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + gpio@21 { + compatible = "ti,tca6416"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + + i2c@4 { + #address-cells = <1>; + #size-cells = <0>; + reg = <4>; + rtc@51 { + compatible = "nxp,pcf8563"; + reg = <0x51>; + }; + }; + + i2c@7 { + #address-cells = <1>; + #size-cells = <0>; + reg = <7>; + hwmon@52 { + compatible = "ti,ucd9248"; + reg = <52>; + }; + hwmon@53 { + compatible = "ti,ucd9248"; + reg = <53>; + }; + hwmon@54 { + compatible = "ti,ucd9248"; + reg = <54>; + }; + }; + }; +}; + &sdhci0 { status = "okay"; }; diff --git a/arch/arm/boot/dts/zynq-zc706.dts b/arch/arm/boot/dts/zynq-zc706.dts index 88f62c50382e..4cc9913078cd 100644 --- a/arch/arm/boot/dts/zynq-zc706.dts +++ b/arch/arm/boot/dts/zynq-zc706.dts @@ -35,6 +35,74 @@ phy-mode = "rgmii"; }; +&i2c0 { + status = "okay"; + clock-frequency = <400000>; + + i2cswitch@74 { + compatible = "nxp,pca9548"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x74>; + + i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + si570: clock-generator@5d { + #clock-cells = <0>; + compatible = "silabs,si570"; + temperature-stability = <50>; + reg = <0x5d>; + factory-fout = <156250000>; + clock-frequency = <148500000>; + }; + }; + + i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <2>; + eeprom@54 { + compatible = "at,24c08"; + reg = <0x54>; + }; + }; + + i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <3>; + gpio@21 { + compatible = "ti,tca6416"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + + i2c@4 { + #address-cells = <1>; + #size-cells = <0>; + reg = <4>; + rtc@51 { + compatible = "nxp,pcf8563"; + reg = <0x51>; + }; + }; + + i2c@7 { + #address-cells = <1>; + #size-cells = <0>; + reg = <7>; + ucd90120@65 { + compatible = "ti,ucd90120"; + reg = <0x65>; + }; + }; + }; +}; + &sdhci0 { status = "okay"; }; From ad47b8fa5a679b7acaae831635e40d2e4887e9e7 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 22 Apr 2014 02:02:06 -0400 Subject: [PATCH 223/623] drm/radeon/aux: fix hpd assignment for aux bus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The hpd (hot plug detect) pin assignment got lost in the conversion to to the common i2c over aux code. Without this information, aux transactions do not work properly. Fixes DP failures. Signed-off-by: Alex Deucher Signed-off-by: Christian König --- drivers/gpu/drm/radeon/atombios_dp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 15936524f226..bc0119fb6c12 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -209,6 +209,7 @@ void radeon_dp_aux_init(struct radeon_connector *radeon_connector) { int ret; + radeon_connector->ddc_bus->rec.hpd = radeon_connector->hpd.hpd; radeon_connector->ddc_bus->aux.dev = radeon_connector->base.kdev; radeon_connector->ddc_bus->aux.transfer = radeon_dp_aux_transfer; ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus->aux); From 8f2dd677bec68fb55904799a82674c9e64b23be3 Mon Sep 17 00:00:00 2001 From: Behan Webster Date: Mon, 21 Apr 2014 22:40:27 -0700 Subject: [PATCH 224/623] x86: LLVMLinux: Wrap -mno-80387 with cc-option Wrap -mno-80387 gcc options with cc-option so they don't break clang. Signed-off-by: Behan Webster Cc: torvalds@linux-foundation.org Cc: dwmw2@infradead.org Cc: pageexec@freemail.hu Link: http://lkml.kernel.org/r/1398145227-25053-1-git-send-email-behanw@converseincode.com Signed-off-by: Ingo Molnar --- arch/x86/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index d1b7c377a234..ce6ad7e6a7d7 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -83,7 +83,9 @@ else KBUILD_CFLAGS += -m64 # Don't autogenerate traditional x87, MMX or SSE instructions - KBUILD_CFLAGS += -mno-mmx -mno-sse -mno-80387 -mno-fp-ret-in-387 + KBUILD_CFLAGS += -mno-mmx -mno-sse + KBUILD_CFLAGS += $(call cc-option,-mno-80387) + KBUILD_CFLAGS += $(call cc-option,-mno-fp-ret-in-387) # Use -mpreferred-stack-boundary=3 if supported. KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3) From 40478455fefdc0bde24ae872c3f88d58a1b0e435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 27 Mar 2014 11:08:45 +0200 Subject: [PATCH 225/623] drm/i915: Allow user modes to exceed DVI 165MHz limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In commit commit 6375b768a9850b6154478993e5fb566fa4614a9c Author: Ville Syrjälä Date: Mon Mar 3 11:33:36 2014 +0200 drm/i915: Reject >165MHz modes w/ DVI monitors the driver started to filter out display modes which exceed the single-link DVI 165Mz dotclock limits when the monitor doesn't report itself as being HDMI compliant. The intent was to filter out all EDID derived modes that require dual-link DVI to operate since we don't support dual-link. However the patch went a bit too far and also causes the driver to reject such modes even when specified by the user. Normally we don't check the sink limitations when setting a mode from the user. This allows the user to specify any mode whether the sink reports to support it or not. This can be useful since often the sinks support more modes than they report in the EDID. So relax the checks a bit, and apply the single-link DVI dotclock limit only when filtering the mode list, and ignore the limit when setting a user specified mode. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=72961 Tested-by: Nicholas Vinson Cc: stable@vger.kernel.org [3.14] Reviewed-by: Daniel Vetter Signed-off-by: Ville Syrjälä Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_hdmi.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index b0413e190625..157267aa3561 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -821,11 +821,11 @@ static void intel_disable_hdmi(struct intel_encoder *encoder) } } -static int hdmi_portclock_limit(struct intel_hdmi *hdmi) +static int hdmi_portclock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit) { struct drm_device *dev = intel_hdmi_to_dev(hdmi); - if (!hdmi->has_hdmi_sink || IS_G4X(dev)) + if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev)) return 165000; else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8) return 300000; @@ -837,7 +837,8 @@ static enum drm_mode_status intel_hdmi_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { - if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector))) + if (mode->clock > hdmi_portclock_limit(intel_attached_hdmi(connector), + true)) return MODE_CLOCK_HIGH; if (mode->clock < 20000) return MODE_CLOCK_LOW; @@ -879,7 +880,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, struct drm_device *dev = encoder->base.dev; struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode; int clock_12bpc = pipe_config->adjusted_mode.crtc_clock * 3 / 2; - int portclock_limit = hdmi_portclock_limit(intel_hdmi); + int portclock_limit = hdmi_portclock_limit(intel_hdmi, false); int desired_bpp; if (intel_hdmi->color_range_auto) { From 0d3f7a2dd2f5cf9642982515e020c1aee2cf7af6 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 22 Apr 2014 08:23:58 -0400 Subject: [PATCH 226/623] locks: rename file-private locks to "open file description locks" File-private locks have been merged into Linux for v3.15, and *now* people are commenting that the name and macro definitions for the new file-private locks suck. ...and I can't even disagree. The names and command macros do suck. We're going to have to live with these for a long time, so it's important that we be happy with the names before we're stuck with them. The consensus on the lists so far is that they should be rechristened as "open file description locks". The name isn't a big deal for the kernel, but the command macros are not visually distinct enough from the traditional POSIX lock macros. The glibc and documentation folks are recommending that we change them to look like F_OFD_{GETLK|SETLK|SETLKW}. That lessens the chance that a programmer will typo one of the commands wrong, and also makes it easier to spot this difference when reading code. This patch makes the following changes that I think are necessary before v3.15 ships: 1) rename the command macros to their new names. These end up in the uapi headers and so are part of the external-facing API. It turns out that glibc doesn't actually use the fcntl.h uapi header, but it's hard to be sure that something else won't. Changing it now is safest. 2) make the the /proc/locks output display these as type "OFDLCK" Cc: Michael Kerrisk Cc: Christoph Hellwig Cc: Carlos O'Donell Cc: Stefan Metzmacher Cc: Andy Lutomirski Cc: Frank Filz Cc: Theodore Ts'o Signed-off-by: Jeff Layton --- arch/arm/kernel/sys_oabi-compat.c | 6 +++--- fs/compat.c | 14 +++++++------- fs/fcntl.c | 12 ++++++------ fs/locks.c | 14 +++++++------- include/uapi/asm-generic/fcntl.h | 20 ++++++++++---------- security/selinux/hooks.c | 6 +++--- 6 files changed, 36 insertions(+), 36 deletions(-) diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index 702bd329d9d0..e90a3148f385 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -203,9 +203,9 @@ asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd, int ret; switch (cmd) { - case F_GETLKP: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_GETLK: + case F_OFD_SETLK: + case F_OFD_SETLKW: case F_GETLK64: case F_SETLK64: case F_SETLKW64: diff --git a/fs/compat.c b/fs/compat.c index ca926ad0430c..66d3d3c6b4b2 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -457,9 +457,9 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, case F_GETLK64: case F_SETLK64: case F_SETLKW64: - case F_GETLKP: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_GETLK: + case F_OFD_SETLK: + case F_OFD_SETLKW: ret = get_compat_flock64(&f, compat_ptr(arg)); if (ret != 0) break; @@ -468,7 +468,7 @@ COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, conv_cmd = convert_fcntl_cmd(cmd); ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f); set_fs(old_fs); - if ((conv_cmd == F_GETLK || conv_cmd == F_GETLKP) && ret == 0) { + if ((conv_cmd == F_GETLK || conv_cmd == F_OFD_GETLK) && ret == 0) { /* need to return lock information - see above for commentary */ if (f.l_start > COMPAT_LOFF_T_MAX) ret = -EOVERFLOW; @@ -493,9 +493,9 @@ COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd, case F_GETLK64: case F_SETLK64: case F_SETLKW64: - case F_GETLKP: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_GETLK: + case F_OFD_SETLK: + case F_OFD_SETLKW: return -EINVAL; } return compat_sys_fcntl64(fd, cmd, arg); diff --git a/fs/fcntl.c b/fs/fcntl.c index 9ead1596399a..72c82f69b01b 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -274,15 +274,15 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg, break; #if BITS_PER_LONG != 32 /* 32-bit arches must use fcntl64() */ - case F_GETLKP: + case F_OFD_GETLK: #endif case F_GETLK: err = fcntl_getlk(filp, cmd, (struct flock __user *) arg); break; #if BITS_PER_LONG != 32 /* 32-bit arches must use fcntl64() */ - case F_SETLKP: - case F_SETLKPW: + case F_OFD_SETLK: + case F_OFD_SETLKW: #endif /* Fallthrough */ case F_SETLK: @@ -399,13 +399,13 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd, switch (cmd) { case F_GETLK64: - case F_GETLKP: + case F_OFD_GETLK: err = fcntl_getlk64(f.file, cmd, (struct flock64 __user *) arg); break; case F_SETLK64: case F_SETLKW64: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_SETLK: + case F_OFD_SETLKW: err = fcntl_setlk64(fd, f.file, cmd, (struct flock64 __user *) arg); break; diff --git a/fs/locks.c b/fs/locks.c index b380f5543614..e1023b504279 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1941,7 +1941,7 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l) if (error) goto out; - if (cmd == F_GETLKP) { + if (cmd == F_OFD_GETLK) { error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2076,7 +2076,7 @@ again: * FL_FILE_PVT flag and override the owner. */ switch (cmd) { - case F_SETLKP: + case F_OFD_SETLK: error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2085,7 +2085,7 @@ again: file_lock->fl_flags |= FL_FILE_PVT; file_lock->fl_owner = (fl_owner_t)filp; break; - case F_SETLKPW: + case F_OFD_SETLKW: error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2143,7 +2143,7 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l) if (error) goto out; - if (cmd == F_GETLKP) { + if (cmd == F_OFD_GETLK) { error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2211,7 +2211,7 @@ again: * FL_FILE_PVT flag and override the owner. */ switch (cmd) { - case F_SETLKP: + case F_OFD_SETLK: error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2220,7 +2220,7 @@ again: file_lock->fl_flags |= FL_FILE_PVT; file_lock->fl_owner = (fl_owner_t)filp; break; - case F_SETLKPW: + case F_OFD_SETLKW: error = -EINVAL; if (flock.l_pid != 0) goto out; @@ -2413,7 +2413,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, if (fl->fl_flags & FL_ACCESS) seq_printf(f, "ACCESS"); else if (IS_FILE_PVT(fl)) - seq_printf(f, "FLPVT "); + seq_printf(f, "OFDLCK"); else seq_printf(f, "POSIX "); diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h index a9b13f8b3595..7543b3e51331 100644 --- a/include/uapi/asm-generic/fcntl.h +++ b/include/uapi/asm-generic/fcntl.h @@ -133,20 +133,20 @@ #endif /* - * fd "private" POSIX locks. + * Open File Description Locks * - * Usually POSIX locks held by a process are released on *any* close and are + * Usually record locks held by a process are released on *any* close and are * not inherited across a fork(). * - * These cmd values will set locks that conflict with normal POSIX locks, but - * are "owned" by the opened file, not the process. This means that they are - * inherited across fork() like BSD (flock) locks, and they are only released - * automatically when the last reference to the the open file against which - * they were acquired is put. + * These cmd values will set locks that conflict with process-associated + * record locks, but are "owned" by the open file description, not the + * process. This means that they are inherited across fork() like BSD (flock) + * locks, and they are only released automatically when the last reference to + * the the open file against which they were acquired is put. */ -#define F_GETLKP 36 -#define F_SETLKP 37 -#define F_SETLKPW 38 +#define F_OFD_GETLK 36 +#define F_OFD_SETLK 37 +#define F_OFD_SETLKW 38 #define F_OWNER_TID 0 #define F_OWNER_PID 1 diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index b4beb77967b1..2c7341dbc5d6 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -3317,9 +3317,9 @@ static int selinux_file_fcntl(struct file *file, unsigned int cmd, case F_GETLK: case F_SETLK: case F_SETLKW: - case F_GETLKP: - case F_SETLKP: - case F_SETLKPW: + case F_OFD_GETLK: + case F_OFD_SETLK: + case F_OFD_SETLKW: #if BITS_PER_LONG == 32 case F_GETLK64: case F_SETLK64: From 7e95cfb0b797678cd3493ca0322ef2675547a0bc Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 22 Apr 2014 08:17:18 -0400 Subject: [PATCH 227/623] drm/radeon: fix count in cik_sdma_ring_test() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Should be 5 rather than 4. Noticed-by: Mathias Fröhlich Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Christian König --- drivers/gpu/drm/radeon/cik_sdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c index 89b4afa5041c..f7e46cf682af 100644 --- a/drivers/gpu/drm/radeon/cik_sdma.c +++ b/drivers/gpu/drm/radeon/cik_sdma.c @@ -597,7 +597,7 @@ int cik_sdma_ring_test(struct radeon_device *rdev, tmp = 0xCAFEDEAD; writel(tmp, ptr); - r = radeon_ring_lock(rdev, ring, 4); + r = radeon_ring_lock(rdev, ring, 5); if (r) { DRM_ERROR("radeon: dma failed to lock ring %d (%d).\n", ring->idx, r); return r; From 4c5fba3d4ae3a7aae2c4a56d4a234aa556b7caca Mon Sep 17 00:00:00 2001 From: Christian Ruppert Date: Fri, 11 Apr 2014 16:46:04 +0200 Subject: [PATCH 228/623] pinctrl/TB10x: Fix signedness bug In the TB10x pin database, a port index of -1 is used to indicate unmuxed GPIO pin groups. This bug fixes a 'cast to unsigned' bug of this value. Thanks to Dan Carpenter for highlighting this. CC: Dan Carpenter Signed-off-by: Christian Ruppert Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-tb10x.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pinctrl/pinctrl-tb10x.c b/drivers/pinctrl/pinctrl-tb10x.c index c5e0f6973a3b..26ca6855f478 100644 --- a/drivers/pinctrl/pinctrl-tb10x.c +++ b/drivers/pinctrl/pinctrl-tb10x.c @@ -629,9 +629,8 @@ static int tb10x_gpio_request_enable(struct pinctrl_dev *pctl, */ for (i = 0; i < state->pinfuncgrpcnt; i++) { const struct tb10x_pinfuncgrp *pfg = &state->pingroups[i]; - unsigned int port = pfg->port; unsigned int mode = pfg->mode; - int j; + int j, port = pfg->port; /* * Skip pin groups which are always mapped and don't need From 062f1d6de01df545ca0df366c6133f0fa164bff6 Mon Sep 17 00:00:00 2001 From: Chun-Yeow Yeoh Date: Tue, 22 Apr 2014 18:19:25 +0800 Subject: [PATCH 229/623] mac80211: avoid handling of SMPS for mesh The patch "mac80211: implement SMPS for AP" has caused kernel oops at mesh STA if the peer mesh STA operates in sleep mode and then becomes active mode. It can be easily reproduced by setting the following commands at peer mesh STA: iw mesh0 station set aa:bb:cc:dd:ee:ff mesh_power_mode deep iw mesh0 station set aa:bb:cc:dd:ee:ff mesh_power_mode active Kernel oops will happen at mesh STA aa:bb:cc:dd:ee:ff. Fix this by avoiding SMPS for mesh mode. Signed-off-by: Chun-Yeow Yeoh Signed-off-by: Johannes Berg --- net/mac80211/sta_info.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index 137a192e64bc..847d92f6bef6 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -1148,7 +1148,8 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta) atomic_dec(&ps->num_sta_ps); /* This station just woke up and isn't aware of our SMPS state */ - if (!ieee80211_smps_is_restrictive(sta->known_smps_mode, + if (!ieee80211_vif_is_mesh(&sdata->vif) && + !ieee80211_smps_is_restrictive(sta->known_smps_mode, sdata->smps_mode) && sta->known_smps_mode != sdata->bss->req_smps && sta_info_tx_streams(sta) != 1) { From cb3e4e7c59e4b43ac378631f6101f5c8de3a27a5 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 15 Apr 2014 12:44:32 -0400 Subject: [PATCH 230/623] drm/radeon: properly unregister hwmon interface (v2) Need to properly unregister the hwmon device on driver unload. v2: minor clean up bug: https://bugzilla.kernel.org/show_bug.cgi?id=73931 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_pm.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 0c4473db8501..d79895aebc59 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -603,7 +603,6 @@ static const struct attribute_group *hwmon_groups[] = { static int radeon_hwmon_init(struct radeon_device *rdev) { int err = 0; - struct device *hwmon_dev; switch (rdev->pm.int_thermal_type) { case THERMAL_TYPE_RV6XX: @@ -616,11 +615,11 @@ static int radeon_hwmon_init(struct radeon_device *rdev) case THERMAL_TYPE_KV: if (rdev->asic->pm.get_temperature == NULL) return err; - hwmon_dev = hwmon_device_register_with_groups(rdev->dev, - "radeon", rdev, - hwmon_groups); - if (IS_ERR(hwmon_dev)) { - err = PTR_ERR(hwmon_dev); + rdev->pm.int_hwmon_dev = hwmon_device_register_with_groups(rdev->dev, + "radeon", rdev, + hwmon_groups); + if (IS_ERR(rdev->pm.int_hwmon_dev)) { + err = PTR_ERR(rdev->pm.int_hwmon_dev); dev_err(rdev->dev, "Unable to register hwmon device: %d\n", err); } @@ -632,6 +631,12 @@ static int radeon_hwmon_init(struct radeon_device *rdev) return err; } +static void radeon_hwmon_fini(struct radeon_device *rdev) +{ + if (rdev->pm.int_hwmon_dev) + hwmon_device_unregister(rdev->pm.int_hwmon_dev); +} + static void radeon_dpm_thermal_work_handler(struct work_struct *work) { struct radeon_device *rdev = @@ -1353,6 +1358,8 @@ static void radeon_pm_fini_old(struct radeon_device *rdev) device_remove_file(rdev->dev, &dev_attr_power_method); } + radeon_hwmon_fini(rdev); + if (rdev->pm.power_state) kfree(rdev->pm.power_state); } @@ -1372,6 +1379,8 @@ static void radeon_pm_fini_dpm(struct radeon_device *rdev) } radeon_dpm_fini(rdev); + radeon_hwmon_fini(rdev); + if (rdev->pm.power_state) kfree(rdev->pm.power_state); } From 3ed9a335cfc64b2c83545f341cdddf2347b12b97 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 15 Apr 2014 12:44:33 -0400 Subject: [PATCH 231/623] drm/radeon/pm: don't walk the crtc list before it has been initialized (v2) Avoids a crash in certain cases when thermal irqs are generated before the display structures have been initialized. v2: fix the vblank and vrefresh helpers as well bug: https://bugzilla.kernel.org/show_bug.cgi?id=73931 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/r600_dpm.c | 35 ++++++++++++++++-------------- drivers/gpu/drm/radeon/radeon_pm.c | 28 ++++++++++++++---------- 2 files changed, 35 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index cbf7e3269f84..9c61b74ef441 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -158,16 +158,18 @@ u32 r600_dpm_get_vblank_time(struct radeon_device *rdev) u32 line_time_us, vblank_lines; u32 vblank_time_us = 0xffffffff; /* if the displays are off, vblank time is max */ - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - radeon_crtc = to_radeon_crtc(crtc); - if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) { - line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) / - radeon_crtc->hw_mode.clock; - vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end - - radeon_crtc->hw_mode.crtc_vdisplay + - (radeon_crtc->v_border * 2); - vblank_time_us = vblank_lines * line_time_us; - break; + if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) { + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) { + line_time_us = (radeon_crtc->hw_mode.crtc_htotal * 1000) / + radeon_crtc->hw_mode.clock; + vblank_lines = radeon_crtc->hw_mode.crtc_vblank_end - + radeon_crtc->hw_mode.crtc_vdisplay + + (radeon_crtc->v_border * 2); + vblank_time_us = vblank_lines * line_time_us; + break; + } } } @@ -181,14 +183,15 @@ u32 r600_dpm_get_vrefresh(struct radeon_device *rdev) struct radeon_crtc *radeon_crtc; u32 vrefresh = 0; - list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { - radeon_crtc = to_radeon_crtc(crtc); - if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) { - vrefresh = radeon_crtc->hw_mode.vrefresh; - break; + if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) { + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) { + vrefresh = radeon_crtc->hw_mode.vrefresh; + break; + } } } - return vrefresh; } diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index d79895aebc59..6fac8efe8340 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -1406,12 +1406,14 @@ static void radeon_pm_compute_clocks_old(struct radeon_device *rdev) rdev->pm.active_crtcs = 0; rdev->pm.active_crtc_count = 0; - list_for_each_entry(crtc, - &ddev->mode_config.crtc_list, head) { - radeon_crtc = to_radeon_crtc(crtc); - if (radeon_crtc->enabled) { - rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id); - rdev->pm.active_crtc_count++; + if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) { + list_for_each_entry(crtc, + &ddev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (radeon_crtc->enabled) { + rdev->pm.active_crtcs |= (1 << radeon_crtc->crtc_id); + rdev->pm.active_crtc_count++; + } } } @@ -1478,12 +1480,14 @@ static void radeon_pm_compute_clocks_dpm(struct radeon_device *rdev) /* update active crtc counts */ rdev->pm.dpm.new_active_crtcs = 0; rdev->pm.dpm.new_active_crtc_count = 0; - list_for_each_entry(crtc, - &ddev->mode_config.crtc_list, head) { - radeon_crtc = to_radeon_crtc(crtc); - if (crtc->enabled) { - rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id); - rdev->pm.dpm.new_active_crtc_count++; + if (rdev->num_crtc && rdev->mode_info.mode_config_initialized) { + list_for_each_entry(crtc, + &ddev->mode_config.crtc_list, head) { + radeon_crtc = to_radeon_crtc(crtc); + if (crtc->enabled) { + rdev->pm.dpm.new_active_crtcs |= (1 << radeon_crtc->crtc_id); + rdev->pm.dpm.new_active_crtc_count++; + } } } From e9a4099a59cc598a44006059dd775c25e422b772 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 15 Apr 2014 12:44:34 -0400 Subject: [PATCH 232/623] drm/radeon: fix ATPX detection on non-VGA GPUs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some newer PX laptops have the pci device class set to DISPLAY_OTHER rather than DISPLAY_VGA. This properly detects ATPX on those laptops. Based on a patch from: Pali Rohár Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Cc: airlied@gmail.com --- drivers/gpu/drm/radeon/radeon_atpx_handler.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c index dedea72f48c4..a9fb0d016d38 100644 --- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c +++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c @@ -528,6 +528,13 @@ static bool radeon_atpx_detect(void) has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true); } + /* some newer PX laptops mark the dGPU as a non-VGA display device */ + while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { + vga_count++; + + has_atpx |= (radeon_atpx_pci_probe_handle(pdev) == true); + } + if (has_atpx && vga_count == 2) { acpi_get_name(radeon_atpx_priv.atpx.handle, ACPI_FULL_PATHNAME, &buffer); printk(KERN_INFO "VGA switcheroo: detected switching method %s handle\n", From 73acacc7397fe854ed2ab75f1c940fa00faaf15e Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 15 Apr 2014 12:44:35 -0400 Subject: [PATCH 233/623] drm/radeon: don't allow runpm=1 on systems with out ATPX vgaswitcheroo and the ATPX ACPI methods are required to power down the dGPU. bug: https://bugzilla.kernel.org/show_bug.cgi?id=73901 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_kms.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index fb3d13f693dd..0cc47f12d995 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -107,11 +107,9 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags) flags |= RADEON_IS_PCI; } - if (radeon_runtime_pm == 1) - flags |= RADEON_IS_PX; - else if ((radeon_runtime_pm == -1) && - radeon_has_atpx() && - ((flags & RADEON_IS_IGP) == 0)) + if ((radeon_runtime_pm != 0) && + radeon_has_atpx() && + ((flags & RADEON_IS_IGP) == 0)) flags |= RADEON_IS_PX; /* radeon_device_init should report only fatal error From a73d2e30b46787d478275db36c19222020e29dc5 Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Wed, 16 Apr 2014 13:40:17 -0700 Subject: [PATCH 234/623] pinctrl: as3722: fix handling of GPIO invert bit The AS3722_GPIO_INV bit will always be blindly overwritten by as3722_pinctrl_gpio_set_direction() and will be ignored when setting the value of the GPIO in as3722_gpio_set() since the enable_gpio_invert flag is never set. This will cause an initially inverted GPIO to toggle when requested as an output, which could be problematic if, for example, the GPIO controls a critical regulator. Instead of setting up the enable_gpio_invert flag, just leave the invert bit alone and check it before setting the GPIO value. Cc: # v3.14+ Signed-off-by: Andrew Bresticker Reviewed-by: Stephen Warren Tested-by: Stephen Warren Acked-by: Laxman Dewangan Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-as3722.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/pinctrl-as3722.c b/drivers/pinctrl/pinctrl-as3722.c index 92ed4b2e3c07..c862f9c0e9ce 100644 --- a/drivers/pinctrl/pinctrl-as3722.c +++ b/drivers/pinctrl/pinctrl-as3722.c @@ -64,7 +64,6 @@ struct as3722_pin_function { }; struct as3722_gpio_pin_control { - bool enable_gpio_invert; unsigned mode_prop; int io_function; }; @@ -320,10 +319,8 @@ static int as3722_pinctrl_gpio_set_direction(struct pinctrl_dev *pctldev, return mode; } - if (as_pci->gpio_control[offset].enable_gpio_invert) - mode |= AS3722_GPIO_INV; - - return as3722_write(as3722, AS3722_GPIOn_CONTROL_REG(offset), mode); + return as3722_update_bits(as3722, AS3722_GPIOn_CONTROL_REG(offset), + AS3722_GPIO_MODE_MASK, mode); } static const struct pinmux_ops as3722_pinmux_ops = { @@ -496,10 +493,18 @@ static void as3722_gpio_set(struct gpio_chip *chip, unsigned offset, { struct as3722_pctrl_info *as_pci = to_as_pci(chip); struct as3722 *as3722 = as_pci->as3722; - int en_invert = as_pci->gpio_control[offset].enable_gpio_invert; + int en_invert; u32 val; int ret; + ret = as3722_read(as3722, AS3722_GPIOn_CONTROL_REG(offset), &val); + if (ret < 0) { + dev_err(as_pci->dev, + "GPIO_CONTROL%d_REG read failed: %d\n", offset, ret); + return; + } + en_invert = !!(val & AS3722_GPIO_INV); + if (value) val = (en_invert) ? 0 : AS3722_GPIOn_SIGNAL(offset); else From 311ab8e1c28659e16a6fe14a68929c3ced4a5757 Mon Sep 17 00:00:00 2001 From: Bob Copeland Date: Wed, 16 Apr 2014 08:32:41 -0400 Subject: [PATCH 235/623] mac80211: fixup radiotap tx flags for RTS/CTS When using RTS/CTS, the CTS-to-Self bit in radiotap TX flags is getting set instead of the RTS bit. Set the correct one. Reported-by: Larry Maxwell Signed-off-by: Bob Copeland Signed-off-by: Johannes Berg --- net/mac80211/status.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 00ba90b02ab2..60cb7a665976 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -314,10 +314,9 @@ ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, !is_multicast_ether_addr(hdr->addr1)) txflags |= IEEE80211_RADIOTAP_F_TX_FAIL; - if ((info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) || - (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT)) + if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) txflags |= IEEE80211_RADIOTAP_F_TX_CTS; - else if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) + if (info->status.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) txflags |= IEEE80211_RADIOTAP_F_TX_RTS; put_unaligned_le16(txflags, pos); From 838977f0178334bf3d7f3e974ea3154b68979be0 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 11 Apr 2014 11:25:40 +0100 Subject: [PATCH 236/623] arm64: __NR_compat_syscalls fix This fixes commit 6290b53de025 (arm64: compat: Wire up new AArch32 syscalls) which did not update __NR_compat_syscalls accordingly. Signed-off-by: Miklos Szeredi Cc: # 3.14+ Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/unistd32.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index bb8eb8a78e67..faa0e1ce59df 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -404,7 +404,7 @@ __SYSCALL(379, sys_finit_module) __SYSCALL(380, sys_sched_setattr) __SYSCALL(381, sys_sched_getattr) -#define __NR_compat_syscalls 379 +#define __NR_compat_syscalls 382 /* * Compat syscall numbers used by the AArch64 kernel. From 40732b369a715e2d17e7c0c9997a5b89ad666168 Mon Sep 17 00:00:00 2001 From: Hanjun Guo Date: Thu, 3 Apr 2014 12:16:49 +0100 Subject: [PATCH 237/623] ARM64: Remove duplicated Kconfig entry for "kernel/power/Kconfig" There is a duplicated Kconfig entry for "kernel/power/Kconfig" in menu "Power management options" and "CPU Power Management", remove the one from menu "CPU Power Management" suggested by Viresh. Signed-off-by: Hanjun Guo Reviewed-by: Viresh Kumar Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e6e4d3749a6e..e759af5d7098 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -323,8 +323,6 @@ menu "CPU Power Management" source "drivers/cpuidle/Kconfig" -source "kernel/power/Kconfig" - source "drivers/cpufreq/Kconfig" endmenu From 8834d3608cc516f13e2e510f4057c263f3d2ce42 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Thu, 17 Apr 2014 11:08:47 +0200 Subject: [PATCH 238/623] rt2x00: fix beaconing on USB When disable beaconing we clear register with beacon and newer set it back, what make we stop send beacons infinitely. Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00mac.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index ddeb5a709aa3..a87ee9b6585a 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -620,21 +620,19 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, bss_conf->bssid); - /* - * Update the beacon. This is only required on USB devices. PCI - * devices fetch beacons periodically. - */ - if (changes & BSS_CHANGED_BEACON && rt2x00_is_usb(rt2x00dev)) - rt2x00queue_update_beacon(rt2x00dev, vif); - /* * Start/stop beaconing. */ if (changes & BSS_CHANGED_BEACON_ENABLED) { if (!bss_conf->enable_beacon && intf->enable_beacon) { - rt2x00queue_clear_beacon(rt2x00dev, vif); rt2x00dev->intf_beaconing--; intf->enable_beacon = false; + /* + * Clear beacon in the H/W for this vif. This is needed + * to disable beaconing on this particular interface + * and keep it running on other interfaces. + */ + rt2x00queue_clear_beacon(rt2x00dev, vif); if (rt2x00dev->intf_beaconing == 0) { /* @@ -645,11 +643,15 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, rt2x00queue_stop_queue(rt2x00dev->bcn); mutex_unlock(&intf->beacon_skb_mutex); } - - } else if (bss_conf->enable_beacon && !intf->enable_beacon) { rt2x00dev->intf_beaconing++; intf->enable_beacon = true; + /* + * Upload beacon to the H/W. This is only required on + * USB devices. PCI devices fetch beacons periodically. + */ + if (rt2x00_is_usb(rt2x00dev)) + rt2x00queue_update_beacon(rt2x00dev, vif); if (rt2x00dev->intf_beaconing == 1) { /* From 929f84b975448db900f3463000fafcd021ed261a Mon Sep 17 00:00:00 2001 From: Gertjan van Wingerde Date: Sat, 19 Apr 2014 19:48:31 +0200 Subject: [PATCH 239/623] rt2x00: Remove myself as maintainer. Let's formalize what must have been blatantly clear from my level of activity is the past year(s). I simply do not have time for this anymore. Signed-off-by: Gertjan van Wingerde Acked-by: Helmut Schaa Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- MAINTAINERS | 1 - 1 file changed, 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 6dc67b1fdb50..a80a586cbdcd 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7277,7 +7277,6 @@ F: drivers/video/aty/aty128fb.c RALINK RT2X00 WIRELESS LAN DRIVER P: rt2x00 project M: Ivo van Doorn -M: Gertjan van Wingerde M: Helmut Schaa L: linux-wireless@vger.kernel.org L: users@rt2x00.serialmonkey.com (moderated for non-subscribers) From 328e203fc35f0b4f6df1c4943f74cf553bcc04f8 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 21 Apr 2014 17:38:44 +0100 Subject: [PATCH 240/623] rtlwifi: rtl8188ee: initialize packet_beacon static code analysis from cppcheck reports: [drivers/net/wireless/rtlwifi/rtl8188ee/trx.c:322]: (error) Uninitialized variable: packet_beacon packet_beacon is not initialized and hence packet_beacon contains garbage from the stack, so set it to false. Signed-off-by: Colin Ian King Cc: Stable [3.10+] Acked-by: Larry Finger Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8188ee/trx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/rtlwifi/rtl8188ee/trx.c b/drivers/net/wireless/rtlwifi/rtl8188ee/trx.c index 06ef47cd6203..5b4c225396f2 100644 --- a/drivers/net/wireless/rtlwifi/rtl8188ee/trx.c +++ b/drivers/net/wireless/rtlwifi/rtl8188ee/trx.c @@ -293,7 +293,7 @@ static void _rtl88ee_translate_rx_signal_stuff(struct ieee80211_hw *hw, u8 *psaddr; __le16 fc; u16 type, ufc; - bool match_bssid, packet_toself, packet_beacon, addr; + bool match_bssid, packet_toself, packet_beacon = false, addr; tmp_buf = skb->data + pstatus->rx_drvinfo_size + pstatus->rx_bufshift; From 3a758134e66ca74a9df792616b5288b2fa2cfd7f Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Mon, 21 Apr 2014 16:14:56 -0700 Subject: [PATCH 241/623] ath9k: fix possible hang on flush If a flush is requested, make sure to clear the descriptor once we've processed it. This resolves a hang that will occur if all RX descriptors are full when a flush is requested. Signed-off-by: Tim Harvey Acked-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/recv.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 6c9accdb52e4..e77a2536b818 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -1113,14 +1113,13 @@ requeue_drop_frag: } requeue: list_add_tail(&bf->list, &sc->rx.rxbuf); - if (flush) - continue; if (edma) { ath_rx_edma_buf_link(sc, qtype); } else { ath_rx_buf_relink(sc, bf); - ath9k_hw_rxena(ah); + if (!flush) + ath9k_hw_rxena(ah); } } while (1); From c82552c5b0cb1735dbcbad78b1ffc6d3c212dc56 Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Mon, 21 Apr 2014 16:14:57 -0700 Subject: [PATCH 242/623] ath9k: add a recv budget Implement a recv budget so that in cases of high traffic we still allow other taskets to get processed. Without this, we can encounter a host of issues during high wireless traffic reception depending on system load including rcu stall's detected (ARM), soft lockups, failure to service critical tasks such as watchdog resets, and triggering of the tx stuck tasklet. The same thing was proposed previously by Ben: http://www.spinics.net/lists/linux-wireless/msg112891.html The only difference here is that I make sure only processed packets are counted in the budget by checking at the end of the rx loop. Signed-off-by: Tim Harvey Acked-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/recv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index e77a2536b818..19df969ec909 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -975,6 +975,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp) u64 tsf = 0; unsigned long flags; dma_addr_t new_buf_addr; + unsigned int budget = 512; if (edma) dma_type = DMA_BIDIRECTIONAL; @@ -1121,6 +1122,9 @@ requeue: if (!flush) ath9k_hw_rxena(ah); } + + if (!budget--) + break; } while (1); if (!(ah->imask & ATH9K_INT_RXEOL)) { From 95e9ee92e20162681e9f65c25962e0606db9d149 Mon Sep 17 00:00:00 2001 From: Wenkai Du Date: Tue, 22 Apr 2014 16:38:54 +0300 Subject: [PATCH 243/623] ASoC: Intel: Fix audio crash due to negative address offset There were occasional ADSP crash during reboot testing: [ 11.883364] BUG: unable to handle kernel paging request at ffffc90121700000 [ 11.883380] IP: [] sst_module_insert_fixed_block+0x24f/0x26d [snd_soc_sst_dsp] [ 11.883397] PGD 7800b067 PUD 0 [ 11.883405] Oops: 0002 [#1] SMP [ 11.886418] gsmi: Log Shutdown Reason 0x03 The virtual address, ffffc90121700000, was out of range. The virtual address is calculated by adding LPE base address with an offset: sst_memcpy32(dsp->addr.lpe + data->offset, data->data, data->size); The offset is calculated in sst_byt_parse_module, by subtraction of two virtual addresses dsp->addr.fw_ext and dsp->addr.lpe: block_data.offset = block->ram_offset + (dsp->addr.fw_ext - dsp->addr.lpe); These virtual addresses are assigned by kernel from ioremap: sst->addr.lpe = ioremap(pdata->lpe_base, pdata->lpe_size); sst->addr.fw_ext = ioremap(pdata->fw_base, pdata->fw_size); In current driver code, offset is defined as unsigned int32: struct sst_module_data { ... u32 offset; /* offset in FW file */ }; Most of the time kernel assigned virtual addresses with addr.fw_ext greater than addr.lpe. But sometimes it was the other way round. Fix the problem by declaring offset as signed int32_t. Signed-off-by: Wenkai Du Signed-off-by: Jarkko Nikula Signed-off-by: Mark Brown --- sound/soc/intel/sst-dsp-priv.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/intel/sst-dsp-priv.h b/sound/soc/intel/sst-dsp-priv.h index fe8e81aad646..30ca14a6a835 100644 --- a/sound/soc/intel/sst-dsp-priv.h +++ b/sound/soc/intel/sst-dsp-priv.h @@ -136,7 +136,7 @@ struct sst_module_data { enum sst_data_type data_type; /* type of module data */ u32 size; /* size in bytes */ - u32 offset; /* offset in FW file */ + int32_t offset; /* offset in FW file */ u32 data_offset; /* offset in ADSP memory space */ void *data; /* module data */ }; From 1b17844b29ae042576bea588164f2f1e9590a8bc Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 22 Apr 2014 13:49:40 -0700 Subject: [PATCH 244/623] mm: make fixup_user_fault() check the vma access rights too fixup_user_fault() is used by the futex code when the direct user access fails, and the futex code wants it to either map in the page in a usable form or return an error. It relied on handle_mm_fault() to map the page, and correctly checked the error return from that, but while that does map the page, it doesn't actually guarantee that the page will be mapped with sufficient permissions to be then accessed. So do the appropriate tests of the vma access rights by hand. [ Side note: arguably handle_mm_fault() could just do that itself, but we have traditionally done it in the caller, because some callers - notably get_user_pages() - have been able to access pages even when they are mapped with PROT_NONE. Maybe we should re-visit that design decision, but in the meantime this is the minimal patch. ] Found by Dave Jones running his trinity tool. Reported-by: Dave Jones Acked-by: Hugh Dickins Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- mm/memory.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/memory.c b/mm/memory.c index d0f0bef3be48..93e332d5ed77 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1955,12 +1955,17 @@ int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, unsigned long address, unsigned int fault_flags) { struct vm_area_struct *vma; + vm_flags_t vm_flags; int ret; vma = find_extend_vma(mm, address); if (!vma || address < vma->vm_start) return -EFAULT; + vm_flags = (fault_flags & FAULT_FLAG_WRITE) ? VM_WRITE : VM_READ; + if (!(vm_flags & vma->vm_flags)) + return -EFAULT; + ret = handle_mm_fault(mm, vma, address, fault_flags); if (ret & VM_FAULT_ERROR) { if (ret & VM_FAULT_OOM) From eebdec044e82a4c694b7c1f4996e3ab82d64482c Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 22 Apr 2014 22:46:31 +0200 Subject: [PATCH 245/623] ASoC: jz4740: Remove Makefile entry for removed file Commit 0406a40a0 ("ASoC: jz4740: Use the generic dmaengine PCM driver") jz4740-pcm.c file, but neglected to remove the Makefile entries. Fixes: 0406a40a0 ("ASoC: jz4740: Use the generic dmaengine PCM driver") Reported-by: kbuild test robot Reported-by: Ralf Baechle Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- sound/soc/jz4740/Makefile | 2 -- 1 file changed, 2 deletions(-) diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile index be873c1b0c20..d32c540555c4 100644 --- a/sound/soc/jz4740/Makefile +++ b/sound/soc/jz4740/Makefile @@ -1,10 +1,8 @@ # # Jz4740 Platform Support # -snd-soc-jz4740-objs := jz4740-pcm.o snd-soc-jz4740-i2s-objs := jz4740-i2s.o -obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o # Jz4740 Machine Support From 80bb3ef109ff40a7593d9481c17de9bbc4d7c0e2 Mon Sep 17 00:00:00 2001 From: Xiangyu Lu Date: Tue, 15 Apr 2014 09:38:17 +0100 Subject: [PATCH 246/623] ARM: 8027/1: fix do_div() bug in big-endian systems In big-endian systems, "%1" get the most significant part of the value, cause the instruction to get the wrong result. When viewing ftrace record in big-endian ARM systems, we found that the timestamp errors: swapper-0 [001] 1325.970000: 0:120:R ==> [001] 16:120:R events/1 events/1-16 [001] 1325.970000: 16:120:S ==> [001] 0:120:R swapper swapper-0 [000] 1325.1000000: 0:120:R + [000] 15:120:R events/0 swapper-0 [000] 1325.1000000: 0:120:R ==> [000] 15:120:R events/0 swapper-0 [000] 1326.030000: 0:120:R + [000] 1150:120:R sshd swapper-0 [000] 1326.030000: 0:120:R ==> [000] 1150:120:R sshd When viewed ftrace records, it will call the do_div(n, base) function, which achieved arch/arm/include/asm/div64.h in. When n = 10000000, base = 1000000, in do_div(n, base) will execute "umull %Q0, %R0, %1, %Q2". Reviewed-by: Dave Martin Reviewed-by: Nicolas Pitre Cc: # 2.6.20+ Signed-off-by: Alex Wu Signed-off-by: Xiangyu Lu Signed-off-by: Russell King --- arch/arm/include/asm/div64.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/include/asm/div64.h b/arch/arm/include/asm/div64.h index 191ada6e4d2d..662c7bd06108 100644 --- a/arch/arm/include/asm/div64.h +++ b/arch/arm/include/asm/div64.h @@ -156,7 +156,7 @@ /* Select the best insn combination to perform the */ \ /* actual __m * __n / (__p << 64) operation. */ \ if (!__c) { \ - asm ( "umull %Q0, %R0, %1, %Q2\n\t" \ + asm ( "umull %Q0, %R0, %Q1, %Q2\n\t" \ "mov %Q0, #0" \ : "=&r" (__res) \ : "r" (__m), "r" (__n) \ From 56b700fd6f1e49149880fb1b6ffee0dca5be45fb Mon Sep 17 00:00:00 2001 From: Liu Hua Date: Fri, 18 Apr 2014 07:45:36 +0100 Subject: [PATCH 247/623] ARM: 8030/1: ARM : kdump : add arch_crash_save_vmcoreinfo For vmcore generated by LPAE enabled kernel, user space utility such as crash needs additional infomation to parse. So this patch add arch_crash_save_vmcoreinfo as what PAE enabled i386 linux does. Cc: Reviewed-by: Will Deacon Signed-off-by: Liu Hua Signed-off-by: Russell King --- arch/arm/kernel/machine_kexec.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c index f0d180d8b29f..8cf0996aa1a8 100644 --- a/arch/arm/kernel/machine_kexec.c +++ b/arch/arm/kernel/machine_kexec.c @@ -184,3 +184,10 @@ void machine_kexec(struct kimage *image) soft_restart(reboot_entry_phys); } + +void arch_crash_save_vmcoreinfo(void) +{ +#ifdef CONFIG_ARM_LPAE + VMCOREINFO_CONFIG(ARM_LPAE); +#endif +} From 4530e4b6a450af14973c2b0703edfb02d66cbd41 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Tue, 22 Apr 2014 00:25:35 +0100 Subject: [PATCH 248/623] ARM: 8032/1: bL_switcher: fix validation check before its activation The switcher should not depend on MAX_CLUSTER to determine ifit should be activated or not. In a multiplatform kernel binary it is possible to have dual-cluster and quad-cluster platforms configured in. In that case MAX_CLUSTER which is a build time limit should be 4 and that shouldn't prevent the switcher from working if the kernel is booted on a b.L dual-cluster system. In bL_switcher_halve_cpus() we already have a runtime validation check to make sure we're dealing with only two clusters, so booting on a quad cluster system will be caught and switcher activation aborted. However, the b.L switcher must ensure the MCPM layer is initialized on the booted hardware before doing anything. The mcpm_is_available() function is added to that effect. Signed-off-by: Nicolas Pitre Tested-by: Abhilash Kesavan Signed-off-by: Russell King --- arch/arm/common/bL_switcher.c | 6 ++---- arch/arm/common/mcpm_entry.c | 5 +++++ arch/arm/include/asm/mcpm.h | 7 +++++++ 3 files changed, 14 insertions(+), 4 deletions(-) diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c index 5774b6ea7ad5..f01c0ee0c87e 100644 --- a/arch/arm/common/bL_switcher.c +++ b/arch/arm/common/bL_switcher.c @@ -797,10 +797,8 @@ static int __init bL_switcher_init(void) { int ret; - if (MAX_NR_CLUSTERS != 2) { - pr_err("%s: only dual cluster systems are supported\n", __func__); - return -EINVAL; - } + if (!mcpm_is_available()) + return -ENODEV; cpu_notifier(bL_switcher_hotplug_callback, 0); diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index 1e361abc29eb..86fd60fefbc9 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -48,6 +48,11 @@ int __init mcpm_platform_register(const struct mcpm_platform_ops *ops) return 0; } +bool mcpm_is_available(void) +{ + return (platform_ops) ? true : false; +} + int mcpm_cpu_power_up(unsigned int cpu, unsigned int cluster) { if (!platform_ops) diff --git a/arch/arm/include/asm/mcpm.h b/arch/arm/include/asm/mcpm.h index 608516ebabfe..a5ff410dcdb6 100644 --- a/arch/arm/include/asm/mcpm.h +++ b/arch/arm/include/asm/mcpm.h @@ -53,6 +53,13 @@ void mcpm_set_early_poke(unsigned cpu, unsigned cluster, * CPU/cluster power operations API for higher subsystems to use. */ +/** + * mcpm_is_available - returns whether MCPM is initialized and available + * + * This returns true or false accordingly. + */ +bool mcpm_is_available(void); + /** * mcpm_cpu_power_up - make given CPU in given cluster runable * From e3892e9160a6ae40abc45192df30f3e31b6dd0ff Mon Sep 17 00:00:00 2001 From: Victor Kamensky Date: Tue, 22 Apr 2014 02:25:36 +0100 Subject: [PATCH 249/623] ARM: 8033/1: fix big endian __pv_phys_pfn_offset size related issue Fix e26a9e00afc482b971afcaef1db8c9034d4d6d7c 'ARM: Better virt_to_page() handling' replaced __pv_phys_offset with __pv_phys_pfn_offset. Also note that size of __pv_phys_offset was quad but size of __pv_phys_pfn_offset is word. Instruction that used to update __pv_phys_offset which address is in r6 had to update low word of __pv_phys_offset so it used #LOW_OFFSET macro for store offset. Now when size of __pv_phys_pfn_offset is word, no difference between little endian and big endian should exist - i.e no offset should be used when __pv_phys_pfn_offset is stored. Note that for little endian image proposed change is noop, since in little endian case #LOW_OFFSET is defined 0 anyway. Reported-by: Taras Kondratiuk Signed-off-by: Victor Kamensky Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/kernel/head.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index f8c08839edf3..591d6e4a6492 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -587,7 +587,7 @@ __fixup_pv_table: add r6, r6, r3 @ adjust __pv_phys_pfn_offset address add r7, r7, r3 @ adjust __pv_offset address mov r0, r8, lsr #12 @ convert to PFN - str r0, [r6, #LOW_OFFSET] @ save computed PHYS_OFFSET to __pv_phys_pfn_offset + str r0, [r6] @ save computed PHYS_OFFSET to __pv_phys_pfn_offset strcc ip, [r7, #HIGH_OFFSET] @ save to __pv_offset high bits mov r6, r3, lsr #24 @ constant for add/sub instructions teq r3, r6, lsl #24 @ must be 16MiB aligned From 132e9a68a5794ad2e4a3d0c07dfb7133a70b1651 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 15 Apr 2014 11:05:16 -0400 Subject: [PATCH 250/623] Fix: tracing: use 'E' instead of 'X' for unsigned module tain flag In the following commit: commit 57673c2b0baa900dddae3b9eb3d7748ebf550eb3 Author: Rusty Russell Date: Mon Mar 31 14:39:57 2014 +1030 Use 'E' instead of 'X' for unsigned module taint flag. One site has been forgotten in trace events module.h. Signed-off-by: Mathieu Desnoyers CC: Steven Rostedt CC: Rusty Russell Signed-off-by: Rusty Russell --- include/trace/events/module.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/trace/events/module.h b/include/trace/events/module.h index 11fd51b413de..ed0b2c599a64 100644 --- a/include/trace/events/module.h +++ b/include/trace/events/module.h @@ -25,7 +25,7 @@ struct module; { (1UL << TAINT_OOT_MODULE), "O" }, \ { (1UL << TAINT_FORCED_MODULE), "F" }, \ { (1UL << TAINT_CRAP), "C" }, \ - { (1UL << TAINT_UNSIGNED_MODULE), "X" }) + { (1UL << TAINT_UNSIGNED_MODULE), "E" }) TRACE_EVENT(module_load, From 7740fc52105c9e6d2beac389a9ae0ce7138cf5ab Mon Sep 17 00:00:00 2001 From: Lejun Zhu Date: Tue, 22 Apr 2014 22:47:13 -0700 Subject: [PATCH 251/623] Input: soc_button_array - fix a crash during rmmod When the system has zero or one button available, trying to rmmod soc_button_array will cause crash. Fix this by properly handling -ENODEV in probe(). Signed-off-by: Lejun Zhu Signed-off-by: Dmitry Torokhov --- drivers/input/misc/soc_button_array.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c index 08ead2aaede5..20c80f543d5e 100644 --- a/drivers/input/misc/soc_button_array.c +++ b/drivers/input/misc/soc_button_array.c @@ -169,6 +169,7 @@ static int soc_button_pnp_probe(struct pnp_dev *pdev, soc_button_remove(pdev); return error; } + continue; } priv->children[i] = pd; From ae4bedf0679d99f0a9b80a7ea9b8dd205de05d06 Mon Sep 17 00:00:00 2001 From: Jordan Rife Date: Tue, 22 Apr 2014 17:44:51 -0700 Subject: [PATCH 252/623] Input: elantech - add support for newer elantech touchpads Newer elantech touchpads are not recognized by the current driver, since it fails to detect their firmware version number. This prevents more advanced touchpad features from being usable such as two-finger scrolling. This patch allows newer touchpads to be detected and be fully functional. Tested on Sony Vaio SVF13N17PXB. Signed-off-by: Jordan Rife Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/elantech.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index ef1cf52f8bb9..088d3541c7d3 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1353,6 +1353,7 @@ static int elantech_set_properties(struct elantech_data *etd) case 6: case 7: case 8: + case 9: etd->hw_version = 4; break; default: From 9953599bc02dbc1d3330e6a0bfc6c50e9dffcac6 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 13 Apr 2014 12:00:33 +0200 Subject: [PATCH 253/623] drm/i915: Don't check gmch state on inherited configs ... our current modeset code isn't good enough yet to handle this. The scenario is: 1. BIOS sets up a cloned config with lvds+external screen on the same pipe, e.g. pipe B. 2. We read out that state for pipe B and assign the gmch_pfit state to it. 3. The initial modeset switches the lvds to pipe A but due to lack of atomic modeset we don't recompute the config of pipe B. -> both pipes now claim (in the sw pipe config structure) to use the gmch_pfit, which just won't work. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74081 Tested-by: max Cc: Alan Stern Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_display.c | 23 ++++++++++++++++++----- drivers/gpu/drm/i915/intel_drv.h | 3 ++- 2 files changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index dae976f51d83..69bcc42a0e44 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9654,11 +9654,22 @@ intel_pipe_config_compare(struct drm_device *dev, PIPE_CONF_CHECK_I(pipe_src_w); PIPE_CONF_CHECK_I(pipe_src_h); - PIPE_CONF_CHECK_I(gmch_pfit.control); - /* pfit ratios are autocomputed by the hw on gen4+ */ - if (INTEL_INFO(dev)->gen < 4) - PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios); - PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits); + /* + * FIXME: BIOS likes to set up a cloned config with lvds+external + * screen. Since we don't yet re-compute the pipe config when moving + * just the lvds port away to another pipe the sw tracking won't match. + * + * Proper atomic modesets with recomputed global state will fix this. + * Until then just don't check gmch state for inherited modes. + */ + if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_INHERITED_MODE)) { + PIPE_CONF_CHECK_I(gmch_pfit.control); + /* pfit ratios are autocomputed by the hw on gen4+ */ + if (INTEL_INFO(dev)->gen < 4) + PIPE_CONF_CHECK_I(gmch_pfit.pgm_ratios); + PIPE_CONF_CHECK_I(gmch_pfit.lvds_border_bits); + } + PIPE_CONF_CHECK_I(pch_pfit.enabled); if (current_config->pch_pfit.enabled) { PIPE_CONF_CHECK_I(pch_pfit.pos); @@ -11616,6 +11627,8 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev) base.head) { memset(&crtc->config, 0, sizeof(crtc->config)); + crtc->config.quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE; + crtc->active = dev_priv->display.get_pipe_config(crtc, &crtc->config); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 0542de982260..328b1a70264b 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -236,7 +236,8 @@ struct intel_crtc_config { * tracked with quirk flags so that fastboot and state checker can act * accordingly. */ -#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS (1<<0) /* unreliable sync mode.flags */ +#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS (1<<0) /* unreliable sync mode.flags */ +#define PIPE_CONFIG_QUIRK_INHERITED_MODE (1<<1) /* mode inherited from firmware */ unsigned long quirks; /* User requested mode, only valid as a starting point to From 636352173a0dd127636fe331c97b117a8004bf50 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 22 Apr 2014 19:55:42 -0300 Subject: [PATCH 254/623] drm/i915: get power domain in case the BIOS enabled eDP VDD If I unplug the eDP monitor, the BIOS of my machine will enable the VDD bit, then when the driver loads it will think VDD is enabled. It will detect that the eDP is not enabled and return false from intel_edp_init_connector. This will trigger a call to edp_panel_vdd_off_sync(), which trigger a WARN saying that the refcount of the power domain is less than zero. The problem happens because the driver gets a refcount whenever it enables the VDD bit, and puts the refcount whenever it disables the VDD bit. But on this case, the BIOS enabled VDD, so all we do is to call put() without calling get() first, so the code added is there to make sure we always have the get() in case the BIOS enabled the bit. This regression was introduced in commit e9cb81a22841908b1c075156b409a538d09c8466 Author: Paulo Zanoni Date: Thu Nov 21 13:47:23 2013 -0200 drm/i915: get a runtime PM reference when the panel VDD is on v2: - Rebase Tested-by: Chris Wilson (v1) Reviewed-by: Daniel Vetter Cc: stable@vger.kernel.org (v3.13+) Signed-off-by: Paulo Zanoni Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_dp.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index d2a55884ad52..dfa85289f28f 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -3619,7 +3619,8 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, { struct drm_connector *connector = &intel_connector->base; struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp); - struct drm_device *dev = intel_dig_port->base.base.dev; + struct intel_encoder *intel_encoder = &intel_dig_port->base; + struct drm_device *dev = intel_encoder->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; struct drm_display_mode *fixed_mode = NULL; bool has_dpcd; @@ -3629,6 +3630,14 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, if (!is_edp(intel_dp)) return true; + /* The VDD bit needs a power domain reference, so if the bit is already + * enabled when we boot, grab this reference. */ + if (edp_have_panel_vdd(intel_dp)) { + enum intel_display_power_domain power_domain; + power_domain = intel_display_port_power_domain(intel_encoder); + intel_display_power_get(dev_priv, power_domain); + } + /* Cache DPCD and EDID for edp. */ intel_edp_panel_vdd_on(intel_dp); has_dpcd = intel_dp_get_dpcd(intel_dp); From 51aaf81fae8bf89b6bd277a244b5b43db9c730a0 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 22 Apr 2014 22:26:27 +0100 Subject: [PATCH 255/623] ARM: keep arch/arm/Kconfig and arch/arm/mm/Kconfig select entries sorted Signed-off-by: Russell King --- arch/arm/Kconfig | 10 +++++----- arch/arm/mm/Kconfig | 8 ++++---- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ab438cb5af55..53e99eb543d9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -30,9 +30,9 @@ config ARM select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT) select HAVE_ARCH_TRACEHOOK select HAVE_BPF_JIT + select HAVE_CC_STACKPROTECTOR select HAVE_CONTEXT_TRACKING select HAVE_C_RECORDMCOUNT - select HAVE_CC_STACKPROTECTOR select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_API_DEBUG select HAVE_DMA_ATTRS @@ -422,8 +422,8 @@ config ARCH_EFM32 bool "Energy Micro efm32" depends on !MMU select ARCH_REQUIRE_GPIOLIB - select AUTO_ZRELADDR select ARM_NVIC + select AUTO_ZRELADDR select CLKSRC_OF select COMMON_CLK select CPU_V7M @@ -511,8 +511,8 @@ config ARCH_IXP4XX bool "IXP4xx-based" depends on MMU select ARCH_HAS_DMA_SET_COHERENT_MASK - select ARCH_SUPPORTS_BIG_ENDIAN select ARCH_REQUIRE_GPIOLIB + select ARCH_SUPPORTS_BIG_ENDIAN select CLKSRC_MMIO select CPU_XSCALE select DMABOUNCE if PCI @@ -1575,8 +1575,8 @@ config BIG_LITTLE config BL_SWITCHER bool "big.LITTLE switcher support" depends on BIG_LITTLE && MCPM && HOTPLUG_CPU - select CPU_PM select ARM_CPU_SUSPEND + select CPU_PM help The big.LITTLE "switcher" provides the core functionality to transparently handle transition between a cluster of A15's @@ -1920,9 +1920,9 @@ config XEN depends on CPU_V7 && !CPU_V6 depends on !GENERIC_ATOMIC64 depends on MMU + select ARCH_DMA_ADDR_T_64BIT select ARM_PSCI select SWIOTLB_XEN - select ARCH_DMA_ADDR_T_64BIT help Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index f5ad9ee70426..5bf7c3c3b301 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -420,29 +420,29 @@ config CPU_32v3 bool select CPU_USE_DOMAINS if MMU select NEEDS_SYSCALL_FOR_CMPXCHG if SMP - select TLS_REG_EMUL if SMP || !MMU select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v4 bool select CPU_USE_DOMAINS if MMU select NEEDS_SYSCALL_FOR_CMPXCHG if SMP - select TLS_REG_EMUL if SMP || !MMU select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v4T bool select CPU_USE_DOMAINS if MMU select NEEDS_SYSCALL_FOR_CMPXCHG if SMP - select TLS_REG_EMUL if SMP || !MMU select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v5 bool select CPU_USE_DOMAINS if MMU select NEEDS_SYSCALL_FOR_CMPXCHG if SMP - select TLS_REG_EMUL if SMP || !MMU select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v6 bool From c46a98ab1045565db6d858b628fbfde80f05281a Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 11 Apr 2014 11:25:41 +0100 Subject: [PATCH 256/623] arm64: add renameat2 compat syscall Wire up the renameat2 syscall for compat (AArch32) applications. Signed-off-by: Miklos Szeredi Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/unistd32.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h index faa0e1ce59df..c8d8fc17bd5a 100644 --- a/arch/arm64/include/asm/unistd32.h +++ b/arch/arm64/include/asm/unistd32.h @@ -403,8 +403,9 @@ __SYSCALL(378, sys_kcmp) __SYSCALL(379, sys_finit_module) __SYSCALL(380, sys_sched_setattr) __SYSCALL(381, sys_sched_getattr) +__SYSCALL(382, sys_renameat2) -#define __NR_compat_syscalls 382 +#define __NR_compat_syscalls 383 /* * Compat syscall numbers used by the AArch64 kernel. From 556d3f7f4d791cae54fd24ef28296e666f4c96a6 Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Fri, 11 Apr 2014 12:25:39 +0200 Subject: [PATCH 257/623] ARM: add renameat2 syscall Signed-off-by: Miklos Szeredi [dropped arch/arm/include/asm/unistd.h changes --rmk] Signed-off-by: Russell King --- arch/arm/include/uapi/asm/unistd.h | 1 + arch/arm/kernel/calls.S | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index fb5584d0cc05..ba94446c72d9 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -408,6 +408,7 @@ #define __NR_finit_module (__NR_SYSCALL_BASE+379) #define __NR_sched_setattr (__NR_SYSCALL_BASE+380) #define __NR_sched_getattr (__NR_SYSCALL_BASE+381) +#define __NR_renameat2 (__NR_SYSCALL_BASE+382) /* * This may need to be greater than __NR_last_syscall+1 in order to diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 166e945de832..8f51bdcdacbb 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -391,6 +391,7 @@ CALL(sys_finit_module) /* 380 */ CALL(sys_sched_setattr) CALL(sys_sched_getattr) + CALL(sys_renameat2) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted From 763d7f5f2718f085bab5a9e63308349728f3ad12 Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Sun, 20 Apr 2014 00:16:41 +0900 Subject: [PATCH 258/623] perf tests x86: Fix memory leak in sample_ustack() The buf is not freed, when kernel failed to get stack map and return. Signed-off-by: Masanari Iida Link: http://lkml.kernel.org/r/1398091024-7901-1-git-send-email-standby24x7@gmail.com Signed-off-by: Jiri Olsa --- tools/perf/arch/x86/tests/dwarf-unwind.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c index b602ad93ce63..b8c0102c70c8 100644 --- a/tools/perf/arch/x86/tests/dwarf-unwind.c +++ b/tools/perf/arch/x86/tests/dwarf-unwind.c @@ -26,6 +26,7 @@ static int sample_ustack(struct perf_sample *sample, map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp); if (!map) { pr_debug("failed to get stack map\n"); + free(buf); return -1; } From 4dc549e58b6ebf63554cd466d5ceb0e9c70ab859 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 20 Apr 2014 10:50:00 +0200 Subject: [PATCH 259/623] perf tools: Disable libdw unwind for all but x86 arch So far there's only x86 libdw unwind support merged in perf. Disable it on all other architectures in case libdw unwind support is detected in system. Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jean Pihet Cc: Josh Boyer Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1397988006-14158-1-git-send-email-jolsa@redhat.com Signed-off-by: Jiri Olsa --- tools/perf/config/Makefile | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index ee21fa95ebcf..a71fb395e38f 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -34,6 +34,14 @@ ifeq ($(ARCH),arm) LIBUNWIND_LIBS = -lunwind -lunwind-arm endif +# So far there's only x86 libdw unwind support merged in perf. +# Disable it on all other architectures in case libdw unwind +# support is detected in system. Add supported architectures +# to the check. +ifneq ($(ARCH),x86) + NO_LIBDW_DWARF_UNWIND := 1 +endif + ifeq ($(LIBUNWIND_LIBS),) NO_LIBUNWIND := 1 else From 4508793541140723ab862d83095f6b5141d24e49 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 21 Apr 2014 22:23:46 -0400 Subject: [PATCH 260/623] tools lib traceevent: Fix backward compatibility macros for pevent filter enums The return value for pevent_filter_match() is suppose to return FILTER_NONE if the event doesn't have a filter, and FILTER_NOEXIST if there is no filter at all. But the change 41e12e580a7 "tools lib traceevent: Refactor pevent_filter_match() to get rid of die()" replaced the return value with PEVENT_ERRNO__* values and added "backward compatibility" macros that used the old names. Unfortunately, the NOEXIST and NONE macros were swapped, and this broke users that use the old return names. Signed-off-by: Steven Rostedt Link: http://lkml.kernel.org/r/20140421222346.0351ced4@gandalf.local.home Signed-off-by: Jiri Olsa --- tools/lib/traceevent/event-parse.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index 791c539374c7..feab94281634 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -876,8 +876,8 @@ struct event_filter { struct event_filter *pevent_filter_alloc(struct pevent *pevent); /* for backward compatibility */ -#define FILTER_NONE PEVENT_ERRNO__FILTER_NOT_FOUND -#define FILTER_NOEXIST PEVENT_ERRNO__NO_FILTER +#define FILTER_NONE PEVENT_ERRNO__NO_FILTER +#define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND #define FILTER_MISS PEVENT_ERRNO__FILTER_MISS #define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH From de04f8657de9d3351a2d5880f1f7080b23b798cf Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 22 Apr 2014 19:23:30 -0400 Subject: [PATCH 261/623] tools lib traceevent: Fix memory leak in pretty_print() Commit 12e55569a244 "tools lib traceevent: Use helper trace-seq in print functions like kernel does" added a extra trace_seq helper to process string arguments like the kernel does it. But the difference between the kernel and the userspace library is that the kernel's trace_seq structure has a static allocated buffer. The userspace one has a dynamically allocated one. It requires a trace_seq_destroy(), otherwise it produces a nasty memory leak. Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Steven Rostedt Link: http://lkml.kernel.org/r/20140422192330.6bb09bf8@gandalf.local.home Signed-off-by: Jiri Olsa --- tools/lib/traceevent/event-parse.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c index baec7d887da4..b83184f2d484 100644 --- a/tools/lib/traceevent/event-parse.c +++ b/tools/lib/traceevent/event-parse.c @@ -4344,6 +4344,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event format, len_arg, arg); trace_seq_terminate(&p); trace_seq_puts(s, p.buffer); + trace_seq_destroy(&p); arg = arg->next; break; default: From ae107d06137ce210ea21d1423443d3638599f297 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 22 Apr 2014 20:40:25 +0200 Subject: [PATCH 262/623] dt: Fix binding typos in clock-names and interrupt-names s/interrupts-names/interrupt-names/g s/clocks-names/clock-names/g Some of the binding files and device tree files get this wrong and the kernel won't be able to pick it up. Fix them up now so that they don't get widely used. Signed-off-by: Geert Uytterhoeven Acked-by : Patrice Chotard Signed-off-by: Grant Likely --- .../devicetree/bindings/net/socfpga-dwmac.txt | 2 +- Documentation/devicetree/bindings/net/stmmac.txt | 2 +- .../devicetree/bindings/pinctrl/pinctrl-st.txt | 4 ++-- .../devicetree/bindings/sound/davinci-mcasp-audio.txt | 2 +- arch/arm/boot/dts/am33xx.dtsi | 4 ++-- arch/arm/boot/dts/am4372.dtsi | 4 ++-- arch/arm/boot/dts/stih415-pinctrl.dtsi | 10 +++++----- arch/arm/boot/dts/stih416-pinctrl.dtsi | 10 +++++----- drivers/of/irq.c | 2 +- 9 files changed, 20 insertions(+), 20 deletions(-) diff --git a/Documentation/devicetree/bindings/net/socfpga-dwmac.txt b/Documentation/devicetree/bindings/net/socfpga-dwmac.txt index 636f0ac4e223..2a60cd3e8d5d 100644 --- a/Documentation/devicetree/bindings/net/socfpga-dwmac.txt +++ b/Documentation/devicetree/bindings/net/socfpga-dwmac.txt @@ -23,5 +23,5 @@ gmac0: ethernet@ff700000 { interrupt-names = "macirq"; mac-address = [00 00 00 00 00 00];/* Filled in by U-Boot */ clocks = <&emac_0_clk>; - clocks-names = "stmmaceth"; + clock-names = "stmmaceth"; }; diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt index 80c1fb8bfbb8..a2acd2b26baf 100644 --- a/Documentation/devicetree/bindings/net/stmmac.txt +++ b/Documentation/devicetree/bindings/net/stmmac.txt @@ -33,7 +33,7 @@ Optional properties: - max-frame-size: See ethernet.txt file in the same directory - clocks: If present, the first clock should be the GMAC main clock, further clocks may be specified in derived bindings. -- clocks-names: One name for each entry in the clocks property, the +- clock-names: One name for each entry in the clocks property, the first one should be "stmmaceth". Examples: diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt index 4bd5be0e5e7d..26bcb18f4e60 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt @@ -83,7 +83,7 @@ Example: reg = <0xfe61f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfe610000 0x5000>; PIO0: gpio@fe610000 { @@ -165,7 +165,7 @@ sdhci0:sdhci@fe810000{ interrupt-parent = <&PIO3>; #interrupt-cells = <2>; interrupts = <3 IRQ_TYPE_LEVEL_HIGH>; /* Interrupt line via PIO3-3 */ - interrupts-names = "card-detect"; + interrupt-names = "card-detect"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_mmc>; }; diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt index 569b26c4a81e..60ca07996458 100644 --- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt +++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt @@ -47,7 +47,7 @@ mcasp0: mcasp0@1d00000 { reg = <0x100000 0x3000>; reg-names "mpu"; interrupts = <82>, <83>; - interrupts-names = "tx", "rx"; + interrupt-names = "tx", "rx"; op-mode = <0>; /* MCASP_IIS_MODE */ tdm-slots = <2>; serial-dir = < diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi index 9770e35f2536..3bce3c9dbd24 100644 --- a/arch/arm/boot/dts/am33xx.dtsi +++ b/arch/arm/boot/dts/am33xx.dtsi @@ -802,7 +802,7 @@ <0x46000000 0x400000>; reg-names = "mpu", "dat"; interrupts = <80>, <81>; - interrupts-names = "tx", "rx"; + interrupt-names = "tx", "rx"; status = "disabled"; dmas = <&edma 8>, <&edma 9>; @@ -816,7 +816,7 @@ <0x46400000 0x400000>; reg-names = "mpu", "dat"; interrupts = <82>, <83>; - interrupts-names = "tx", "rx"; + interrupt-names = "tx", "rx"; status = "disabled"; dmas = <&edma 10>, <&edma 11>; diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi index 36d523a26831..d1f8707ff1df 100644 --- a/arch/arm/boot/dts/am4372.dtsi +++ b/arch/arm/boot/dts/am4372.dtsi @@ -691,7 +691,7 @@ <0x46000000 0x400000>; reg-names = "mpu", "dat"; interrupts = <80>, <81>; - interrupts-names = "tx", "rx"; + interrupt-names = "tx", "rx"; status = "disabled"; dmas = <&edma 8>, <&edma 9>; @@ -705,7 +705,7 @@ <0x46400000 0x400000>; reg-names = "mpu", "dat"; interrupts = <82>, <83>; - interrupts-names = "tx", "rx"; + interrupt-names = "tx", "rx"; status = "disabled"; dmas = <&edma 10>, <&edma 11>; diff --git a/arch/arm/boot/dts/stih415-pinctrl.dtsi b/arch/arm/boot/dts/stih415-pinctrl.dtsi index f09fb10a3791..81df870e5ee6 100644 --- a/arch/arm/boot/dts/stih415-pinctrl.dtsi +++ b/arch/arm/boot/dts/stih415-pinctrl.dtsi @@ -49,7 +49,7 @@ reg = <0xfe61f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfe610000 0x5000>; PIO0: gpio@fe610000 { @@ -187,7 +187,7 @@ reg = <0xfee0f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfee00000 0x8000>; PIO5: gpio@fee00000 { @@ -282,7 +282,7 @@ reg = <0xfe82f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfe820000 0x8000>; PIO13: gpio@fe820000 { @@ -423,7 +423,7 @@ reg = <0xfd6bf080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfd6b0000 0x3000>; PIO100: gpio@fd6b0000 { @@ -460,7 +460,7 @@ reg = <0xfd33f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfd330000 0x5000>; PIO103: gpio@fd330000 { diff --git a/arch/arm/boot/dts/stih416-pinctrl.dtsi b/arch/arm/boot/dts/stih416-pinctrl.dtsi index aeea304086eb..250d5ecc951e 100644 --- a/arch/arm/boot/dts/stih416-pinctrl.dtsi +++ b/arch/arm/boot/dts/stih416-pinctrl.dtsi @@ -53,7 +53,7 @@ reg = <0xfe61f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfe610000 0x6000>; PIO0: gpio@fe610000 { @@ -201,7 +201,7 @@ reg = <0xfee0f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfee00000 0x10000>; PIO5: gpio@fee00000 { @@ -333,7 +333,7 @@ reg = <0xfe82f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfe820000 0x6000>; PIO13: gpio@fe820000 { @@ -461,7 +461,7 @@ reg = <0xfd6bf080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfd6b0000 0x3000>; PIO100: gpio@fd6b0000 { @@ -498,7 +498,7 @@ reg = <0xfd33f080 0x4>; reg-names = "irqmux"; interrupts = ; - interrupts-names = "irqmux"; + interrupt-names = "irqmux"; ranges = <0 0xfd330000 0x5000>; PIO103: gpio@fd330000 { diff --git a/drivers/of/irq.c b/drivers/of/irq.c index 9bcf2cf19357..e2e4c548a42f 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -364,7 +364,7 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) memset(r, 0, sizeof(*r)); /* - * Get optional "interrupts-names" property to add a name + * Get optional "interrupt-names" property to add a name * to the resource. */ of_property_read_string_index(dev, "interrupt-names", index, From 59f0f119e85cfb173db518328b55efbac4087c9f Mon Sep 17 00:00:00 2001 From: Ritesh Harjani Date: Mon, 21 Apr 2014 12:17:27 +0530 Subject: [PATCH 263/623] arm: dma-mapping: Fix mapping size value 68efd7d2fb("arm: dma-mapping: remove order parameter from arm_iommu_create_mapping()") is causing kernel panic because it wrongly sets the value of mapping->size: Unable to handle kernel NULL pointer dereference at virtual address 000000a0 pgd = e7a84000 [000000a0] *pgd=00000000 ... PC is at bitmap_clear+0x48/0xd0 LR is at __iommu_remove_mapping+0x130/0x164 Fix it by correcting mapping->size value. Signed-off-by: Ritesh Harjani Acked-by: Laurent Pinchart Signed-off-by: Marek Szyprowski --- arch/arm/mm/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index f62aa0677e5c..6b00be1f971e 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1963,8 +1963,8 @@ arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size) mapping->nr_bitmaps = 1; mapping->extensions = extensions; mapping->base = base; - mapping->size = bitmap_size << PAGE_SHIFT; mapping->bits = BITS_PER_BYTE * bitmap_size; + mapping->size = mapping->bits << PAGE_SHIFT; spin_lock_init(&mapping->lock); From 58968625c496c2e39545781915dbb848b38bd249 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 10 Apr 2014 16:47:19 -0700 Subject: [PATCH 264/623] pinctrl: single: Clear pin interrupts enabled by bootloader Since we set up device wake-up interrupts as pinctrl-single interrupts, we now must use the standard request_irq and related functions to manage them. If the pin interrupts are enabled for some pins at boot, the wake-up events can show up as constantly pending at least on omaps and will hang the system unless the related device driver clears the event at the device. To fix this, let's clear the interrupt flags during init, and print out a warning so the board maintainers can update their drivers to do proper request_irq for the driver specific wake-up events. Cc: Haojian Zhuang Cc: Linus Walleij Signed-off-by: Tony Lindgren Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-single.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 81075f2a1d3f..2960557bfed9 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -810,6 +810,7 @@ static const struct pinconf_ops pcs_pinconf_ops = { static int pcs_add_pin(struct pcs_device *pcs, unsigned offset, unsigned pin_pos) { + struct pcs_soc_data *pcs_soc = &pcs->socdata; struct pinctrl_pin_desc *pin; struct pcs_name *pn; int i; @@ -821,6 +822,18 @@ static int pcs_add_pin(struct pcs_device *pcs, unsigned offset, return -ENOMEM; } + if (pcs_soc->irq_enable_mask) { + unsigned val; + + val = pcs->read(pcs->base + offset); + if (val & pcs_soc->irq_enable_mask) { + dev_dbg(pcs->dev, "irq enabled at boot for pin at %lx (%x), clearing\n", + (unsigned long)pcs->res->start + offset, val); + val &= ~pcs_soc->irq_enable_mask; + pcs->write(val, pcs->base + offset); + } + } + pin = &pcs->pins.pa[i]; pn = &pcs->names[i]; sprintf(pn->name, "%lx.%d", From 34ce57e9df7d14b52c7613bb2c190e411ca99186 Mon Sep 17 00:00:00 2001 From: Guido Piasenza Date: Tue, 22 Apr 2014 16:28:03 +0100 Subject: [PATCH 265/623] sh-pfc: r8a7790: Fix definition of IPSR5 The extra entry in the table makes SCIFA0_B, and all peripherals after it, fail. Signed-off-by: Phil Edworthy Acked-by: Laurent Pinchart Signed-off-by: Linus Walleij --- drivers/pinctrl/sh-pfc/pfc-r8a7790.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c index 48093719167a..f5cd3f961808 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c @@ -4794,8 +4794,7 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = { FN_MSIOF0_SCK_B, 0, /* IP5_23_21 [3] */ FN_WE1_N, FN_IERX, FN_CAN1_RX, FN_VI1_G4, - FN_VI1_G4_B, FN_VI2_R6, FN_SCIFA0_CTS_N_B, - FN_IERX_C, 0, + FN_VI1_G4_B, FN_VI2_R6, FN_SCIFA0_CTS_N_B, FN_IERX_C, /* IP5_20_18 [3] */ FN_WE0_N, FN_IECLK, FN_CAN_CLK, FN_VI2_VSYNC_N, FN_SCIFA0_TXD_B, FN_VI2_VSYNC_N_B, 0, 0, From 0c66c5628bbb5e96360032440f53a6cb6f8973d0 Mon Sep 17 00:00:00 2001 From: Phil Edworthy Date: Tue, 22 Apr 2014 17:38:05 +0100 Subject: [PATCH 266/623] sh-pfc: r8a7791: Fix definition of MOD_SEL3 There is a missing 0 entry from the MOD_SEL3 table. Signed-off-by: Phil Edworthy Acked-by: Laurent Pinchart Signed-off-by: Linus Walleij --- drivers/pinctrl/sh-pfc/pfc-r8a7791.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7791.c b/drivers/pinctrl/sh-pfc/pfc-r8a7791.c index 5186d70c49d4..7868bf3a0f91 100644 --- a/drivers/pinctrl/sh-pfc/pfc-r8a7791.c +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7791.c @@ -5288,7 +5288,7 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = { /* SEL_SCIF3 [2] */ FN_SEL_SCIF3_0, FN_SEL_SCIF3_1, FN_SEL_SCIF3_2, FN_SEL_SCIF3_3, /* SEL_IEB [2] */ - FN_SEL_IEB_0, FN_SEL_IEB_1, FN_SEL_IEB_2, + FN_SEL_IEB_0, FN_SEL_IEB_1, FN_SEL_IEB_2, 0, /* SEL_MMC [1] */ FN_SEL_MMC_0, FN_SEL_MMC_1, /* SEL_SCIF5 [1] */ From fb677ef70b65e22cd4401d31b700a8b4041efae1 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 21 Apr 2014 19:26:13 -0700 Subject: [PATCH 267/623] ARM: OMAP2+: Fix GPMC remap for devices using an offset At least the smc91x driver expects the device to be at 0x300 offset from bus base address. This does not work currently for GPMC when booted in device tree mode as it attempts to remap the the allocated GPMC partition to the address configured by the device tree plus the device offset. Note that this works just fine when booted with legacy mode. Let's fix the issue by just ignoring any device specific offset while remapping. And let's make sure the remap address confirms to the GPMC 16MB minimum granularity as listed in the TRM for GPMC_CONFIG7 BASEADDRESS bits. Otherwise we can get something like this: omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300 Cc: Pekon Gupta Reviewed-by: Javier Martinez Canillas Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/gpmc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index 84e57e6fbc26..9fe8c949305c 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -527,6 +527,14 @@ static int gpmc_cs_remap(int cs, u32 base) pr_err("%s: requested chip-select is disabled\n", __func__); return -ENODEV; } + + /* + * Make sure we ignore any device offsets from the GPMC partition + * allocated for the chip select and that the new base confirms + * to the GPMC 16MB minimum granularity. + */ + base &= ~(SZ_16M - 1); + gpmc_cs_get_memconf(cs, &old_base, &size); if (base == old_base) return 0; From cff2fce58b2b0f59089e7edcdc38803d65057b9f Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 22 Apr 2014 08:24:32 -0400 Subject: [PATCH 268/623] locks: rename FL_FILE_PVT and IS_FILE_PVT to use "*_OFDLCK" instead File-private locks have been re-christened as "open file description" locks. Finish the symbol name cleanup in the internal implementation. Signed-off-by: Jeff Layton --- fs/locks.c | 34 +++++++++++++++++----------------- include/linux/fs.h | 2 +- 2 files changed, 18 insertions(+), 18 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index e1023b504279..e663aeac579e 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -135,7 +135,7 @@ #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) #define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG)) -#define IS_FILE_PVT(fl) (fl->fl_flags & FL_FILE_PVT) +#define IS_OFDLCK(fl) (fl->fl_flags & FL_OFDLCK) static bool lease_breaking(struct file_lock *fl) { @@ -564,7 +564,7 @@ static void __locks_insert_block(struct file_lock *blocker, BUG_ON(!list_empty(&waiter->fl_block)); waiter->fl_next = blocker; list_add_tail(&waiter->fl_block, &blocker->fl_block); - if (IS_POSIX(blocker) && !IS_FILE_PVT(blocker)) + if (IS_POSIX(blocker) && !IS_OFDLCK(blocker)) locks_insert_global_blocked(waiter); } @@ -759,12 +759,12 @@ EXPORT_SYMBOL(posix_test_lock); * of tasks (such as posix threads) sharing the same open file table. * To handle those cases, we just bail out after a few iterations. * - * For FL_FILE_PVT locks, the owner is the filp, not the files_struct. + * For FL_OFDLCK locks, the owner is the filp, not the files_struct. * Because the owner is not even nominally tied to a thread of * execution, the deadlock detection below can't reasonably work well. Just * skip it for those. * - * In principle, we could do a more limited deadlock detection on FL_FILE_PVT + * In principle, we could do a more limited deadlock detection on FL_OFDLCK * locks that just checks for the case where two tasks are attempting to * upgrade from read to write locks on the same inode. */ @@ -791,9 +791,9 @@ static int posix_locks_deadlock(struct file_lock *caller_fl, /* * This deadlock detector can't reasonably detect deadlocks with - * FL_FILE_PVT locks, since they aren't owned by a process, per-se. + * FL_OFDLCK locks, since they aren't owned by a process, per-se. */ - if (IS_FILE_PVT(caller_fl)) + if (IS_OFDLCK(caller_fl)) return 0; while ((block_fl = what_owner_is_waiting_for(block_fl))) { @@ -1890,7 +1890,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock); static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) { - flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid; + flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid; #if BITS_PER_LONG == 32 /* * Make sure we can represent the posix lock via @@ -1912,7 +1912,7 @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl) #if BITS_PER_LONG == 32 static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl) { - flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid; + flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid; flock->l_start = fl->fl_start; flock->l_len = fl->fl_end == OFFSET_MAX ? 0 : fl->fl_end - fl->fl_start + 1; @@ -1947,7 +1947,7 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l) goto out; cmd = F_GETLK; - file_lock.fl_flags |= FL_FILE_PVT; + file_lock.fl_flags |= FL_OFDLCK; file_lock.fl_owner = (fl_owner_t)filp; } @@ -2073,7 +2073,7 @@ again: /* * If the cmd is requesting file-private locks, then set the - * FL_FILE_PVT flag and override the owner. + * FL_OFDLCK flag and override the owner. */ switch (cmd) { case F_OFD_SETLK: @@ -2082,7 +2082,7 @@ again: goto out; cmd = F_SETLK; - file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_flags |= FL_OFDLCK; file_lock->fl_owner = (fl_owner_t)filp; break; case F_OFD_SETLKW: @@ -2091,7 +2091,7 @@ again: goto out; cmd = F_SETLKW; - file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_flags |= FL_OFDLCK; file_lock->fl_owner = (fl_owner_t)filp; /* Fallthrough */ case F_SETLKW: @@ -2149,7 +2149,7 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l) goto out; cmd = F_GETLK64; - file_lock.fl_flags |= FL_FILE_PVT; + file_lock.fl_flags |= FL_OFDLCK; file_lock.fl_owner = (fl_owner_t)filp; } @@ -2208,7 +2208,7 @@ again: /* * If the cmd is requesting file-private locks, then set the - * FL_FILE_PVT flag and override the owner. + * FL_OFDLCK flag and override the owner. */ switch (cmd) { case F_OFD_SETLK: @@ -2217,7 +2217,7 @@ again: goto out; cmd = F_SETLK64; - file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_flags |= FL_OFDLCK; file_lock->fl_owner = (fl_owner_t)filp; break; case F_OFD_SETLKW: @@ -2226,7 +2226,7 @@ again: goto out; cmd = F_SETLKW64; - file_lock->fl_flags |= FL_FILE_PVT; + file_lock->fl_flags |= FL_OFDLCK; file_lock->fl_owner = (fl_owner_t)filp; /* Fallthrough */ case F_SETLKW64: @@ -2412,7 +2412,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, if (IS_POSIX(fl)) { if (fl->fl_flags & FL_ACCESS) seq_printf(f, "ACCESS"); - else if (IS_FILE_PVT(fl)) + else if (IS_OFDLCK(fl)) seq_printf(f, "OFDLCK"); else seq_printf(f, "POSIX "); diff --git a/include/linux/fs.h b/include/linux/fs.h index 7a9c5bca2b76..878031227c57 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -815,7 +815,7 @@ static inline struct file *get_file(struct file *f) #define FL_SLEEP 128 /* A blocking lock */ #define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */ #define FL_UNLOCK_PENDING 512 /* Lease is being broken */ -#define FL_FILE_PVT 1024 /* lock is private to the file */ +#define FL_OFDLCK 1024 /* lock is "owned" by struct file */ /* * Special return value from posix_lock_file() and vfs_lock_file() for From 2704f807f9498054b8153002bafa3e818079e9a5 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 28 Mar 2014 09:20:58 -0700 Subject: [PATCH 269/623] staging: comedi: usbdux: bug fix for accessing 'ao_chanlist' in private data In usbdux_ao_cmd(), the channels for the command are transfered from the cmd->chanlist and stored in the private data 'ao_chanlist'. The channel numbers are bit-shifted when stored so that they become the "command" that is transfered to the device. The channel to command conversion results in the 'ao_chanlist' having these values for the channels: channel 0 -> ao_chanlist = 0x00 channel 1 -> ao_chanlist = 0x40 channel 2 -> ao_chanlist = 0x80 channel 3 -> ao_chanlist = 0xc0 The problem is, the usbduxsub_ao_isoc_irq() function uses the 'chan' value from 'ao_chanlist' to access the 'ao_readback' array in the private data. So instead of accessing the array as 0, 1, 2, 3, it accesses it as 0x00, 0x40, 0x80, 0xc0. Fix this by storing the raw channel number in 'ao_chanlist' and doing the bit-shift when creating the command. Fixes: a998a3db530bff80 "staging: comedi: usbdux: cleanup the private data 'outBuffer'" Cc: stable # 3.12 Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Acked-by: Bernd Porr Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/usbdux.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c index 71db683098d6..b59af0303581 100644 --- a/drivers/staging/comedi/drivers/usbdux.c +++ b/drivers/staging/comedi/drivers/usbdux.c @@ -493,7 +493,7 @@ static void usbduxsub_ao_isoc_irq(struct urb *urb) /* pointer to the DA */ *datap++ = val & 0xff; *datap++ = (val >> 8) & 0xff; - *datap++ = chan; + *datap++ = chan << 6; devpriv->ao_readback[chan] = val; s->async->events |= COMEDI_CB_BLOCK; @@ -1040,11 +1040,8 @@ static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s) /* set current channel of the running acquisition to zero */ s->async->cur_chan = 0; - for (i = 0; i < cmd->chanlist_len; ++i) { - unsigned int chan = CR_CHAN(cmd->chanlist[i]); - - devpriv->ao_chanlist[i] = chan << 6; - } + for (i = 0; i < cmd->chanlist_len; ++i) + devpriv->ao_chanlist[i] = CR_CHAN(cmd->chanlist[i]); /* we count in steps of 1ms (125us) */ /* 125us mode not used yet */ From cb171f7abb9a1a250fb41d088b81799f75bd1357 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Wed, 23 Apr 2014 10:21:06 -0600 Subject: [PATCH 270/623] PNP: Work around BIOS defects in Intel MCH area reporting Work around BIOSes that don't report the entire Intel MCH area. MCHBAR is not an architected PCI BAR, so MCH space is usually reported as a PNP0C02 resource. The MCH space was once 16KB, but is 32KB in newer parts. Some BIOSes still report a PNP0C02 resource that is only 16KB, which means the rest of the MCH space is consumed but unreported. This can cause resource map sanity check warnings or (theoretically) a device conflict if we assigned the unreported space to another device. The Intel perf event uncore driver tripped over this when it claimed the MCH region: resource map sanity check conflict: 0xfed10000 0xfed15fff 0xfed10000 0xfed13fff pnp 00:01 Info: mapping multiple BARs. Your kernel is fine. To prevent this, if we find a PNP0C02 resource that covers part of the MCH space, extend it to cover the entire space. References: http://lkml.kernel.org/r/20140224162400.GE16457@pd.tnic Reported-and-tested-by: Borislav Petkov Signed-off-by: Bjorn Helgaas Acked-by: Borislav Petkov Acked-by: Stephane Eranian Signed-off-by: Rafael J. Wysocki --- drivers/pnp/quirks.c | 79 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index 258fef272ea7..3736bc408adb 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include @@ -334,6 +335,81 @@ static void quirk_amd_mmconfig_area(struct pnp_dev *dev) } #endif +#ifdef CONFIG_X86 +/* Device IDs of parts that have 32KB MCH space */ +static const unsigned int mch_quirk_devices[] = { + 0x0154, /* Ivy Bridge */ + 0x0c00, /* Haswell */ +}; + +static struct pci_dev *get_intel_host(void) +{ + int i; + struct pci_dev *host; + + for (i = 0; i < ARRAY_SIZE(mch_quirk_devices); i++) { + host = pci_get_device(PCI_VENDOR_ID_INTEL, mch_quirk_devices[i], + NULL); + if (host) + return host; + } + return NULL; +} + +static void quirk_intel_mch(struct pnp_dev *dev) +{ + struct pci_dev *host; + u32 addr_lo, addr_hi; + struct pci_bus_region region; + struct resource mch; + struct pnp_resource *pnp_res; + struct resource *res; + + host = get_intel_host(); + if (!host) + return; + + /* + * MCHBAR is not an architected PCI BAR, so MCH space is usually + * reported as a PNP0C02 resource. The MCH space was originally + * 16KB, but is 32KB in newer parts. Some BIOSes still report a + * PNP0C02 resource that is only 16KB, which means the rest of the + * MCH space is consumed but unreported. + */ + + /* + * Read MCHBAR for Host Member Mapped Register Range Base + * https://www-ssl.intel.com/content/www/us/en/processors/core/4th-gen-core-family-desktop-vol-2-datasheet + * Sec 3.1.12. + */ + pci_read_config_dword(host, 0x48, &addr_lo); + region.start = addr_lo & ~0x7fff; + pci_read_config_dword(host, 0x4c, &addr_hi); + region.start |= (u64) addr_hi << 32; + region.end = region.start + 32*1024 - 1; + + memset(&mch, 0, sizeof(mch)); + mch.flags = IORESOURCE_MEM; + pcibios_bus_to_resource(host->bus, &mch, ®ion); + + list_for_each_entry(pnp_res, &dev->resources, list) { + res = &pnp_res->res; + if (res->end < mch.start || res->start > mch.end) + continue; /* no overlap */ + if (res->start == mch.start && res->end == mch.end) + continue; /* exact match */ + + dev_info(&dev->dev, FW_BUG "PNP resource %pR covers only part of %s Intel MCH; extending to %pR\n", + res, pci_name(host), &mch); + res->start = mch.start; + res->end = mch.end; + break; + } + + pci_dev_put(host); +} +#endif + /* * PnP Quirks * Cards or devices that need some tweaking due to incomplete resource info @@ -363,6 +439,9 @@ static struct pnp_fixup pnp_fixups[] = { {"PNP0c02", quirk_system_pci_resources}, #ifdef CONFIG_AMD_NB {"PNP0c01", quirk_amd_mmconfig_area}, +#endif +#ifdef CONFIG_X86 + {"PNP0c02", quirk_intel_mch}, #endif {""} }; From 9f7ff8931e3c5ddc8535476971ec9501e9555c05 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Wed, 23 Apr 2014 19:04:19 +0200 Subject: [PATCH 271/623] perf/x86: Fix RAPL rdmsrl_safe() usage This patch fixes a bug introduced by: 24223657806a ("perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU") The rdmsrl_safe() function returns 0 on success. The current code was failing to detect the RAPL PMU on real hardware (missing /sys/devices/power) because the return value of rdmsrl_safe() was misinterpreted. Signed-off-by: Stephane Eranian Acked-by: Borislav Petkov Acked-by: Venkatesh Srinivas Cc: peterz@infradead.org Cc: zheng.z.yan@intel.com Link: http://lkml.kernel.org/r/20140423170418.GA12767@quad Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel_rapl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c index 7c87424d4140..619f7699487a 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c +++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c @@ -543,7 +543,8 @@ static int rapl_cpu_prepare(int cpu) if (phys_id < 0) return -1; - if (!rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits)) + /* protect rdmsrl() to handle virtualization */ + if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits)) return -1; pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu)); From cbd75e97a525e3819c02dc18bc2d67aa544c9e45 Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Tue, 15 Apr 2014 18:25:48 +0200 Subject: [PATCH 272/623] drm/vmwgfx: Make sure user-space can't DMA across buffer object boundaries v2 We already check that the buffer object we're accessing is registered with the file. Now also make sure that we can't DMA across buffer object boundaries. v2: Code commenting update. Cc: stable@vger.kernel.org Signed-off-by: Thomas Hellstrom Reviewed-by: Jakob Bornecrantz --- drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 931490b9cfed..87df0b3674fd 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -1214,14 +1214,36 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv, SVGA3dCmdSurfaceDMA dma; } *cmd; int ret; + SVGA3dCmdSurfaceDMASuffix *suffix; + uint32_t bo_size; cmd = container_of(header, struct vmw_dma_cmd, header); + suffix = (SVGA3dCmdSurfaceDMASuffix *)((unsigned long) &cmd->dma + + header->size - sizeof(*suffix)); + + /* Make sure device and verifier stays in sync. */ + if (unlikely(suffix->suffixSize != sizeof(*suffix))) { + DRM_ERROR("Invalid DMA suffix size.\n"); + return -EINVAL; + } + ret = vmw_translate_guest_ptr(dev_priv, sw_context, &cmd->dma.guest.ptr, &vmw_bo); if (unlikely(ret != 0)) return ret; + /* Make sure DMA doesn't cross BO boundaries. */ + bo_size = vmw_bo->base.num_pages * PAGE_SIZE; + if (unlikely(cmd->dma.guest.ptr.offset > bo_size)) { + DRM_ERROR("Invalid DMA offset.\n"); + return -EINVAL; + } + + bo_size -= cmd->dma.guest.ptr.offset; + if (unlikely(suffix->maximumOffset > bo_size)) + suffix->maximumOffset = bo_size; + ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface, user_surface_converter, &cmd->dma.host.sid, NULL); From edd586fe705e819bc711b5ed7194a0b6f9f1a7e1 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 23 Apr 2014 08:54:31 +0100 Subject: [PATCH 273/623] drm/i915: Discard BIOS framebuffers too small to accommodate chosen mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If the inherited BIOS framebuffer is smaller than the mode selected for fbdev, then if we continue to use it then we cause display corruption as we do not setup the panel fitter to upscale. Regression from commit d978ef14456a38034f6c0e94a794129501f89200 Author: Jesse Barnes Date: Fri Mar 7 08:57:51 2014 -0800 drm/i915: Wrap the preallocated BIOS framebuffer and preserve for KMS fbcon v12 v2: Add a debug message to track the discard of the BIOS fb. v3: Ville pointed out the difference between ref/unref Reported-by: Knut Petersen Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77767 Signed-off-by: Chris Wilson Cc: Jesse Barnes Reviewed-by: Daniel Vetter Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_fbdev.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c index b4d44e62f0c7..fce4a0d93c0b 100644 --- a/drivers/gpu/drm/i915/intel_fbdev.c +++ b/drivers/gpu/drm/i915/intel_fbdev.c @@ -132,6 +132,16 @@ static int intelfb_create(struct drm_fb_helper *helper, mutex_lock(&dev->struct_mutex); + if (intel_fb && + (sizes->fb_width > intel_fb->base.width || + sizes->fb_height > intel_fb->base.height)) { + DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," + " releasing it\n", + intel_fb->base.width, intel_fb->base.height, + sizes->fb_width, sizes->fb_height); + drm_framebuffer_unreference(&intel_fb->base); + intel_fb = ifbdev->fb = NULL; + } if (!intel_fb || WARN_ON(!intel_fb->obj)) { DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); ret = intelfb_alloc(helper, sizes); From 0f9dc59db6abc475dc23afc077fabbc606b8830f Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Mon, 24 Mar 2014 18:06:00 -0700 Subject: [PATCH 274/623] drm/i915: Allow full PPGTT with param override When PPGTT was disabled by default, the patch also prevented the user from overriding this behavior via module parameter. Being able to test this on arbitrary kernels is extremely beneficial to track down the remaining bugs. The patch that prevented this was: commit 93a25a9e2d67765c3092bfaac9b855d95e39df97 Author: Daniel Vetter Date: Thu Mar 6 09:40:43 2014 +0100 drm/i915: Disable full ppgtt by default By default PPGTT is set to -1. 0 means off, 1 means aliasing only, 2 means full, all other values are reserved. Signed-off-by: Ben Widawsky Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_gem_gtt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index ab5e93c30aa2..62a5c3627b90 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -50,7 +50,7 @@ bool intel_enable_ppgtt(struct drm_device *dev, bool full) /* Full ppgtt disabled by default for now due to issues. */ if (full) - return false; /* HAS_PPGTT(dev) */ + return HAS_PPGTT(dev) && (i915.enable_ppgtt == 2); else return HAS_ALIASING_PPGTT(dev); } From 6b4ed8b00e93bd31f24a25f59ed8d1b808d0cc00 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 7 Nov 2013 08:08:44 +0000 Subject: [PATCH 275/623] clk: vexpress: NULL dereference on error path If the allocation fails then we dereference the NULL in the error path. Just return directly. Fixes: ed27ff1db869 ('clk: Versatile Express clock generators ("osc") driver') Signed-off-by: Dan Carpenter Signed-off-by: Pawel Moll --- drivers/clk/versatile/clk-vexpress-osc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/versatile/clk-vexpress-osc.c b/drivers/clk/versatile/clk-vexpress-osc.c index 2dc8b41a339d..a535c7bf8574 100644 --- a/drivers/clk/versatile/clk-vexpress-osc.c +++ b/drivers/clk/versatile/clk-vexpress-osc.c @@ -102,7 +102,7 @@ void __init vexpress_osc_of_setup(struct device_node *node) osc = kzalloc(sizeof(*osc), GFP_KERNEL); if (!osc) - goto error; + return; osc->func = vexpress_config_func_get_by_node(node); if (!osc->func) { From bb6dd5757c12e9f3f25da971f1ea45c777ae79ab Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Mon, 14 Apr 2014 08:42:01 +0100 Subject: [PATCH 276/623] arm/mach-vexpress: array accessed out of bounds dcscb_allcpus_mask is an array of size 2. The index variable cluster has to be checked against this limit before accessing the array. Signed-off-by: Heinrich Schuchardt Acked-by: Nicolas Pitre Signed-off-by: Pawel Moll --- arch/arm/mach-vexpress/dcscb.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-vexpress/dcscb.c b/arch/arm/mach-vexpress/dcscb.c index 788495d35cf9..30b993399ed7 100644 --- a/arch/arm/mach-vexpress/dcscb.c +++ b/arch/arm/mach-vexpress/dcscb.c @@ -51,12 +51,14 @@ static int dcscb_allcpus_mask[2]; static int dcscb_power_up(unsigned int cpu, unsigned int cluster) { unsigned int rst_hold, cpumask = (1 << cpu); - unsigned int all_mask = dcscb_allcpus_mask[cluster]; + unsigned int all_mask; pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); if (cpu >= 4 || cluster >= 2) return -EINVAL; + all_mask = dcscb_allcpus_mask[cluster]; + /* * Since this is called with IRQs enabled, and no arch_spin_lock_irq * variant exists, we need to disable IRQs manually here. @@ -101,11 +103,12 @@ static void dcscb_power_down(void) cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); cpumask = (1 << cpu); - all_mask = dcscb_allcpus_mask[cluster]; pr_debug("%s: cpu %u cluster %u\n", __func__, cpu, cluster); BUG_ON(cpu >= 4 || cluster >= 2); + all_mask = dcscb_allcpus_mask[cluster]; + __mcpm_cpu_going_down(cpu, cluster); arch_spin_lock(&dcscb_lock); From 52feaca5d685c07a4bc9812d16d84f5f7991bfe7 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Wed, 23 Apr 2014 18:27:04 +0100 Subject: [PATCH 277/623] hwmon: (vexpress) Use legal hwmon device names The driver used to directly us a DT 'compatible' property for the 'name' attribute of the hwmon devices. Unfortunately it contains '-' which is illegal in this context. It messes up libsensors and thus every application using it. Fixed by providing equivalent (and simpler) name strings. Reported-by: Guenter Roeck Signed-off-by: Pawel Moll Signed-off-by: Guenter Roeck --- drivers/hwmon/vexpress.c | 61 ++++++++++++++++++++++++++++++++++------ 1 file changed, 52 insertions(+), 9 deletions(-) diff --git a/drivers/hwmon/vexpress.c b/drivers/hwmon/vexpress.c index d867e6bb2be1..7f9690560f40 100644 --- a/drivers/hwmon/vexpress.c +++ b/drivers/hwmon/vexpress.c @@ -27,15 +27,15 @@ struct vexpress_hwmon_data { struct device *hwmon_dev; struct vexpress_config_func *func; + const char *name; }; static ssize_t vexpress_hwmon_name_show(struct device *dev, struct device_attribute *dev_attr, char *buffer) { - const char *compatible = of_get_property(dev->of_node, "compatible", - NULL); + struct vexpress_hwmon_data *data = dev_get_drvdata(dev); - return sprintf(buffer, "%s\n", compatible); + return sprintf(buffer, "%s\n", data->name); } static ssize_t vexpress_hwmon_label_show(struct device *dev, @@ -94,6 +94,11 @@ struct attribute *vexpress_hwmon_attrs_##_name[] = { \ NULL \ } +struct vexpress_hwmon_type { + const char *name; + const struct attribute_group **attr_groups; +}; + #if !defined(CONFIG_REGULATOR_VEXPRESS) static DEVICE_ATTR(in1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, vexpress_hwmon_u32_show, @@ -102,6 +107,13 @@ static VEXPRESS_HWMON_ATTRS(volt, in1_label, in1_input); static struct attribute_group vexpress_hwmon_group_volt = { .attrs = vexpress_hwmon_attrs_volt, }; +static struct vexpress_hwmon_type vexpress_hwmon_volt = { + .name = "vexpress_volt", + .attr_groups = (const struct attribute_group *[]) { + &vexpress_hwmon_group_volt, + NULL, + }, +}; #endif static DEVICE_ATTR(curr1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); @@ -111,6 +123,13 @@ static VEXPRESS_HWMON_ATTRS(amp, curr1_label, curr1_input); static struct attribute_group vexpress_hwmon_group_amp = { .attrs = vexpress_hwmon_attrs_amp, }; +static struct vexpress_hwmon_type vexpress_hwmon_amp = { + .name = "vexpress_amp", + .attr_groups = (const struct attribute_group *[]) { + &vexpress_hwmon_group_amp, + NULL + }, +}; static DEVICE_ATTR(temp1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, vexpress_hwmon_u32_show, @@ -119,6 +138,13 @@ static VEXPRESS_HWMON_ATTRS(temp, temp1_label, temp1_input); static struct attribute_group vexpress_hwmon_group_temp = { .attrs = vexpress_hwmon_attrs_temp, }; +static struct vexpress_hwmon_type vexpress_hwmon_temp = { + .name = "vexpress_temp", + .attr_groups = (const struct attribute_group *[]) { + &vexpress_hwmon_group_temp, + NULL + }, +}; static DEVICE_ATTR(power1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, vexpress_hwmon_u32_show, @@ -127,6 +153,13 @@ static VEXPRESS_HWMON_ATTRS(power, power1_label, power1_input); static struct attribute_group vexpress_hwmon_group_power = { .attrs = vexpress_hwmon_attrs_power, }; +static struct vexpress_hwmon_type vexpress_hwmon_power = { + .name = "vexpress_power", + .attr_groups = (const struct attribute_group *[]) { + &vexpress_hwmon_group_power, + NULL + }, +}; static DEVICE_ATTR(energy1_label, S_IRUGO, vexpress_hwmon_label_show, NULL); static SENSOR_DEVICE_ATTR(energy1_input, S_IRUGO, vexpress_hwmon_u64_show, @@ -135,26 +168,33 @@ static VEXPRESS_HWMON_ATTRS(energy, energy1_label, energy1_input); static struct attribute_group vexpress_hwmon_group_energy = { .attrs = vexpress_hwmon_attrs_energy, }; +static struct vexpress_hwmon_type vexpress_hwmon_energy = { + .name = "vexpress_energy", + .attr_groups = (const struct attribute_group *[]) { + &vexpress_hwmon_group_energy, + NULL + }, +}; static struct of_device_id vexpress_hwmon_of_match[] = { #if !defined(CONFIG_REGULATOR_VEXPRESS) { .compatible = "arm,vexpress-volt", - .data = &vexpress_hwmon_group_volt, + .data = &vexpress_hwmon_volt, }, #endif { .compatible = "arm,vexpress-amp", - .data = &vexpress_hwmon_group_amp, + .data = &vexpress_hwmon_amp, }, { .compatible = "arm,vexpress-temp", - .data = &vexpress_hwmon_group_temp, + .data = &vexpress_hwmon_temp, }, { .compatible = "arm,vexpress-power", - .data = &vexpress_hwmon_group_power, + .data = &vexpress_hwmon_power, }, { .compatible = "arm,vexpress-energy", - .data = &vexpress_hwmon_group_energy, + .data = &vexpress_hwmon_energy, }, {} }; @@ -165,6 +205,7 @@ static int vexpress_hwmon_probe(struct platform_device *pdev) int err; const struct of_device_id *match; struct vexpress_hwmon_data *data; + const struct vexpress_hwmon_type *type; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) @@ -174,12 +215,14 @@ static int vexpress_hwmon_probe(struct platform_device *pdev) match = of_match_device(vexpress_hwmon_of_match, &pdev->dev); if (!match) return -ENODEV; + type = match->data; + data->name = type->name; data->func = vexpress_config_func_get_by_dev(&pdev->dev); if (!data->func) return -ENODEV; - err = sysfs_create_group(&pdev->dev.kobj, match->data); + err = sysfs_create_groups(&pdev->dev.kobj, type->attr_groups); if (err) goto error; From b2e5411ee26bff1deefd0b2c7beec9c133632e65 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Wed, 23 Apr 2014 18:27:05 +0100 Subject: [PATCH 278/623] hwmon: (vexpress) Avoid creating non-existing attributes The 'label' attribute was always created but returned -ENOENT if there is no label and such behaviour is undefined from libsensors' point of view. Fixed by providing is_visible method in the attributes group, so the attribute is not created at all when unnecessary. Reported-by: Guenter Roeck Signed-off-by: Pawel Moll Signed-off-by: Guenter Roeck --- drivers/hwmon/vexpress.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/vexpress.c b/drivers/hwmon/vexpress.c index 7f9690560f40..8242b75d96c8 100644 --- a/drivers/hwmon/vexpress.c +++ b/drivers/hwmon/vexpress.c @@ -43,9 +43,6 @@ static ssize_t vexpress_hwmon_label_show(struct device *dev, { const char *label = of_get_property(dev->of_node, "label", NULL); - if (!label) - return -ENOENT; - return snprintf(buffer, PAGE_SIZE, "%s\n", label); } @@ -84,6 +81,20 @@ static ssize_t vexpress_hwmon_u64_show(struct device *dev, to_sensor_dev_attr(dev_attr)->index)); } +static umode_t vexpress_hwmon_attr_is_visible(struct kobject *kobj, + struct attribute *attr, int index) +{ + struct device *dev = kobj_to_dev(kobj); + struct device_attribute *dev_attr = container_of(attr, + struct device_attribute, attr); + + if (dev_attr->show == vexpress_hwmon_label_show && + !of_get_property(dev->of_node, "label", NULL)) + return 0; + + return attr->mode; +} + static DEVICE_ATTR(name, S_IRUGO, vexpress_hwmon_name_show, NULL); #define VEXPRESS_HWMON_ATTRS(_name, _label_attr, _input_attr) \ @@ -105,6 +116,7 @@ static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); static VEXPRESS_HWMON_ATTRS(volt, in1_label, in1_input); static struct attribute_group vexpress_hwmon_group_volt = { + .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_volt, }; static struct vexpress_hwmon_type vexpress_hwmon_volt = { @@ -121,6 +133,7 @@ static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); static VEXPRESS_HWMON_ATTRS(amp, curr1_label, curr1_input); static struct attribute_group vexpress_hwmon_group_amp = { + .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_amp, }; static struct vexpress_hwmon_type vexpress_hwmon_amp = { @@ -136,6 +149,7 @@ static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1000); static VEXPRESS_HWMON_ATTRS(temp, temp1_label, temp1_input); static struct attribute_group vexpress_hwmon_group_temp = { + .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_temp, }; static struct vexpress_hwmon_type vexpress_hwmon_temp = { @@ -151,6 +165,7 @@ static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, vexpress_hwmon_u32_show, NULL, 1); static VEXPRESS_HWMON_ATTRS(power, power1_label, power1_input); static struct attribute_group vexpress_hwmon_group_power = { + .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_power, }; static struct vexpress_hwmon_type vexpress_hwmon_power = { @@ -166,6 +181,7 @@ static SENSOR_DEVICE_ATTR(energy1_input, S_IRUGO, vexpress_hwmon_u64_show, NULL, 1); static VEXPRESS_HWMON_ATTRS(energy, energy1_label, energy1_input); static struct attribute_group vexpress_hwmon_group_energy = { + .is_visible = vexpress_hwmon_attr_is_visible, .attrs = vexpress_hwmon_attrs_energy, }; static struct vexpress_hwmon_type vexpress_hwmon_energy = { From 2b4c36612efac173397756398000921a7771fdda Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 23 Apr 2014 15:15:32 +0200 Subject: [PATCH 279/623] drm/tegra: restrict plane loops to legacy planes In Matt Ropers primary plane series a set of prep patches like commit af2b653bfb4ef40931b4d101ca842ce0c5da57ef Author: Matt Roper Date: Tue Apr 1 15:22:32 2014 -0700 drm/i915: Restrict plane loops to only operate on overlay planes (v2) ensured that all exisiting users of the mode_config->plane_list wouldn't change behaviour. Unfortunately tegra seems to have fallen through the cracks. Fix it. This regression was introduced in commit e13161af80c185ecd8dc4641d0f5df58f9e3e0af Author: Matt Roper Date: Tue Apr 1 15:22:38 2014 -0700 drm: Add drm_crtc_init_with_planes() (v2) The result was that we've unref'ed the fb for the primary plane twice, leading to a use-after free bug. This is because the drm core will already set crtc->primary->fb to NULL and do the unref for us, and the crtc disable hook is called by the drm crtc helpers for exactly this case. Aside: Now that the fbdev helpers clean up planes there's no longer a need to do this in drivers. So this could probably be nuked entirely in linux-next. Signed-off-by: Daniel Vetter Reviewed-by: Matt Roper Tested-by: Stephen Warren Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 36c717af6cf9..edb871d7d395 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -312,7 +312,7 @@ static void tegra_crtc_disable(struct drm_crtc *crtc) struct drm_device *drm = crtc->dev; struct drm_plane *plane; - list_for_each_entry(plane, &drm->mode_config.plane_list, head) { + drm_for_each_legacy_plane(plane, &drm->mode_config.plane_list) { if (plane->crtc == crtc) { tegra_plane_disable(plane); plane->crtc = NULL; From f75d72309192e52ef9a3efb390b1c4f408c142df Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 21 Apr 2014 10:38:08 -0700 Subject: [PATCH 280/623] hwmon: (ltc2945) Don't crash the kernel unnecessarily An implementation error should not crash the kernel if it is avoidable. Replace BUG() with WARN_ONCE(). Signed-off-by: Guenter Roeck --- drivers/hwmon/ltc2945.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/ltc2945.c b/drivers/hwmon/ltc2945.c index c104cc32989d..c9cddf5f056b 100644 --- a/drivers/hwmon/ltc2945.c +++ b/drivers/hwmon/ltc2945.c @@ -1,4 +1,4 @@ -/* + /* * Driver for Linear Technology LTC2945 I2C Power Monitor * * Copyright (c) 2014 Guenter Roeck @@ -314,8 +314,8 @@ static ssize_t ltc2945_reset_history(struct device *dev, reg = LTC2945_MAX_ADIN_H; break; default: - BUG(); - break; + WARN_ONCE(1, "Bad register: 0x%x\n", reg); + return -EINVAL; } /* Reset maximum */ ret = regmap_bulk_write(regmap, reg, buf_max, num_regs); From c02b50e90be9f41d6802049a1a08246e9eb1a22c Mon Sep 17 00:00:00 2001 From: Andrea Adami Date: Tue, 8 Apr 2014 14:53:44 +0200 Subject: [PATCH 281/623] ARM: pxa: hx4700.h: include "irqs.h" for PXA_NR_BUILTIN_GPIO hx4700 needs the same fix as in 9705e74671f0e4f994d86b00cecf441917c64a66 "ARM: pxa: fix various compilation problems" Fix build errors. Initial one is: /linux/arch/arm/mach-pxa/include/mach/hx4700.h:18:32: error: 'PXA_NR_BUILTIN_GPIO' undeclared here (not in a function) | #define HX4700_ASIC3_GPIO_BASE PXA_NR_BUILTIN_GPIO Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Andrea Adami Signed-off-by: Linus Walleij Signed-off-by: Arnd Bergmann --- arch/arm/mach-pxa/include/mach/hx4700.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-pxa/include/mach/hx4700.h b/arch/arm/mach-pxa/include/mach/hx4700.h index 8bc02913517c..0e1bb46264f9 100644 --- a/arch/arm/mach-pxa/include/mach/hx4700.h +++ b/arch/arm/mach-pxa/include/mach/hx4700.h @@ -14,6 +14,7 @@ #include #include +#include "irqs.h" /* PXA_NR_BUILTIN_GPIO */ #define HX4700_ASIC3_GPIO_BASE PXA_NR_BUILTIN_GPIO #define HX4700_EGPIO_BASE (HX4700_ASIC3_GPIO_BASE + ASIC3_NUM_GPIOS) From 1be5f69216a20b3ed7ef8b0392ca97385bdca959 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 9 Apr 2014 09:01:12 -0500 Subject: [PATCH 282/623] ARM: spear: add __init to spear_clocksource_init() I get a build warning because spear_clocksource_init() calls clocksource_mmio_init(), but it doesn't have an __init annotation. Fix that. Signed-off-by: Alex Elder Acked-by: Viresh Kumar Signed-off-by: Arnd Bergmann --- arch/arm/mach-spear/time.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-spear/time.c b/arch/arm/mach-spear/time.c index 218ba5b67d92..c4d0931fc6ee 100644 --- a/arch/arm/mach-spear/time.c +++ b/arch/arm/mach-spear/time.c @@ -71,7 +71,7 @@ static void clockevent_set_mode(enum clock_event_mode mode, static int clockevent_next_event(unsigned long evt, struct clock_event_device *clk_event_dev); -static void spear_clocksource_init(void) +static void __init spear_clocksource_init(void) { u32 tick_rate; u16 val; From 6d0add405a6665e743fddf9c117fd6778f7a428e Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 16 Apr 2014 08:42:13 -0500 Subject: [PATCH 283/623] ARM: fix missing CLKSRC_OF on multi-platform In commit ddb902cc34593e (ARM: centralize common multi-platform kconfig options), CLKSRC_OF was removed from some platforms, but not added to ARCH_MULTIPLATFORM. Fix this. Reported-by: Lauri Hintsala Signed-off-by: Rob Herring Signed-off-by: Arnd Bergmann --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ab438cb5af55..a48712ed0444 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -311,6 +311,7 @@ config ARCH_MULTIPLATFORM select ARM_HAS_SG_CHAIN select ARM_PATCH_PHYS_VIRT select AUTO_ZRELADDR + select CLKSRC_OF select COMMON_CLK select GENERIC_CLOCKEVENTS select MULTI_IRQ_HANDLER From af81c08c281bbc1dfc7b1fbf85f240fb7072724e Mon Sep 17 00:00:00 2001 From: Domenico Andreoli Date: Mon, 14 Apr 2014 11:55:01 +0200 Subject: [PATCH 284/623] ARM: Tidy up DTB Makefile entries Few things were out of order: - removed ARCH_BCM2835 duplicate - shuffled ARCH_BCM_5301X, ARCH_U8500 and ARCH_U300 around so to keep the list sorted Cc: Arnd Bergmann Cc: Olof Johansson Signed-by: Domenico Andreoli Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/Makefile | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 35c146f31e46..c2d97b998f69 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -51,10 +51,9 @@ dtb-$(CONFIG_ARCH_AT91) += sama5d36ek.dtb dtb-$(CONFIG_ARCH_ATLAS6) += atlas6-evb.dtb dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb +dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb dtb-$(CONFIG_ARCH_BCM_MOBILE) += bcm28155-ap.dtb \ bcm21664-garnet.dtb -dtb-$(CONFIG_ARCH_BCM2835) += bcm2835-rpi-b.dtb -dtb-$(CONFIG_ARCH_BCM_5301X) += bcm4708-netgear-r6250.dtb dtb-$(CONFIG_ARCH_BERLIN) += \ berlin2-sony-nsz-gs7.dtb \ berlin2cd-google-chromecast.dtb @@ -294,13 +293,6 @@ dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb dtb-$(CONFIG_ARCH_QCOM) += qcom-msm8660-surf.dtb \ qcom-msm8960-cdp.dtb \ qcom-apq8074-dragonboard.dtb -dtb-$(CONFIG_ARCH_U8500) += ste-snowball.dtb \ - ste-hrefprev60-stuib.dtb \ - ste-hrefprev60-tvk.dtb \ - ste-hrefv60plus-stuib.dtb \ - ste-hrefv60plus-tvk.dtb \ - ste-ccu8540.dtb \ - ste-ccu9540.dtb dtb-$(CONFIG_ARCH_S3C24XX) += s3c2416-smdk2416.dtb dtb-$(CONFIG_ARCH_S3C64XX) += s3c6410-mini6410.dtb \ s3c6410-smdk6410.dtb @@ -369,9 +361,16 @@ dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \ tegra30-cardhu-a04.dtb \ tegra114-dalmore.dtb \ tegra124-venice2.dtb +dtb-$(CONFIG_ARCH_U300) += ste-u300.dtb +dtb-$(CONFIG_ARCH_U8500) += ste-snowball.dtb \ + ste-hrefprev60-stuib.dtb \ + ste-hrefprev60-tvk.dtb \ + ste-hrefv60plus-stuib.dtb \ + ste-hrefv60plus-tvk.dtb \ + ste-ccu8540.dtb \ + ste-ccu9540.dtb dtb-$(CONFIG_ARCH_VERSATILE) += versatile-ab.dtb \ versatile-pb.dtb -dtb-$(CONFIG_ARCH_U300) += ste-u300.dtb dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2p-ca5s.dtb \ vexpress-v2p-ca9.dtb \ vexpress-v2p-ca15-tc1.dtb \ From cab4d50389c6b23fc3d7184d794856186bdc6651 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 7 Apr 2014 10:52:23 -0600 Subject: [PATCH 285/623] ARM: tegra: remove TEGRA_EMC_SCALING_ENABLE Commit a7cbe92cef27 ("ARM: tegra: remove tegra EMC scaling driver") removed the only user of TEGRA_EMC_SCALING_ENABLE. Remove its Kconfig entry too. Signed-off-by: Paul Bolle Signed-off-by: Stephen Warren Signed-off-by: Arnd Bergmann --- arch/arm/mach-tegra/Kconfig | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index 92d660f9610f..55b305d51669 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -70,7 +70,4 @@ config TEGRA_AHB which controls AHB bus master arbitration and some performance parameters(priority, prefech size). -config TEGRA_EMC_SCALING_ENABLE - bool "Enable scaling the memory frequency" - endmenu From 862f0eea38409ff0d7f226c1245b787e3f0e2607 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 1 Apr 2014 14:13:15 -0600 Subject: [PATCH 286/623] ARM: tegra: remove UART5/UARTE from tegra124.dtsi Tegra124 only has 4 UARTs. Parts of the documentation hint at a fifth UART, but this appears to be left-over from earlier SoC documentation. Remove the non-existent DT node for UART5. Cc: Signed-off-by: Stephen Warren Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/tegra124.dtsi | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi index cf45a1a39483..6d540a025148 100644 --- a/arch/arm/boot/dts/tegra124.dtsi +++ b/arch/arm/boot/dts/tegra124.dtsi @@ -233,19 +233,6 @@ status = "disabled"; }; - serial@0,70006400 { - compatible = "nvidia,tegra124-uart", "nvidia,tegra20-uart"; - reg = <0x0 0x70006400 0x0 0x40>; - reg-shift = <2>; - interrupts = ; - clocks = <&tegra_car TEGRA124_CLK_UARTE>; - resets = <&tegra_car 66>; - reset-names = "serial"; - dmas = <&apbdma 20>, <&apbdma 20>; - dma-names = "rx", "tx"; - status = "disabled"; - }; - pwm@0,7000a000 { compatible = "nvidia,tegra124-pwm", "nvidia,tegra20-pwm"; reg = <0x0 0x7000a000 0x0 0x100>; From 9ba71705706aa83bcd7f9b74ae2d167da934c951 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 1 Apr 2014 14:13:16 -0600 Subject: [PATCH 287/623] clk: tegra: remove non-existent clocks The Tegra124 clock driver currently provides 3 clocks that don't actually exist; 2 for NAND and one for UART5/UARTE. Delete these. Cc: Signed-off-by: Stephen Warren Signed-off-by: Arnd Bergmann --- drivers/clk/tegra/clk-tegra124.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c index 166e02f16c8a..cc37c342c4cb 100644 --- a/drivers/clk/tegra/clk-tegra124.c +++ b/drivers/clk/tegra/clk-tegra124.c @@ -764,7 +764,6 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = { [tegra_clk_sdmmc2_8] = { .dt_id = TEGRA124_CLK_SDMMC2, .present = true }, [tegra_clk_i2s1] = { .dt_id = TEGRA124_CLK_I2S1, .present = true }, [tegra_clk_i2c1] = { .dt_id = TEGRA124_CLK_I2C1, .present = true }, - [tegra_clk_ndflash] = { .dt_id = TEGRA124_CLK_NDFLASH, .present = true }, [tegra_clk_sdmmc1_8] = { .dt_id = TEGRA124_CLK_SDMMC1, .present = true }, [tegra_clk_sdmmc4_8] = { .dt_id = TEGRA124_CLK_SDMMC4, .present = true }, [tegra_clk_pwm] = { .dt_id = TEGRA124_CLK_PWM, .present = true }, @@ -809,7 +808,6 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = { [tegra_clk_trace] = { .dt_id = TEGRA124_CLK_TRACE, .present = true }, [tegra_clk_soc_therm] = { .dt_id = TEGRA124_CLK_SOC_THERM, .present = true }, [tegra_clk_dtv] = { .dt_id = TEGRA124_CLK_DTV, .present = true }, - [tegra_clk_ndspeed] = { .dt_id = TEGRA124_CLK_NDSPEED, .present = true }, [tegra_clk_i2cslow] = { .dt_id = TEGRA124_CLK_I2CSLOW, .present = true }, [tegra_clk_dsib] = { .dt_id = TEGRA124_CLK_DSIB, .present = true }, [tegra_clk_tsec] = { .dt_id = TEGRA124_CLK_TSEC, .present = true }, @@ -952,7 +950,6 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = { [tegra_clk_clk_out_3_mux] = { .dt_id = TEGRA124_CLK_CLK_OUT_3_MUX, .present = true }, [tegra_clk_dsia_mux] = { .dt_id = TEGRA124_CLK_DSIA_MUX, .present = true }, [tegra_clk_dsib_mux] = { .dt_id = TEGRA124_CLK_DSIB_MUX, .present = true }, - [tegra_clk_uarte] = { .dt_id = TEGRA124_CLK_UARTE, .present = true }, }; static struct tegra_devclk devclks[] __initdata = { From 9ef1af9ea28c23d0eaed97f7f5142788b6cf570a Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Tue, 1 Apr 2014 14:13:17 -0600 Subject: [PATCH 288/623] dt: tegra: remove non-existent clock IDs The Tegra124 clock DT binding currently provides 3 clocks that don't actually exist; 2 for NAND and one for UART5/UARTE. Delete these. While this is technically an incompatible DT ABI change, nothing could have used these clock IDs for anything practical, since the HW doesn't exist. Cc: Signed-off-by: Stephen Warren Signed-off-by: Arnd Bergmann --- include/dt-bindings/clock/tegra124-car.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/dt-bindings/clock/tegra124-car.h b/include/dt-bindings/clock/tegra124-car.h index 8c1603b10665..433528ab5161 100644 --- a/include/dt-bindings/clock/tegra124-car.h +++ b/include/dt-bindings/clock/tegra124-car.h @@ -29,7 +29,7 @@ /* 10 (register bit affects spdif_in and spdif_out) */ #define TEGRA124_CLK_I2S1 11 #define TEGRA124_CLK_I2C1 12 -#define TEGRA124_CLK_NDFLASH 13 +/* 13 */ #define TEGRA124_CLK_SDMMC1 14 #define TEGRA124_CLK_SDMMC4 15 /* 16 */ @@ -83,7 +83,7 @@ /* 64 */ #define TEGRA124_CLK_UARTD 65 -#define TEGRA124_CLK_UARTE 66 +/* 66 */ #define TEGRA124_CLK_I2C3 67 #define TEGRA124_CLK_SBC4 68 #define TEGRA124_CLK_SDMMC3 69 @@ -97,7 +97,7 @@ #define TEGRA124_CLK_TRACE 77 #define TEGRA124_CLK_SOC_THERM 78 #define TEGRA124_CLK_DTV 79 -#define TEGRA124_CLK_NDSPEED 80 +/* 80 */ #define TEGRA124_CLK_I2CSLOW 81 #define TEGRA124_CLK_DSIB 82 #define TEGRA124_CLK_TSEC 83 From 2284bb35503ce7b05fce8f0dc8e1cb2a3134ae4e Mon Sep 17 00:00:00 2001 From: Li Jun Date: Thu, 13 Mar 2014 15:22:50 +0800 Subject: [PATCH 289/623] usb: phy: fsm: update OTG HNP state transition According to:"On-The-Go and Embedded Host Supplement to the USB Revision 2.0 Specification July 27, 2012 Revision 2.0 version 1.1a" - add a_wait_vrise to a_wait_vfall - update condition from a_wait_vrise to a_wait_bcon Signed-off-by: Li Jun Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-fsm-usb.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c index c47e5a6edde2..731b4a5d6639 100644 --- a/drivers/usb/phy/phy-fsm-usb.c +++ b/drivers/usb/phy/phy-fsm-usb.c @@ -303,10 +303,11 @@ int otg_statemachine(struct otg_fsm *fsm) otg_set_state(fsm, OTG_STATE_A_WAIT_VRISE); break; case OTG_STATE_A_WAIT_VRISE: - if (fsm->id || fsm->a_bus_drop || fsm->a_vbus_vld || - fsm->a_wait_vrise_tmout) { + if (fsm->a_vbus_vld) otg_set_state(fsm, OTG_STATE_A_WAIT_BCON); - } + else if (fsm->id || fsm->a_bus_drop || + fsm->a_wait_vrise_tmout) + otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); break; case OTG_STATE_A_WAIT_BCON: if (!fsm->a_vbus_vld) From 66668991c3515855e7a9881788feb7026f9f729f Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 13 Mar 2014 15:22:51 +0800 Subject: [PATCH 290/623] usb: phy: fsm: change "|" to "||" for condition OTG_STATE_A_WAIT_BCON at statemachine We should be using logical "or" not bitwise "or". Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/phy/phy-fsm-usb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/phy-fsm-usb.c b/drivers/usb/phy/phy-fsm-usb.c index 731b4a5d6639..d03fadd2629f 100644 --- a/drivers/usb/phy/phy-fsm-usb.c +++ b/drivers/usb/phy/phy-fsm-usb.c @@ -314,7 +314,7 @@ int otg_statemachine(struct otg_fsm *fsm) otg_set_state(fsm, OTG_STATE_A_VBUS_ERR); else if (fsm->b_conn) otg_set_state(fsm, OTG_STATE_A_HOST); - else if (fsm->id | fsm->a_bus_drop | fsm->a_wait_bcon_tmout) + else if (fsm->id || fsm->a_bus_drop || fsm->a_wait_bcon_tmout) otg_set_state(fsm, OTG_STATE_A_WAIT_VFALL); break; case OTG_STATE_A_HOST: From 82c0f5897a8708dbf7abe08e49efd9a4a8d8cd3a Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 23 Apr 2014 17:57:40 -0500 Subject: [PATCH 291/623] of: selftest: add deferred probe interrupt test Signed-off-by: Rob Herring [grant.likely: fixed failure when root node specifies the interrupt parent] Signed-off-by: Grant Likely --- drivers/of/selftest.c | 32 +++++++++++++++++++ .../of/testcase-data/tests-interrupts.dtsi | 13 ++++++++ 2 files changed, 45 insertions(+) diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c index ae4450070503..fe70b86bcffb 100644 --- a/drivers/of/selftest.c +++ b/drivers/of/selftest.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -427,6 +428,36 @@ static void __init of_selftest_match_node(void) } } +static void __init of_selftest_platform_populate(void) +{ + int irq; + struct device_node *np; + struct platform_device *pdev; + + np = of_find_node_by_path("/testcase-data"); + of_platform_populate(np, of_default_bus_match_table, NULL, NULL); + + /* Test that a missing irq domain returns -EPROBE_DEFER */ + np = of_find_node_by_path("/testcase-data/testcase-device1"); + pdev = of_find_device_by_node(np); + if (!pdev) + selftest(0, "device 1 creation failed\n"); + irq = platform_get_irq(pdev, 0); + if (irq != -EPROBE_DEFER) + selftest(0, "device deferred probe failed - %d\n", irq); + + /* Test that a parsing failure does not return -EPROBE_DEFER */ + np = of_find_node_by_path("/testcase-data/testcase-device2"); + pdev = of_find_device_by_node(np); + if (!pdev) + selftest(0, "device 2 creation failed\n"); + irq = platform_get_irq(pdev, 0); + if (irq >= 0 || irq == -EPROBE_DEFER) + selftest(0, "device parsing error failed - %d\n", irq); + + selftest(1, "passed"); +} + static int __init of_selftest(void) { struct device_node *np; @@ -445,6 +476,7 @@ static int __init of_selftest(void) of_selftest_parse_interrupts(); of_selftest_parse_interrupts_extended(); of_selftest_match_node(); + of_selftest_platform_populate(); pr_info("end of selftest - %i passed, %i failed\n", selftest_results.passed, selftest_results.failed); return 0; diff --git a/drivers/of/testcase-data/tests-interrupts.dtsi b/drivers/of/testcase-data/tests-interrupts.dtsi index c843720bd3e5..da4695f60351 100644 --- a/drivers/of/testcase-data/tests-interrupts.dtsi +++ b/drivers/of/testcase-data/tests-interrupts.dtsi @@ -54,5 +54,18 @@ <&test_intmap1 1 2>; }; }; + + testcase-device1 { + compatible = "testcase-device"; + interrupt-parent = <&test_intc0>; + interrupts = <1>; + }; + + testcase-device2 { + compatible = "testcase-device"; + interrupt-parent = <&test_intc2>; + interrupts = <1>; /* invalid specifier - too short */ + }; }; + }; From d08b80373cbb76c9b485b60d49fd3ba82abdf77c Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Thu, 24 Apr 2014 17:19:30 +0100 Subject: [PATCH 292/623] power/reset: vexpress: Fix restart/power off operation The restart/power off implementation in the vexpress driver used to obtain the config function when necessary. This was wrong in two respects: 1. It required memory allocation with disabled interrupts (it worked, but lockdep - when enabled - reported warnings). 2. Used jiffies-based timeout, while jiffies are not running at this stage of system shutdown (therefore a config transaction error - if happened - would have never be reported). Fixed by pre-allocating the config function per device and using mdelay for timeout. Signed-off-by: Pawel Moll --- drivers/power/reset/vexpress-poweroff.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c index 476aa495c110..b95cf71ed695 100644 --- a/drivers/power/reset/vexpress-poweroff.c +++ b/drivers/power/reset/vexpress-poweroff.c @@ -11,7 +11,7 @@ * Copyright (C) 2012 ARM Limited */ -#include +#include #include #include #include @@ -23,17 +23,12 @@ static void vexpress_reset_do(struct device *dev, const char *what) { int err = -ENOENT; - struct vexpress_config_func *func = - vexpress_config_func_get_by_dev(dev); + struct vexpress_config_func *func = dev_get_drvdata(dev); if (func) { - unsigned long timeout; - err = vexpress_config_write(func, 0, 0); - - timeout = jiffies + HZ; - while (time_before(jiffies, timeout)) - cpu_relax(); + if (!err) + mdelay(1000); } dev_emerg(dev, "Unable to %s (%d)\n", what, err); @@ -96,12 +91,18 @@ static int vexpress_reset_probe(struct platform_device *pdev) enum vexpress_reset_func func; const struct of_device_id *match = of_match_device(vexpress_reset_of_match, &pdev->dev); + struct vexpress_config_func *config_func; if (match) func = (enum vexpress_reset_func)match->data; else func = pdev->id_entry->driver_data; + config_func = vexpress_config_func_get_by_dev(&pdev->dev); + if (!config_func) + return -EINVAL; + dev_set_drvdata(&pdev->dev, config_func); + switch (func) { case FUNC_SHUTDOWN: vexpress_power_off_device = &pdev->dev; From cf2e0a73ca9ad376825c013ebaa145608abc27d7 Mon Sep 17 00:00:00 2001 From: Punit Agrawal Date: Wed, 19 Mar 2014 12:43:25 +0000 Subject: [PATCH 293/623] ARM: vexpress/TC2: Convert OPP voltage to uV before storing The SPC stores voltage in mV while the code assumes it was returning uV. Convert the returned voltage to uV before storing. Also fix the comment depicting voltage to uV. Signed-off-by: Punit Agrawal Reviewed-by: Sudeep Holla Signed-off-by: Pawel Moll --- arch/arm/mach-vexpress/spc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c index c26ef5b92ca7..2c2754e79cb3 100644 --- a/arch/arm/mach-vexpress/spc.c +++ b/arch/arm/mach-vexpress/spc.c @@ -392,7 +392,7 @@ static irqreturn_t ve_spc_irq_handler(int irq, void *data) * +--------------------------+ * | 31 20 | 19 0 | * +--------------------------+ - * | u_volt | freq(kHz) | + * | m_volt | freq(kHz) | * +--------------------------+ */ #define MULT_FACTOR 20 @@ -414,7 +414,7 @@ static int ve_spc_populate_opps(uint32_t cluster) ret = ve_spc_read_sys_cfg(SYSCFG_SCC, off, &data); if (!ret) { opps->freq = (data & FREQ_MASK) * MULT_FACTOR; - opps->u_volt = data >> VOLT_SHIFT; + opps->u_volt = (data >> VOLT_SHIFT) * 1000; } else { break; } From 8ea2b17c99b926e2229696eed7f49ac2f73f4619 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Wed, 23 Apr 2014 10:40:12 +0200 Subject: [PATCH 294/623] net: cadence: Fix architecture dependencies I was told that the Cadence macb driver is also useful on Microblaze. Signed-off-by: Jean Delvare Cc: Nicolas Ferre Cc: David S. Miller Cc: Michal Simek Cc: Mark Brown Acked-by: Nicolas Ferre Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/cadence/Kconfig b/drivers/net/ethernet/cadence/Kconfig index 7e49c43b7af3..9e089d24466e 100644 --- a/drivers/net/ethernet/cadence/Kconfig +++ b/drivers/net/ethernet/cadence/Kconfig @@ -4,7 +4,7 @@ config NET_CADENCE bool "Cadence devices" - depends on HAS_IOMEM && (ARM || AVR32 || COMPILE_TEST) + depends on HAS_IOMEM && (ARM || AVR32 || MICROBLAZE || COMPILE_TEST) default y ---help--- If you have a network (Ethernet) card belonging to this class, say Y. @@ -30,7 +30,7 @@ config ARM_AT91_ETHER config MACB tristate "Cadence MACB/GEM support" - depends on HAS_DMA && (PLATFORM_AT32AP || ARCH_AT91 || ARCH_PICOXCELL || ARCH_ZYNQ || COMPILE_TEST) + depends on HAS_DMA && (PLATFORM_AT32AP || ARCH_AT91 || ARCH_PICOXCELL || ARCH_ZYNQ || MICROBLAZE || COMPILE_TEST) select PHYLIB ---help--- The Cadence MACB ethernet interface is found on many Atmel AT32 and From ed2da03c6907800871234f5cae42db7d80de8dfc Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 23 Apr 2014 14:17:55 +0200 Subject: [PATCH 295/623] team: forbid incorrect fall-through in notifier There are two breaks missing there. The result is that userspace receives multiple messages which might be confusing. Introduced-by: 3d249d4c "net: introduce ethernet teaming device" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/team/team.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 33008c1d1d67..767fe61b5ac9 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -2834,8 +2834,10 @@ static int team_device_event(struct notifier_block *unused, case NETDEV_UP: if (netif_carrier_ok(dev)) team_port_change_check(port, true); + break; case NETDEV_DOWN: team_port_change_check(port, false); + break; case NETDEV_CHANGE: if (netif_running(port->dev)) team_port_change_check(port, From f66abe92ce498672ac44d550f51a526597c731c4 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 24 Apr 2014 19:27:49 +0200 Subject: [PATCH 296/623] ACPI / notify: Do not block unknown type notifications in root handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 1a699476e258 "ACPI / hotplug / PCI: Hotplug notifications from acpi_bus_notify()" changed the root notify handler, acpi_bus_notify(), to block unknown type norifications, but it overlooked the fact that they might be propagated to drivers via the ->notify() callback. Fix the problem by allowing drivers to receive unknown type notifications via ->notify() as before. Fixes: 1a699476e258 (ACPI / hotplug / PCI: Hotplug notifications from acpi_bus_notify()) Reported-and-tested-by: Mantas Mikulėnas Reported-and-tested-by: Sitsofe Wheeler Signed-off-by: Rafael J. Wysocki --- drivers/acpi/bus.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index e7e5844c87d0..cf925c4f36b7 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -380,9 +380,8 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; default: - acpi_handle_warn(handle, "Unsupported event type 0x%x\n", type); - ost_code = ACPI_OST_SC_UNRECOGNIZED_NOTIFY; - goto err; + acpi_handle_debug(handle, "Unknown event type 0x%x\n", type); + break; } adev = acpi_bus_get_acpi_device(handle); From 2c97e9e2633f3a4a3a301e5071fb0fe0d0d7543b Mon Sep 17 00:00:00 2001 From: Sony Chacko Date: Wed, 23 Apr 2014 09:59:55 -0400 Subject: [PATCH 297/623] qlcnic: Reset firmware API lock at driver load time Some firmware versions fails to reset the lock during initialization. Force reset firmware API lock during driver probe to ensure lock availability. Signed-off-by: Sony Chacko Signed-off-by: Shahed Shaikh Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index dbf75393f758..0bc914859e38 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -2374,6 +2374,14 @@ void qlcnic_set_drv_version(struct qlcnic_adapter *adapter) qlcnic_fw_cmd_set_drv_version(adapter, fw_cmd); } +/* Reset firmware API lock */ +static void qlcnic_reset_api_lock(struct qlcnic_adapter *adapter) +{ + qlcnic_api_lock(adapter); + qlcnic_api_unlock(adapter); +} + + static int qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -2476,6 +2484,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (qlcnic_82xx_check(adapter)) { qlcnic_check_vf(adapter, ent); adapter->portnum = adapter->ahw->pci_func; + qlcnic_reset_api_lock(adapter); err = qlcnic_start_firmware(adapter); if (err) { dev_err(&pdev->dev, "Loading fw failed.Please Reboot\n" From ab0648e8b6426a009a0e929b137037481b1c2e1e Mon Sep 17 00:00:00 2001 From: Rajesh Borundia Date: Wed, 23 Apr 2014 09:59:56 -0400 Subject: [PATCH 298/623] qlcnic: Fix memory leak. o In case QLC_83XX_MBX_CMD_NO_WAIT command type the calling function does not free the memory as it does not wait for response. So free it when get a response from adapter after sending the command. Signed-off-by: Rajesh Borundia Signed-off-by: Shahed Shaikh Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c index 0638c1810d54..6afe9c1f5ab9 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c @@ -1370,7 +1370,7 @@ static int qlcnic_sriov_issue_cmd(struct qlcnic_adapter *adapter, rsp = qlcnic_sriov_alloc_bc_trans(&trans); if (rsp) - return rsp; + goto free_cmd; rsp = qlcnic_sriov_prepare_bc_hdr(trans, cmd, seq, QLC_BC_COMMAND); if (rsp) @@ -1425,6 +1425,13 @@ err_out: cleanup_transaction: qlcnic_sriov_cleanup_transaction(trans); + +free_cmd: + if (cmd->type == QLC_83XX_MBX_CMD_NO_WAIT) { + qlcnic_free_mbx_args(cmd); + kfree(cmd); + } + return rsp; } From 98a46d46d1bc983125b6ff9a0e831050a7011713 Mon Sep 17 00:00:00 2001 From: Claudiu Manoil Date: Wed, 23 Apr 2014 16:38:47 +0300 Subject: [PATCH 299/623] gianfar: Check if phydev present on ethtool -A This fixes a seg fault on 'ethtool -A' entry if the interface is down. Obviously we need to have the phy device initialized / "connected" (see of_phy_connect()) to be able to advertise pause frame capabilities. Fixes: 23402bddf9e56eecb27bbd1e5467b3b79b3dbe58 Signed-off-by: Claudiu Manoil Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/gianfar_ethtool.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/freescale/gianfar_ethtool.c b/drivers/net/ethernet/freescale/gianfar_ethtool.c index 891dbee6e6c1..76d70708f864 100644 --- a/drivers/net/ethernet/freescale/gianfar_ethtool.c +++ b/drivers/net/ethernet/freescale/gianfar_ethtool.c @@ -533,6 +533,9 @@ static int gfar_spauseparam(struct net_device *dev, struct gfar __iomem *regs = priv->gfargrp[0].regs; u32 oldadv, newadv; + if (!phydev) + return -ENODEV; + if (!(phydev->supported & SUPPORTED_Pause) || (!(phydev->supported & SUPPORTED_Asym_Pause) && (epause->rx_pause != epause->tx_pause))) From 5187cd055b6e81fc6526109456f8b20623148d5f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Apr 2014 14:25:48 -0700 Subject: [PATCH 300/623] netlink: Rename netlink_capable netlink_allowed netlink_capable is a static internal function in af_netlink.c and we have better uses for the name netlink_capable. Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- net/netlink/af_netlink.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 894cda0206bb..7f931fe4d187 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1360,7 +1360,7 @@ retry: return err; } -static inline int netlink_capable(const struct socket *sock, unsigned int flag) +static inline int netlink_allowed(const struct socket *sock, unsigned int flag) { return (nl_table[sock->sk->sk_protocol].flags & flag) || ns_capable(sock_net(sock->sk)->user_ns, CAP_NET_ADMIN); @@ -1428,7 +1428,7 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr, /* Only superuser is allowed to listen multicasts */ if (nladdr->nl_groups) { - if (!netlink_capable(sock, NL_CFG_F_NONROOT_RECV)) + if (!netlink_allowed(sock, NL_CFG_F_NONROOT_RECV)) return -EPERM; err = netlink_realloc_groups(sk); if (err) @@ -1490,7 +1490,7 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr, return -EINVAL; if ((nladdr->nl_groups || nladdr->nl_pid) && - !netlink_capable(sock, NL_CFG_F_NONROOT_SEND)) + !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND)) return -EPERM; if (!nlk->portid) @@ -2096,7 +2096,7 @@ static int netlink_setsockopt(struct socket *sock, int level, int optname, break; case NETLINK_ADD_MEMBERSHIP: case NETLINK_DROP_MEMBERSHIP: { - if (!netlink_capable(sock, NL_CFG_F_NONROOT_RECV)) + if (!netlink_allowed(sock, NL_CFG_F_NONROOT_RECV)) return -EPERM; err = netlink_realloc_groups(sk); if (err) @@ -2247,7 +2247,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock, dst_group = ffs(addr->nl_groups); err = -EPERM; if ((dst_group || dst_portid) && - !netlink_capable(sock, NL_CFG_F_NONROOT_SEND)) + !netlink_allowed(sock, NL_CFG_F_NONROOT_SEND)) goto out; } else { dst_portid = nlk->dst_portid; From a53b72c83a4216f2eb883ed45a0cbce014b8e62d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Apr 2014 14:26:25 -0700 Subject: [PATCH 301/623] net: Move the permission check in sock_diag_put_filterinfo to packet_diag_dump The permission check in sock_diag_put_filterinfo is wrong, and it is so removed from it's sources it is not clear why it is wrong. Move the computation into packet_diag_dump and pass a bool of the result into sock_diag_filterinfo. This does not yet correct the capability check but instead simply moves it to make it clear what is going on. Reported-by: Andy Lutomirski Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- include/linux/sock_diag.h | 2 +- net/core/sock_diag.c | 4 ++-- net/packet/diag.c | 7 ++++++- 3 files changed, 9 insertions(+), 4 deletions(-) diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h index 302ab805b0bb..46cca4c06848 100644 --- a/include/linux/sock_diag.h +++ b/include/linux/sock_diag.h @@ -23,7 +23,7 @@ int sock_diag_check_cookie(void *sk, __u32 *cookie); void sock_diag_save_cookie(void *sk, __u32 *cookie); int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr); -int sock_diag_put_filterinfo(struct sock *sk, +int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk, struct sk_buff *skb, int attrtype); #endif diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index 9deb6abd6cf6..a4216a4c9572 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -49,7 +49,7 @@ int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attrtype) } EXPORT_SYMBOL_GPL(sock_diag_put_meminfo); -int sock_diag_put_filterinfo(struct sock *sk, +int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk, struct sk_buff *skb, int attrtype) { struct sock_fprog_kern *fprog; @@ -58,7 +58,7 @@ int sock_diag_put_filterinfo(struct sock *sk, unsigned int flen; int err = 0; - if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) { + if (!may_report_filterinfo) { nla_reserve(skb, attrtype, 0); return 0; } diff --git a/net/packet/diag.c b/net/packet/diag.c index 435ff99ba8c7..b34d0de24091 100644 --- a/net/packet/diag.c +++ b/net/packet/diag.c @@ -128,6 +128,7 @@ static int pdiag_put_fanout(struct packet_sock *po, struct sk_buff *nlskb) static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct packet_diag_req *req, + bool may_report_filterinfo, struct user_namespace *user_ns, u32 portid, u32 seq, u32 flags, int sk_ino) { @@ -172,7 +173,8 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, goto out_nlmsg_trim; if ((req->pdiag_show & PACKET_SHOW_FILTER) && - sock_diag_put_filterinfo(sk, skb, PACKET_DIAG_FILTER)) + sock_diag_put_filterinfo(may_report_filterinfo, sk, skb, + PACKET_DIAG_FILTER)) goto out_nlmsg_trim; return nlmsg_end(skb, nlh); @@ -188,9 +190,11 @@ static int packet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) struct packet_diag_req *req; struct net *net; struct sock *sk; + bool may_report_filterinfo; net = sock_net(skb->sk); req = nlmsg_data(cb->nlh); + may_report_filterinfo = ns_capable(net->user_ns, CAP_NET_ADMIN); mutex_lock(&net->packet.sklist_lock); sk_for_each(sk, &net->packet.sklist) { @@ -200,6 +204,7 @@ static int packet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) goto next; if (sk_diag_fill(sk, skb, req, + may_report_filterinfo, sk_user_ns(NETLINK_CB(cb->skb).sk), NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI, From a3b299da869d6e78cf42ae0b1b41797bcb8c5e4b Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Apr 2014 14:26:56 -0700 Subject: [PATCH 302/623] net: Add variants of capable for use on on sockets sk_net_capable - The common case, operations that are safe in a network namespace. sk_capable - Operations that are not known to be safe in a network namespace sk_ns_capable - The general case for special cases. Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- include/net/sock.h | 5 +++++ net/core/sock.c | 49 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+) diff --git a/include/net/sock.h b/include/net/sock.h index 8338a14e4805..21569cf456ed 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2255,6 +2255,11 @@ int sock_get_timestampns(struct sock *, struct timespec __user *); int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len, int level, int type); +bool sk_ns_capable(const struct sock *sk, + struct user_namespace *user_ns, int cap); +bool sk_capable(const struct sock *sk, int cap); +bool sk_net_capable(const struct sock *sk, int cap); + /* * Enable debug/info messages */ diff --git a/net/core/sock.c b/net/core/sock.c index b4fff008136f..664ee4295b6f 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -145,6 +145,55 @@ static DEFINE_MUTEX(proto_list_mutex); static LIST_HEAD(proto_list); +/** + * sk_ns_capable - General socket capability test + * @sk: Socket to use a capability on or through + * @user_ns: The user namespace of the capability to use + * @cap: The capability to use + * + * Test to see if the opener of the socket had when the socket was + * created and the current process has the capability @cap in the user + * namespace @user_ns. + */ +bool sk_ns_capable(const struct sock *sk, + struct user_namespace *user_ns, int cap) +{ + return file_ns_capable(sk->sk_socket->file, user_ns, cap) && + ns_capable(user_ns, cap); +} +EXPORT_SYMBOL(sk_ns_capable); + +/** + * sk_capable - Socket global capability test + * @sk: Socket to use a capability on or through + * @cap: The global capbility to use + * + * Test to see if the opener of the socket had when the socket was + * created and the current process has the capability @cap in all user + * namespaces. + */ +bool sk_capable(const struct sock *sk, int cap) +{ + return sk_ns_capable(sk, &init_user_ns, cap); +} +EXPORT_SYMBOL(sk_capable); + +/** + * sk_net_capable - Network namespace socket capability test + * @sk: Socket to use a capability on or through + * @cap: The capability to use + * + * Test to see if the opener of the socket had when the socke was created + * and the current process has the capability @cap over the network namespace + * the socket is a member of. + */ +bool sk_net_capable(const struct sock *sk, int cap) +{ + return sk_ns_capable(sk, sock_net(sk)->user_ns, cap); +} +EXPORT_SYMBOL(sk_net_capable); + + #ifdef CONFIG_MEMCG_KMEM int mem_cgroup_sockets_init(struct mem_cgroup *memcg, struct cgroup_subsys *ss) { From aa4cf9452f469f16cea8c96283b641b4576d4a7b Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Apr 2014 14:28:03 -0700 Subject: [PATCH 303/623] net: Add variants of capable for use on netlink messages netlink_net_capable - The common case use, for operations that are safe on a network namespace netlink_capable - For operations that are only known to be safe for the global root netlink_ns_capable - The general case of capable used to handle special cases __netlink_ns_capable - Same as netlink_ns_capable except taking a netlink_skb_parms instead of the skbuff of a netlink message. Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- include/linux/netlink.h | 7 +++++ net/netlink/af_netlink.c | 65 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 72 insertions(+) diff --git a/include/linux/netlink.h b/include/linux/netlink.h index aad8eeaf416d..f64b01787ddc 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -169,4 +169,11 @@ struct netlink_tap { extern int netlink_add_tap(struct netlink_tap *nt); extern int netlink_remove_tap(struct netlink_tap *nt); +bool __netlink_ns_capable(const struct netlink_skb_parms *nsp, + struct user_namespace *ns, int cap); +bool netlink_ns_capable(const struct sk_buff *skb, + struct user_namespace *ns, int cap); +bool netlink_capable(const struct sk_buff *skb, int cap); +bool netlink_net_capable(const struct sk_buff *skb, int cap); + #endif /* __LINUX_NETLINK_H */ diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 7f931fe4d187..81dca96d2be6 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1360,6 +1360,71 @@ retry: return err; } +/** + * __netlink_ns_capable - General netlink message capability test + * @nsp: NETLINK_CB of the socket buffer holding a netlink command from userspace. + * @user_ns: The user namespace of the capability to use + * @cap: The capability to use + * + * Test to see if the opener of the socket we received the message + * from had when the netlink socket was created and the sender of the + * message has has the capability @cap in the user namespace @user_ns. + */ +bool __netlink_ns_capable(const struct netlink_skb_parms *nsp, + struct user_namespace *user_ns, int cap) +{ + return sk_ns_capable(nsp->sk, user_ns, cap); +} +EXPORT_SYMBOL(__netlink_ns_capable); + +/** + * netlink_ns_capable - General netlink message capability test + * @skb: socket buffer holding a netlink command from userspace + * @user_ns: The user namespace of the capability to use + * @cap: The capability to use + * + * Test to see if the opener of the socket we received the message + * from had when the netlink socket was created and the sender of the + * message has has the capability @cap in the user namespace @user_ns. + */ +bool netlink_ns_capable(const struct sk_buff *skb, + struct user_namespace *user_ns, int cap) +{ + return __netlink_ns_capable(&NETLINK_CB(skb), user_ns, cap); +} +EXPORT_SYMBOL(netlink_ns_capable); + +/** + * netlink_capable - Netlink global message capability test + * @skb: socket buffer holding a netlink command from userspace + * @cap: The capability to use + * + * Test to see if the opener of the socket we received the message + * from had when the netlink socket was created and the sender of the + * message has has the capability @cap in all user namespaces. + */ +bool netlink_capable(const struct sk_buff *skb, int cap) +{ + return netlink_ns_capable(skb, &init_user_ns, cap); +} +EXPORT_SYMBOL(netlink_capable); + +/** + * netlink_net_capable - Netlink network namespace message capability test + * @skb: socket buffer holding a netlink command from userspace + * @cap: The capability to use + * + * Test to see if the opener of the socket we received the message + * from had when the netlink socket was created and the sender of the + * message has has the capability @cap over the network namespace of + * the socket we received the message from. + */ +bool netlink_net_capable(const struct sk_buff *skb, int cap) +{ + return netlink_ns_capable(skb, sock_net(skb->sk)->user_ns, cap); +} +EXPORT_SYMBOL(netlink_net_capable); + static inline int netlink_allowed(const struct socket *sock, unsigned int flag) { return (nl_table[sock->sk->sk_protocol].flags & flag) || From 90f62cf30a78721641e08737bda787552428061e Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 23 Apr 2014 14:29:27 -0700 Subject: [PATCH 304/623] net: Use netlink_ns_capable to verify the permisions of netlink messages It is possible by passing a netlink socket to a more privileged executable and then to fool that executable into writing to the socket data that happens to be valid netlink message to do something that privileged executable did not intend to do. To keep this from happening replace bare capable and ns_capable calls with netlink_capable, netlink_net_calls and netlink_ns_capable calls. Which act the same as the previous calls except they verify that the opener of the socket had the desired permissions as well. Reported-by: Andy Lutomirski Signed-off-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- crypto/crypto_user.c | 2 +- drivers/connector/cn_proc.c | 2 +- drivers/scsi/scsi_netlink.c | 2 +- kernel/audit.c | 4 ++-- net/can/gw.c | 4 ++-- net/core/rtnetlink.c | 20 +++++++++++--------- net/dcb/dcbnl.c | 2 +- net/decnet/dn_dev.c | 4 ++-- net/decnet/dn_fib.c | 4 ++-- net/decnet/netfilter/dn_rtmsg.c | 2 +- net/netfilter/nfnetlink.c | 2 +- net/netlink/genetlink.c | 2 +- net/packet/diag.c | 2 +- net/phonet/pn_netlink.c | 8 ++++---- net/sched/act_api.c | 2 +- net/sched/cls_api.c | 2 +- net/sched/sch_api.c | 6 +++--- net/tipc/netlink.c | 2 +- net/xfrm/xfrm_user.c | 2 +- 19 files changed, 38 insertions(+), 36 deletions(-) diff --git a/crypto/crypto_user.c b/crypto/crypto_user.c index 1512e41cd93d..43665d0d0905 100644 --- a/crypto/crypto_user.c +++ b/crypto/crypto_user.c @@ -466,7 +466,7 @@ static int crypto_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) type -= CRYPTO_MSG_BASE; link = &crypto_dispatch[type]; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if ((type == (CRYPTO_MSG_GETALG - CRYPTO_MSG_BASE) && diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 148d707a1d43..ccdd4c7e748b 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -369,7 +369,7 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg, return; /* Can only change if privileged. */ - if (!capable(CAP_NET_ADMIN)) { + if (!__netlink_ns_capable(nsp, &init_user_ns, CAP_NET_ADMIN)) { err = EPERM; goto out; } diff --git a/drivers/scsi/scsi_netlink.c b/drivers/scsi/scsi_netlink.c index fe30ea94ffe6..109802f776ed 100644 --- a/drivers/scsi/scsi_netlink.c +++ b/drivers/scsi/scsi_netlink.c @@ -77,7 +77,7 @@ scsi_nl_rcv_msg(struct sk_buff *skb) goto next_msg; } - if (!capable(CAP_SYS_ADMIN)) { + if (!netlink_capable(skb, CAP_SYS_ADMIN)) { err = -EPERM; goto next_msg; } diff --git a/kernel/audit.c b/kernel/audit.c index 7c2893602d06..47845c57eb19 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -643,13 +643,13 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type) if ((task_active_pid_ns(current) != &init_pid_ns)) return -EPERM; - if (!capable(CAP_AUDIT_CONTROL)) + if (!netlink_capable(skb, CAP_AUDIT_CONTROL)) err = -EPERM; break; case AUDIT_USER: case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG: case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2: - if (!capable(CAP_AUDIT_WRITE)) + if (!netlink_capable(skb, CAP_AUDIT_WRITE)) err = -EPERM; break; default: /* bad msg */ diff --git a/net/can/gw.c b/net/can/gw.c index ac31891967da..050a2110d43f 100644 --- a/net/can/gw.c +++ b/net/can/gw.c @@ -804,7 +804,7 @@ static int cgw_create_job(struct sk_buff *skb, struct nlmsghdr *nlh) u8 limhops = 0; int err = 0; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (nlmsg_len(nlh) < sizeof(*r)) @@ -893,7 +893,7 @@ static int cgw_remove_job(struct sk_buff *skb, struct nlmsghdr *nlh) u8 limhops = 0; int err = 0; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (nlmsg_len(nlh) < sizeof(*r)) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index d4ff41739b0f..64ad17d077ed 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1395,7 +1395,8 @@ static int do_set_master(struct net_device *dev, int ifindex) return 0; } -static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, +static int do_setlink(const struct sk_buff *skb, + struct net_device *dev, struct ifinfomsg *ifm, struct nlattr **tb, char *ifname, int modified) { const struct net_device_ops *ops = dev->netdev_ops; @@ -1407,7 +1408,7 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, err = PTR_ERR(net); goto errout; } - if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { + if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { err = -EPERM; goto errout; } @@ -1661,7 +1662,7 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) if (err < 0) goto errout; - err = do_setlink(dev, ifm, tb, ifname, 0); + err = do_setlink(skb, dev, ifm, tb, ifname, 0); errout: return err; } @@ -1778,7 +1779,8 @@ err: } EXPORT_SYMBOL(rtnl_create_link); -static int rtnl_group_changelink(struct net *net, int group, +static int rtnl_group_changelink(const struct sk_buff *skb, + struct net *net, int group, struct ifinfomsg *ifm, struct nlattr **tb) { @@ -1787,7 +1789,7 @@ static int rtnl_group_changelink(struct net *net, int group, for_each_netdev(net, dev) { if (dev->group == group) { - err = do_setlink(dev, ifm, tb, NULL, 0); + err = do_setlink(skb, dev, ifm, tb, NULL, 0); if (err < 0) return err; } @@ -1929,12 +1931,12 @@ replay: modified = 1; } - return do_setlink(dev, ifm, tb, ifname, modified); + return do_setlink(skb, dev, ifm, tb, ifname, modified); } if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) - return rtnl_group_changelink(net, + return rtnl_group_changelink(skb, net, nla_get_u32(tb[IFLA_GROUP]), ifm, tb); return -ENODEV; @@ -2321,7 +2323,7 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) int err = -EINVAL; __u8 *addr; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); @@ -2773,7 +2775,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) sz_idx = type>>2; kind = type&3; - if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN)) + if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index 553644402670..f8b98d89c285 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -1669,7 +1669,7 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh) struct nlmsghdr *reply_nlh = NULL; const struct reply_func *fn; - if ((nlh->nlmsg_type == RTM_SETDCB) && !capable(CAP_NET_ADMIN)) + if ((nlh->nlmsg_type == RTM_SETDCB) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX, diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c index a603823a3e27..3b726f31c64c 100644 --- a/net/decnet/dn_dev.c +++ b/net/decnet/dn_dev.c @@ -574,7 +574,7 @@ static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) struct dn_ifaddr __rcu **ifap; int err = -EINVAL; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) @@ -618,7 +618,7 @@ static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh) struct dn_ifaddr *ifa; int err; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) diff --git a/net/decnet/dn_fib.c b/net/decnet/dn_fib.c index 57dc159245ec..d332aefb0846 100644 --- a/net/decnet/dn_fib.c +++ b/net/decnet/dn_fib.c @@ -505,7 +505,7 @@ static int dn_fib_rtm_delroute(struct sk_buff *skb, struct nlmsghdr *nlh) struct nlattr *attrs[RTA_MAX+1]; int err; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) @@ -530,7 +530,7 @@ static int dn_fib_rtm_newroute(struct sk_buff *skb, struct nlmsghdr *nlh) struct nlattr *attrs[RTA_MAX+1]; int err; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if (!net_eq(net, &init_net)) diff --git a/net/decnet/netfilter/dn_rtmsg.c b/net/decnet/netfilter/dn_rtmsg.c index e83015cecfa7..e4d9560a910b 100644 --- a/net/decnet/netfilter/dn_rtmsg.c +++ b/net/decnet/netfilter/dn_rtmsg.c @@ -107,7 +107,7 @@ static inline void dnrmg_receive_user_skb(struct sk_buff *skb) if (nlh->nlmsg_len < sizeof(*nlh) || skb->len < nlh->nlmsg_len) return; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) RCV_SKB_FAIL(-EPERM); /* Eventually we might send routing messages too */ diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index e8138da4c14f..84392f3237c1 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -375,7 +375,7 @@ static void nfnetlink_rcv(struct sk_buff *skb) skb->len < nlh->nlmsg_len) return; - if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { + if (!netlink_net_capable(skb, CAP_NET_ADMIN)) { netlink_ack(skb, nlh, -EPERM); return; } diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index b1dcdb932a86..a3ba3ca0ff92 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -561,7 +561,7 @@ static int genl_family_rcv_msg(struct genl_family *family, return -EOPNOTSUPP; if ((ops->flags & GENL_ADMIN_PERM) && - !capable(CAP_NET_ADMIN)) + !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; if ((nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP) { diff --git a/net/packet/diag.c b/net/packet/diag.c index b34d0de24091..92f2c7107eec 100644 --- a/net/packet/diag.c +++ b/net/packet/diag.c @@ -194,7 +194,7 @@ static int packet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb) net = sock_net(skb->sk); req = nlmsg_data(cb->nlh); - may_report_filterinfo = ns_capable(net->user_ns, CAP_NET_ADMIN); + may_report_filterinfo = netlink_net_capable(cb->skb, CAP_NET_ADMIN); mutex_lock(&net->packet.sklist_lock); sk_for_each(sk, &net->packet.sklist) { diff --git a/net/phonet/pn_netlink.c b/net/phonet/pn_netlink.c index dc15f4300808..b64151ade6b3 100644 --- a/net/phonet/pn_netlink.c +++ b/net/phonet/pn_netlink.c @@ -70,10 +70,10 @@ static int addr_doit(struct sk_buff *skb, struct nlmsghdr *nlh) int err; u8 pnaddr; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; - if (!capable(CAP_SYS_ADMIN)) + if (!netlink_capable(skb, CAP_SYS_ADMIN)) return -EPERM; ASSERT_RTNL(); @@ -233,10 +233,10 @@ static int route_doit(struct sk_buff *skb, struct nlmsghdr *nlh) int err; u8 dst; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; - if (!capable(CAP_SYS_ADMIN)) + if (!netlink_capable(skb, CAP_SYS_ADMIN)) return -EPERM; ASSERT_RTNL(); diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 8a5ba5add4bc..648778aef1a2 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -948,7 +948,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n) u32 portid = skb ? NETLINK_CB(skb).portid : 0; int ret = 0, ovr = 0; - if ((n->nlmsg_type != RTM_GETACTION) && !capable(CAP_NET_ADMIN)) + if ((n->nlmsg_type != RTM_GETACTION) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL); diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c index 29a30a14c315..bdbdb1a7920a 100644 --- a/net/sched/cls_api.c +++ b/net/sched/cls_api.c @@ -134,7 +134,7 @@ static int tc_ctl_tfilter(struct sk_buff *skb, struct nlmsghdr *n) int err; int tp_created = 0; - if ((n->nlmsg_type != RTM_GETTFILTER) && !capable(CAP_NET_ADMIN)) + if ((n->nlmsg_type != RTM_GETTFILTER) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; replay: diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index a0b84e0e22de..400769014bbd 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -1084,7 +1084,7 @@ static int tc_get_qdisc(struct sk_buff *skb, struct nlmsghdr *n) struct Qdisc *p = NULL; int err; - if ((n->nlmsg_type != RTM_GETQDISC) && !capable(CAP_NET_ADMIN)) + if ((n->nlmsg_type != RTM_GETQDISC) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); @@ -1151,7 +1151,7 @@ static int tc_modify_qdisc(struct sk_buff *skb, struct nlmsghdr *n) struct Qdisc *q, *p; int err; - if (!capable(CAP_NET_ADMIN)) + if (!netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; replay: @@ -1490,7 +1490,7 @@ static int tc_ctl_tclass(struct sk_buff *skb, struct nlmsghdr *n) u32 qid; int err; - if ((n->nlmsg_type != RTM_GETTCLASS) && !capable(CAP_NET_ADMIN)) + if ((n->nlmsg_type != RTM_GETTCLASS) && !netlink_capable(skb, CAP_NET_ADMIN)) return -EPERM; err = nlmsg_parse(n, sizeof(*tcm), tca, TCA_MAX, NULL); diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c index 3aaf73de9e2d..ad844d365340 100644 --- a/net/tipc/netlink.c +++ b/net/tipc/netlink.c @@ -47,7 +47,7 @@ static int handle_cmd(struct sk_buff *skb, struct genl_info *info) int hdr_space = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN); u16 cmd; - if ((req_userhdr->cmd & 0xC000) && (!capable(CAP_NET_ADMIN))) + if ((req_userhdr->cmd & 0xC000) && (!netlink_capable(skb, CAP_NET_ADMIN))) cmd = TIPC_CMD_NOT_NET_ADMIN; else cmd = req_userhdr->cmd; diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 8f131c10a6f3..51398ae6cda8 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -2377,7 +2377,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) link = &xfrm_dispatch[type]; /* All operations require privileges, even GET */ - if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) + if (!netlink_net_capable(skb, CAP_NET_ADMIN)) return -EPERM; if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) || From a64d90fd962c2956da7505f98a302408450365e2 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 24 Apr 2014 13:51:29 -0400 Subject: [PATCH 305/623] netfilter: Fix warning in nfnetlink_receive(). MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit net/netfilter/nfnetlink.c: In function ‘nfnetlink_rcv’: net/netfilter/nfnetlink.c:371:14: warning: unused variable ‘net’ [-Wunused-variable] Signed-off-by: David S. Miller --- net/netfilter/nfnetlink.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index 84392f3237c1..e009087620e3 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -368,7 +368,6 @@ done: static void nfnetlink_rcv(struct sk_buff *skb) { struct nlmsghdr *nlh = nlmsg_hdr(skb); - struct net *net = sock_net(skb->sk); int msglen; if (nlh->nlmsg_len < NLMSG_HDRLEN || From 973462bbde79bb827824c73b59027a0aed5c9ca6 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 24 Apr 2014 10:22:35 +1000 Subject: [PATCH 306/623] rtnetlink: Warn when interface's information won't fit in our packet Without IFLA_EXT_MASK specified, the information reported for a single interface in response to RTM_GETLINK is expected to fit within a netlink packet of NLMSG_GOODSIZE. If it doesn't, however, things will go badly wrong, When listing all interfaces, netlink_dump() will incorrectly treat -EMSGSIZE on the first message in a packet as the end of the listing and omit information for that interface and all subsequent ones. This can cause getifaddrs(3) to enter an infinite loop. This patch won't fix the problem, but it will WARN_ON() making it easier to track down what's going wrong. Signed-off-by: David Gibson Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 64ad17d077ed..8db72ac88feb 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1198,6 +1198,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) struct hlist_head *head; struct nlattr *tb[IFLA_MAX+1]; u32 ext_filter_mask = 0; + int err; s_h = cb->args[0]; s_idx = cb->args[1]; @@ -1218,11 +1219,17 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) hlist_for_each_entry_rcu(dev, head, index_hlist) { if (idx < s_idx) goto cont; - if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, - NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, 0, - NLM_F_MULTI, - ext_filter_mask) <= 0) + err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, + NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, 0, + NLM_F_MULTI, + ext_filter_mask); + /* If we ran out of room on the first message, + * we're in trouble + */ + WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); + + if (err <= 0) goto out; nl_dump_check_consistent(cb, nlmsg_hdr(skb)); From c53864fd60227de025cb79e05493b13f69843971 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 24 Apr 2014 10:22:36 +1000 Subject: [PATCH 307/623] rtnetlink: Only supply IFLA_VF_PORTS information when RTEXT_FILTER_VF is set Since 115c9b81928360d769a76c632bae62d15206a94a (rtnetlink: Fix problem with buffer allocation), RTM_NEWLINK messages only contain the IFLA_VFINFO_LIST attribute if they were solicited by a GETLINK message containing an IFLA_EXT_MASK attribute with the RTEXT_FILTER_VF flag. That was done because some user programs broke when they received more data than expected - because IFLA_VFINFO_LIST contains information for each VF it can become large if there are many VFs. However, the IFLA_VF_PORTS attribute, supplied for devices which implement ndo_get_vf_port (currently the 'enic' driver only), has the same problem. It supplies per-VF information and can therefore become large, but it is not currently conditional on the IFLA_EXT_MASK value. Worse, it interacts badly with the existing EXT_MASK handling. When IFLA_EXT_MASK is not supplied, the buffer for netlink replies is fixed at NLMSG_GOODSIZE. If the information for IFLA_VF_PORTS exceeds this, then rtnl_fill_ifinfo() returns -EMSGSIZE on the first message in a packet. netlink_dump() will misinterpret this as having finished the listing and omit data for this interface and all subsequent ones. That can cause getifaddrs(3) to enter an infinite loop. This patch addresses the problem by only supplying IFLA_VF_PORTS when IFLA_EXT_MASK is supplied with the RTEXT_FILTER_VF flag set. Signed-off-by: David Gibson Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 8db72ac88feb..9837bebf93ce 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -774,7 +774,8 @@ static inline int rtnl_vfinfo_size(const struct net_device *dev, return 0; } -static size_t rtnl_port_size(const struct net_device *dev) +static size_t rtnl_port_size(const struct net_device *dev, + u32 ext_filter_mask) { size_t port_size = nla_total_size(4) /* PORT_VF */ + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ @@ -790,7 +791,8 @@ static size_t rtnl_port_size(const struct net_device *dev) size_t port_self_size = nla_total_size(sizeof(struct nlattr)) + port_size; - if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) + if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || + !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; if (dev_num_vf(dev->dev.parent)) return port_self_size + vf_ports_size + @@ -826,7 +828,7 @@ static noinline size_t if_nlmsg_size(const struct net_device *dev, + nla_total_size(ext_filter_mask & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ - + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ + + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ + nla_total_size(MAX_PHYS_PORT_ID_LEN); /* IFLA_PHYS_PORT_ID */ @@ -888,11 +890,13 @@ static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) return 0; } -static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) +static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, + u32 ext_filter_mask) { int err; - if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) + if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || + !(ext_filter_mask & RTEXT_FILTER_VF)) return 0; err = rtnl_port_self_fill(skb, dev); @@ -1079,7 +1083,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, nla_nest_end(skb, vfinfo); } - if (rtnl_port_fill(skb, dev)) + if (rtnl_port_fill(skb, dev, ext_filter_mask)) goto nla_put_failure; if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { From cd84f009e98b3aa6109503f80f66ccf3e19e8fa9 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Thu, 24 Apr 2014 08:15:27 +0800 Subject: [PATCH 308/623] usb: chipidea: coordinate usb phy initialization for different phy type For internal PHY (like UTMI), the phy clock may from internal pll, it is on/off on the fly, the access PORTSC.PTS will hang without phy clock. So, the usb_phy_init which will open phy clock needs to be called before hw_phymode_configure. See: http://marc.info/?l=linux-arm-kernel&m=139350618732108&w=2 For external PHY (like ulpi), it needs to configure portsc.pts before visit viewport, or the viewport can't be visited. so phy_phymode_configure needs to be called before usb_phy_init. See: cd0b42c2a6d2a74244f0053f8960f5dad5842278 It may not the best solution, but it can work for all situations. Cc: Sascha Hauer Cc: Chris Ruehl Cc: shc_work@mail.ru Cc: denis@eukrea.com Cc: festevam@gmail.com Cc: stable # 3.14 Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 37 ++++++++++++++++++++++++++++++++++--- 1 file changed, 34 insertions(+), 3 deletions(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index ca6831c5b763..1cd5d0ba587c 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -276,6 +276,39 @@ static void hw_phymode_configure(struct ci_hdrc *ci) } } +/** + * ci_usb_phy_init: initialize phy according to different phy type + * @ci: the controller + * + * This function returns an error code if usb_phy_init has failed + */ +static int ci_usb_phy_init(struct ci_hdrc *ci) +{ + int ret; + + switch (ci->platdata->phy_mode) { + case USBPHY_INTERFACE_MODE_UTMI: + case USBPHY_INTERFACE_MODE_UTMIW: + case USBPHY_INTERFACE_MODE_HSIC: + ret = usb_phy_init(ci->transceiver); + if (ret) + return ret; + hw_phymode_configure(ci); + break; + case USBPHY_INTERFACE_MODE_ULPI: + case USBPHY_INTERFACE_MODE_SERIAL: + hw_phymode_configure(ci); + ret = usb_phy_init(ci->transceiver); + if (ret) + return ret; + break; + default: + ret = usb_phy_init(ci->transceiver); + } + + return ret; +} + /** * hw_device_reset: resets chip (execute without interruption) * @ci: the controller @@ -543,8 +576,6 @@ static int ci_hdrc_probe(struct platform_device *pdev) return -ENODEV; } - hw_phymode_configure(ci); - if (ci->platdata->phy) ci->transceiver = ci->platdata->phy; else @@ -564,7 +595,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) return -EPROBE_DEFER; } - ret = usb_phy_init(ci->transceiver); + ret = ci_usb_phy_init(ci); if (ret) { dev_err(dev, "unable to init phy: %d\n", ret); return ret; From c996b9379180ee578b9ea208bb4f197201bbb023 Mon Sep 17 00:00:00 2001 From: Thomas Pugliese Date: Wed, 23 Apr 2014 14:42:47 -0500 Subject: [PATCH 309/623] uwb: don't call spin_unlock_irq in a USB completion handler This patch converts the use of spin_lock_irq/spin_unlock_irq to spin_lock_irqsave/spin_unlock_irqrestore in uwb_rc_set_drp_cmd_done which is called from a USB completion handler. There are also whitespace cleanups to make checkpatch.pl happy. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman --- drivers/uwb/drp.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c index 1a2fd9795367..468c89fb6a16 100644 --- a/drivers/uwb/drp.c +++ b/drivers/uwb/drp.c @@ -59,6 +59,7 @@ static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg, struct uwb_rceb *reply, ssize_t reply_size) { struct uwb_rc_evt_set_drp_ie *r = (struct uwb_rc_evt_set_drp_ie *)reply; + unsigned long flags; if (r != NULL) { if (r->bResultCode != UWB_RC_RES_SUCCESS) @@ -67,14 +68,14 @@ static void uwb_rc_set_drp_cmd_done(struct uwb_rc *rc, void *arg, } else dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n"); - spin_lock_irq(&rc->rsvs_lock); + spin_lock_irqsave(&rc->rsvs_lock, flags); if (rc->set_drp_ie_pending > 1) { rc->set_drp_ie_pending = 0; - uwb_rsv_queue_update(rc); + uwb_rsv_queue_update(rc); } else { - rc->set_drp_ie_pending = 0; + rc->set_drp_ie_pending = 0; } - spin_unlock_irq(&rc->rsvs_lock); + spin_unlock_irqrestore(&rc->rsvs_lock, flags); } /** From 7584f2ebc18b6355f21be5fb2f75afbf3f781ce5 Mon Sep 17 00:00:00 2001 From: Thomas Pugliese Date: Wed, 23 Apr 2014 14:32:27 -0500 Subject: [PATCH 310/623] usb: wusbcore: convert nested lock to use spin_lock instead of spin_lock_irq Nesting a spin_lock_irq/unlock_irq inside a lock that has already disabled interrupts will enable interrupts before we are ready when spin_unlock_irq is called. This patch converts the inner lock to use spin_lock and spin_unlock instead. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/wa-xfer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index c8e2a47d62a7..3e2e4ed20157 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -2390,10 +2390,10 @@ error_complete: done) { dev_info(dev, "Control EP stall. Queue delayed work.\n"); - spin_lock_irq(&wa->xfer_list_lock); + spin_lock(&wa->xfer_list_lock); /* move xfer from xfer_list to xfer_errored_list. */ list_move_tail(&xfer->list_node, &wa->xfer_errored_list); - spin_unlock_irq(&wa->xfer_list_lock); + spin_unlock(&wa->xfer_list_lock); spin_unlock_irqrestore(&xfer->lock, flags); queue_work(wusbd, &wa->xfer_error_work); } else { From bd130adacaf8cea179f9a700fb694f5be3b05bf0 Mon Sep 17 00:00:00 2001 From: Thomas Pugliese Date: Wed, 23 Apr 2014 14:28:10 -0500 Subject: [PATCH 311/623] usb: wusbcore: fix panic in wusbhc_chid_set If no valid CHID value has previously been set on an HWA, writing a value of all zeros will cause a kernel panic in uwb_radio_stop because wusbhc->uwb_rc has not been set. This patch skips the call to uwb_radio_stop if wusbhc->uwb_rc has not been initialized. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman --- drivers/usb/wusbcore/mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c index 44741267c917..3f485df96226 100644 --- a/drivers/usb/wusbcore/mmc.c +++ b/drivers/usb/wusbcore/mmc.c @@ -301,7 +301,7 @@ int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid) if (chid) result = uwb_radio_start(&wusbhc->pal); - else + else if (wusbhc->uwb_rc) uwb_radio_stop(&wusbhc->pal); return result; From 10164c2ad6d2c16809f6c09e278f946e47801b3a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 23 Apr 2014 11:32:19 +0200 Subject: [PATCH 312/623] USB: serial: fix sysfs-attribute removal deadlock Fix driver new_id sysfs-attribute removal deadlock by making sure to not hold any locks that the attribute operations grab when removing the attribute. Specifically, usb_serial_deregister holds the table mutex when deregistering the driver, which includes removing the new_id attribute. This can lead to a deadlock as writing to new_id increments the attribute's active count before trying to grab the same mutex in usb_serial_probe. The deadlock can easily be triggered by inserting a sleep in usb_serial_deregister and writing the id of an unbound device to new_id during module unload. As the table mutex (in this case) is used to prevent subdriver unload during probe, it should be sufficient to only hold the lock while manipulating the usb-serial driver list during deregister. A racing probe will then either fail to find a matching subdriver or fail to get the corresponding module reference. Since v3.15-rc1 this also triggers the following lockdep warning: ====================================================== [ INFO: possible circular locking dependency detected ] 3.15.0-rc2 #123 Tainted: G W ------------------------------------------------------- modprobe/190 is trying to acquire lock: (s_active#4){++++.+}, at: [] kernfs_remove_by_name_ns+0x4c/0x94 but task is already holding lock: (table_lock){+.+.+.}, at: [] usb_serial_deregister+0x3c/0x78 [usbserial] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (table_lock){+.+.+.}: [] __lock_acquire+0x1694/0x1ce4 [] lock_acquire+0xb4/0x154 [] _raw_spin_lock+0x4c/0x5c [] usb_store_new_id+0x14c/0x1ac [] new_id_store+0x68/0x70 [usbserial] [] drv_attr_store+0x30/0x3c [] sysfs_kf_write+0x5c/0x60 [] kernfs_fop_write+0xd4/0x194 [] vfs_write+0xbc/0x198 [] SyS_write+0x4c/0xa0 [] ret_fast_syscall+0x0/0x48 -> #0 (s_active#4){++++.+}: [] print_circular_bug+0x68/0x2f8 [] __lock_acquire+0x1928/0x1ce4 [] lock_acquire+0xb4/0x154 [] __kernfs_remove+0x254/0x310 [] kernfs_remove_by_name_ns+0x4c/0x94 [] remove_files.isra.1+0x48/0x84 [] sysfs_remove_group+0x58/0xac [] sysfs_remove_groups+0x34/0x44 [] driver_remove_groups+0x1c/0x20 [] bus_remove_driver+0x3c/0xe4 [] driver_unregister+0x38/0x58 [] usb_serial_bus_deregister+0x84/0x88 [usbserial] [] usb_serial_deregister+0x6c/0x78 [usbserial] [] usb_serial_deregister_drivers+0x2c/0x4c [usbserial] [] usb_serial_module_exit+0x14/0x1c [sierra] [] SyS_delete_module+0x184/0x210 [] ret_fast_syscall+0x0/0x48 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(table_lock); lock(s_active#4); lock(table_lock); lock(s_active#4); *** DEADLOCK *** 1 lock held by modprobe/190: #0: (table_lock){+.+.+.}, at: [] usb_serial_deregister+0x3c/0x78 [usbserial] stack backtrace: CPU: 0 PID: 190 Comm: modprobe Tainted: G W 3.15.0-rc2 #123 [] (unwind_backtrace) from [] (show_stack+0x20/0x24) [] (show_stack) from [] (dump_stack+0x24/0x28) [] (dump_stack) from [] (print_circular_bug+0x2ec/0x2f8) [] (print_circular_bug) from [] (__lock_acquire+0x1928/0x1ce4) [] (__lock_acquire) from [] (lock_acquire+0xb4/0x154) [] (lock_acquire) from [] (__kernfs_remove+0x254/0x310) [] (__kernfs_remove) from [] (kernfs_remove_by_name_ns+0x4c/0x94) [] (kernfs_remove_by_name_ns) from [] (remove_files.isra.1+0x48/0x84) [] (remove_files.isra.1) from [] (sysfs_remove_group+0x58/0xac) [] (sysfs_remove_group) from [] (sysfs_remove_groups+0x34/0x44) [] (sysfs_remove_groups) from [] (driver_remove_groups+0x1c/0x20) [] (driver_remove_groups) from [] (bus_remove_driver+0x3c/0xe4) [] (bus_remove_driver) from [] (driver_unregister+0x38/0x58) [] (driver_unregister) from [] (usb_serial_bus_deregister+0x84/0x88 [usbserial]) [] (usb_serial_bus_deregister [usbserial]) from [] (usb_serial_deregister+0x6c/0x78 [usbserial]) [] (usb_serial_deregister [usbserial]) from [] (usb_serial_deregister_drivers+0x2c/0x4c [usbserial]) [] (usb_serial_deregister_drivers [usbserial]) from [] (usb_serial_module_exit+0x14/0x1c [sierra]) [] (usb_serial_module_exit [sierra]) from [] (SyS_delete_module+0x184/0x210) [] (SyS_delete_module) from [] (ret_fast_syscall+0x0/0x48) Signed-off-by: Johan Hovold Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 81fc0dfcfdcf..6d40d56378d7 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -1347,10 +1347,12 @@ static int usb_serial_register(struct usb_serial_driver *driver) static void usb_serial_deregister(struct usb_serial_driver *device) { pr_info("USB Serial deregistering driver %s\n", device->description); + mutex_lock(&table_lock); list_del(&device->driver_list); - usb_serial_bus_deregister(device); mutex_unlock(&table_lock); + + usb_serial_bus_deregister(device); } /** From d1481832f1dbb9d10fab27269631a130fa082f03 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 19 Apr 2014 08:51:41 +0530 Subject: [PATCH 313/623] phy: exynos: fix building as a module The top-level phy-samsung-usb2 driver may be configured as a loadable module, which currently causes link errors because of the dependency on the exynos{5250,4x12,4210}_usb2_phy_config symbol. Solving this could be achieved by exporting these symbols, but as the SoC-specific parts of the driver are not currently built as modules, it seems better to just link everything into one module and avoid the need for the export. Signed-off-by: Arnd Bergmann Acked-by: Kamil Debski Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Greg Kroah-Hartman --- drivers/phy/Makefile | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index 2faf78edc864..7728518572a4 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -13,8 +13,9 @@ obj-$(CONFIG_TI_PIPE3) += phy-ti-pipe3.o obj-$(CONFIG_TWL4030_USB) += phy-twl4030-usb.o obj-$(CONFIG_PHY_EXYNOS5250_SATA) += phy-exynos5250-sata.o obj-$(CONFIG_PHY_SUN4I_USB) += phy-sun4i-usb.o -obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-samsung-usb2.o -obj-$(CONFIG_PHY_EXYNOS4210_USB2) += phy-exynos4210-usb2.o -obj-$(CONFIG_PHY_EXYNOS4X12_USB2) += phy-exynos4x12-usb2.o -obj-$(CONFIG_PHY_EXYNOS5250_USB2) += phy-exynos5250-usb2.o +obj-$(CONFIG_PHY_SAMSUNG_USB2) += phy-exynos-usb2.o +phy-exynos-usb2-y += phy-samsung-usb2.o +phy-exynos-usb2-$(CONFIG_PHY_EXYNOS4210_USB2) += phy-exynos4210-usb2.o +phy-exynos-usb2-$(CONFIG_PHY_EXYNOS4X12_USB2) += phy-exynos4x12-usb2.o +phy-exynos-usb2-$(CONFIG_PHY_EXYNOS5250_USB2) += phy-exynos5250-usb2.o obj-$(CONFIG_PHY_XGENE) += phy-xgene.o From 907aa3aa8dbb5437696776d40caeea245c8ba3bd Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sat, 19 Apr 2014 08:51:42 +0530 Subject: [PATCH 314/623] phy: restore OMAP_CONTROL_PHY dependencies When OMAP_CONTROL_USB was renamed to OMAP_CONTROL_PHY (commit 14da699b), its dependencies were lost in the process. Nothing in the commit message indicates that this removal was intentional, so I think it was by accident and the dependencies should be restored. Signed-off-by: Jean Delvare Acked-by: Roger Quadros Cc: Felipe Balbi Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Greg Kroah-Hartman --- drivers/phy/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 3bb05f17b9b4..4906c27fa3bd 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -33,6 +33,7 @@ config PHY_MVEBU_SATA config OMAP_CONTROL_PHY tristate "OMAP CONTROL PHY Driver" + depends on ARCH_OMAP2PLUS || COMPILE_TEST help Enable this to add support for the PHY part present in the control module. This driver has API to power on the USB2 PHY and to write to From 743bb387a1edbf1ebbba6cf77c1af3e488886c39 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sat, 19 Apr 2014 08:51:43 +0530 Subject: [PATCH 315/623] phy: fix kernel oops in phy_lookup() The kernel oopses in phy_lookup() due to 'phy->init_data' being NULL if we register PHYs from a device tree probing driver and then call phy_get() on a device that has no representation in the device tree (e.g. a PCI device). Checking the pointer before dereferening it and skipping an interation if it's NULL prevents this kernel oops. Signed-off-by: Sergei Shtylyov Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Greg Kroah-Hartman --- drivers/phy/phy-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c index 623b71c54b3e..c64a2f3b2d62 100644 --- a/drivers/phy/phy-core.c +++ b/drivers/phy/phy-core.c @@ -64,6 +64,9 @@ static struct phy *phy_lookup(struct device *device, const char *port) class_dev_iter_init(&iter, phy_class, NULL, NULL); while ((dev = class_dev_iter_next(&iter))) { phy = to_phy(dev); + + if (!phy->init_data) + continue; count = phy->init_data->num_consumers; consumers = phy->init_data->consumers; while (count--) { From 2b97789fa289d531e767d994a77e34ec58f328c4 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Sat, 19 Apr 2014 08:51:44 +0530 Subject: [PATCH 316/623] phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY This fixes a regression on Keystone 2 platforms caused by patch 57303488cd37da58263e842de134dc65f7c626d5 "usb: dwc3: adapt dwc3 core to use Generic PHY Framework" which adds optional support of generic phy in DWC3 core. On Keystone 2 platforms the USB is not working now because CONFIG_GENERIC_PHY isn't set and, as result, Generic PHY APIs stubs return -ENOSYS always. The log shows: dwc3 2690000.dwc3: failed to initialize core dwc3: probe of 2690000.dwc3 failed with error -38 Hence, fix it by making NULL a valid phy reference in Generic PHY APIs stubs in the same way as it was done by the patch 04c2facad8fee66c981a51852806d8923336f362 "drivers: phy: Make NULL a valid phy reference". Acked-by: Felipe Balbi Acked-by: Santosh Shilimkar Signed-off-by: Grygorii Strashko Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Greg Kroah-Hartman --- include/linux/phy/phy.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e2f5ca96cddc..2760744cb2a7 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -174,21 +174,29 @@ void devm_of_phy_provider_unregister(struct device *dev, #else static inline int phy_pm_runtime_get(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_pm_runtime_get_sync(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_pm_runtime_put(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_pm_runtime_put_sync(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } @@ -204,21 +212,29 @@ static inline void phy_pm_runtime_forbid(struct phy *phy) static inline int phy_init(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_exit(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_power_on(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } static inline int phy_power_off(struct phy *phy) { + if (!phy) + return 0; return -ENOSYS; } From 129eef2184218f4603f406945552ff4e58b05cf1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:10 +0000 Subject: [PATCH 317/623] can: c_can_pci: Set the type of the IP core All type checks in c_can.c are != BOSCH_D_CAN so nobody noticed so far that the pci code does not update the type information. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can_pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c index bce0be54c2f5..1b7ff400711a 100644 --- a/drivers/net/can/c_can/c_can_pci.c +++ b/drivers/net/can/c_can/c_can_pci.c @@ -132,6 +132,8 @@ static int c_can_pci_probe(struct pci_dev *pdev, goto out_free_c_can; } + priv->type = c_can_pci_data->type; + /* Configure access to registers */ switch (c_can_pci_data->reg_align) { case C_CAN_REG_ALIGN_32: From bed11db3d4095e5f818f5e8bf7f43ef2beb36d4e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:10 +0000 Subject: [PATCH 318/623] can: c_can: Fix startup logic c_can_start() enables interrupts way too early. The first enabling happens when setting the control mode in c_can_chip_config() and then again at the end of the function. But that happens before napi_enable() and that means that an interrupt which comes in will disable interrupts again and call napi_schedule, which ignores the request and the later napi_enable() is not making thinks work either. So the interface is up with all device interrupts disabled. Move the device interrupt after napi_enable() and add it to the other callsites of c_can_start() in c_can_set_mode() and c_can_power_up() Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index a5c8dcfa8357..b1629a47c03b 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -612,30 +612,22 @@ static int c_can_chip_config(struct net_device *dev) struct c_can_priv *priv = netdev_priv(dev); /* enable automatic retransmission */ - priv->write_reg(priv, C_CAN_CTRL_REG, - CONTROL_ENABLE_AR); + priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_ENABLE_AR); if ((priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) && (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)) { /* loopback + silent mode : useful for hot self-test */ - priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_EIE | - CONTROL_SIE | CONTROL_IE | CONTROL_TEST); - priv->write_reg(priv, C_CAN_TEST_REG, - TEST_LBACK | TEST_SILENT); + priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST); + priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK | TEST_SILENT); } else if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK) { /* loopback mode : useful for self-test function */ - priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_EIE | - CONTROL_SIE | CONTROL_IE | CONTROL_TEST); + priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST); priv->write_reg(priv, C_CAN_TEST_REG, TEST_LBACK); } else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) { /* silent mode : bus-monitoring mode */ - priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_EIE | - CONTROL_SIE | CONTROL_IE | CONTROL_TEST); + priv->write_reg(priv, C_CAN_CTRL_REG, CONTROL_TEST); priv->write_reg(priv, C_CAN_TEST_REG, TEST_SILENT); - } else - /* normal mode*/ - priv->write_reg(priv, C_CAN_CTRL_REG, - CONTROL_EIE | CONTROL_SIE | CONTROL_IE); + } /* configure message objects */ c_can_configure_msg_objects(dev); @@ -662,9 +654,6 @@ static int c_can_start(struct net_device *dev) /* reset tx helper pointers */ priv->tx_next = priv->tx_echo = 0; - /* enable status change, error and module interrupts */ - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); - return 0; } @@ -681,6 +670,7 @@ static void c_can_stop(struct net_device *dev) static int c_can_set_mode(struct net_device *dev, enum can_mode mode) { + struct c_can_priv *priv = netdev_priv(dev); int err; switch (mode) { @@ -689,6 +679,8 @@ static int c_can_set_mode(struct net_device *dev, enum can_mode mode) if (err) return err; netif_wake_queue(dev); + /* enable status change, error and module interrupts */ + c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); break; default: return -EOPNOTSUPP; @@ -1184,6 +1176,8 @@ static int c_can_open(struct net_device *dev) can_led_event(dev, CAN_LED_EVENT_OPEN); napi_enable(&priv->napi); + /* enable status change, error and module interrupts */ + c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); netif_start_queue(dev); return 0; @@ -1281,6 +1275,7 @@ int c_can_power_up(struct net_device *dev) u32 val; unsigned long time_out; struct c_can_priv *priv = netdev_priv(dev); + int ret; if (!(dev->flags & IFF_UP)) return 0; @@ -1307,7 +1302,11 @@ int c_can_power_up(struct net_device *dev) if (time_after(jiffies, time_out)) return -ETIMEDOUT; - return c_can_start(dev); + ret = c_can_start(dev); + if (!ret) + c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + + return ret; } EXPORT_SYMBOL_GPL(c_can_power_up); #endif From ef1d2e286a2d8876e03a3f58ea1a1f549727e518 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:11 +0000 Subject: [PATCH 319/623] can: c_can: Make bus off interrupt disable logic work The state change handler is called with device interrupts disabled already. So no point in disabling them again when we enter bus off state. But what's worse is that we reenable the interrupts at the end of NAPI poll unconditionally. So c_can_start() which is called from the restart timer can trigger interrupts which confuse the hell out of the half reinitialized driver/hw. Remove the pointless device interrupt disable in the BUS_OFF handler and prevent reenabling the device interrupts at the end of the poll routine when the current state is BUS_OFF. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index b1629a47c03b..8c725f40bc1d 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -954,11 +954,6 @@ static int c_can_handle_state_change(struct net_device *dev, /* bus-off state */ priv->can.state = CAN_STATE_BUS_OFF; cf->can_id |= CAN_ERR_BUSOFF; - /* - * disable all interrupts in bus-off mode to ensure that - * the CPU is not hogged down - */ - c_can_enable_all_interrupts(priv, DISABLE_ALL_INTERRUPTS); can_bus_off(dev); break; default: @@ -1089,6 +1084,7 @@ static int c_can_poll(struct napi_struct *napi, int quota) netdev_dbg(dev, "entered bus off state\n"); work_done += c_can_handle_state_change(dev, C_CAN_BUS_OFF); + goto end; } /* handle bus recovery events */ @@ -1122,8 +1118,9 @@ static int c_can_poll(struct napi_struct *napi, int quota) end: if (work_done < quota) { napi_complete(napi); - /* enable all IRQs */ - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + /* enable all IRQs if we are not in bus off state */ + if (priv->can.state != CAN_STATE_BUS_OFF) + c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); } return work_done; From 9c64863a49bd23c5a3a983680eb500f7796c81be Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:12 +0000 Subject: [PATCH 320/623] can: c_can: Do not access skb after net_receive_skb() There is no guarantee that the skb is in the same state after calling net_receive_skb(). It might be freed or reused. Not really harmful as its a read access, except you turn on the proper debugging options which catch a use after free. The whole can subsystem is full of this. Copy and paste .... Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 8c725f40bc1d..603876109ba8 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -429,10 +429,10 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, int ctrl) } } - netif_receive_skb(skb); - stats->rx_packets++; stats->rx_bytes += frame->can_dlc; + + netif_receive_skb(skb); return 0; } @@ -960,9 +960,9 @@ static int c_can_handle_state_change(struct net_device *dev, break; } - netif_receive_skb(skb); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_receive_skb(skb); return 1; } @@ -1033,10 +1033,9 @@ static int c_can_handle_bus_err(struct net_device *dev, /* set a `lec` value so that we can check for updates later */ priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); - netif_receive_skb(skb); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; - + netif_receive_skb(skb); return 1; } From f058d548e8071a1d148d6ebd94888d011c3ca71e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:12 +0000 Subject: [PATCH 321/623] can: c_can: Handle state change correctly If the allocation of an error skb fails, the state change handling returns w/o doing any work. That leaves the interface in a wreckaged state as the internal status is wrong. Split the interface handling and the skb handling. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 603876109ba8..246bcf92558c 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -914,6 +914,26 @@ static int c_can_handle_state_change(struct net_device *dev, struct sk_buff *skb; struct can_berr_counter bec; + switch (error_type) { + case C_CAN_ERROR_WARNING: + /* error warning state */ + priv->can.can_stats.error_warning++; + priv->can.state = CAN_STATE_ERROR_WARNING; + break; + case C_CAN_ERROR_PASSIVE: + /* error passive state */ + priv->can.can_stats.error_passive++; + priv->can.state = CAN_STATE_ERROR_PASSIVE; + break; + case C_CAN_BUS_OFF: + /* bus-off state */ + priv->can.state = CAN_STATE_BUS_OFF; + can_bus_off(dev); + break; + default: + break; + } + /* propagate the error condition to the CAN stack */ skb = alloc_can_err_skb(dev, &cf); if (unlikely(!skb)) @@ -927,8 +947,6 @@ static int c_can_handle_state_change(struct net_device *dev, switch (error_type) { case C_CAN_ERROR_WARNING: /* error warning state */ - priv->can.can_stats.error_warning++; - priv->can.state = CAN_STATE_ERROR_WARNING; cf->can_id |= CAN_ERR_CRTL; cf->data[1] = (bec.txerr > bec.rxerr) ? CAN_ERR_CRTL_TX_WARNING : @@ -939,8 +957,6 @@ static int c_can_handle_state_change(struct net_device *dev, break; case C_CAN_ERROR_PASSIVE: /* error passive state */ - priv->can.can_stats.error_passive++; - priv->can.state = CAN_STATE_ERROR_PASSIVE; cf->can_id |= CAN_ERR_CRTL; if (rx_err_passive) cf->data[1] |= CAN_ERR_CRTL_RX_PASSIVE; @@ -952,7 +968,6 @@ static int c_can_handle_state_change(struct net_device *dev, break; case C_CAN_BUS_OFF: /* bus-off state */ - priv->can.state = CAN_STATE_BUS_OFF; cf->can_id |= CAN_ERR_BUSOFF; can_bus_off(dev); break; From 097aec19689d8f2f76fd0c1becacf32801ae94c7 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:13 +0000 Subject: [PATCH 322/623] can: c_can: Fix berr reporting Reading the LEC type with return (mode & ENABLED) && (status & LEC_MASK); is not guaranteed to return (status & LEC_MASK) if the enabled bit in mode is set. It's guaranteed to return 0 or !=0. Remove the inline function and call unconditionally into the berr_handling code and return early when the reporting is disabled. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 246bcf92558c..9ef45b037a0c 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -171,6 +171,7 @@ enum c_can_lec_type { LEC_BIT0_ERROR, LEC_CRC_ERROR, LEC_UNUSED, + LEC_MASK = LEC_UNUSED, }; /* @@ -897,12 +898,6 @@ static int c_can_do_rx_poll(struct net_device *dev, int quota) return pkts; } -static inline int c_can_has_and_handle_berr(struct c_can_priv *priv) -{ - return (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING) && - (priv->current_status & LEC_UNUSED); -} - static int c_can_handle_state_change(struct net_device *dev, enum c_can_bus_error_types error_type) { @@ -998,6 +993,9 @@ static int c_can_handle_bus_err(struct net_device *dev, if (lec_type == LEC_UNUSED || lec_type == LEC_NO_ERROR) return 0; + if (!(priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) + return 0; + /* propagate the error condition to the CAN stack */ skb = alloc_can_err_skb(dev, &cf); if (unlikely(!skb)) @@ -1057,7 +1055,6 @@ static int c_can_handle_bus_err(struct net_device *dev, static int c_can_poll(struct napi_struct *napi, int quota) { u16 irqstatus; - int lec_type = 0; int work_done = 0; struct net_device *dev = napi->dev; struct c_can_priv *priv = netdev_priv(dev); @@ -1116,9 +1113,8 @@ static int c_can_poll(struct napi_struct *napi, int quota) priv->last_status = priv->current_status; /* handle lec errors on the bus */ - lec_type = c_can_has_and_handle_berr(priv); - if (lec_type) - work_done += c_can_handle_bus_err(dev, lec_type); + work_done += c_can_handle_bus_err(dev, + priv->current_status & LEC_MASK); } else if ((irqstatus >= C_CAN_MSG_OBJ_RX_FIRST) && (irqstatus <= C_CAN_MSG_OBJ_RX_LAST)) { /* handle events corresponding to receive message objects */ From 1da394d889b4110bda954813ef32601c06118376 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:13 +0000 Subject: [PATCH 323/623] can: c_can: Always update error stats If the allocation of the error skb fails, we still want to see the error statistics. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 9ef45b037a0c..6170e644426d 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -378,6 +378,9 @@ static int c_can_handle_lost_msg_obj(struct net_device *dev, priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), ctrl); c_can_object_put(dev, iface, objno, IF_COMM_CONTROL); + stats->rx_errors++; + stats->rx_over_errors++; + /* create an error msg */ skb = alloc_can_err_skb(dev, &frame); if (unlikely(!skb)) @@ -385,8 +388,6 @@ static int c_can_handle_lost_msg_obj(struct net_device *dev, frame->can_id |= CAN_ERR_CRTL; frame->data[1] = CAN_ERR_CRTL_RX_OVERFLOW; - stats->rx_errors++; - stats->rx_over_errors++; netif_receive_skb(skb); return 1; @@ -996,6 +997,10 @@ static int c_can_handle_bus_err(struct net_device *dev, if (!(priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) return 0; + /* common for all type of bus errors */ + priv->can.can_stats.bus_error++; + stats->rx_errors++; + /* propagate the error condition to the CAN stack */ skb = alloc_can_err_skb(dev, &cf); if (unlikely(!skb)) @@ -1005,10 +1010,6 @@ static int c_can_handle_bus_err(struct net_device *dev, * check for 'last error code' which tells us the * type of the last error to occur on the CAN bus */ - - /* common for all type of bus errors */ - priv->can.can_stats.bus_error++; - stats->rx_errors++; cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; cf->data[2] |= CAN_ERR_PROT_UNSPEC; From 6b48ff8d934ab5ca6697b0e311e7869ff4a1d3f3 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:14 +0000 Subject: [PATCH 324/623] can: c_can: Simplify buffer reenabling Instead of writing to the message object we can simply clear the NewDat bit with the get method. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 6170e644426d..2aae073a1dc1 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -108,6 +108,7 @@ #define IF_COMM_CONTROL BIT(4) #define IF_COMM_CLR_INT_PND BIT(3) #define IF_COMM_TXRQST BIT(2) +#define IF_COMM_CLR_NEWDAT IF_COMM_TXRQST #define IF_COMM_DATAA BIT(1) #define IF_COMM_DATAB BIT(0) #define IF_COMM_ALL (IF_COMM_MASK | IF_COMM_ARB | \ @@ -120,7 +121,7 @@ IF_COMM_DATAA | IF_COMM_DATAB) /* For the high buffers we clear the interrupt bit and newdat */ -#define IF_COMM_RCV_HIGH (IF_COMM_RCV_LOW | IF_COMM_TXRQST) +#define IF_COMM_RCV_HIGH (IF_COMM_RCV_LOW | IF_COMM_CLR_NEWDAT) /* IFx arbitration */ #define IF_ARB_MSGVAL BIT(15) @@ -353,17 +354,12 @@ static void c_can_write_msg_object(struct net_device *dev, } static inline void c_can_activate_all_lower_rx_msg_obj(struct net_device *dev, - int iface, - int ctrl_mask) + int iface) { int i; - struct c_can_priv *priv = netdev_priv(dev); - for (i = C_CAN_MSG_OBJ_RX_FIRST; i <= C_CAN_MSG_RX_LOW_LAST; i++) { - priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), - ctrl_mask & ~IF_MCONT_NEWDAT); - c_can_object_put(dev, iface, i, IF_COMM_CONTROL); - } + for (i = C_CAN_MSG_OBJ_RX_FIRST; i <= C_CAN_MSG_RX_LOW_LAST; i++) + c_can_object_get(dev, iface, i, IF_COMM_CLR_NEWDAT); } static int c_can_handle_lost_msg_obj(struct net_device *dev, @@ -829,7 +825,7 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, if (obj == C_CAN_MSG_RX_LOW_LAST) /* activate all lower message objects */ - c_can_activate_all_lower_rx_msg_obj(dev, IF_RX, ctrl); + c_can_activate_all_lower_rx_msg_obj(dev, IF_RX); pkts++; quota--; From b9011aae9389c8853c1ccc2236f500a6e648c525 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:15 +0000 Subject: [PATCH 325/623] can: c_can: Avoid status register update for D_CAN On D_CAN the RXOK, TXOK and LEC bits are cleared/set on read of the status register. No need to update them. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 2aae073a1dc1..b381f7bfb895 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -1041,7 +1041,8 @@ static int c_can_handle_bus_err(struct net_device *dev, } /* set a `lec` value so that we can check for updates later */ - priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); + if (priv->type != BOSCH_D_CAN) + priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; @@ -1066,11 +1067,13 @@ static int c_can_poll(struct napi_struct *napi, int quota) C_CAN_STS_REG); /* handle Tx/Rx events */ - if (priv->current_status & STATUS_TXOK) + if (priv->current_status & STATUS_TXOK && + priv->type != BOSCH_D_CAN) priv->write_reg(priv, C_CAN_STS_REG, priv->current_status & ~STATUS_TXOK); - if (priv->current_status & STATUS_RXOK) + if (priv->current_status & STATUS_RXOK && + priv->type != BOSCH_D_CAN) priv->write_reg(priv, C_CAN_STS_REG, priv->current_status & ~STATUS_RXOK); From fa39b54ccf28a0a85256f04881297cd75b8ef204 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:15 +0000 Subject: [PATCH 326/623] can: c_can: Get rid of pointless interrupts The driver handles pointlessly TWO interrupts per packet. The reason is that it enables the status interrupt which fires for each rx and tx packet and it enables the per message object interrupts as well. The status interrupt merily acks or in case of D_CAN ignores the TX/RX state and then the message object interrupt fires. The message objects interrupts are only useful if all message objects have hardware filters activated. But we don't have that and its not simple to implement in that driver without rewriting it completely. So we can ditch the message object interrupts and handle the RX/TX right away from the status interrupt. Instead of TWO we handle ONE. Note: We must keep the TXIE/RXIE bits in the message buffers because the status interrupt alone is not reliable enough in corner cases. If we ever have the need for HW filtering, then this code needs a complete overhaul and we can think about it then. For now we prefer a lower interrupt load. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 126 +++++++++++++--------------------- drivers/net/can/c_can/c_can.h | 3 +- 2 files changed, 50 insertions(+), 79 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index b381f7bfb895..09cb68772737 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -593,7 +593,7 @@ static void c_can_configure_msg_objects(struct net_device *dev) /* setup receive message objects */ for (i = C_CAN_MSG_OBJ_RX_FIRST; i < C_CAN_MSG_OBJ_RX_LAST; i++) c_can_setup_receive_object(dev, IF_RX, i, 0, 0, - (IF_MCONT_RXIE | IF_MCONT_UMASK) & ~IF_MCONT_EOB); + IF_MCONT_RXIE | IF_MCONT_UMASK); c_can_setup_receive_object(dev, IF_RX, C_CAN_MSG_OBJ_RX_LAST, 0, 0, IF_MCONT_EOB | IF_MCONT_RXIE | IF_MCONT_UMASK); @@ -649,8 +649,9 @@ static int c_can_start(struct net_device *dev) priv->can.state = CAN_STATE_ERROR_ACTIVE; - /* reset tx helper pointers */ + /* reset tx helper pointers and the rx mask */ priv->tx_next = priv->tx_echo = 0; + priv->rxmasked = 0; return 0; } @@ -823,9 +824,13 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, /* read the data from the message object */ c_can_read_msg_object(dev, IF_RX, ctrl); - if (obj == C_CAN_MSG_RX_LOW_LAST) + if (obj < C_CAN_MSG_RX_LOW_LAST) + priv->rxmasked |= BIT(obj - 1); + else if (obj == C_CAN_MSG_RX_LOW_LAST) { + priv->rxmasked = 0; /* activate all lower message objects */ c_can_activate_all_lower_rx_msg_obj(dev, IF_RX); + } pkts++; quota--; @@ -870,7 +875,8 @@ static int c_can_do_rx_poll(struct net_device *dev, int quota) while (quota > 0) { if (!pend) { - pend = priv->read_reg(priv, C_CAN_INTPND1_REG); + pend = priv->read_reg(priv, C_CAN_NEWDAT1_REG); + pend &= ~priv->rxmasked; if (!pend) break; /* @@ -1040,10 +1046,6 @@ static int c_can_handle_bus_err(struct net_device *dev, break; } - /* set a `lec` value so that we can check for updates later */ - if (priv->type != BOSCH_D_CAN) - priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); - stats->rx_packets++; stats->rx_bytes += cf->can_dlc; netif_receive_skb(skb); @@ -1052,79 +1054,50 @@ static int c_can_handle_bus_err(struct net_device *dev, static int c_can_poll(struct napi_struct *napi, int quota) { - u16 irqstatus; - int work_done = 0; struct net_device *dev = napi->dev; struct c_can_priv *priv = netdev_priv(dev); + u16 curr, last = priv->last_status; + int work_done = 0; - irqstatus = priv->irqstatus; - if (!irqstatus) - goto end; + priv->last_status = curr = priv->read_reg(priv, C_CAN_STS_REG); + /* Ack status on C_CAN. D_CAN is self clearing */ + if (priv->type != BOSCH_D_CAN) + priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); - /* status events have the highest priority */ - if (irqstatus == STATUS_INTERRUPT) { - priv->current_status = priv->read_reg(priv, - C_CAN_STS_REG); - - /* handle Tx/Rx events */ - if (priv->current_status & STATUS_TXOK && - priv->type != BOSCH_D_CAN) - priv->write_reg(priv, C_CAN_STS_REG, - priv->current_status & ~STATUS_TXOK); - - if (priv->current_status & STATUS_RXOK && - priv->type != BOSCH_D_CAN) - priv->write_reg(priv, C_CAN_STS_REG, - priv->current_status & ~STATUS_RXOK); - - /* handle state changes */ - if ((priv->current_status & STATUS_EWARN) && - (!(priv->last_status & STATUS_EWARN))) { - netdev_dbg(dev, "entered error warning state\n"); - work_done += c_can_handle_state_change(dev, - C_CAN_ERROR_WARNING); - } - if ((priv->current_status & STATUS_EPASS) && - (!(priv->last_status & STATUS_EPASS))) { - netdev_dbg(dev, "entered error passive state\n"); - work_done += c_can_handle_state_change(dev, - C_CAN_ERROR_PASSIVE); - } - if ((priv->current_status & STATUS_BOFF) && - (!(priv->last_status & STATUS_BOFF))) { - netdev_dbg(dev, "entered bus off state\n"); - work_done += c_can_handle_state_change(dev, - C_CAN_BUS_OFF); - goto end; - } - - /* handle bus recovery events */ - if ((!(priv->current_status & STATUS_BOFF)) && - (priv->last_status & STATUS_BOFF)) { - netdev_dbg(dev, "left bus off state\n"); - priv->can.state = CAN_STATE_ERROR_ACTIVE; - } - if ((!(priv->current_status & STATUS_EPASS)) && - (priv->last_status & STATUS_EPASS)) { - netdev_dbg(dev, "left error passive state\n"); - priv->can.state = CAN_STATE_ERROR_ACTIVE; - } - - priv->last_status = priv->current_status; - - /* handle lec errors on the bus */ - work_done += c_can_handle_bus_err(dev, - priv->current_status & LEC_MASK); - } else if ((irqstatus >= C_CAN_MSG_OBJ_RX_FIRST) && - (irqstatus <= C_CAN_MSG_OBJ_RX_LAST)) { - /* handle events corresponding to receive message objects */ - work_done += c_can_do_rx_poll(dev, (quota - work_done)); - } else if ((irqstatus >= C_CAN_MSG_OBJ_TX_FIRST) && - (irqstatus <= C_CAN_MSG_OBJ_TX_LAST)) { - /* handle events corresponding to transmit message objects */ - c_can_do_tx(dev); + /* handle state changes */ + if ((curr & STATUS_EWARN) && (!(last & STATUS_EWARN))) { + netdev_dbg(dev, "entered error warning state\n"); + work_done += c_can_handle_state_change(dev, C_CAN_ERROR_WARNING); } + if ((curr & STATUS_EPASS) && (!(last & STATUS_EPASS))) { + netdev_dbg(dev, "entered error passive state\n"); + work_done += c_can_handle_state_change(dev, C_CAN_ERROR_PASSIVE); + } + + if ((curr & STATUS_BOFF) && (!(last & STATUS_BOFF))) { + netdev_dbg(dev, "entered bus off state\n"); + work_done += c_can_handle_state_change(dev, C_CAN_BUS_OFF); + goto end; + } + + /* handle bus recovery events */ + if ((!(curr & STATUS_BOFF)) && (last & STATUS_BOFF)) { + netdev_dbg(dev, "left bus off state\n"); + priv->can.state = CAN_STATE_ERROR_ACTIVE; + } + if ((!(curr & STATUS_EPASS)) && (last & STATUS_EPASS)) { + netdev_dbg(dev, "left error passive state\n"); + priv->can.state = CAN_STATE_ERROR_ACTIVE; + } + + /* handle lec errors on the bus */ + work_done += c_can_handle_bus_err(dev, curr & LEC_MASK); + + /* Handle Tx/Rx events. We do this unconditionally */ + work_done += c_can_do_rx_poll(dev, (quota - work_done)); + c_can_do_tx(dev); + end: if (work_done < quota) { napi_complete(napi); @@ -1141,8 +1114,7 @@ static irqreturn_t c_can_isr(int irq, void *dev_id) struct net_device *dev = (struct net_device *)dev_id; struct c_can_priv *priv = netdev_priv(dev); - priv->irqstatus = priv->read_reg(priv, C_CAN_INT_REG); - if (!priv->irqstatus) + if (!priv->read_reg(priv, C_CAN_INT_REG)) return IRQ_NONE; /* disable all interrupts and schedule the NAPI */ diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index faa8404162b3..cd91960ce92c 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -185,7 +185,6 @@ struct c_can_priv { struct device *device; spinlock_t xmit_lock; int tx_object; - int current_status; int last_status; u16 (*read_reg) (struct c_can_priv *priv, enum reg index); void (*write_reg) (struct c_can_priv *priv, enum reg index, u16 val); @@ -195,11 +194,11 @@ struct c_can_priv { unsigned int tx_next; unsigned int tx_echo; void *priv; /* for board-specific data */ - u16 irqstatus; enum c_can_dev_id type; u32 __iomem *raminit_ctrlreg; unsigned int instance; void (*raminit) (const struct c_can_priv *priv, bool enable); + u32 rxmasked; u32 dlc[C_CAN_MSG_OBJ_TX_NUM]; }; From 2b9aecdce227e099349b73e3a074936d3c51f2a9 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:16 +0000 Subject: [PATCH 327/623] can: c_can: Disable rx split as workaround The RX buffer split causes packet loss in the hardware: What happens is: RX Packet 1 --> message buffer 1 (newdat bit is not cleared) RX Packet 2 --> message buffer 2 (newdat bit is not cleared) RX Packet 3 --> message buffer 3 (newdat bit is not cleared) RX Packet 4 --> message buffer 4 (newdat bit is not cleared) RX Packet 5 --> message buffer 5 (newdat bit is not cleared) RX Packet 6 --> message buffer 6 (newdat bit is not cleared) RX Packet 7 --> message buffer 7 (newdat bit is not cleared) RX Packet 8 --> message buffer 8 (newdat bit is not cleared) Clear newdat bit in message buffer 1 Clear newdat bit in message buffer 2 Clear newdat bit in message buffer 3 Clear newdat bit in message buffer 4 Clear newdat bit in message buffer 5 Clear newdat bit in message buffer 6 Clear newdat bit in message buffer 7 Clear newdat bit in message buffer 8 Now if during that clearing of newdat bits, a new message comes in, the HW gets confused and drops it. It does not matter how many of them you clear. I put a delay between clear of buffer 1 and buffer 2 which was long enough that the message should have been queued either in buffer 1 or buffer 9. But it did not show up anywhere. The next message ended up in buffer 1. So the hardware lost a packet of course without telling it via one of the error handlers. That does not happen on all clear newdat bit events. I see one of 10k packets dropped in the scenario which allows us to reproduce. But the trace looks always the same. Not splitting the RX Buffer avoids the packet loss but can cause reordering. It's hard to trigger, but it CAN happen. With that mode we use the HW as it was probably designed for. We read from the buffer 1 upwards and clear the buffer as we get the message. That's how all microcontrollers use it. So I assume that the way we handle the buffers was never really tested. According to the public documentation it should just work :) Let the user decide which evil is the lesser one. [ Oliver Hartkopp: Provided a sane config option and help text and made me switch to favour potential and unlikely reordering over packet loss ] Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/Kconfig | 7 ++++ drivers/net/can/c_can/c_can.c | 62 +++++++++++++++++++++++++++-------- 2 files changed, 55 insertions(+), 14 deletions(-) diff --git a/drivers/net/can/c_can/Kconfig b/drivers/net/can/c_can/Kconfig index 61ffc12d8fd8..8ab7103d4f44 100644 --- a/drivers/net/can/c_can/Kconfig +++ b/drivers/net/can/c_can/Kconfig @@ -14,6 +14,13 @@ config CAN_C_CAN_PLATFORM SPEAr1310 and SPEAr320 evaluation boards & TI (www.ti.com) boards like am335x, dm814x, dm813x and dm811x. +config CAN_C_CAN_STRICT_FRAME_ORDERING + bool "Force a strict RX CAN frame order (may cause frame loss)" + ---help--- + The RX split buffer prevents packet reordering but can cause packet + loss. Only enable this option when you accept to lose CAN frames + in favour of getting the received CAN frames in the correct order. + config CAN_C_CAN_PCI tristate "Generic PCI Bus based C_CAN/D_CAN driver" depends on PCI diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 09cb68772737..c1a8684ed1c8 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -791,18 +791,39 @@ static u32 c_can_adjust_pending(u32 pend) return pend & ~((1 << lasts) - 1); } +static inline void c_can_rx_object_get(struct net_device *dev, u32 obj) +{ +#ifdef CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING + if (obj < C_CAN_MSG_RX_LOW_LAST) + c_can_object_get(dev, IF_RX, obj, IF_COMM_RCV_LOW); + else +#endif + c_can_object_get(dev, IF_RX, obj, IF_COMM_RCV_HIGH); +} + +static inline void c_can_rx_finalize(struct net_device *dev, + struct c_can_priv *priv, u32 obj) +{ +#ifdef CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING + if (obj < C_CAN_MSG_RX_LOW_LAST) + priv->rxmasked |= BIT(obj - 1); + else if (obj == C_CAN_MSG_RX_LOW_LAST) { + priv->rxmasked = 0; + /* activate all lower message objects */ + c_can_activate_all_lower_rx_msg_obj(dev, IF_RX); + } +#endif +} + static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, u32 pend, int quota) { - u32 pkts = 0, ctrl, obj, mcmd; + u32 pkts = 0, ctrl, obj; while ((obj = ffs(pend)) && quota > 0) { pend &= ~BIT(obj - 1); - mcmd = obj < C_CAN_MSG_RX_LOW_LAST ? - IF_COMM_RCV_LOW : IF_COMM_RCV_HIGH; - - c_can_object_get(dev, IF_RX, obj, mcmd); + c_can_rx_object_get(dev, obj); ctrl = priv->read_reg(priv, C_CAN_IFACE(MSGCTRL_REG, IF_RX)); if (ctrl & IF_MCONT_MSGLST) { @@ -824,13 +845,7 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, /* read the data from the message object */ c_can_read_msg_object(dev, IF_RX, ctrl); - if (obj < C_CAN_MSG_RX_LOW_LAST) - priv->rxmasked |= BIT(obj - 1); - else if (obj == C_CAN_MSG_RX_LOW_LAST) { - priv->rxmasked = 0; - /* activate all lower message objects */ - c_can_activate_all_lower_rx_msg_obj(dev, IF_RX); - } + c_can_rx_finalize(dev, priv, obj); pkts++; quota--; @@ -839,6 +854,16 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, return pkts; } +static inline u32 c_can_get_pending(struct c_can_priv *priv) +{ + u32 pend = priv->read_reg(priv, C_CAN_NEWDAT1_REG); + +#ifdef CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING + pend &= ~priv->rxmasked; +#endif + return pend; +} + /* * theory of operation: * @@ -848,6 +873,8 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, * has arrived. To work-around this issue, we keep two groups of message * objects whose partitioning is defined by C_CAN_MSG_OBJ_RX_SPLIT. * + * If CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING = y + * * To ensure in-order frame reception we use the following * approach while re-activating a message object to receive further * frames: @@ -860,6 +887,14 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, * - if the current message object number is greater than * C_CAN_MSG_RX_LOW_LAST then clear the NEWDAT bit of * only this message object. + * + * This can cause packet loss! + * + * If CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING = n + * + * We clear the newdat bit right away. + * + * This can result in packet reordering when the readout is slow. */ static int c_can_do_rx_poll(struct net_device *dev, int quota) { @@ -875,8 +910,7 @@ static int c_can_do_rx_poll(struct net_device *dev, int quota) while (quota > 0) { if (!pend) { - pend = priv->read_reg(priv, C_CAN_NEWDAT1_REG); - pend &= ~priv->rxmasked; + pend = c_can_get_pending(priv); if (!pend) break; /* From d61d09de023320b95a536eb4d31941e67002a93c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:17 +0000 Subject: [PATCH 328/623] can: c_can: Work around C_CAN RX wreckage Alexander reported that the new optimized handling of the RX fifo causes random packet loss on Intel PCH C_CAN hardware. After a few fruitless debugging sessions I got hold of a PCH (eg20t) afflicted system. That machine does not have the CAN interface wired up, but it was possible to reproduce the issue with the HW loopback mode. As Alexander observed correctly, clearing the NewDat flag along with reading out the message buffer causes that issue on C_CAN, while D_CAN handles that correctly. Instead of restoring the original message buffer handling horror the following workaround solves the issue: transfer buffer to IF without clearing the NewDat handle the message clear NewDat bit That's similar to the original code but conditional for C_CAN. I really wonder why all user manuals (C_CAN, Intel PCH and some more) recommend to clear the NewDat bit right away. The knows it all Oracle operated by Gurgle does not unearth any useful information either. I simply cannot believe that we are the first to uncover that HW issue. Reported-and-tested-by: Alexander Stein Signed-off-by: Thomas Gleixner Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 13 ++++++++++--- drivers/net/can/c_can/c_can.h | 1 + 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index c1a8684ed1c8..5d43c5a0e2d9 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -647,6 +647,10 @@ static int c_can_start(struct net_device *dev) if (err) return err; + /* Setup the command for new messages */ + priv->comm_rcv_high = priv->type != BOSCH_D_CAN ? + IF_COMM_RCV_LOW : IF_COMM_RCV_HIGH; + priv->can.state = CAN_STATE_ERROR_ACTIVE; /* reset tx helper pointers and the rx mask */ @@ -791,14 +795,15 @@ static u32 c_can_adjust_pending(u32 pend) return pend & ~((1 << lasts) - 1); } -static inline void c_can_rx_object_get(struct net_device *dev, u32 obj) +static inline void c_can_rx_object_get(struct net_device *dev, + struct c_can_priv *priv, u32 obj) { #ifdef CONFIG_CAN_C_CAN_STRICT_FRAME_ORDERING if (obj < C_CAN_MSG_RX_LOW_LAST) c_can_object_get(dev, IF_RX, obj, IF_COMM_RCV_LOW); else #endif - c_can_object_get(dev, IF_RX, obj, IF_COMM_RCV_HIGH); + c_can_object_get(dev, IF_RX, obj, priv->comm_rcv_high); } static inline void c_can_rx_finalize(struct net_device *dev, @@ -813,6 +818,8 @@ static inline void c_can_rx_finalize(struct net_device *dev, c_can_activate_all_lower_rx_msg_obj(dev, IF_RX); } #endif + if (priv->type != BOSCH_D_CAN) + c_can_object_get(dev, IF_RX, obj, IF_COMM_CLR_NEWDAT); } static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, @@ -823,7 +830,7 @@ static int c_can_read_objects(struct net_device *dev, struct c_can_priv *priv, while ((obj = ffs(pend)) && quota > 0) { pend &= ~BIT(obj - 1); - c_can_rx_object_get(dev, obj); + c_can_rx_object_get(dev, priv, obj); ctrl = priv->read_reg(priv, C_CAN_IFACE(MSGCTRL_REG, IF_RX)); if (ctrl & IF_MCONT_MSGLST) { diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index cd91960ce92c..792944c74b94 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -198,6 +198,7 @@ struct c_can_priv { u32 __iomem *raminit_ctrlreg; unsigned int instance; void (*raminit) (const struct c_can_priv *priv, bool enable); + u32 comm_rcv_high; u32 rxmasked; u32 dlc[C_CAN_MSG_OBJ_TX_NUM]; }; From 2d5f4f85695623fab5fac7db19fd0290ef54eca8 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:17 +0000 Subject: [PATCH 329/623] can: c_can: Cleanup irq enable/disable Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 37 ++++++++++++----------------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 5d43c5a0e2d9..562faef29896 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -60,6 +60,8 @@ #define CONTROL_IE BIT(1) #define CONTROL_INIT BIT(0) +#define CONTROL_IRQMSK (CONTROL_EIE | CONTROL_IE | CONTROL_SIE) + /* test register */ #define TEST_RX BIT(7) #define TEST_TX1 BIT(6) @@ -146,13 +148,6 @@ #define IF_RX 0 #define IF_TX 1 -/* status interrupt */ -#define STATUS_INTERRUPT 0x8000 - -/* global interrupt masks */ -#define ENABLE_ALL_INTERRUPTS 1 -#define DISABLE_ALL_INTERRUPTS 0 - /* minimum timeout for checking BUSY status */ #define MIN_TIMEOUT_VALUE 6 @@ -246,18 +241,14 @@ static u32 c_can_read_reg32(struct c_can_priv *priv, enum reg index) return val; } -static void c_can_enable_all_interrupts(struct c_can_priv *priv, - int enable) +static void c_can_irq_control(struct c_can_priv *priv, bool enable) { - unsigned int cntrl_save = priv->read_reg(priv, - C_CAN_CTRL_REG); + u32 ctrl = priv->read_reg(priv, C_CAN_CTRL_REG) & ~CONTROL_IRQMSK; if (enable) - cntrl_save |= (CONTROL_SIE | CONTROL_EIE | CONTROL_IE); - else - cntrl_save &= ~(CONTROL_EIE | CONTROL_IE | CONTROL_SIE); + ctrl |= CONTROL_IRQMSK; - priv->write_reg(priv, C_CAN_CTRL_REG, cntrl_save); + priv->write_reg(priv, C_CAN_CTRL_REG, ctrl); } static inline int c_can_msg_obj_is_busy(struct c_can_priv *priv, int iface) @@ -664,10 +655,7 @@ static void c_can_stop(struct net_device *dev) { struct c_can_priv *priv = netdev_priv(dev); - /* disable all interrupts */ - c_can_enable_all_interrupts(priv, DISABLE_ALL_INTERRUPTS); - - /* set the state as STOPPED */ + c_can_irq_control(priv, false); priv->can.state = CAN_STATE_STOPPED; } @@ -682,8 +670,7 @@ static int c_can_set_mode(struct net_device *dev, enum can_mode mode) if (err) return err; netif_wake_queue(dev); - /* enable status change, error and module interrupts */ - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + c_can_irq_control(priv, true); break; default: return -EOPNOTSUPP; @@ -1144,7 +1131,7 @@ end: napi_complete(napi); /* enable all IRQs if we are not in bus off state */ if (priv->can.state != CAN_STATE_BUS_OFF) - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + c_can_irq_control(priv, true); } return work_done; @@ -1159,7 +1146,7 @@ static irqreturn_t c_can_isr(int irq, void *dev_id) return IRQ_NONE; /* disable all interrupts and schedule the NAPI */ - c_can_enable_all_interrupts(priv, DISABLE_ALL_INTERRUPTS); + c_can_irq_control(priv, false); napi_schedule(&priv->napi); return IRQ_HANDLED; @@ -1197,7 +1184,7 @@ static int c_can_open(struct net_device *dev) napi_enable(&priv->napi); /* enable status change, error and module interrupts */ - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + c_can_irq_control(priv, true); netif_start_queue(dev); return 0; @@ -1324,7 +1311,7 @@ int c_can_power_up(struct net_device *dev) ret = c_can_start(dev); if (!ret) - c_can_enable_all_interrupts(priv, ENABLE_ALL_INTERRUPTS); + c_can_irq_control(priv, true); return ret; } From 4fb6dccd13b27651998f773755e2a1db461c62f1 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:18 +0000 Subject: [PATCH 330/623] can: c_can: Cleanup c_can_read_msg_object() Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 32 +++++++++++++++----------------- 1 file changed, 15 insertions(+), 17 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 562faef29896..d0daef8d67e1 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -380,15 +380,13 @@ static int c_can_handle_lost_msg_obj(struct net_device *dev, return 1; } -static int c_can_read_msg_object(struct net_device *dev, int iface, int ctrl) +static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl) { - u16 flags, data; - int i; - unsigned int val; - struct c_can_priv *priv = netdev_priv(dev); struct net_device_stats *stats = &dev->stats; - struct sk_buff *skb; + struct c_can_priv *priv = netdev_priv(dev); struct can_frame *frame; + struct sk_buff *skb; + u32 arb, data; skb = alloc_can_skb(dev, &frame); if (!skb) { @@ -398,21 +396,21 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, int ctrl) frame->can_dlc = get_can_dlc(ctrl & 0x0F); - flags = priv->read_reg(priv, C_CAN_IFACE(ARB2_REG, iface)); - val = priv->read_reg(priv, C_CAN_IFACE(ARB1_REG, iface)) | - (flags << 16); + arb = priv->read_reg(priv, C_CAN_IFACE(ARB1_REG, iface)); + arb |= priv->read_reg(priv, C_CAN_IFACE(ARB2_REG, iface)) << 16; - if (flags & IF_ARB_MSGXTD) - frame->can_id = (val & CAN_EFF_MASK) | CAN_EFF_FLAG; + if (arb & (IF_ARB_MSGXTD << 16)) + frame->can_id = (arb & CAN_EFF_MASK) | CAN_EFF_FLAG; else - frame->can_id = (val >> 18) & CAN_SFF_MASK; + frame->can_id = (arb >> 18) & CAN_SFF_MASK; - if (flags & IF_ARB_TRANSMIT) + if (arb & (IF_ARB_TRANSMIT << 16)) { frame->can_id |= CAN_RTR_FLAG; - else { - for (i = 0; i < frame->can_dlc; i += 2) { - data = priv->read_reg(priv, - C_CAN_IFACE(DATA1_REG, iface) + i / 2); + } else { + int i, dreg = C_CAN_IFACE(DATA1_REG, iface); + + for (i = 0; i < frame->can_dlc; i += 2, dreg ++) { + data = priv->read_reg(priv, dreg); frame->data[i] = data; frame->data[i + 1] = data >> 8; } From 8ff2de0fb41560cfdf072eb41b5a5b4799d126ea Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:18 +0000 Subject: [PATCH 331/623] can: c_can: Cleanup setup of receive buffers Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 38 ++++++++++++++++------------------- 1 file changed, 17 insertions(+), 21 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index d0daef8d67e1..e4eaa841a826 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -125,6 +125,10 @@ /* For the high buffers we clear the interrupt bit and newdat */ #define IF_COMM_RCV_HIGH (IF_COMM_RCV_LOW | IF_COMM_CLR_NEWDAT) + +/* Receive setup of message objects */ +#define IF_COMM_RCV_SETUP (IF_COMM_MASK | IF_COMM_ARB | IF_COMM_CONTROL) + /* IFx arbitration */ #define IF_ARB_MSGVAL BIT(15) #define IF_ARB_MSGXTD BIT(14) @@ -142,6 +146,9 @@ #define IF_MCONT_EOB BIT(7) #define IF_MCONT_DLC_MASK 0xf +#define IF_MCONT_RCV (IF_MCONT_RXIE | IF_MCONT_UMASK) +#define IF_MCONT_RCV_EOB (IF_MCONT_RCV | IF_MCONT_EOB) + /* * Use IF1 for RX and IF2 for TX */ @@ -424,30 +431,20 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl) } static void c_can_setup_receive_object(struct net_device *dev, int iface, - int objno, unsigned int mask, - unsigned int id, unsigned int mcont) + u32 obj, u32 mask, u32 id, u32 mcont) { struct c_can_priv *priv = netdev_priv(dev); - priv->write_reg(priv, C_CAN_IFACE(MASK1_REG, iface), - IFX_WRITE_LOW_16BIT(mask)); + mask |= BIT(29); + priv->write_reg(priv, C_CAN_IFACE(MASK1_REG, iface), mask); + priv->write_reg(priv, C_CAN_IFACE(MASK2_REG, iface), mask >> 16); - /* According to C_CAN documentation, the reserved bit - * in IFx_MASK2 register is fixed 1 - */ - priv->write_reg(priv, C_CAN_IFACE(MASK2_REG, iface), - IFX_WRITE_HIGH_16BIT(mask) | BIT(13)); - - priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), - IFX_WRITE_LOW_16BIT(id)); - priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), - (IF_ARB_MSGVAL | IFX_WRITE_HIGH_16BIT(id))); + id |= IF_ARB_MSGVAL << 16; + priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), id); + priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), id >> 16); priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), mcont); - c_can_object_put(dev, iface, objno, IF_COMM_ALL & ~IF_COMM_TXRQST); - - netdev_dbg(dev, "obj no:%d, msgval:0x%08x\n", objno, - c_can_read_reg32(priv, C_CAN_MSGVAL1_REG)); + c_can_object_put(dev, iface, obj, IF_COMM_RCV_SETUP); } static void c_can_inval_msg_object(struct net_device *dev, int iface, int objno) @@ -581,11 +578,10 @@ static void c_can_configure_msg_objects(struct net_device *dev) /* setup receive message objects */ for (i = C_CAN_MSG_OBJ_RX_FIRST; i < C_CAN_MSG_OBJ_RX_LAST; i++) - c_can_setup_receive_object(dev, IF_RX, i, 0, 0, - IF_MCONT_RXIE | IF_MCONT_UMASK); + c_can_setup_receive_object(dev, IF_RX, i, 0, 0, IF_MCONT_RCV); c_can_setup_receive_object(dev, IF_RX, C_CAN_MSG_OBJ_RX_LAST, 0, 0, - IF_MCONT_EOB | IF_MCONT_RXIE | IF_MCONT_UMASK); + IF_MCONT_RCV_EOB); } /* From b07faaaf1f60c2b76604917fc5a9937974d78e92 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:19 +0000 Subject: [PATCH 332/623] can: c_can: Cleanup c_can_inval_msg_object() Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index e4eaa841a826..bf3aed43cf2c 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -129,6 +129,9 @@ /* Receive setup of message objects */ #define IF_COMM_RCV_SETUP (IF_COMM_MASK | IF_COMM_ARB | IF_COMM_CONTROL) +/* Invalidation of message objects */ +#define IF_COMM_INVAL (IF_COMM_ARB | IF_COMM_CONTROL) + /* IFx arbitration */ #define IF_ARB_MSGVAL BIT(15) #define IF_ARB_MSGXTD BIT(14) @@ -447,7 +450,7 @@ static void c_can_setup_receive_object(struct net_device *dev, int iface, c_can_object_put(dev, iface, obj, IF_COMM_RCV_SETUP); } -static void c_can_inval_msg_object(struct net_device *dev, int iface, int objno) +static void c_can_inval_msg_object(struct net_device *dev, int iface, int obj) { struct c_can_priv *priv = netdev_priv(dev); @@ -455,10 +458,7 @@ static void c_can_inval_msg_object(struct net_device *dev, int iface, int objno) priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), 0); priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), 0); - c_can_object_put(dev, iface, objno, IF_COMM_ARB | IF_COMM_CONTROL); - - netdev_dbg(dev, "obj no:%d, msgval:0x%08x\n", objno, - c_can_read_reg32(priv, C_CAN_MSGVAL1_REG)); + c_can_object_put(dev, iface, obj, IF_COMM_INVAL); } static inline int c_can_is_next_tx_obj_busy(struct c_can_priv *priv, int objno) From 7af28630b87d0b2eefeee8547ad52df7e0e1b1c4 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:20 +0000 Subject: [PATCH 333/623] can: c_can: Cleanup c_can_msg_obj_put/get() Sigh! Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 60 ++++++++++------------------------- 1 file changed, 16 insertions(+), 44 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index bf3aed43cf2c..c654efbcc527 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -261,61 +261,33 @@ static void c_can_irq_control(struct c_can_priv *priv, bool enable) priv->write_reg(priv, C_CAN_CTRL_REG, ctrl); } -static inline int c_can_msg_obj_is_busy(struct c_can_priv *priv, int iface) +static void c_can_obj_update(struct net_device *dev, int iface, u32 cmd, u32 obj) { - int count = MIN_TIMEOUT_VALUE; + struct c_can_priv *priv = netdev_priv(dev); + int cnt, reg = C_CAN_IFACE(COMREQ_REG, iface); - while (count && priv->read_reg(priv, - C_CAN_IFACE(COMREQ_REG, iface)) & - IF_COMR_BUSY) { - count--; + priv->write_reg(priv, reg + 1, cmd); + priv->write_reg(priv, reg, obj); + + for (cnt = MIN_TIMEOUT_VALUE; cnt; cnt--) { + if (!(priv->read_reg(priv, reg) & IF_COMR_BUSY)) + return; udelay(1); } + netdev_err(dev, "Updating object timed out\n"); - if (!count) - return 1; - - return 0; } -static inline void c_can_object_get(struct net_device *dev, - int iface, int objno, int mask) +static inline void c_can_object_get(struct net_device *dev, int iface, + u32 obj, u32 cmd) { - struct c_can_priv *priv = netdev_priv(dev); - - /* - * As per specs, after writting the message object number in the - * IF command request register the transfer b/w interface - * register and message RAM must be complete in 6 CAN-CLK - * period. - */ - priv->write_reg(priv, C_CAN_IFACE(COMMSK_REG, iface), - IFX_WRITE_LOW_16BIT(mask)); - priv->write_reg(priv, C_CAN_IFACE(COMREQ_REG, iface), - IFX_WRITE_LOW_16BIT(objno)); - - if (c_can_msg_obj_is_busy(priv, iface)) - netdev_err(dev, "timed out in object get\n"); + c_can_obj_update(dev, iface, cmd, obj); } -static inline void c_can_object_put(struct net_device *dev, - int iface, int objno, int mask) +static inline void c_can_object_put(struct net_device *dev, int iface, + u32 obj, u32 cmd) { - struct c_can_priv *priv = netdev_priv(dev); - - /* - * As per specs, after writting the message object number in the - * IF command request register the transfer b/w interface - * register and message RAM must be complete in 6 CAN-CLK - * period. - */ - priv->write_reg(priv, C_CAN_IFACE(COMMSK_REG, iface), - (IF_COMM_WR | IFX_WRITE_LOW_16BIT(mask))); - priv->write_reg(priv, C_CAN_IFACE(COMREQ_REG, iface), - IFX_WRITE_LOW_16BIT(objno)); - - if (c_can_msg_obj_is_busy(priv, iface)) - netdev_err(dev, "timed out in object put\n"); + c_can_obj_update(dev, iface, cmd | IF_COMM_WR, obj); } static void c_can_write_msg_object(struct net_device *dev, From 23ef0a895dd3f115909ca70958aeb3d04f374b0d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:21 +0000 Subject: [PATCH 334/623] can: c_can: Cleanup c_can_write_msg_object() Remove the MASK from the TX transfer side. Make the code readable and get rid of the annoying IFX_WRITE_XXX_16BIT macros which are just obfuscating the code. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 49 +++++++++++++++++------------------ drivers/net/can/c_can/c_can.h | 8 ------ 2 files changed, 24 insertions(+), 33 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index c654efbcc527..7c60e6affe7a 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -113,9 +113,11 @@ #define IF_COMM_CLR_NEWDAT IF_COMM_TXRQST #define IF_COMM_DATAA BIT(1) #define IF_COMM_DATAB BIT(0) -#define IF_COMM_ALL (IF_COMM_MASK | IF_COMM_ARB | \ - IF_COMM_CONTROL | IF_COMM_TXRQST | \ - IF_COMM_DATAA | IF_COMM_DATAB) + +/* TX buffer setup */ +#define IF_COMM_TX (IF_COMM_ARB | IF_COMM_CONTROL | \ + IF_COMM_TXRQST | \ + IF_COMM_DATAA | IF_COMM_DATAB) /* For the low buffers we clear the interrupt bit, but keep newdat */ #define IF_COMM_RCV_LOW (IF_COMM_MASK | IF_COMM_ARB | \ @@ -152,6 +154,8 @@ #define IF_MCONT_RCV (IF_MCONT_RXIE | IF_MCONT_UMASK) #define IF_MCONT_RCV_EOB (IF_MCONT_RCV | IF_MCONT_EOB) +#define IF_MCONT_TX (IF_MCONT_TXIE | IF_MCONT_EOB) + /* * Use IF1 for RX and IF2 for TX */ @@ -290,40 +294,35 @@ static inline void c_can_object_put(struct net_device *dev, int iface, c_can_obj_update(dev, iface, cmd | IF_COMM_WR, obj); } -static void c_can_write_msg_object(struct net_device *dev, - int iface, struct can_frame *frame, int objno) +static void c_can_write_msg_object(struct net_device *dev, int iface, + struct can_frame *frame, int obj) { - int i; - u16 flags = 0; - unsigned int id; struct c_can_priv *priv = netdev_priv(dev); - - if (!(frame->can_id & CAN_RTR_FLAG)) - flags |= IF_ARB_TRANSMIT; + u16 ctrl = IF_MCONT_TX | frame->can_dlc; + u32 arb = IF_ARB_MSGVAL << 16; + int i; if (frame->can_id & CAN_EFF_FLAG) { - id = frame->can_id & CAN_EFF_MASK; - flags |= IF_ARB_MSGXTD; - } else - id = ((frame->can_id & CAN_SFF_MASK) << 18); + arb |= frame->can_id & CAN_EFF_MASK; + arb |= IF_ARB_MSGXTD << 16; + } else { + arb |= (frame->can_id & CAN_SFF_MASK) << 18; + } - flags |= IF_ARB_MSGVAL; + if (!(frame->can_id & CAN_RTR_FLAG)) + arb |= IF_ARB_TRANSMIT << 16; - priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), - IFX_WRITE_LOW_16BIT(id)); - priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), flags | - IFX_WRITE_HIGH_16BIT(id)); + priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), arb); + priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), arb >> 16); + + priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), ctrl); for (i = 0; i < frame->can_dlc; i += 2) { priv->write_reg(priv, C_CAN_IFACE(DATA1_REG, iface) + i / 2, frame->data[i] | (frame->data[i + 1] << 8)); } - /* enable interrupt for this message object */ - priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), - IF_MCONT_TXIE | IF_MCONT_TXRQST | IF_MCONT_EOB | - frame->can_dlc); - c_can_object_put(dev, iface, objno, IF_COMM_ALL); + c_can_object_put(dev, iface, obj, IF_COMM_TX); } static inline void c_can_activate_all_lower_rx_msg_obj(struct net_device *dev, diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index 792944c74b94..d9f59cc4fcb5 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -22,14 +22,6 @@ #ifndef C_CAN_H #define C_CAN_H -/* - * IFx register masks: - * allow easy operation on 16-bit registers when the - * argument is 32-bit instead - */ -#define IFX_WRITE_LOW_16BIT(x) ((x) & 0xFFFF) -#define IFX_WRITE_HIGH_16BIT(x) (((x) & 0xFFFF0000) >> 16) - /* message object split */ #define C_CAN_NO_OF_OBJECTS 32 #define C_CAN_MSG_OBJ_RX_NUM 16 From d48071be6cb94912cf3c3ac0b4d520438fab4778 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:21 +0000 Subject: [PATCH 335/623] can: c_can: Use proper u32 variables in c_can_write_msg_object() Instead of obfuscating the code by artificial 16 bit splits use the proper 32 bit assignments and split the result when writing to the interface. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 7c60e6affe7a..61fde414bb1f 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -135,9 +135,9 @@ #define IF_COMM_INVAL (IF_COMM_ARB | IF_COMM_CONTROL) /* IFx arbitration */ -#define IF_ARB_MSGVAL BIT(15) -#define IF_ARB_MSGXTD BIT(14) -#define IF_ARB_TRANSMIT BIT(13) +#define IF_ARB_MSGVAL BIT(31) +#define IF_ARB_MSGXTD BIT(30) +#define IF_ARB_TRANSMIT BIT(29) /* IFx message control */ #define IF_MCONT_NEWDAT BIT(15) @@ -299,18 +299,18 @@ static void c_can_write_msg_object(struct net_device *dev, int iface, { struct c_can_priv *priv = netdev_priv(dev); u16 ctrl = IF_MCONT_TX | frame->can_dlc; - u32 arb = IF_ARB_MSGVAL << 16; + u32 arb = IF_ARB_MSGVAL; int i; if (frame->can_id & CAN_EFF_FLAG) { arb |= frame->can_id & CAN_EFF_MASK; - arb |= IF_ARB_MSGXTD << 16; + arb |= IF_ARB_MSGXTD; } else { arb |= (frame->can_id & CAN_SFF_MASK) << 18; } if (!(frame->can_id & CAN_RTR_FLAG)) - arb |= IF_ARB_TRANSMIT << 16; + arb |= IF_ARB_TRANSMIT; priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), arb); priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), arb >> 16); @@ -380,12 +380,12 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl) arb = priv->read_reg(priv, C_CAN_IFACE(ARB1_REG, iface)); arb |= priv->read_reg(priv, C_CAN_IFACE(ARB2_REG, iface)) << 16; - if (arb & (IF_ARB_MSGXTD << 16)) + if (arb & IF_ARB_MSGXTD) frame->can_id = (arb & CAN_EFF_MASK) | CAN_EFF_FLAG; else frame->can_id = (arb >> 18) & CAN_SFF_MASK; - if (arb & (IF_ARB_TRANSMIT << 16)) { + if (arb & IF_ARB_TRANSMIT) { frame->can_id |= CAN_RTR_FLAG; } else { int i, dreg = C_CAN_IFACE(DATA1_REG, iface); @@ -413,7 +413,7 @@ static void c_can_setup_receive_object(struct net_device *dev, int iface, priv->write_reg(priv, C_CAN_IFACE(MASK1_REG, iface), mask); priv->write_reg(priv, C_CAN_IFACE(MASK2_REG, iface), mask >> 16); - id |= IF_ARB_MSGVAL << 16; + id |= IF_ARB_MSGVAL; priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), id); priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), id >> 16); From 35bdafb576c5c0a06815e7a681571c3ab950ff7e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:22 +0000 Subject: [PATCH 336/623] can: c_can: Remove tx locking Mark suggested to use one IF for the softirq and the other for the xmit function to avoid the xmit lock. That requires to write the frame into the interface first, then handle the echo skb and store the dlc before committing the TX request to the message ram. We use an atomic to handle the active buffers instead of reading the MSGVAL register as thats way faster especially on PCH/x86. Suggested-by: Mark Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 127 +++++++++++----------------------- drivers/net/can/c_can/c_can.h | 8 +-- 2 files changed, 43 insertions(+), 92 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 61fde414bb1f..99d36bf1ba21 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -237,24 +237,6 @@ static inline void c_can_reset_ram(const struct c_can_priv *priv, bool enable) priv->raminit(priv, enable); } -static inline int get_tx_next_msg_obj(const struct c_can_priv *priv) -{ - return (priv->tx_next & C_CAN_NEXT_MSG_OBJ_MASK) + - C_CAN_MSG_OBJ_TX_FIRST; -} - -static inline int get_tx_echo_msg_obj(int txecho) -{ - return (txecho & C_CAN_NEXT_MSG_OBJ_MASK) + C_CAN_MSG_OBJ_TX_FIRST; -} - -static u32 c_can_read_reg32(struct c_can_priv *priv, enum reg index) -{ - u32 val = priv->read_reg(priv, index); - val |= ((u32) priv->read_reg(priv, index + 1)) << 16; - return val; -} - static void c_can_irq_control(struct c_can_priv *priv, bool enable) { u32 ctrl = priv->read_reg(priv, C_CAN_CTRL_REG) & ~CONTROL_IRQMSK; @@ -294,8 +276,8 @@ static inline void c_can_object_put(struct net_device *dev, int iface, c_can_obj_update(dev, iface, cmd | IF_COMM_WR, obj); } -static void c_can_write_msg_object(struct net_device *dev, int iface, - struct can_frame *frame, int obj) +static void c_can_setup_tx_object(struct net_device *dev, int iface, + struct can_frame *frame, int obj) { struct c_can_priv *priv = netdev_priv(dev); u16 ctrl = IF_MCONT_TX | frame->can_dlc; @@ -321,8 +303,6 @@ static void c_can_write_msg_object(struct net_device *dev, int iface, priv->write_reg(priv, C_CAN_IFACE(DATA1_REG, iface) + i / 2, frame->data[i] | (frame->data[i + 1] << 8)); } - - c_can_object_put(dev, iface, obj, IF_COMM_TX); } static inline void c_can_activate_all_lower_rx_msg_obj(struct net_device *dev, @@ -432,47 +412,38 @@ static void c_can_inval_msg_object(struct net_device *dev, int iface, int obj) c_can_object_put(dev, iface, obj, IF_COMM_INVAL); } -static inline int c_can_is_next_tx_obj_busy(struct c_can_priv *priv, int objno) -{ - int val = c_can_read_reg32(priv, C_CAN_TXRQST1_REG); - - /* - * as transmission request register's bit n-1 corresponds to - * message object n, we need to handle the same properly. - */ - if (val & (1 << (objno - 1))) - return 1; - - return 0; -} - static netdev_tx_t c_can_start_xmit(struct sk_buff *skb, - struct net_device *dev) + struct net_device *dev) { - u32 msg_obj_no; - struct c_can_priv *priv = netdev_priv(dev); struct can_frame *frame = (struct can_frame *)skb->data; + struct c_can_priv *priv = netdev_priv(dev); + u32 idx, obj; if (can_dropped_invalid_skb(dev, skb)) return NETDEV_TX_OK; - - spin_lock_bh(&priv->xmit_lock); - msg_obj_no = get_tx_next_msg_obj(priv); - - /* prepare message object for transmission */ - c_can_write_msg_object(dev, IF_TX, frame, msg_obj_no); - priv->dlc[msg_obj_no - C_CAN_MSG_OBJ_TX_FIRST] = frame->can_dlc; - can_put_echo_skb(skb, dev, msg_obj_no - C_CAN_MSG_OBJ_TX_FIRST); - /* - * we have to stop the queue in case of a wrap around or - * if the next TX message object is still in use + * This is not a FIFO. C/D_CAN sends out the buffers + * prioritized. The lowest buffer number wins. */ - priv->tx_next++; - if (c_can_is_next_tx_obj_busy(priv, get_tx_next_msg_obj(priv)) || - (priv->tx_next & C_CAN_NEXT_MSG_OBJ_MASK) == 0) + idx = fls(atomic_read(&priv->tx_active)); + obj = idx + C_CAN_MSG_OBJ_TX_FIRST; + + /* If this is the last buffer, stop the xmit queue */ + if (idx == C_CAN_MSG_OBJ_TX_NUM - 1) netif_stop_queue(dev); - spin_unlock_bh(&priv->xmit_lock); + /* + * Store the message in the interface so we can call + * can_put_echo_skb(). We must do this before we enable + * transmit as we might race against do_tx(). + */ + c_can_setup_tx_object(dev, IF_TX, frame, obj); + priv->dlc[idx] = frame->can_dlc; + can_put_echo_skb(skb, dev, idx); + + /* Update the active bits */ + atomic_add((1 << idx), &priv->tx_active); + /* Start transmission */ + c_can_object_put(dev, IF_TX, obj, IF_COMM_TX); return NETDEV_TX_OK; } @@ -589,6 +560,10 @@ static int c_can_chip_config(struct net_device *dev) /* set a `lec` value so that we can check for updates later */ priv->write_reg(priv, C_CAN_STS_REG, LEC_UNUSED); + /* Clear all internal status */ + atomic_set(&priv->tx_active, 0); + priv->rxmasked = 0; + /* set bittiming params */ return c_can_set_bittiming(dev); } @@ -609,10 +584,6 @@ static int c_can_start(struct net_device *dev) priv->can.state = CAN_STATE_ERROR_ACTIVE; - /* reset tx helper pointers and the rx mask */ - priv->tx_next = priv->tx_echo = 0; - priv->rxmasked = 0; - return 0; } @@ -671,42 +642,29 @@ static int c_can_get_berr_counter(const struct net_device *dev, return err; } -/* - * priv->tx_echo holds the number of the oldest can_frame put for - * transmission into the hardware, but not yet ACKed by the CAN tx - * complete IRQ. - * - * We iterate from priv->tx_echo to priv->tx_next and check if the - * packet has been transmitted, echo it back to the CAN framework. - * If we discover a not yet transmitted packet, stop looking for more. - */ static void c_can_do_tx(struct net_device *dev) { struct c_can_priv *priv = netdev_priv(dev); struct net_device_stats *stats = &dev->stats; - u32 val, obj, pkts = 0, bytes = 0; + u32 idx, obj, pkts = 0, bytes = 0, pend, clr; - spin_lock_bh(&priv->xmit_lock); + clr = pend = priv->read_reg(priv, C_CAN_INTPND2_REG); - for (; (priv->tx_next - priv->tx_echo) > 0; priv->tx_echo++) { - obj = get_tx_echo_msg_obj(priv->tx_echo); - val = c_can_read_reg32(priv, C_CAN_TXRQST1_REG); - - if (val & (1 << (obj - 1))) - break; - - can_get_echo_skb(dev, obj - C_CAN_MSG_OBJ_TX_FIRST); - bytes += priv->dlc[obj - C_CAN_MSG_OBJ_TX_FIRST]; + while ((idx = ffs(pend))) { + idx--; + pend &= ~(1 << idx); + obj = idx + C_CAN_MSG_OBJ_TX_FIRST; + c_can_inval_msg_object(dev, IF_RX, obj); + can_get_echo_skb(dev, idx); + bytes += priv->dlc[idx]; pkts++; - c_can_inval_msg_object(dev, IF_TX, obj); } - /* restart queue if wrap-up or if queue stalled on last pkt */ - if (((priv->tx_next & C_CAN_NEXT_MSG_OBJ_MASK) != 0) || - ((priv->tx_echo & C_CAN_NEXT_MSG_OBJ_MASK) == 0)) - netif_wake_queue(dev); + /* Clear the bits in the tx_active mask */ + atomic_sub(clr, &priv->tx_active); - spin_unlock_bh(&priv->xmit_lock); + if (clr & (1 << (C_CAN_MSG_OBJ_TX_NUM - 1))) + netif_wake_queue(dev); if (pkts) { stats->tx_bytes += bytes; @@ -1192,7 +1150,6 @@ struct net_device *alloc_c_can_dev(void) return NULL; priv = netdev_priv(dev); - spin_lock_init(&priv->xmit_lock); netif_napi_add(dev, &priv->napi, c_can_poll, C_CAN_NAPI_WEIGHT); priv->dev = dev; diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index d9f59cc4fcb5..a5f10a01e49f 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -37,8 +37,6 @@ #define C_CAN_MSG_OBJ_RX_SPLIT 9 #define C_CAN_MSG_RX_LOW_LAST (C_CAN_MSG_OBJ_RX_SPLIT - 1) - -#define C_CAN_NEXT_MSG_OBJ_MASK (C_CAN_MSG_OBJ_TX_NUM - 1) #define RECEIVE_OBJECT_BITS 0x0000ffff enum reg { @@ -175,16 +173,12 @@ struct c_can_priv { struct napi_struct napi; struct net_device *dev; struct device *device; - spinlock_t xmit_lock; - int tx_object; + atomic_t tx_active; int last_status; u16 (*read_reg) (struct c_can_priv *priv, enum reg index); void (*write_reg) (struct c_can_priv *priv, enum reg index, u16 val); void __iomem *base; const u16 *regs; - unsigned long irq_flags; /* for request_irq() */ - unsigned int tx_next; - unsigned int tx_echo; void *priv; /* for board-specific data */ enum c_can_dev_id type; u32 __iomem *raminit_ctrlreg; From 939415973fdfb2c16a474e2575ba2581b828ccac Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 11 Apr 2014 08:13:22 +0000 Subject: [PATCH 337/623] can: c_can: Speed up tx buffer invalidation It's suffcient to kill the TXIE bit in the message control register even if the documentation of C and D CAN says that it's not allowed to do that while MSGVAL is set. Reality tells a different story and this change gives us another 2% of CPU back for not waiting on I/O. Signed-off-by: Thomas Gleixner Tested-by: Alexander Stein Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.c | 54 +++++++++++++++++++++++++---------- drivers/net/can/c_can/c_can.h | 1 + 2 files changed, 40 insertions(+), 15 deletions(-) diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 99d36bf1ba21..a2ca820b5373 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -276,11 +276,34 @@ static inline void c_can_object_put(struct net_device *dev, int iface, c_can_obj_update(dev, iface, cmd | IF_COMM_WR, obj); } +/* + * Note: According to documentation clearing TXIE while MSGVAL is set + * is not allowed, but works nicely on C/DCAN. And that lowers the I/O + * load significantly. + */ +static void c_can_inval_tx_object(struct net_device *dev, int iface, int obj) +{ + struct c_can_priv *priv = netdev_priv(dev); + + priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), 0); + c_can_object_put(dev, iface, obj, IF_COMM_INVAL); +} + +static void c_can_inval_msg_object(struct net_device *dev, int iface, int obj) +{ + struct c_can_priv *priv = netdev_priv(dev); + + priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), 0); + priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), 0); + c_can_inval_tx_object(dev, iface, obj); +} + static void c_can_setup_tx_object(struct net_device *dev, int iface, - struct can_frame *frame, int obj) + struct can_frame *frame, int idx) { struct c_can_priv *priv = netdev_priv(dev); u16 ctrl = IF_MCONT_TX | frame->can_dlc; + bool rtr = frame->can_id & CAN_RTR_FLAG; u32 arb = IF_ARB_MSGVAL; int i; @@ -291,9 +314,20 @@ static void c_can_setup_tx_object(struct net_device *dev, int iface, arb |= (frame->can_id & CAN_SFF_MASK) << 18; } - if (!(frame->can_id & CAN_RTR_FLAG)) + if (!rtr) arb |= IF_ARB_TRANSMIT; + /* + * If we change the DIR bit, we need to invalidate the buffer + * first, i.e. clear the MSGVAL flag in the arbiter. + */ + if (rtr != (bool)test_bit(idx, &priv->tx_dir)) { + u32 obj = idx + C_CAN_MSG_OBJ_TX_FIRST; + + c_can_inval_msg_object(dev, iface, obj); + change_bit(idx, &priv->tx_dir); + } + priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), arb); priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), arb >> 16); @@ -401,17 +435,6 @@ static void c_can_setup_receive_object(struct net_device *dev, int iface, c_can_object_put(dev, iface, obj, IF_COMM_RCV_SETUP); } -static void c_can_inval_msg_object(struct net_device *dev, int iface, int obj) -{ - struct c_can_priv *priv = netdev_priv(dev); - - priv->write_reg(priv, C_CAN_IFACE(ARB1_REG, iface), 0); - priv->write_reg(priv, C_CAN_IFACE(ARB2_REG, iface), 0); - priv->write_reg(priv, C_CAN_IFACE(MSGCTRL_REG, iface), 0); - - c_can_object_put(dev, iface, obj, IF_COMM_INVAL); -} - static netdev_tx_t c_can_start_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -436,7 +459,7 @@ static netdev_tx_t c_can_start_xmit(struct sk_buff *skb, * can_put_echo_skb(). We must do this before we enable * transmit as we might race against do_tx(). */ - c_can_setup_tx_object(dev, IF_TX, frame, obj); + c_can_setup_tx_object(dev, IF_TX, frame, idx); priv->dlc[idx] = frame->can_dlc; can_put_echo_skb(skb, dev, idx); @@ -563,6 +586,7 @@ static int c_can_chip_config(struct net_device *dev) /* Clear all internal status */ atomic_set(&priv->tx_active, 0); priv->rxmasked = 0; + priv->tx_dir = 0; /* set bittiming params */ return c_can_set_bittiming(dev); @@ -654,7 +678,7 @@ static void c_can_do_tx(struct net_device *dev) idx--; pend &= ~(1 << idx); obj = idx + C_CAN_MSG_OBJ_TX_FIRST; - c_can_inval_msg_object(dev, IF_RX, obj); + c_can_inval_tx_object(dev, IF_RX, obj); can_get_echo_skb(dev, idx); bytes += priv->dlc[idx]; pkts++; diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index a5f10a01e49f..e7de2b9f26bb 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -174,6 +174,7 @@ struct c_can_priv { struct net_device *dev; struct device *device; atomic_t tx_active; + unsigned long tx_dir; int last_status; u16 (*read_reg) (struct c_can_priv *priv, enum reg index); void (*write_reg) (struct c_can_priv *priv, enum reg index, u16 val); From f323d7a1d2868c00b2604dca36ad82e8ecbe4270 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 17 Apr 2014 10:57:18 +0200 Subject: [PATCH 338/623] can: c_can: use proper type for 'instance' Commit 6439fbce1075 (can: c_can: fix error checking of priv->instance in probe()) found the warning but applied a suboptimal solution. Since, both pdev->id and of_alias_get_id() return integers, it makes sense to convert the variable to an integer and avoid the cast. Signed-off-by: Wolfram Sang Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can.h | 2 +- drivers/net/can/c_can/c_can_platform.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/c_can/c_can.h b/drivers/net/can/c_can/c_can.h index e7de2b9f26bb..c56f1b1c11ca 100644 --- a/drivers/net/can/c_can/c_can.h +++ b/drivers/net/can/c_can/c_can.h @@ -183,7 +183,7 @@ struct c_can_priv { void *priv; /* for board-specific data */ enum c_can_dev_id type; u32 __iomem *raminit_ctrlreg; - unsigned int instance; + int instance; void (*raminit) (const struct c_can_priv *priv, bool enable); u32 comm_rcv_high; u32 rxmasked; diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c index 806d92753427..1df0b322d1e4 100644 --- a/drivers/net/can/c_can/c_can_platform.c +++ b/drivers/net/can/c_can/c_can_platform.c @@ -222,7 +222,7 @@ static int c_can_plat_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 1); priv->raminit_ctrlreg = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(priv->raminit_ctrlreg) || (int)priv->instance < 0) + if (IS_ERR(priv->raminit_ctrlreg) || priv->instance < 0) dev_info(&pdev->dev, "control memory is not used for raminit\n"); else priv->raminit = c_can_hw_raminit; From 78c181bc8a75d3f0624eaf24aa8265d441990c8c Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Thu, 3 Apr 2014 20:41:24 +0200 Subject: [PATCH 339/623] can: c_can_pci: enable PCI bus master only for MSI Coverity complains that c_can_pci_probe() calls pci_enable_msi() without checking the result: CID 712278 (#1 of 1): Unchecked return value (CHECKED_RETURN) 3. check_return: Calling pci_enable_msi_block without checking return value (as is done elsewhere 88 out of 105 times). 88 pci_enable_msi(pdev); This is CID 712278. Signed-off-by: Wolfgang Grandegger Reported-by: Bjorn Helgaas Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/c_can_pci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/c_can/c_can_pci.c b/drivers/net/can/c_can/c_can_pci.c index 1b7ff400711a..fe5f6303b584 100644 --- a/drivers/net/can/c_can/c_can_pci.c +++ b/drivers/net/can/c_can/c_can_pci.c @@ -84,8 +84,11 @@ static int c_can_pci_probe(struct pci_dev *pdev, goto out_disable_device; } - pci_set_master(pdev); - pci_enable_msi(pdev); + ret = pci_enable_msi(pdev); + if (!ret) { + dev_info(&pdev->dev, "MSI enabled\n"); + pci_set_master(pdev); + } addr = pci_iomap(pdev, 0, pci_resource_len(pdev, 0)); if (!addr) { From a9edcdedbd3d8f3ffcd7bdcab5812707a25e554e Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Tue, 15 Apr 2014 19:30:00 +0200 Subject: [PATCH 340/623] can: sja1000_isa: add locking for indirect register access mode When accessing the SJA1000 controller registers in the indirect access mode, writing the register number and reading/writing the data has to be an atomic attempt. As the sja1000_isa driver is an old style driver with a fixed number of instances the locking variable depends on the same index like all the other configuration elements given on the module command line. As a positive side effect dev->dev_id is populated by the instance index, which was missing in 3e66d0138c05d9 ("can: populate netdev::dev_id for udev discrimination"). Reported-by: Marc Kleine-Budde Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- drivers/net/can/sja1000/sja1000_isa.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/sja1000/sja1000_isa.c b/drivers/net/can/sja1000/sja1000_isa.c index df136a2516c4..014695d7e6a3 100644 --- a/drivers/net/can/sja1000/sja1000_isa.c +++ b/drivers/net/can/sja1000/sja1000_isa.c @@ -46,6 +46,7 @@ static int clk[MAXDEV]; static unsigned char cdr[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff}; static unsigned char ocr[MAXDEV] = {[0 ... (MAXDEV - 1)] = 0xff}; static int indirect[MAXDEV] = {[0 ... (MAXDEV - 1)] = -1}; +static spinlock_t indirect_lock[MAXDEV]; /* lock for indirect access mode */ module_param_array(port, ulong, NULL, S_IRUGO); MODULE_PARM_DESC(port, "I/O port number"); @@ -101,19 +102,26 @@ static void sja1000_isa_port_write_reg(const struct sja1000_priv *priv, static u8 sja1000_isa_port_read_reg_indirect(const struct sja1000_priv *priv, int reg) { - unsigned long base = (unsigned long)priv->reg_base; + unsigned long flags, base = (unsigned long)priv->reg_base; + u8 readval; + spin_lock_irqsave(&indirect_lock[priv->dev->dev_id], flags); outb(reg, base); - return inb(base + 1); + readval = inb(base + 1); + spin_unlock_irqrestore(&indirect_lock[priv->dev->dev_id], flags); + + return readval; } static void sja1000_isa_port_write_reg_indirect(const struct sja1000_priv *priv, int reg, u8 val) { - unsigned long base = (unsigned long)priv->reg_base; + unsigned long flags, base = (unsigned long)priv->reg_base; + spin_lock_irqsave(&indirect_lock[priv->dev->dev_id], flags); outb(reg, base); outb(val, base + 1); + spin_unlock_irqrestore(&indirect_lock[priv->dev->dev_id], flags); } static int sja1000_isa_probe(struct platform_device *pdev) @@ -169,6 +177,7 @@ static int sja1000_isa_probe(struct platform_device *pdev) if (iosize == SJA1000_IOSIZE_INDIRECT) { priv->read_reg = sja1000_isa_port_read_reg_indirect; priv->write_reg = sja1000_isa_port_write_reg_indirect; + spin_lock_init(&indirect_lock[idx]); } else { priv->read_reg = sja1000_isa_port_read_reg; priv->write_reg = sja1000_isa_port_write_reg; @@ -198,6 +207,7 @@ static int sja1000_isa_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); SET_NETDEV_DEV(dev, &pdev->dev); + dev->dev_id = idx; err = register_sja1000dev(dev); if (err) { From d482443244b820f03a5a07d1bca6a0f5e2b4804c Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Wed, 23 Apr 2014 22:10:55 +0200 Subject: [PATCH 341/623] can: fix return value from can_get_bittiming() When trying to set a data bitrate on non CAN FD devices the 'ip' tool answers with: RTNETLINK answers: Unknown error 524 Rename '-ENOTSUPP' to '-EOPNOTSUPP' so that 'ip' answers correctly: RTNETLINK answers: Operation not supported Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- drivers/net/can/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index c7a260478749..e318e87e2bfc 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -256,7 +256,7 @@ static int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt, /* Check if the CAN device has bit-timing parameters */ if (!btc) - return -ENOTSUPP; + return -EOPNOTSUPP; /* * Depending on the given can_bittiming parameter structure the CAN From 367525c8c20a34560afe1d0c7cca52a44ccd62e9 Mon Sep 17 00:00:00 2001 From: Alexander Stein Date: Tue, 15 Apr 2014 16:51:04 +0200 Subject: [PATCH 342/623] can: slcan: Fix spinlock variant slc_xmit is called within softirq context and locks sl->lock, but slcan_write_wakeup is not softirq context, so we need to use spin_[un]lock_bh! Detected using kernel lock debugging mechanism. Signed-off-by: Alexander Stein Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- drivers/net/can/slcan.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index f5b16e0e3a12..dcf9196f6316 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -322,13 +322,13 @@ static void slcan_write_wakeup(struct tty_struct *tty) if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev)) return; - spin_lock(&sl->lock); + spin_lock_bh(&sl->lock); if (sl->xleft <= 0) { /* Now serial buffer is almost free & we can start * transmission of another packet */ sl->dev->stats.tx_packets++; clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); - spin_unlock(&sl->lock); + spin_unlock_bh(&sl->lock); netif_wake_queue(sl->dev); return; } @@ -336,7 +336,7 @@ static void slcan_write_wakeup(struct tty_struct *tty) actual = tty->ops->write(tty, sl->xhead, sl->xleft); sl->xleft -= actual; sl->xhead += actual; - spin_unlock(&sl->lock); + spin_unlock_bh(&sl->lock); } /* Send a can_frame to a TTY queue. */ From 9ec36cafe43bf835f8f29273597a5b0cbc8267ef Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Wed, 23 Apr 2014 17:57:41 -0500 Subject: [PATCH 343/623] of/irq: do irq resolution in platform_get_irq Currently we get the following kind of errors if we try to use interrupt phandles to irqchips that have not yet initialized: irq: no irq domain found for /ocp/pinmux@48002030 ! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x144/0x184() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-00038-g42a9708 #1012 (show_stack+0x14/0x1c) (dump_stack+0x6c/0xa0) (warn_slowpath_common+0x64/0x84) (warn_slowpath_null+0x1c/0x24) (of_device_alloc+0x144/0x184) (of_platform_device_create_pdata+0x44/0x9c) (of_platform_bus_create+0xd0/0x170) (of_platform_bus_create+0x12c/0x170) (of_platform_populate+0x60/0x98) This is because we're wrongly trying to populate resources that are not yet available. It's perfectly valid to create irqchips dynamically, so let's fix up the issue by resolving the interrupt resources when platform_get_irq is called. And then we also need to accept the fact that some irqdomains do not exist that early on, and only get initialized later on. So we can make the current WARN_ON into just into a pr_debug(). We still attempt to populate irq resources when we create the devices. This allows current drivers which don't use platform_get_irq to continue to function. Once all drivers are fixed, this code can be removed. Suggested-by: Russell King Signed-off-by: Rob Herring Signed-off-by: Tony Lindgren Tested-by: Tony Lindgren Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: Grant Likely --- drivers/base/platform.c | 7 ++++++- drivers/of/irq.c | 26 ++++++++++++++++++++++++++ drivers/of/platform.c | 4 +++- include/linux/of_irq.h | 5 +++++ 4 files changed, 40 insertions(+), 2 deletions(-) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index e714709704e4..5b47210889e0 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -87,7 +88,11 @@ int platform_get_irq(struct platform_device *dev, unsigned int num) return -ENXIO; return dev->archdata.irqs[num]; #else - struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num); + struct resource *r; + if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) + return of_irq_get(dev->dev.of_node, num); + + r = platform_get_resource(dev, IORESOURCE_IRQ, num); return r ? r->start : -ENXIO; #endif diff --git a/drivers/of/irq.c b/drivers/of/irq.c index e2e4c548a42f..5aeb89411350 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -379,6 +379,32 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) } EXPORT_SYMBOL_GPL(of_irq_to_resource); +/** + * of_irq_get - Decode a node's IRQ and return it as a Linux irq number + * @dev: pointer to device tree node + * @index: zero-based index of the irq + * + * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain + * is not yet created. + * + */ +int of_irq_get(struct device_node *dev, int index) +{ + int rc; + struct of_phandle_args oirq; + struct irq_domain *domain; + + rc = of_irq_parse_one(dev, index, &oirq); + if (rc) + return rc; + + domain = irq_find_host(oirq.np); + if (!domain) + return -EPROBE_DEFER; + + return irq_create_of_mapping(&oirq); +} + /** * of_irq_count - Count the number of IRQs a node uses * @dev: pointer to device tree node diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 404d1daebefa..bd47fbc53dc9 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -168,7 +168,9 @@ struct platform_device *of_device_alloc(struct device_node *np, rc = of_address_to_resource(np, i, res); WARN_ON(rc); } - WARN_ON(of_irq_to_resource_table(np, res, num_irq) != num_irq); + if (of_irq_to_resource_table(np, res, num_irq) != num_irq) + pr_debug("not all legacy IRQ resources mapped for %s\n", + np->name); } dev->dev.of_node = of_node_get(np); diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index 3f23b4472c31..6404253d810d 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -44,11 +44,16 @@ extern void of_irq_init(const struct of_device_id *matches); #ifdef CONFIG_OF_IRQ extern int of_irq_count(struct device_node *dev); +extern int of_irq_get(struct device_node *dev, int index); #else static inline int of_irq_count(struct device_node *dev) { return 0; } +static inline int of_irq_get(struct device_node *dev, int index) +{ + return 0; +} #endif #if defined(CONFIG_OF) From 1c2658545816088477e91860c3a645053719cb54 Mon Sep 17 00:00:00 2001 From: Kumar Sundararajan Date: Thu, 24 Apr 2014 09:48:53 -0400 Subject: [PATCH 344/623] ipv6: fib: fix fib dump restart When the ipv6 fib changes during a table dump, the walk is restarted and the number of nodes dumped are skipped. But the existing code doesn't advance to the next node after a node is skipped. This can cause the dump to loop or produce lots of duplicates when the fib is modified during the dump. This change advances the walk to the next node if the current node is skipped after a restart. Signed-off-by: Kumar Sundararajan Signed-off-by: Chris Mason Signed-off-by: David S. Miller --- net/ipv6/ip6_fib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 34e0ded5c14b..87891f5f57b5 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -1459,7 +1459,7 @@ static int fib6_walk_continue(struct fib6_walker_t *w) if (w->skip) { w->skip--; - continue; + goto skip; } err = w->func(w); @@ -1469,6 +1469,7 @@ static int fib6_walk_continue(struct fib6_walker_t *w) w->count++; continue; } +skip: w->state = FWS_U; case FWS_U: if (fn == w->root) From 6a20dbd6caa2358716136144bf524331d70b1e03 Mon Sep 17 00:00:00 2001 From: Manfred Schlaegl Date: Tue, 8 Apr 2014 14:42:04 +0200 Subject: [PATCH 345/623] tty: Fix race condition between __tty_buffer_request_room and flush_to_ldisc The race was introduced while development of linux-3.11 by e8437d7ecbc50198705331449367d401ebb3181f and e9975fdec0138f1b2a85b9624e41660abd9865d4. Originally it was found and reproduced on linux-3.12.15 and linux-3.12.15-rt25, by sending 500 byte blocks with 115kbaud to the target uart in a loop with 100 milliseconds delay. In short: 1. The consumer flush_to_ldisc is on to remove the head tty_buffer. 2. The producer adds a number of bytes, so that a new tty_buffer must be allocated and added by __tty_buffer_request_room. 3. The consumer removes the head tty_buffer element, without handling newly committed data. Detailed example: * Initial buffer: * Head, Tail -> 0: used=250; commit=250; read=240; next=NULL * Consumer: ''flush_to_ldisc'' * consumed 10 Byte * buffer: * Head, Tail -> 0: used=250; commit=250; read=250; next=NULL {{{ count = head->commit - head->read; // count = 0 if (!count) { // enter // INTERRUPTED BY PRODUCER -> if (head->next == NULL) break; buf->head = head->next; tty_buffer_free(port, head); continue; } }}} * Producer: tty_insert_flip_... 10 bytes + tty_flip_buffer_push * buffer: * Head, Tail -> 0: used=250; commit=250; read=250; next=NULL * added 6 bytes: head-element filled to maximum. * buffer: * Head, Tail -> 0: used=256; commit=250; read=250; next=NULL * added 4 bytes: __tty_buffer_request_room is called * buffer: * Head -> 0: used=256; commit=256; read=250; next=1 * Tail -> 1: used=4; commit=0; read=250 next=NULL * push (tty_flip_buffer_push) * buffer: * Head -> 0: used=256; commit=256; read=250; next=1 * Tail -> 1: used=4; commit=4; read=250 next=NULL * Consumer {{{ count = head->commit - head->read; if (!count) { // INTERRUPTED BY PRODUCER <- if (head->next == NULL) // -> no break break; buf->head = head->next; tty_buffer_free(port, head); // ERROR: tty_buffer head freed -> 6 bytes lost continue; } }}} This patch reintroduces a spin_lock to protect this case. Perhaps later a lock-less solution could be found. Signed-off-by: Manfred Schlaegl Cc: stable # 3.11 Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 16 ++++++++++++++-- include/linux/tty.h | 1 + 2 files changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 8ebd9f88a6f6..f1d30f6945af 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -255,11 +255,16 @@ static int __tty_buffer_request_room(struct tty_port *port, size_t size, if (change || left < size) { /* This is the slow path - looking for new buffers to use */ if ((n = tty_buffer_alloc(port, size)) != NULL) { + unsigned long iflags; + n->flags = flags; buf->tail = n; + + spin_lock_irqsave(&buf->flush_lock, iflags); b->commit = b->used; - smp_mb(); b->next = n; + spin_unlock_irqrestore(&buf->flush_lock, iflags); + } else if (change) size = 0; else @@ -443,6 +448,7 @@ static void flush_to_ldisc(struct work_struct *work) mutex_lock(&buf->lock); while (1) { + unsigned long flags; struct tty_buffer *head = buf->head; int count; @@ -450,14 +456,19 @@ static void flush_to_ldisc(struct work_struct *work) if (atomic_read(&buf->priority)) break; + spin_lock_irqsave(&buf->flush_lock, flags); count = head->commit - head->read; if (!count) { - if (head->next == NULL) + if (head->next == NULL) { + spin_unlock_irqrestore(&buf->flush_lock, flags); break; + } buf->head = head->next; + spin_unlock_irqrestore(&buf->flush_lock, flags); tty_buffer_free(port, head); continue; } + spin_unlock_irqrestore(&buf->flush_lock, flags); count = receive_buf(tty, head, count); if (!count) @@ -512,6 +523,7 @@ void tty_buffer_init(struct tty_port *port) struct tty_bufhead *buf = &port->buf; mutex_init(&buf->lock); + spin_lock_init(&buf->flush_lock); tty_buffer_reset(&buf->sentinel, 0); buf->head = &buf->sentinel; buf->tail = &buf->sentinel; diff --git a/include/linux/tty.h b/include/linux/tty.h index 1c3316a47d7e..036cccd80d9f 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -61,6 +61,7 @@ struct tty_bufhead { struct tty_buffer *head; /* Queue head */ struct work_struct work; struct mutex lock; + spinlock_t flush_lock; atomic_t priority; struct tty_buffer sentinel; struct llist_head free; /* Free queue head */ From b08c9c317e3f7764a91d522cd031639ba42b98cc Mon Sep 17 00:00:00 2001 From: Loic Poulain Date: Thu, 24 Apr 2014 11:38:56 +0200 Subject: [PATCH 346/623] 8250_core: Fix unwanted TX chars write On transmit-hold-register empty, serial8250_tx_chars should be called only if we don't use DMA. DMA has its own tx cycle. Signed-off-by: Loic Poulain Reviewed-by: Heikki Krogerus Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 81f909c2101f..0e1bf8858431 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -1520,7 +1520,7 @@ int serial8250_handle_irq(struct uart_port *port, unsigned int iir) status = serial8250_rx_chars(up, status); } serial8250_modem_status(up); - if (status & UART_LSR_THRE) + if (!up->dma && (status & UART_LSR_THRE)) serial8250_tx_chars(up); spin_unlock_irqrestore(&port->lock, flags); From f8fd1b0350d3a4581125f5eda6528f5a2c5f9183 Mon Sep 17 00:00:00 2001 From: Loic Poulain Date: Thu, 24 Apr 2014 11:34:48 +0200 Subject: [PATCH 347/623] serial: 8250: Fix thread unsafe __dma_tx_complete function __dma_tx_complete is not protected against concurrent call of serial8250_tx_dma. it can lead to circular tail index corruption or parallel call of serial_tx_dma on the same data portion. This patch fixes this issue by holding the port lock. Signed-off-by: Loic Poulain Reviewed-by: Heikki Krogerus Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_dma.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 7046769608d4..ab9096dc3849 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -20,12 +20,15 @@ static void __dma_tx_complete(void *param) struct uart_8250_port *p = param; struct uart_8250_dma *dma = p->dma; struct circ_buf *xmit = &p->port.state->xmit; - - dma->tx_running = 0; + unsigned long flags; dma_sync_single_for_cpu(dma->txchan->device->dev, dma->tx_addr, UART_XMIT_SIZE, DMA_TO_DEVICE); + spin_lock_irqsave(&p->port.lock, flags); + + dma->tx_running = 0; + xmit->tail += dma->tx_size; xmit->tail &= UART_XMIT_SIZE - 1; p->port.icount.tx += dma->tx_size; @@ -35,6 +38,8 @@ static void __dma_tx_complete(void *param) if (!uart_circ_empty(xmit) && !uart_tx_stopped(&p->port)) serial8250_tx_dma(p); + + spin_unlock_irqrestore(&p->port.lock, flags); } static void __dma_rx_complete(void *param) From bb7f09ba961dd43a2398975cc2d4ad0eb77ec865 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Mon, 21 Apr 2014 09:40:34 -0700 Subject: [PATCH 348/623] serial: samsung: Use the passed in "port", fixing kgdb w/ no console The two functions in the samsung serial driver used for writing characters out to the port were inconsistent about whether they used the passed in "port" or the global "cons_uart". There was no reason to use the global and the use of the global in s3c24xx_serial_put_poll_char() caused a crash in the case where you used the serial port for kgdboc but not for console. Fix it so we used the passed in variable. Note that this doesn't fix all problems with the samsung serial driver. Specifically: * s3c24xx_serial_console_putchar() is still 99% identical to s3c24xx_serial_put_poll_char() (the function signature is different, but that's about it). A future patch will make them slightly less identical and judging by other serial drivers we may need yet more differences eventually. * The samsung serial driver still doesn't allow you to have more than one console port since it still uses the global cons_uart in s3c24xx_serial_console_write(). Signed-off-by: Doug Anderson Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/samsung.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 23f459600738..a8e8b796f4f7 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1446,8 +1446,8 @@ static int s3c24xx_serial_get_poll_char(struct uart_port *port) static void s3c24xx_serial_put_poll_char(struct uart_port *port, unsigned char c) { - unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON); - unsigned int ucon = rd_regl(cons_uart, S3C2410_UCON); + unsigned int ufcon = rd_regl(port, S3C2410_UFCON); + unsigned int ucon = rd_regl(port, S3C2410_UCON); /* not possible to xmit on unconfigured port */ if (!s3c24xx_port_configured(ucon)) @@ -1455,7 +1455,7 @@ static void s3c24xx_serial_put_poll_char(struct uart_port *port, while (!s3c24xx_serial_console_txrdy(port, ufcon)) cpu_relax(); - wr_regb(cons_uart, S3C2410_UTXH, c); + wr_regb(port, S3C2410_UTXH, c); } #endif /* CONFIG_CONSOLE_POLL */ @@ -1463,8 +1463,8 @@ static void s3c24xx_serial_put_poll_char(struct uart_port *port, static void s3c24xx_serial_console_putchar(struct uart_port *port, int ch) { - unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON); - unsigned int ucon = rd_regl(cons_uart, S3C2410_UCON); + unsigned int ufcon = rd_regl(port, S3C2410_UFCON); + unsigned int ucon = rd_regl(port, S3C2410_UCON); /* not possible to xmit on unconfigured port */ if (!s3c24xx_port_configured(ucon)) @@ -1472,7 +1472,7 @@ s3c24xx_serial_console_putchar(struct uart_port *port, int ch) while (!s3c24xx_serial_console_txrdy(port, ufcon)) barrier(); - wr_regb(cons_uart, S3C2410_UTXH, ch); + wr_regb(port, S3C2410_UTXH, ch); } static void From ab88c8dc3bd667bcf21c8319165db92b930cf7e7 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Mon, 21 Apr 2014 09:40:35 -0700 Subject: [PATCH 349/623] serial: samsung: don't check config for every character The s3c24xx_serial_console_putchar() is _only_ ever used by s3c24xx_serial_console_write() and is called in a loop (indirectly through uart_console_write()). There's no reason to call s3c24xx_port_configured() for every iteration through the loop. Move it outside the loop. Signed-off-by: Doug Anderson Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/samsung.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index a8e8b796f4f7..12442748d69f 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1464,11 +1464,6 @@ static void s3c24xx_serial_console_putchar(struct uart_port *port, int ch) { unsigned int ufcon = rd_regl(port, S3C2410_UFCON); - unsigned int ucon = rd_regl(port, S3C2410_UCON); - - /* not possible to xmit on unconfigured port */ - if (!s3c24xx_port_configured(ucon)) - return; while (!s3c24xx_serial_console_txrdy(port, ufcon)) barrier(); @@ -1479,6 +1474,12 @@ static void s3c24xx_serial_console_write(struct console *co, const char *s, unsigned int count) { + unsigned int ucon = rd_regl(cons_uart, S3C2410_UCON); + + /* not possible to xmit on unconfigured port */ + if (!s3c24xx_port_configured(ucon)) + return; + uart_console_write(cons_uart, s, count, s3c24xx_serial_console_putchar); } From f94b0572683716f727b25086f8d39671506593ab Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Mon, 21 Apr 2014 09:40:36 -0700 Subject: [PATCH 350/623] serial: samsung: Change barrier() to cpu_relax() in console output The two functions to write out to the console (one used in normal console mode and one in polling console mode) were slightly different. One used a barrier() in its loop and the other a cpu_relax(). The barrier() really doesn't do anything since we're using rd_regl() to read the port anyway. Switch it to cpu_relax() to make things consistent. No known bugs / issues are fixed by this change--it just makes things more consistent. Signed-off-by: Doug Anderson Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/samsung.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 12442748d69f..1f5505e7f90d 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1466,7 +1466,7 @@ s3c24xx_serial_console_putchar(struct uart_port *port, int ch) unsigned int ufcon = rd_regl(port, S3C2410_UFCON); while (!s3c24xx_serial_console_txrdy(port, ufcon)) - barrier(); + cpu_relax(); wr_regb(port, S3C2410_UTXH, ch); } From 7deb39ed8d9494ea541bcaa69b56036a94f79dc2 Mon Sep 17 00:00:00 2001 From: Thomas Pfaff Date: Wed, 23 Apr 2014 12:33:22 +0200 Subject: [PATCH 351/623] serial_core: fix uart PORT_UNKNOWN handling While porting a RS485 driver from 2.6.29 to 3.14, i noticed that the serial tty driver could break it by using uart ports that it does not own : 1. uart_change_pm ist called during uart_open and calls the uart pm function without checking for PORT_UNKNOWN. The fix is to move uart_change_pm from uart_open to uart_port_startup. 2. The return code from the uart request_port call in uart_set_info is not handled properly, leading to the situation that the serial driver also thinks it owns the uart ports. This can triggered by doing following actions : setserial /dev/ttyS0 uart none # release the uart ports modprobe lirc-serial # or any other device that uses the uart setserial /dev/ttyS0 uart 16550 # gives no error and the uart tty driver # can use the ports as well Signed-off-by: Thomas Pfaff Reviewed-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/serial_core.c | 39 +++++++++++++++++--------------- 1 file changed, 21 insertions(+), 18 deletions(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index f26834d262b3..b68550d95a40 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -136,6 +136,11 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state, if (uport->type == PORT_UNKNOWN) return 1; + /* + * Make sure the device is in D0 state. + */ + uart_change_pm(state, UART_PM_STATE_ON); + /* * Initialise and allocate the transmit and temporary * buffer. @@ -825,25 +830,29 @@ static int uart_set_info(struct tty_struct *tty, struct tty_port *port, * If we fail to request resources for the * new port, try to restore the old settings. */ - if (retval && old_type != PORT_UNKNOWN) { + if (retval) { uport->iobase = old_iobase; uport->type = old_type; uport->hub6 = old_hub6; uport->iotype = old_iotype; uport->regshift = old_shift; uport->mapbase = old_mapbase; - retval = uport->ops->request_port(uport); - /* - * If we failed to restore the old settings, - * we fail like this. - */ - if (retval) - uport->type = PORT_UNKNOWN; - /* - * We failed anyway. - */ - retval = -EBUSY; + if (old_type != PORT_UNKNOWN) { + retval = uport->ops->request_port(uport); + /* + * If we failed to restore the old settings, + * we fail like this. + */ + if (retval) + uport->type = PORT_UNKNOWN; + + /* + * We failed anyway. + */ + retval = -EBUSY; + } + /* Added to return the correct error -Ram Gupta */ goto exit; } @@ -1570,12 +1579,6 @@ static int uart_open(struct tty_struct *tty, struct file *filp) goto err_dec_count; } - /* - * Make sure the device is in D0 state. - */ - if (port->count == 1) - uart_change_pm(state, UART_PM_STATE_ON); - /* * Start up the serial port. */ From c5f7d0bb29df2e1848a236e58e201daf5b4e0f21 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Tue, 15 Apr 2014 10:41:00 +0800 Subject: [PATCH 352/623] btrfs: Change the hole range to a more accurate value. Commit 3ac0d7b96a268a98bd474cab8bce3a9f125aaccf fixed the btrfs expanding write problem but the hole punched is sometimes too large for some iovec, which has unmapped data ranges. This patch will change to hole range to a more accurate value using the counts checked by the write check routines. Reported-by: Al Viro Signed-off-by: Qu Wenruo Signed-off-by: Chris Mason --- fs/btrfs/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 23f6a9d9f104..e7e78fa9085e 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1783,7 +1783,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, start_pos = round_down(pos, root->sectorsize); if (start_pos > i_size_read(inode)) { /* Expand hole size to cover write data, preventing empty gap */ - end_pos = round_up(pos + iov->iov_len, root->sectorsize); + end_pos = round_up(pos + count, root->sectorsize); err = btrfs_cont_expand(inode, i_size_read(inode), end_pos); if (err) { mutex_unlock(&inode->i_mutex); From 3f9e3df8da3c51649c15db249978a10f7374236a Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 15 Apr 2014 18:50:17 +0200 Subject: [PATCH 353/623] btrfs: replace error code from btrfs_drop_extents There's a case which clone does not handle and used to BUG_ON instead, (testcase xfstests/btrfs/035), now returns EINVAL. This error code is confusing to the ioctl caller, as it normally signifies errorneous arguments. Change it to ENOPNOTSUPP which allows a fall back to copy instead of clone. This does not affect the common reflink operation. Signed-off-by: David Sterba Signed-off-by: Chris Mason --- fs/btrfs/file.c | 6 +++--- fs/btrfs/ioctl.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index e7e78fa9085e..1eee3f79d75f 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -805,7 +805,7 @@ next_slot: if (start > key.offset && end < extent_end) { BUG_ON(del_nr > 0); if (extent_type == BTRFS_FILE_EXTENT_INLINE) { - ret = -EINVAL; + ret = -EOPNOTSUPP; break; } @@ -851,7 +851,7 @@ next_slot: */ if (start <= key.offset && end < extent_end) { if (extent_type == BTRFS_FILE_EXTENT_INLINE) { - ret = -EINVAL; + ret = -EOPNOTSUPP; break; } @@ -877,7 +877,7 @@ next_slot: if (start > key.offset && end >= extent_end) { BUG_ON(del_nr > 0); if (extent_type == BTRFS_FILE_EXTENT_INLINE) { - ret = -EINVAL; + ret = -EOPNOTSUPP; break; } diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index f2e8fcc279a3..7b001abc73c7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -3088,7 +3088,7 @@ process_slot: new_key.offset + datal, 1); if (ret) { - if (ret != -EINVAL) + if (ret != -EOPNOTSUPP) btrfs_abort_transaction(trans, root, ret); btrfs_end_transaction(trans, root); @@ -3163,7 +3163,7 @@ process_slot: new_key.offset + datal, 1); if (ret) { - if (ret != -EINVAL) + if (ret != -EOPNOTSUPP) btrfs_abort_transaction(trans, root, ret); btrfs_end_transaction(trans, root); From 9d89ce658718d9d21465666127a15ca2c82c4ea7 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Wed, 23 Apr 2014 19:33:33 +0800 Subject: [PATCH 354/623] Btrfs: move btrfs_{set,clear}_and_info() to ctree.h Signed-off-by: Wang Shilong Signed-off-by: Chris Mason --- fs/btrfs/ctree.h | 14 ++++++++++++++ fs/btrfs/super.c | 14 -------------- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ad1a5943a923..e7c9e1c540f4 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2058,6 +2058,20 @@ struct btrfs_ioctl_defrag_range_args { #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ BTRFS_MOUNT_##opt) +#define btrfs_set_and_info(root, opt, fmt, args...) \ +{ \ + if (!btrfs_test_opt(root, opt)) \ + btrfs_info(root->fs_info, fmt, ##args); \ + btrfs_set_opt(root->fs_info->mount_opt, opt); \ +} + +#define btrfs_clear_and_info(root, opt, fmt, args...) \ +{ \ + if (btrfs_test_opt(root, opt)) \ + btrfs_info(root->fs_info, fmt, ##args); \ + btrfs_clear_opt(root->fs_info->mount_opt, opt); \ +} + /* * Inode flags */ diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 53bc3733d483..363404b9713f 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -385,20 +385,6 @@ static match_table_t tokens = { {Opt_err, NULL}, }; -#define btrfs_set_and_info(root, opt, fmt, args...) \ -{ \ - if (!btrfs_test_opt(root, opt)) \ - btrfs_info(root->fs_info, fmt, ##args); \ - btrfs_set_opt(root->fs_info->mount_opt, opt); \ -} - -#define btrfs_clear_and_info(root, opt, fmt, args...) \ -{ \ - if (btrfs_test_opt(root, opt)) \ - btrfs_info(root->fs_info, fmt, ##args); \ - btrfs_clear_opt(root->fs_info->mount_opt, opt); \ -} - /* * Regular mount options parser. Everything that is needed only when * reading in a new superblock is parsed here. From e60efa84252c059bde5f65fccc6af94478d39e3b Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Wed, 23 Apr 2014 19:33:34 +0800 Subject: [PATCH 355/623] Btrfs: avoid triggering bug_on() when we fail to start inode caching task When running stress test(including snapshots,balance,fstress), we trigger the following BUG_ON() which is because we fail to start inode caching task. [ 181.131945] kernel BUG at fs/btrfs/inode-map.c:179! [ 181.137963] invalid opcode: 0000 [#1] SMP [ 181.217096] CPU: 11 PID: 2532 Comm: btrfs Not tainted 3.14.0 #1 [ 181.240521] task: ffff88013b621b30 ti: ffff8800b6ada000 task.ti: ffff8800b6ada000 [ 181.367506] Call Trace: [ 181.371107] [] btrfs_return_ino+0x9e/0x110 [btrfs] [ 181.379191] [] btrfs_evict_inode+0x46b/0x4c0 [btrfs] [ 181.387464] [] ? autoremove_wake_function+0x40/0x40 [ 181.395642] [] evict+0x9e/0x190 [ 181.401882] [] iput+0xf3/0x180 [ 181.408025] [] btrfs_orphan_cleanup+0x1ee/0x430 [btrfs] [ 181.416614] [] btrfs_mksubvol.isra.29+0x3bd/0x450 [btrfs] [ 181.425399] [] btrfs_ioctl_snap_create_transid+0x186/0x190 [btrfs] [ 181.435059] [] btrfs_ioctl_snap_create_v2+0xeb/0x130 [btrfs] [ 181.444148] [] btrfs_ioctl+0xf76/0x2b90 [btrfs] [ 181.451971] [] ? handle_mm_fault+0x475/0xe80 [ 181.459509] [] ? __do_page_fault+0x1ec/0x520 [ 181.467046] [] ? do_mmap_pgoff+0x2f5/0x3c0 [ 181.474393] [] do_vfs_ioctl+0x2d8/0x4b0 [ 181.481450] [] SyS_ioctl+0x81/0xa0 [ 181.488021] [] system_call_fastpath+0x16/0x1b We should avoid triggering BUG_ON() here, instead, we output warning messages and clear inode_cache option. Signed-off-by: Wang Shilong Signed-off-by: Chris Mason --- fs/btrfs/inode-map.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index cc8ca193d830..8ad529e3e67e 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -176,7 +176,11 @@ static void start_caching(struct btrfs_root *root) tsk = kthread_run(caching_kthread, root, "btrfs-ino-cache-%llu\n", root->root_key.objectid); - BUG_ON(IS_ERR(tsk)); /* -ENOMEM */ + if (IS_ERR(tsk)) { + btrfs_warn(root->fs_info, "failed to start inode caching task"); + btrfs_clear_and_info(root, CHANGE_INODE_CACHE, + "disabling inode map caching"); + } } int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid) From 28c16cbbc32781224309e50cc99c684f2498bc59 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Wed, 23 Apr 2014 19:33:35 +0800 Subject: [PATCH 356/623] Btrfs: fix possible memory leaks in open_ctree() Fix possible memory leaks in the following error handling paths: read_tree_block() btrfs_recover_log_trees btrfs_commit_super() btrfs_find_orphan_roots() btrfs_cleanup_fs_roots() Signed-off-by: Wang Shilong Signed-off-by: Chris Mason --- fs/btrfs/disk-io.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 6d1ac7d46f81..0e4fb4a5c7f0 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2864,7 +2864,7 @@ retry_root_backup: printk(KERN_ERR "BTRFS: failed to read log tree\n"); free_extent_buffer(log_tree_root->node); kfree(log_tree_root); - goto fail_trans_kthread; + goto fail_qgroup; } /* returns with log_tree_root freed on success */ ret = btrfs_recover_log_trees(log_tree_root); @@ -2873,24 +2873,24 @@ retry_root_backup: "Failed to recover log tree"); free_extent_buffer(log_tree_root->node); kfree(log_tree_root); - goto fail_trans_kthread; + goto fail_qgroup; } if (sb->s_flags & MS_RDONLY) { ret = btrfs_commit_super(tree_root); if (ret) - goto fail_trans_kthread; + goto fail_qgroup; } } ret = btrfs_find_orphan_roots(tree_root); if (ret) - goto fail_trans_kthread; + goto fail_qgroup; if (!(sb->s_flags & MS_RDONLY)) { ret = btrfs_cleanup_fs_roots(fs_info); if (ret) - goto fail_trans_kthread; + goto fail_qgroup; ret = btrfs_recover_relocation(tree_root); if (ret < 0) { From 1c70d8fb4dfa95bee491816b2a6767b5ca1080e7 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Wed, 23 Apr 2014 19:33:36 +0800 Subject: [PATCH 357/623] Btrfs: fix inode caching vs tree log Currently, with inode cache enabled, we will reuse its inode id immediately after unlinking file, we may hit something like following: |->iput inode |->return inode id into inode cache |->create dir,fsync |->power off An easy way to reproduce this problem is: mkfs.btrfs -f /dev/sdb mount /dev/sdb /mnt -o inode_cache,commit=100 dd if=/dev/zero of=/mnt/data bs=1M count=10 oflag=sync inode_id=`ls -i /mnt/data | awk '{print $1}'` rm -f /mnt/data i=1 while [ 1 ] do mkdir /mnt/dir_$i test1=`stat /mnt/dir_$i | grep Inode: | awk '{print $4}'` if [ $test1 -eq $inode_id ] then dd if=/dev/zero of=/mnt/dir_$i/data bs=1M count=1 oflag=sync echo b > /proc/sysrq-trigger fi sleep 1 i=$(($i+1)) done mount /dev/sdb /mnt umount /dev/sdb btrfs check /dev/sdb We fix this problem by adding unlinked inode's id into pinned tree, and we can not reuse them until committing transaction. Cc: stable@vger.kernel.org Signed-off-by: Miao Xie Signed-off-by: Wang Shilong Signed-off-by: Chris Mason --- fs/btrfs/inode-map.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index 8ad529e3e67e..86935f5ae291 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -209,24 +209,14 @@ again: void btrfs_return_ino(struct btrfs_root *root, u64 objectid) { - struct btrfs_free_space_ctl *ctl = root->free_ino_ctl; struct btrfs_free_space_ctl *pinned = root->free_ino_pinned; if (!btrfs_test_opt(root, INODE_MAP_CACHE)) return; - again: if (root->cached == BTRFS_CACHE_FINISHED) { - __btrfs_add_free_space(ctl, objectid, 1); + __btrfs_add_free_space(pinned, objectid, 1); } else { - /* - * If we are in the process of caching free ino chunks, - * to avoid adding the same inode number to the free_ino - * tree twice due to cross transaction, we'll leave it - * in the pinned tree until a transaction is committed - * or the caching work is done. - */ - down_write(&root->fs_info->commit_root_sem); spin_lock(&root->cache_lock); if (root->cached == BTRFS_CACHE_FINISHED) { @@ -238,11 +228,7 @@ again: start_caching(root); - if (objectid <= root->cache_progress || - objectid >= root->highest_objectid) - __btrfs_add_free_space(ctl, objectid, 1); - else - __btrfs_add_free_space(pinned, objectid, 1); + __btrfs_add_free_space(pinned, objectid, 1); up_write(&root->fs_info->commit_root_sem); } From 9ce49a0b4ff7f13961d8d106ffae959823d2e758 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Thu, 24 Apr 2014 15:15:28 +0100 Subject: [PATCH 358/623] Btrfs: use correct key when repeating search for extent item If skinny metadata is enabled and our first tree search fails to find a skinny extent item, we may repeat a tree search for a "fat" extent item (if the previous item in the leaf is not the "fat" extent we're looking for). However we were not setting the new key's objectid to the right value, as we previously used the same key variable to peek at the previous item in the leaf, which has a different objectid. So just set the right objectid to avoid modifying/deleting a wrong item if we repeat the tree search. Signed-off-by: Filipe David Borba Manana Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 1306487c82cf..678cb352902c 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1542,6 +1542,7 @@ again: ret = 0; } if (ret) { + key.objectid = bytenr; key.type = BTRFS_EXTENT_ITEM_KEY; key.offset = num_bytes; btrfs_release_path(path); @@ -5719,6 +5720,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, if (ret > 0 && skinny_metadata) { skinny_metadata = false; + key.objectid = bytenr; key.type = BTRFS_EXTENT_ITEM_KEY; key.offset = num_bytes; btrfs_release_path(path); From f8213bdc89719bad895a02c62c4a85066ff76720 Mon Sep 17 00:00:00 2001 From: Filipe Manana Date: Thu, 24 Apr 2014 15:15:29 +0100 Subject: [PATCH 359/623] Btrfs: correctly set profile flags on seqlock retry If we had to retry on the profiles seqlock (due to a concurrent write), we would set bits on the input flags that corresponded both to the current profile and to previous values of the profile. Signed-off-by: Filipe David Borba Manana Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 678cb352902c..5590af92094b 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3543,11 +3543,13 @@ static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) return extended_to_chunk(flags | tmp); } -static u64 get_alloc_profile(struct btrfs_root *root, u64 flags) +static u64 get_alloc_profile(struct btrfs_root *root, u64 orig_flags) { unsigned seq; + u64 flags; do { + flags = orig_flags; seq = read_seqbegin(&root->fs_info->profiles_lock); if (flags & BTRFS_BLOCK_GROUP_DATA) From 8c7ae357cc5b6bd037ad2d666e9f3789cf882925 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Wed, 23 Apr 2014 15:07:57 +0530 Subject: [PATCH 360/623] ath9k: fix race in setting ATH_OP_INVALID The commit "ath9k: move sc_flags to ath_common" moved setting ATH_OP_INVALID flag below ieee80211_register_hw. This is causing the flag never being cleared randomly as the drv_start is called prior to setting flag. Fix this by setting the flag prior to register_hw. Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ahb.c | 4 ---- drivers/net/wireless/ath/ath9k/init.c | 3 +++ drivers/net/wireless/ath/ath9k/pci.c | 5 ----- 3 files changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c index a0398fe3eb28..be3eb2a8d602 100644 --- a/drivers/net/wireless/ath/ath9k/ahb.c +++ b/drivers/net/wireless/ath/ath9k/ahb.c @@ -86,7 +86,6 @@ static int ath_ahb_probe(struct platform_device *pdev) int irq; int ret = 0; struct ath_hw *ah; - struct ath_common *common; char hw_name[64]; if (!dev_get_platdata(&pdev->dev)) { @@ -146,9 +145,6 @@ static int ath_ahb_probe(struct platform_device *pdev) wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", hw_name, (unsigned long)mem, irq); - common = ath9k_hw_common(sc->sc_ah); - /* Will be cleared in ath9k_start() */ - set_bit(ATH_OP_INVALID, &common->op_flags); return 0; err_irq: diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index cbbb02a6b13b..36ae6490e554 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -783,6 +783,9 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc, common = ath9k_hw_common(ah); ath9k_set_hw_capab(sc, hw); + /* Will be cleared in ath9k_start() */ + set_bit(ATH_OP_INVALID, &common->op_flags); + /* Initialize regulatory */ error = ath_regd_init(&common->regulatory, sc->hw->wiphy, ath9k_reg_notifier); diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c index 25304adece57..914dbc6b1720 100644 --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -784,7 +784,6 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct ath_softc *sc; struct ieee80211_hw *hw; - struct ath_common *common; u8 csz; u32 val; int ret = 0; @@ -877,10 +876,6 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n", hw_name, (unsigned long)sc->mem, pdev->irq); - /* Will be cleared in ath9k_start() */ - common = ath9k_hw_common(sc->sc_ah); - set_bit(ATH_OP_INVALID, &common->op_flags); - return 0; err_init: From ffa216bb5eecfce0f01b0b2a95d5c320dde90005 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 23 Apr 2014 12:20:55 +0200 Subject: [PATCH 361/623] brcmfmac: Fix brcmf_chip_ai_coredisable not applying reset bits to BCMA_IOCTL brcmfmac has been broken on my cubietruck with a BCM43362: brcmfmac: brcmf_chip_recognition: found AXI chip: BCM43362, rev=1 brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Apr 22 2013 14:50:00 version 5.90.195.89.6 FWID 01-b30a427d since commit 53036261033: "brcmfmac: update core reset and disable routines". The problem is that since this commit brcmf_chip_ai_resetcore no longer sets BCMA_IOCTL itself before bringing the core out of reset, instead relying on brcmf_chip_ai_coredisable to do so. But brcmf_chip_ai_coredisable is a nop of the chip is already in reset. This patch modifies brcmf_chip_ai_coredisable to always set BCMA_IOCTL even if the core is already in reset. This fixes brcmfmac hanging in firmware loading on my board. Cc: stable@vger.kernel.org # v3.14 Signed-off-by: Hans de Goede Acked-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/chip.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/chip.c b/drivers/net/wireless/brcm80211/brcmfmac/chip.c index df130ef53d1c..c7c9f15c0fe0 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/chip.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/chip.c @@ -303,10 +303,10 @@ static void brcmf_chip_ai_coredisable(struct brcmf_core_priv *core, ci = core->chip; - /* if core is already in reset, just return */ + /* if core is already in reset, skip reset */ regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL); if ((regdata & BCMA_RESET_CTL_RESET) != 0) - return; + goto in_reset_configure; /* configure reset */ ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL, @@ -322,6 +322,7 @@ static void brcmf_chip_ai_coredisable(struct brcmf_core_priv *core, SPINWAIT(ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL) != BCMA_RESET_CTL_RESET, 300); +in_reset_configure: /* in-reset configure */ ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL, reset | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK); From 3c49aa852e00978ba2f1a4d1e4598a0c669a5347 Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Tue, 22 Apr 2014 14:04:16 -0700 Subject: [PATCH 362/623] Revert "Bluetooth: Enable autosuspend for Intel Bluetooth device" This reverts commit d2bee8fb6e18f6116aada39851918473761f7ab1. Enabling autosuspend for Intel Bluetooth devices has been shown to not work reliable. It does work for some people with certain combinations of USB host controllers, but for others it puts the device to sleep and it will not wake up for any event. These events can be important ones like HCI Inquiry Complete or HCI Connection Request. The events will arrive as soon as you poke the device with a new command, but that is not something we can do in these cases. Initially there were patches to the xHCI USB controller that fixed this for some people, but not for all. This could be well a problem somewhere in the USB subsystem or in the USB host controllers or just plain a hardware issue somewhere. At this moment we just do not know and the only safe action is to revert this patch. Signed-off-by: Marcel Holtmann Cc: Tedd Ho-Jeong An Cc: stable@vger.kernel.org Signed-off-by: Gustavo Padovan --- drivers/bluetooth/btusb.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index f338b0c5a8de..dc99eff2a4de 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1485,10 +1485,8 @@ static int btusb_probe(struct usb_interface *intf, if (id->driver_info & BTUSB_BCM92035) hdev->setup = btusb_setup_bcm92035; - if (id->driver_info & BTUSB_INTEL) { - usb_enable_autosuspend(data->udev); + if (id->driver_info & BTUSB_INTEL) hdev->setup = btusb_setup_intel; - } /* Interface numbers are hardcoded in the specification */ data->isoc = usb_ifnum_to_if(data->udev, 1); From 9eb1fbfa0a737fd4d3a6d12d71c5ea9af622b887 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Fri, 11 Apr 2014 12:02:31 -0700 Subject: [PATCH 363/623] Bluetooth: Fix triggering BR/EDR L2CAP Connect too early Commit 1c2e004183178 introduced an event handler for the encryption key refresh complete event with the intent of fixing some LE/SMP cases. However, this event is shared with BR/EDR and there we actually want to act only on the auth_complete event (which comes after the key refresh). If we do not do this we may trigger an L2CAP Connect Request too early and cause the remote side to return a security block error. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann Cc: stable@vger.kernel.org --- net/bluetooth/hci_event.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 49774912cb01..15010a230b6d 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3330,6 +3330,12 @@ static void hci_key_refresh_complete_evt(struct hci_dev *hdev, if (!conn) goto unlock; + /* For BR/EDR the necessary steps are taken through the + * auth_complete event. + */ + if (conn->type != LE_LINK) + goto unlock; + if (!ev->status) conn->sec_level = conn->pending_sec_level; From 09da1f3463eb81d59685df723b1c5950b7570340 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Fri, 11 Apr 2014 12:02:32 -0700 Subject: [PATCH 364/623] Bluetooth: Fix redundant encryption request for reauthentication When we're performing reauthentication (in order to elevate the security level from an unauthenticated key to an authenticated one) we do not need to issue any encryption command once authentication completes. Since the trigger for the encryption HCI command is the ENCRYPT_PEND flag this flag should not be set in this scenario. Instead, the REAUTH_PEND flag takes care of all necessary steps for reauthentication. Signed-off-by: Johan Hedberg Signed-off-by: Marcel Holtmann Cc: stable@vger.kernel.org --- net/bluetooth/hci_conn.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index d958e2dca52f..521fd4f3985e 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -819,14 +819,17 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { struct hci_cp_auth_requested cp; - /* encrypt must be pending if auth is also pending */ - set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); - cp.handle = cpu_to_le16(conn->handle); hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); + + /* If we're already encrypted set the REAUTH_PEND flag, + * otherwise set the ENCRYPT_PEND. + */ if (conn->key_type != 0xff) set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); + else + set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); } return 0; From 1fb4e09a7e780b915dbd172592ae7e2a4c071065 Mon Sep 17 00:00:00 2001 From: Mohammed Habibulla Date: Thu, 17 Apr 2014 11:37:13 -0700 Subject: [PATCH 365/623] Bluetooth: Add support for Lite-on [04ca:3007] Add support for the AR9462 chip T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=03 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04ca ProdID=3007 Rev= 0.01 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms Signed-off-by: Mohammed Habibulla Cc: stable@vger.kernel.org Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index be571fef185d..a83b57e57b63 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -82,6 +82,7 @@ static const struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x04CA, 0x3004) }, { USB_DEVICE(0x04CA, 0x3005) }, { USB_DEVICE(0x04CA, 0x3006) }, + { USB_DEVICE(0x04CA, 0x3007) }, { USB_DEVICE(0x04CA, 0x3008) }, { USB_DEVICE(0x04CA, 0x300b) }, { USB_DEVICE(0x0930, 0x0219) }, @@ -131,6 +132,7 @@ static const struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index dc99eff2a4de..a7dfbf9a3afb 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -152,6 +152,7 @@ static const struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, From c2f07fe64dc0da6d4ccc02d858695356bd685aeb Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 24 Apr 2014 22:54:58 +0100 Subject: [PATCH 366/623] ARM: 8038/1: iwmmxt: explicitly check for supported architectures iwmmxt.S requires special treatment of coprocessor access registers for PJ4 and XScale-based CPUs. It only checks for CPU_PJ4 and drops down to XScale-based treatment on all other architectures. As some PJ4B also come with iWMMXt and also need PJ4 treatment, rework the corresponding preprocessor directives to explicitly check for supported architectures and fail on unsupported ones. Signed-off-by: Sebastian Hesselbarth Tested-by: Thomas Petazzoni Tested-by: Kevin Hilman Signed-off-by: Russell King --- arch/arm/kernel/iwmmxt.S | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/iwmmxt.S b/arch/arm/kernel/iwmmxt.S index a08783823b32..2452dd1bef53 100644 --- a/arch/arm/kernel/iwmmxt.S +++ b/arch/arm/kernel/iwmmxt.S @@ -19,12 +19,16 @@ #include #include -#if defined(CONFIG_CPU_PJ4) +#if defined(CONFIG_CPU_PJ4) || defined(CONFIG_CPU_PJ4B) #define PJ4(code...) code #define XSC(code...) -#else +#elif defined(CONFIG_CPU_MOHAWK) || \ + defined(CONFIG_CPU_XSC3) || \ + defined(CONFIG_CPU_XSCALE) #define PJ4(code...) #define XSC(code...) code +#else +#error "Unsupported iWMMXt architecture" #endif #define MMX_WR0 (0x00) From 7d0656598924b2781fb96cdff566c9f844643fcd Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 24 Apr 2014 22:56:43 +0100 Subject: [PATCH 367/623] ARM: 8039/1: pj4: enable iWMMXt only if CONFIG_IWMMXT is set This fixes PJ4 coprocessor init to only expose iWMMXt capabilities, if the corresponding kernel support for iWMMXt is enabled. Signed-off-by: Sebastian Hesselbarth Tested-by: Thomas Petazzoni Tested-by: Kevin Hilman Signed-off-by: Russell King --- arch/arm/kernel/pj4-cp0.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/pj4-cp0.c b/arch/arm/kernel/pj4-cp0.c index fc7208636284..12352cd30ab2 100644 --- a/arch/arm/kernel/pj4-cp0.c +++ b/arch/arm/kernel/pj4-cp0.c @@ -45,7 +45,7 @@ static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t) return NOTIFY_DONE; } -static struct notifier_block iwmmxt_notifier_block = { +static struct notifier_block __maybe_unused iwmmxt_notifier_block = { .notifier_call = iwmmxt_do, }; @@ -79,17 +79,21 @@ static void __init pj4_cp_access_write(u32 value) */ static int __init pj4_cp0_init(void) { - u32 cp_access; + u32 __maybe_unused cp_access; if (!cpu_is_pj4()) return 0; +#ifndef CONFIG_IWMMXT + pr_info("PJ4 iWMMXt coprocessor detected, but kernel support is missing.\n"); +#else cp_access = pj4_cp_access_read() & ~0xf; pj4_cp_access_write(cp_access); printk(KERN_INFO "PJ4 iWMMXt coprocessor enabled.\n"); elf_hwcap |= HWCAP_IWMMXT; thread_register_notifier(&iwmmxt_notifier_block); +#endif return 0; } From e89f443b182c7a813a60d85dbf22d090231b5e6b Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 24 Apr 2014 22:57:25 +0100 Subject: [PATCH 368/623] ARM: 8040/1: pj4: properly detect existence of iWMMXt coprocessor commit fdb487f5c961b94486a78fa61fa28b8eff1954ab ("ARM: 8015/1: Add cpu_is_pj4 to distinguish PJ4 because it has some differences with V7") introduced a fix for checking PJ4 cpuid to not use PJ4 specific coprocessor access on non-PJ4 platforms. Unfortunately, this in turn broke Marvell Armada 370/XP, both comprising Marvell PJ4B CPUs without iWMMXt extension. Instead of only checking for cpuid, which may not be sufficient to determine iWMMXt support, the presence of iWMMXt coprocessors can be checked by enabling and reading the Coprocessor ID register (wCID, register 0 of CP1). Therefore this adds an explicit check for the presence and correct wCID value, before enabling iWMMXt capabilities. As a bonus, also print the iWMMXt version of a detected coprocessor. This has been tested to properly detect iWMMXt presence/absence on: - PJ4, CPUID 0x560f5815, wCID 0x56052001: Marvell Dove, iWMMXt v2 - PJ4B, CPUID 0x561f5811: Marvell Armada 370, no iWMMXt - PJ4B, CPUID 0x562f5841, wCID 0x56052001: Marvell Armada 1500, iWMMXt v2 - PJ4B, CPUID 0x562f5842: Marvell Armada XP, no iWMMXt Signed-off-by: Sebastian Hesselbarth Tested-by: Thomas Petazzoni Tested-by: Kevin Hilman Signed-off-by: Russell King --- arch/arm/kernel/pj4-cp0.c | 34 +++++++++++++++++++++++++++++++++- 1 file changed, 33 insertions(+), 1 deletion(-) diff --git a/arch/arm/kernel/pj4-cp0.c b/arch/arm/kernel/pj4-cp0.c index 12352cd30ab2..8153e36b2491 100644 --- a/arch/arm/kernel/pj4-cp0.c +++ b/arch/arm/kernel/pj4-cp0.c @@ -72,6 +72,33 @@ static void __init pj4_cp_access_write(u32 value) : "=r" (temp) : "r" (value)); } +static int __init pj4_get_iwmmxt_version(void) +{ + u32 cp_access, wcid; + + cp_access = pj4_cp_access_read(); + pj4_cp_access_write(cp_access | 0xf); + + /* check if coprocessor 0 and 1 are available */ + if ((pj4_cp_access_read() & 0xf) != 0xf) { + pj4_cp_access_write(cp_access); + return -ENODEV; + } + + /* read iWMMXt coprocessor id register p1, c0 */ + __asm__ __volatile__ ("mrc p1, 0, %0, c0, c0, 0\n" : "=r" (wcid)); + + pj4_cp_access_write(cp_access); + + /* iWMMXt v1 */ + if ((wcid & 0xffffff00) == 0x56051000) + return 1; + /* iWMMXt v2 */ + if ((wcid & 0xffffff00) == 0x56052000) + return 2; + + return -EINVAL; +} /* * Disable CP0/CP1 on boot, and let call_fpe() and the iWMMXt lazy @@ -80,17 +107,22 @@ static void __init pj4_cp_access_write(u32 value) static int __init pj4_cp0_init(void) { u32 __maybe_unused cp_access; + int vers; if (!cpu_is_pj4()) return 0; + vers = pj4_get_iwmmxt_version(); + if (vers < 0) + return 0; + #ifndef CONFIG_IWMMXT pr_info("PJ4 iWMMXt coprocessor detected, but kernel support is missing.\n"); #else cp_access = pj4_cp_access_read() & ~0xf; pj4_cp_access_write(cp_access); - printk(KERN_INFO "PJ4 iWMMXt coprocessor enabled.\n"); + pr_info("PJ4 iWMMXt v%d coprocessor enabled.\n", vers); elf_hwcap |= HWCAP_IWMMXT; thread_register_notifier(&iwmmxt_notifier_block); #endif From cd1711709fe98d3569e7f8215ba31adcfc3686ae Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 24 Apr 2014 22:58:00 +0100 Subject: [PATCH 369/623] ARM: 8041/1: pj4: fix cpu_is_pj4 check Commit fdb487f5c961b94486a78fa61fa28b8eff1954ab ("ARM: 8015/1: Add cpu_is_pj4 to distinguish PJ4 because it has some differences with V7") introduced a cpuid check for Marvell PJ4 processors to fix a regression caused by adding PJ4 based Marvell Dove into multi_v7. Unfortunately, this check is too narrow to catch PJ4 used on Dove itself and breaks iWMMXt support. This patch therefore relaxes the cpuid mask to match both PJ4 and PJ4B. Also, rework the given comment about PJ4/PJ4B modifications to be a little bit more specific about the differences. Signed-off-by: Sebastian Hesselbarth Tested-by: Thomas Petazzoni Tested-by: Kevin Hilman Signed-off-by: Russell King --- arch/arm/include/asm/cputype.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index c651e3b26ec7..4764344367d4 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -222,22 +222,22 @@ static inline int cpu_is_xsc3(void) #endif /* - * Marvell's PJ4 core is based on V7 version. It has some modification - * for coprocessor setting. For this reason, we need a way to distinguish - * it. + * Marvell's PJ4 and PJ4B cores are based on V7 version, + * but require a specical sequence for enabling coprocessors. + * For this reason, we need a way to distinguish them. */ -#ifndef CONFIG_CPU_PJ4 -#define cpu_is_pj4() 0 -#else +#if defined(CONFIG_CPU_PJ4) || defined(CONFIG_CPU_PJ4B) static inline int cpu_is_pj4(void) { unsigned int id; id = read_cpuid_id(); - if ((id & 0xfffffff0) == 0x562f5840) + if ((id & 0xff0fff00) == 0x560f5800) return 1; return 0; } +#else +#define cpu_is_pj4() 0 #endif #endif From d93003e8e4e1fbbc8a06ec561a63f5aa105a4c45 Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Thu, 24 Apr 2014 22:58:30 +0100 Subject: [PATCH 370/623] ARM: 8042/1: iwmmxt: allow to build iWMMXt on Marvell PJ4B Some Marvell PJ4B CPUs also implement iWMMXt extensions. With a proper check for iWMMXt coprocessors now in place, enable it by default on PJ4B. While at it, also allow to manually select the corresponding Kconfig option. Signed-off-by: Sebastian Hesselbarth Tested-by: Thomas Petazzoni Tested-by: Kevin Hilman Signed-off-by: Russell King --- arch/arm/Kconfig | 6 +++--- arch/arm/kernel/Makefile | 1 + 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 53e99eb543d9..767a1aa4a360 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1110,9 +1110,9 @@ config ARM_NR_BANKS default 8 config IWMMXT - bool "Enable iWMMXt support" if !CPU_PJ4 - depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 - default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 + bool "Enable iWMMXt support" + depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_PJ4 || CPU_PJ4B + default y if PXA27x || PXA3xx || ARCH_MMP || CPU_PJ4 || CPU_PJ4B help Enable support for iWMMXt context switching at run time if running on a CPU that supports it. diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index a766bcbaf8ad..040619c32d68 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -79,6 +79,7 @@ obj-$(CONFIG_CPU_XSCALE) += xscale-cp0.o obj-$(CONFIG_CPU_XSC3) += xscale-cp0.o obj-$(CONFIG_CPU_MOHAWK) += xscale-cp0.o obj-$(CONFIG_CPU_PJ4) += pj4-cp0.o +obj-$(CONFIG_CPU_PJ4B) += pj4-cp0.o obj-$(CONFIG_IWMMXT) += iwmmxt.o obj-$(CONFIG_PERF_EVENTS) += perf_regs.o obj-$(CONFIG_HW_PERF_EVENTS) += perf_event.o perf_event_cpu.o From 6e0de817594c61f3b392a9245deeb09609ec707d Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Fri, 25 Apr 2014 10:53:44 +0200 Subject: [PATCH 371/623] s390/bpf,jit: initialize A register if 1st insn is BPF_S_LDX_B_MSH The A register needs to be initialized to zero in the prolog if the first instruction of the BPF program is BPF_S_LDX_B_MSH to prevent leaking the content of %r5 to user space. Cc: Signed-off-by: Martin Schwidefsky --- arch/s390/net/bpf_jit_comp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 9c36dc398f90..452d3ebd9d0f 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -276,7 +276,6 @@ static void bpf_jit_noleaks(struct bpf_jit *jit, struct sock_filter *filter) case BPF_S_LD_W_IND: case BPF_S_LD_H_IND: case BPF_S_LD_B_IND: - case BPF_S_LDX_B_MSH: case BPF_S_LD_IMM: case BPF_S_LD_MEM: case BPF_S_MISC_TXA: From 1ffa2425bf7cc70f87d5cdbe12175fd4c661dd19 Mon Sep 17 00:00:00 2001 From: Micah Richert Date: Wed, 9 Apr 2014 14:11:31 -0700 Subject: [PATCH 372/623] drm/msm: fix memory leak Signed-off-by: Micah Richert Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 3da8264d3039..bb8026daebc9 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -118,8 +118,10 @@ static void put_pages(struct drm_gem_object *obj) if (iommu_present(&platform_bus_type)) drm_gem_put_pages(obj, msm_obj->pages, true, false); - else + else { drm_mm_remove_node(msm_obj->vram_node); + drm_free_large(msm_obj->pages); + } msm_obj->pages = NULL; } From 96673ecbd7f638c0865045377a44f53cd8606850 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Fri, 25 Apr 2014 08:50:08 -0400 Subject: [PATCH 373/623] drm/msm: default to XR24 rather than AR24 Since X11 is going to create an XR24 fb, if the pixel formats do not match then crtc helpers will think it is a full modeset even if mode is the same, which prevents smooth/flickerless handover from fbcon/plymouth to X11. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_fbdev.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 6c6d7d4c9b4e..a752ab83b810 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -62,11 +62,8 @@ static int msm_fbdev_create(struct drm_fb_helper *helper, dma_addr_t paddr; int ret, size; - /* only doing ARGB32 since this is what is needed to alpha-blend - * with video overlays: - */ sizes->surface_bpp = 32; - sizes->surface_depth = 32; + sizes->surface_depth = 24; DBG("create fbdev: %dx%d@%d (%dx%d)", sizes->surface_width, sizes->surface_height, sizes->surface_bpp, From 7d8d9f670513593377cd1442f987ce03a64ba55d Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 22 Apr 2014 12:27:28 -0400 Subject: [PATCH 374/623] drm/msm/mdp4: cure for the cursor blues (v2) The hw cursor is relatively adept at triggering underflows, which manifest as a "blue flash" (since blue is configured as the underflow color). Juggle a few things around to tighten up the timing for setting cursor registers in DONE irq. And most importantly, don't ever disable the hw cursor. Instead flip it to a blank/empty cursor. This seems far more reliable, as even simply clearing the cursor-enable bit (with no other updates in previous/ following frames) can in some cases cause underflow. v1: original v2: add missing locking spotted by Micah Cc: Micah Richert Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c | 9 +++------ drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c | 4 ++-- drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 21 +++++++++++++++++++++ drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h | 4 ++++ drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c | 4 ++-- 5 files changed, 32 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c index 3e6c0f3ed592..ef9957dbac94 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c @@ -510,9 +510,8 @@ static void update_cursor(struct drm_crtc *crtc) MDP4_DMA_CURSOR_BLEND_CONFIG_CURSOR_EN); } else { /* disable cursor: */ - mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BASE(dma), 0); - mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BLEND_CONFIG(dma), - MDP4_DMA_CURSOR_BLEND_CONFIG_FORMAT(CURSOR_ARGB)); + mdp4_write(mdp4_kms, REG_MDP4_DMA_CURSOR_BASE(dma), + mdp4_kms->blank_cursor_iova); } /* and drop the iova ref + obj rev when done scanning out: */ @@ -574,11 +573,9 @@ static int mdp4_crtc_cursor_set(struct drm_crtc *crtc, if (old_bo) { /* drop our previous reference: */ - msm_gem_put_iova(old_bo, mdp4_kms->id); - drm_gem_object_unreference_unlocked(old_bo); + drm_flip_work_queue(&mdp4_crtc->unref_cursor_work, old_bo); } - crtc_flush(crtc); request_pending(crtc, PENDING_CURSOR); return 0; diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c index c740ccd1cc67..8edd531cb621 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_irq.c @@ -70,12 +70,12 @@ irqreturn_t mdp4_irq(struct msm_kms *kms) VERB("status=%08x", status); + mdp_dispatch_irqs(mdp_kms, status); + for (id = 0; id < priv->num_crtcs; id++) if (status & mdp4_crtc_vblank(priv->crtcs[id])) drm_handle_vblank(dev, id); - mdp_dispatch_irqs(mdp_kms, status); - return IRQ_HANDLED; } diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c index 272e707c9487..0bb4faa17523 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c @@ -144,6 +144,10 @@ static void mdp4_preclose(struct msm_kms *kms, struct drm_file *file) static void mdp4_destroy(struct msm_kms *kms) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); + if (mdp4_kms->blank_cursor_iova) + msm_gem_put_iova(mdp4_kms->blank_cursor_bo, mdp4_kms->id); + if (mdp4_kms->blank_cursor_bo) + drm_gem_object_unreference(mdp4_kms->blank_cursor_bo); kfree(mdp4_kms); } @@ -372,6 +376,23 @@ struct msm_kms *mdp4_kms_init(struct drm_device *dev) goto fail; } + mutex_lock(&dev->struct_mutex); + mdp4_kms->blank_cursor_bo = msm_gem_new(dev, SZ_16K, MSM_BO_WC); + mutex_unlock(&dev->struct_mutex); + if (IS_ERR(mdp4_kms->blank_cursor_bo)) { + ret = PTR_ERR(mdp4_kms->blank_cursor_bo); + dev_err(dev->dev, "could not allocate blank-cursor bo: %d\n", ret); + mdp4_kms->blank_cursor_bo = NULL; + goto fail; + } + + ret = msm_gem_get_iova(mdp4_kms->blank_cursor_bo, mdp4_kms->id, + &mdp4_kms->blank_cursor_iova); + if (ret) { + dev_err(dev->dev, "could not pin blank-cursor bo: %d\n", ret); + goto fail; + } + return kms; fail: diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h index 66a4d31aec80..715520c54cde 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.h @@ -44,6 +44,10 @@ struct mdp4_kms { struct clk *lut_clk; struct mdp_irq error_handler; + + /* empty/blank cursor bo to use when cursor is "disabled" */ + struct drm_gem_object *blank_cursor_bo; + uint32_t blank_cursor_iova; }; #define to_mdp4_kms(x) container_of(x, struct mdp4_kms, base) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c index 353d494a497f..f2b985bc2adf 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_irq.c @@ -71,11 +71,11 @@ static void mdp5_irq_mdp(struct mdp_kms *mdp_kms) VERB("status=%08x", status); + mdp_dispatch_irqs(mdp_kms, status); + for (id = 0; id < priv->num_crtcs; id++) if (status & mdp5_crtc_vblank(priv->crtcs[id])) drm_handle_vblank(dev, id); - - mdp_dispatch_irqs(mdp_kms, status); } irqreturn_t mdp5_irq(struct msm_kms *kms) From 3ff04a160a891e56cdcee5c198d4c764d1c8c78b Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 24 Apr 2014 12:03:17 +0200 Subject: [PATCH 375/623] drm/i915: Don't WARN nor handle unexpected hpd interrupts on gmch platforms The status bits are unconditionally set, the control bits only enable the actual interrupt generation. Which means if we get some random other interrupts we'll bogusly complain about them. So restrict the WARN to platforms with a sane hotplug interrupt handling scheme. And even more important also don't attempt to process the hpd bit since we've detected a storm already. Instead just clear the bit silently. This WARN has been introduced in commit b8f102e8bf71cacf33326360fdf9dcfd1a63925b Author: Egbert Eich Date: Fri Jul 26 14:14:24 2013 +0200 drm/i915: Add messages useful for HPD storm detection debugging (v2) before that we silently handled the hpd event and so partially defeated the storm detection. v2: Pimp commit message (Jani) Cc: Jani Nikula Cc: Egbert Eich Cc: bitlord Reported-by: bitlord Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_irq.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 7753249b3a95..f98ba4e6e70b 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1362,10 +1362,20 @@ static inline void intel_hpd_irq_handler(struct drm_device *dev, spin_lock(&dev_priv->irq_lock); for (i = 1; i < HPD_NUM_PINS; i++) { - WARN_ONCE(hpd[i] & hotplug_trigger && - dev_priv->hpd_stats[i].hpd_mark == HPD_DISABLED, - "Received HPD interrupt (0x%08x) on pin %d (0x%08x) although disabled\n", - hotplug_trigger, i, hpd[i]); + if (hpd[i] & hotplug_trigger && + dev_priv->hpd_stats[i].hpd_mark == HPD_DISABLED) { + /* + * On GMCH platforms the interrupt mask bits only + * prevent irq generation, not the setting of the + * hotplug bits itself. So only WARN about unexpected + * interrupts on saner platforms. + */ + WARN_ONCE(INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev), + "Received HPD interrupt (0x%08x) on pin %d (0x%08x) although disabled\n", + hotplug_trigger, i, hpd[i]); + + continue; + } if (!(hpd[i] & hotplug_trigger) || dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) From 78f2975eec9faff353a6194e854d3d39907bab68 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 2 Apr 2014 16:36:07 +0100 Subject: [PATCH 376/623] drm/i915: Move all ring resets before setting the HWS page In commit a51435a3137ad8ae75c288c39bd2d8b2696bae8f Author: Naresh Kumar Kachhi Date: Wed Mar 12 16:39:40 2014 +0530 drm/i915: disable rings before HW status page setup we reordered stopping the rings to do so before we set the HWS register. However, there is an extra workaround for g45 to reset the rings twice, and for consistency we should apply that workaround before setting the HWS to be sure that the rings are truly stopped. Reference: http://lkml.kernel.org/r/20140423202248.GA3621@amd.pavel.ucw.cz Tested-by: Pavel Machek Cc: Naresh Kumar Kachhi Signed-off-by: Chris Wilson Reviewed-by: Jesse Barnes Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 54 ++++++++++++++++--------- drivers/gpu/drm/i915/intel_ringbuffer.h | 1 + 3 files changed, 36 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9f5b18d9d885..c77af69c2d8f 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -827,6 +827,7 @@ enum punit_power_well { # define MI_FLUSH_ENABLE (1 << 12) # define ASYNC_FLIP_PERF_DISABLE (1 << 14) # define MODE_IDLE (1 << 9) +# define STOP_RING (1 << 8) #define GEN6_GT_MODE 0x20d0 #define GEN7_GT_MODE 0x7008 diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 6bc68bdcf433..79fb4cc2137c 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -437,32 +437,41 @@ static void ring_setup_phys_status_page(struct intel_ring_buffer *ring) I915_WRITE(HWS_PGA, addr); } +static bool stop_ring(struct intel_ring_buffer *ring) +{ + struct drm_i915_private *dev_priv = to_i915(ring->dev); + + if (!IS_GEN2(ring->dev)) { + I915_WRITE_MODE(ring, _MASKED_BIT_ENABLE(STOP_RING)); + if (wait_for_atomic((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) { + DRM_ERROR("%s :timed out trying to stop ring\n", ring->name); + return false; + } + } + + I915_WRITE_CTL(ring, 0); + I915_WRITE_HEAD(ring, 0); + ring->write_tail(ring, 0); + + if (!IS_GEN2(ring->dev)) { + (void)I915_READ_CTL(ring); + I915_WRITE_MODE(ring, _MASKED_BIT_DISABLE(STOP_RING)); + } + + return (I915_READ_HEAD(ring) & HEAD_ADDR) == 0; +} + static int init_ring_common(struct intel_ring_buffer *ring) { struct drm_device *dev = ring->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_gem_object *obj = ring->obj; int ret = 0; - u32 head; gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL); - /* Stop the ring if it's running. */ - I915_WRITE_CTL(ring, 0); - I915_WRITE_HEAD(ring, 0); - ring->write_tail(ring, 0); - if (wait_for_atomic((I915_READ_MODE(ring) & MODE_IDLE) != 0, 1000)) - DRM_ERROR("%s :timed out trying to stop ring\n", ring->name); - - if (I915_NEED_GFX_HWS(dev)) - intel_ring_setup_status_page(ring); - else - ring_setup_phys_status_page(ring); - - head = I915_READ_HEAD(ring) & HEAD_ADDR; - - /* G45 ring initialization fails to reset head to zero */ - if (head != 0) { + if (!stop_ring(ring)) { + /* G45 ring initialization often fails to reset head to zero */ DRM_DEBUG_KMS("%s head not reset to zero " "ctl %08x head %08x tail %08x start %08x\n", ring->name, @@ -471,9 +480,7 @@ static int init_ring_common(struct intel_ring_buffer *ring) I915_READ_TAIL(ring), I915_READ_START(ring)); - I915_WRITE_HEAD(ring, 0); - - if (I915_READ_HEAD(ring) & HEAD_ADDR) { + if (!stop_ring(ring)) { DRM_ERROR("failed to set %s head to zero " "ctl %08x head %08x tail %08x start %08x\n", ring->name, @@ -481,9 +488,16 @@ static int init_ring_common(struct intel_ring_buffer *ring) I915_READ_HEAD(ring), I915_READ_TAIL(ring), I915_READ_START(ring)); + ret = -EIO; + goto out; } } + if (I915_NEED_GFX_HWS(dev)) + intel_ring_setup_status_page(ring); + else + ring_setup_phys_status_page(ring); + /* Initialize the ring. This must happen _after_ we've cleared the ring * registers with the above sequence (the readback of the HEAD registers * also enforces ordering), otherwise the hw might lose the new ring diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 270a6a973438..2b91c4b4d34b 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -34,6 +34,7 @@ struct intel_hw_status_page { #define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val) #define I915_READ_MODE(ring) I915_READ(RING_MI_MODE((ring)->mmio_base)) +#define I915_WRITE_MODE(ring, val) I915_WRITE(RING_MI_MODE((ring)->mmio_base), val) enum intel_ring_hangcheck_action { HANGCHECK_IDLE = 0, From 2eb835e058c737205d35d9a8791ad27b0f9e89a4 Mon Sep 17 00:00:00 2001 From: Steve Capper Date: Thu, 24 Apr 2014 15:33:21 +0100 Subject: [PATCH 377/623] arm64: mm: Add THP TLB entries to general mmu_gather When arm64 moved over to the core mmu_gather, it lost the logic to flush THP TLB entries (tlb_remove_pmd_tlb_entry was removed and the core implementation only signals that the mmu_gather needs a flush). This patch ensures that tlb_add_flush is called for THP TLB entries. Signed-off-by: Steve Capper Acked-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/tlb.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h index 72cadf52ca80..80e2c08900d6 100644 --- a/arch/arm64/include/asm/tlb.h +++ b/arch/arm64/include/asm/tlb.h @@ -19,6 +19,7 @@ #ifndef __ASM_TLB_H #define __ASM_TLB_H +#define __tlb_remove_pmd_tlb_entry __tlb_remove_pmd_tlb_entry #include @@ -99,5 +100,10 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, } #endif +static inline void __tlb_remove_pmd_tlb_entry(struct mmu_gather *tlb, pmd_t *pmdp, + unsigned long address) +{ + tlb_add_flush(tlb, address); +} #endif From 43683afbcb32f7b7318ac1badd6469d91fe22711 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 17 Apr 2014 12:37:14 +0100 Subject: [PATCH 378/623] arm64: debug: remove noisy, pointless warning Sending a SIGTRAP to a user task after execution of a BRK instruction at EL0 is fundamental to the way in which software breakpoints work and doesn't deserve a warning to be logged in dmesg. Whilst the warning can be justified from EL1, do_debug_exception will already do the right thing, so simply remove the code altogether. Cc: Sandeepa Prabhu Reported-by: Kyrylo Tkachov Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/kernel/debug-monitors.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c index ed3955a95747..a7fb874b595e 100644 --- a/arch/arm64/kernel/debug-monitors.c +++ b/arch/arm64/kernel/debug-monitors.c @@ -318,9 +318,6 @@ static int brk_handler(unsigned long addr, unsigned int esr, if (call_break_hook(regs, esr) == DBG_HOOK_HANDLED) return 0; - pr_warn("unexpected brk exception at %lx, esr=0x%x\n", - (long)instruction_pointer(regs), esr); - if (!user_mode(regs)) return -EFAULT; From 8f0712037b4ed63dfce844939ac9866054f15ca0 Mon Sep 17 00:00:00 2001 From: Leo Yan Date: Wed, 16 Apr 2014 13:26:35 +0100 Subject: [PATCH 379/623] arm64: initialize spinlock for init_mm's context ARM64 has defined the spinlock for init_mm's context, so need initialize the spinlock structure; otherwise during the suspend flow it will dump the info for spinlock's bad magic warning as below: [ 39.084394] Disabling non-boot CPUs ... [ 39.092871] BUG: spinlock bad magic on CPU#1, swapper/1/0 [ 39.092896] lock: init_mm+0x338/0x3e0, .magic: 00000000, .owner: /-1, .owner_cpu: 0 [ 39.092907] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G O 3.10.33 #125 [ 39.092912] Call trace: [ 39.092927] [] dump_backtrace+0x0/0x16c [ 39.092934] [] show_stack+0x10/0x1c [ 39.092947] [] dump_stack+0x1c/0x28 [ 39.092953] [] spin_dump+0x78/0x88 [ 39.092960] [] spin_bug+0x24/0x34 [ 39.092971] [] do_raw_spin_lock+0x98/0x17c [ 39.092979] [] _raw_spin_lock_irqsave+0x4c/0x60 [ 39.092990] [] set_mm_context+0x1c/0x6c [ 39.092996] [] __new_context+0x94/0x10c [ 39.093007] [] idle_task_exit+0x104/0x1b0 [ 39.093014] [] cpu_die+0x14/0x74 [ 39.093021] [] arch_cpu_idle_dead+0x8/0x14 [ 39.093030] [] cpu_startup_entry+0x1ec/0x258 [ 39.093036] [] secondary_start_kernel+0x114/0x124 Signed-off-by: Leo Yan Acked-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/mmu.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h index f600d400c07d..aff0292c8f4d 100644 --- a/arch/arm64/include/asm/mmu.h +++ b/arch/arm64/include/asm/mmu.h @@ -22,6 +22,9 @@ typedef struct { void *vdso; } mm_context_t; +#define INIT_MM_CONTEXT(name) \ + .context.id_lock = __RAW_SPIN_LOCK_UNLOCKED(name.context.id_lock), + #define ASID(mm) ((mm)->context.id & 0xffff) extern void paging_init(void); From 1f81b6d22a5980955b01e08cf27fb745dc9b686f Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Fri, 25 Apr 2014 19:20:13 +0300 Subject: [PATCH 380/623] usb: xhci: Prefer endpoint context dequeue pointer over stopped_trb We have observed a rare cycle state desync bug after Set TR Dequeue Pointer commands on Intel LynxPoint xHCs (resulting in an endpoint that doesn't fetch new TRBs and thus an unresponsive USB device). It always triggers when a previous Set TR Dequeue Pointer command has set the pointer to the final Link TRB of a segment, and then another URB gets enqueued and cancelled again before it can be completed. Further investigation showed that the xHC had returned the Link TRB in the TRB Pointer field of the Transfer Event (CC == Stopped -- Length Invalid), but when xhci_find_new_dequeue_state() later accesses the Endpoint Context's TR Dequeue Pointer field it is set to the first TRB of the next segment. The driver expects those two values to be the same in this situation, and uses the cycle state of the latter together with the address of the former. This should be fine according to the XHCI specification, since the endpoint ring should be stopped when returning the Transfer Event and thus should not advance over the Link TRB before it gets restarted. However, real-world XHCI implementations apparently don't really care that much about these details, so the driver should follow a more defensive approach to try to work around HC spec violations. This patch removes the stopped_trb variable that had been used to store the TRB Pointer from the last Transfer Event of a stopped TRB. Instead, xhci_find_new_dequeue_state() now relies only on the Endpoint Context, requiring a small amount of additional processing to find the virtual address corresponding to the TR Dequeue Pointer. Some other parts of the function were slightly rearranged to better fit into this model. This patch should be backported to kernels as old as 2.6.31 that contain the commit ae636747146ea97efa18e04576acd3416e2514f5 "USB: xhci: URB cancellation support." Signed-off-by: Julius Werner Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 67 +++++++++++++++++------------------- drivers/usb/host/xhci.c | 1 - drivers/usb/host/xhci.h | 2 -- 3 files changed, 31 insertions(+), 39 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 5f926bea5ab1..7a0e3c720c00 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -550,6 +550,7 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, struct xhci_ring *ep_ring; struct xhci_generic_trb *trb; dma_addr_t addr; + u64 hw_dequeue; ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id, ep_index, stream_id); @@ -559,16 +560,6 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, stream_id); return; } - state->new_cycle_state = 0; - xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "Finding segment containing stopped TRB."); - state->new_deq_seg = find_trb_seg(cur_td->start_seg, - dev->eps[ep_index].stopped_trb, - &state->new_cycle_state); - if (!state->new_deq_seg) { - WARN_ON(1); - return; - } /* Dig out the cycle state saved by the xHC during the stop ep cmd */ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, @@ -577,46 +568,57 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci, if (ep->ep_state & EP_HAS_STREAMS) { struct xhci_stream_ctx *ctx = &ep->stream_info->stream_ctx_array[stream_id]; - state->new_cycle_state = 0x1 & le64_to_cpu(ctx->stream_ring); + hw_dequeue = le64_to_cpu(ctx->stream_ring); } else { struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index); - state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq); + hw_dequeue = le64_to_cpu(ep_ctx->deq); } + /* Find virtual address and segment of hardware dequeue pointer */ + state->new_deq_seg = ep_ring->deq_seg; + state->new_deq_ptr = ep_ring->dequeue; + while (xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr) + != (dma_addr_t)(hw_dequeue & ~0xf)) { + next_trb(xhci, ep_ring, &state->new_deq_seg, + &state->new_deq_ptr); + if (state->new_deq_ptr == ep_ring->dequeue) { + WARN_ON(1); + return; + } + } + /* + * Find cycle state for last_trb, starting at old cycle state of + * hw_dequeue. If there is only one segment ring, find_trb_seg() will + * return immediately and cannot toggle the cycle state if this search + * wraps around, so add one more toggle manually in that case. + */ + state->new_cycle_state = hw_dequeue & 0x1; + if (ep_ring->first_seg == ep_ring->first_seg->next && + cur_td->last_trb < state->new_deq_ptr) + state->new_cycle_state ^= 0x1; + state->new_deq_ptr = cur_td->last_trb; xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Finding segment containing last TRB in TD."); state->new_deq_seg = find_trb_seg(state->new_deq_seg, - state->new_deq_ptr, - &state->new_cycle_state); + state->new_deq_ptr, &state->new_cycle_state); if (!state->new_deq_seg) { WARN_ON(1); return; } + /* Increment to find next TRB after last_trb. Cycle if appropriate. */ trb = &state->new_deq_ptr->generic; if (TRB_TYPE_LINK_LE32(trb->field[3]) && (trb->field[3] & cpu_to_le32(LINK_TOGGLE))) state->new_cycle_state ^= 0x1; next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr); - /* - * If there is only one segment in a ring, find_trb_seg()'s while loop - * will not run, and it will return before it has a chance to see if it - * needs to toggle the cycle bit. It can't tell if the stalled transfer - * ended just before the link TRB on a one-segment ring, or if the TD - * wrapped around the top of the ring, because it doesn't have the TD in - * question. Look for the one-segment case where stalled TRB's address - * is greater than the new dequeue pointer address. - */ - if (ep_ring->first_seg == ep_ring->first_seg->next && - state->new_deq_ptr < dev->eps[ep_index].stopped_trb) - state->new_cycle_state ^= 0x1; + /* Don't update the ring cycle state for the producer (us). */ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "Cycle state = 0x%x", state->new_cycle_state); - /* Don't update the ring cycle state for the producer (us). */ xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "New dequeue segment = %p (virtual)", state->new_deq_seg); @@ -799,7 +801,6 @@ static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, if (list_empty(&ep->cancelled_td_list)) { xhci_stop_watchdog_timer_in_irq(xhci, ep); ep->stopped_td = NULL; - ep->stopped_trb = NULL; ring_doorbell_for_active_rings(xhci, slot_id, ep_index); return; } @@ -867,11 +868,9 @@ remove_finished_td: ring_doorbell_for_active_rings(xhci, slot_id, ep_index); } - /* Clear stopped_td and stopped_trb if endpoint is not halted */ - if (!(ep->ep_state & EP_HALTED)) { + /* Clear stopped_td if endpoint is not halted */ + if (!(ep->ep_state & EP_HALTED)) ep->stopped_td = NULL; - ep->stopped_trb = NULL; - } /* * Drop the lock and complete the URBs in the cancelled TD list. @@ -1941,14 +1940,12 @@ static void xhci_cleanup_halted_endpoint(struct xhci_hcd *xhci, struct xhci_virt_ep *ep = &xhci->devs[slot_id]->eps[ep_index]; ep->ep_state |= EP_HALTED; ep->stopped_td = td; - ep->stopped_trb = event_trb; ep->stopped_stream = stream_id; xhci_queue_reset_ep(xhci, slot_id, ep_index); xhci_cleanup_stalled_ring(xhci, td->urb->dev, ep_index); ep->stopped_td = NULL; - ep->stopped_trb = NULL; ep->stopped_stream = 0; xhci_ring_cmd_db(xhci); @@ -2030,7 +2027,6 @@ static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td, * the ring dequeue pointer or take this TD off any lists yet. */ ep->stopped_td = td; - ep->stopped_trb = event_trb; return 0; } else { if (trb_comp_code == COMP_STALL) { @@ -2042,7 +2038,6 @@ static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td, * USB class driver clear the stall later. */ ep->stopped_td = td; - ep->stopped_trb = event_trb; ep->stopped_stream = ep_ring->stream_id; } else if (xhci_requires_manual_halt_cleanup(xhci, ep_ctx, trb_comp_code)) { diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 8fe4e124ddd4..988ed5f1cb2c 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -2954,7 +2954,6 @@ void xhci_endpoint_reset(struct usb_hcd *hcd, xhci_ring_cmd_db(xhci); } virt_ep->stopped_td = NULL; - virt_ep->stopped_trb = NULL; virt_ep->stopped_stream = 0; spin_unlock_irqrestore(&xhci->lock, flags); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index d280e9213d08..4746816aed3e 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -865,8 +865,6 @@ struct xhci_virt_ep { #define EP_GETTING_NO_STREAMS (1 << 5) /* ---- Related to URB cancellation ---- */ struct list_head cancelled_td_list; - /* The TRB that was last reported in a stopped endpoint ring */ - union xhci_trb *stopped_trb; struct xhci_td *stopped_td; unsigned int stopped_stream; /* Watchdog timer for stop endpoint command to cancel URBs */ From c09ec25d3684cad74d851c0f028a495999591279 Mon Sep 17 00:00:00 2001 From: Denis Turischev Date: Fri, 25 Apr 2014 19:20:14 +0300 Subject: [PATCH 381/623] xhci: Switch Intel Lynx Point ports to EHCI on shutdown. The same issue like with Panther Point chipsets. If the USB ports are switched to xHCI on shutdown, the xHCI host will send a spurious interrupt, which will wake the system. Some BIOS have work around for this, but not all. One example is Compulab's mini-desktop, the Intense-PC2. The bug can be avoided if the USB ports are switched back to EHCI on shutdown. This patch should be backported to stable kernels as old as 3.12, that contain the commit 638298dc66ea36623dbc2757a24fc2c4ab41b016 "xhci: Fix spurious wakeups after S5 on Haswell" Signed-off-by: Denis Turischev Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 47390e369cd4..1715063630bd 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -134,6 +134,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) */ if (pdev->subsystem_vendor == PCI_VENDOR_ID_HP) xhci->quirks |= XHCI_SPURIOUS_WAKEUP; + + xhci->quirks |= XHCI_SPURIOUS_REBOOT; } if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_ASROCK_P67) { From 6db249ebefc6bf5c39f35dfaacc046d8ad3ffd70 Mon Sep 17 00:00:00 2001 From: Igor Gnatenko Date: Fri, 25 Apr 2014 19:20:15 +0300 Subject: [PATCH 382/623] xhci: extend quirk for Renesas cards After suspend another Renesas PCI-X USB 3.0 card doesn't work. [root@fedora-20 ~]# lspci -vmnnd 1912: Device: 03:00.0 Class: USB controller [0c03] Vendor: Renesas Technology Corp. [1912] Device: uPD720202 USB 3.0 Host Controller [0015] SVendor: Renesas Technology Corp. [1912] SDevice: uPD720202 USB 3.0 Host Controller [0015] Rev: 02 ProgIf: 30 This patch should be applied to stable kernel 3.14 that contain the commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d "xhci: Fix resume issues on Renesas chips in Samsung laptops" Reported-and-tested-by: Anatoly Kharchenko Reference: http://redmine.russianfedora.pro/issues/1315 Signed-off-by: Igor Gnatenko Cc: stable@vger.kernel.org # 3.14 Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-pci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 1715063630bd..35d447780707 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -145,9 +145,7 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) xhci->quirks |= XHCI_TRUST_TX_LENGTH; } if (pdev->vendor == PCI_VENDOR_ID_RENESAS && - pdev->device == 0x0015 && - pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG && - pdev->subsystem_device == 0xc0cd) + pdev->device == 0x0015) xhci->quirks |= XHCI_RESET_ON_RESUME; if (pdev->vendor == PCI_VENDOR_ID_VIA) xhci->quirks |= XHCI_RESET_ON_RESUME; From 01bb59ebffdec314da8da66266edf29529372f9b Mon Sep 17 00:00:00 2001 From: David Cohen Date: Fri, 25 Apr 2014 19:20:16 +0300 Subject: [PATCH 383/623] usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When CONFIG_PCI and CONFIG_PM are not selected, xhci.c gets this warning: drivers/usb/host/xhci.c:409:13: warning: ‘xhci_msix_sync_irqs’ defined but not used [-Wunused-function] Instead of creating nested #ifdefs, this patch fixes it by defining the xHCI PCI stubs as inline. This warning has been in since 3.2 kernel and was caused by commit 421aa841a134f6a743111cf44d0c6d3b45e3cf8c "usb/xhci: hide MSI code behind PCI bars", but wasn't noticed until 3.13 when a configuration with these options was tried Signed-off-by: David Cohen Cc: stable@vger.kernel.org # 3.2 Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 988ed5f1cb2c..300836972faa 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -408,16 +408,16 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd) #else -static int xhci_try_enable_msi(struct usb_hcd *hcd) +static inline int xhci_try_enable_msi(struct usb_hcd *hcd) { return 0; } -static void xhci_cleanup_msix(struct xhci_hcd *xhci) +static inline void xhci_cleanup_msix(struct xhci_hcd *xhci) { } -static void xhci_msix_sync_irqs(struct xhci_hcd *xhci) +static inline void xhci_msix_sync_irqs(struct xhci_hcd *xhci) { } From 5509076d1b4485ce9fb07705fcbcd2695907ab5b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 25 Apr 2014 15:23:03 +0200 Subject: [PATCH 384/623] USB: io_ti: fix firmware download on big-endian machines During firmware download the device expects memory addresses in big-endian byte order. As the wIndex parameter which hold the address is sent in little-endian byte order regardless of host byte order, we need to use swab16 rather than cpu_to_be16. Also make sure to handle the struct ti_i2c_desc size parameter which is returned in little-endian byte order. Reported-by: Ludovic Drolez Tested-by: Ludovic Drolez Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 50 +++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 17 deletions(-) diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index a2db5be9c305..df90dae53eb9 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -280,7 +281,7 @@ static int read_download_mem(struct usb_device *dev, int start_address, { int status = 0; __u8 read_length; - __be16 be_start_address; + u16 be_start_address; dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); @@ -296,10 +297,14 @@ static int read_download_mem(struct usb_device *dev, int start_address, if (read_length > 1) { dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); } - be_start_address = cpu_to_be16(start_address); + /* + * NOTE: Must use swab as wIndex is sent in little-endian + * byte order regardless of host byte order. + */ + be_start_address = swab16((u16)start_address); status = ti_vread_sync(dev, UMPC_MEMORY_READ, (__u16)address_type, - (__force __u16)be_start_address, + be_start_address, buffer, read_length); if (status) { @@ -394,7 +399,7 @@ static int write_i2c_mem(struct edgeport_serial *serial, struct device *dev = &serial->serial->dev->dev; int status = 0; int write_length; - __be16 be_start_address; + u16 be_start_address; /* We can only send a maximum of 1 aligned byte page at a time */ @@ -409,11 +414,16 @@ static int write_i2c_mem(struct edgeport_serial *serial, __func__, start_address, write_length); usb_serial_debug_data(dev, __func__, write_length, buffer); - /* Write first page */ - be_start_address = cpu_to_be16(start_address); + /* + * Write first page. + * + * NOTE: Must use swab as wIndex is sent in little-endian byte order + * regardless of host byte order. + */ + be_start_address = swab16((u16)start_address); status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, (__u16)address_type, - (__force __u16)be_start_address, + be_start_address, buffer, write_length); if (status) { dev_dbg(dev, "%s - ERROR %d\n", __func__, status); @@ -436,11 +446,16 @@ static int write_i2c_mem(struct edgeport_serial *serial, __func__, start_address, write_length); usb_serial_debug_data(dev, __func__, write_length, buffer); - /* Write next page */ - be_start_address = cpu_to_be16(start_address); + /* + * Write next page. + * + * NOTE: Must use swab as wIndex is sent in little-endian byte + * order regardless of host byte order. + */ + be_start_address = swab16((u16)start_address); status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, (__u16)address_type, - (__force __u16)be_start_address, + be_start_address, buffer, write_length); if (status) { dev_err(dev, "%s - ERROR %d\n", __func__, status); @@ -585,8 +600,8 @@ static int get_descriptor_addr(struct edgeport_serial *serial, if (rom_desc->Type == desc_type) return start_address; - start_address = start_address + sizeof(struct ti_i2c_desc) - + rom_desc->Size; + start_address = start_address + sizeof(struct ti_i2c_desc) + + le16_to_cpu(rom_desc->Size); } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); @@ -599,7 +614,7 @@ static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) __u16 i; __u8 cs = 0; - for (i = 0; i < rom_desc->Size; i++) + for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) cs = (__u8)(cs + buffer[i]); if (cs != rom_desc->CheckSum) { @@ -650,7 +665,7 @@ static int check_i2c_image(struct edgeport_serial *serial) break; if ((start_address + sizeof(struct ti_i2c_desc) + - rom_desc->Size) > TI_MAX_I2C_SIZE) { + le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { status = -ENODEV; dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); break; @@ -665,7 +680,8 @@ static int check_i2c_image(struct edgeport_serial *serial) /* Read the descriptor data */ status = read_rom(serial, start_address + sizeof(struct ti_i2c_desc), - rom_desc->Size, buffer); + le16_to_cpu(rom_desc->Size), + buffer); if (status) break; @@ -674,7 +690,7 @@ static int check_i2c_image(struct edgeport_serial *serial) break; } start_address = start_address + sizeof(struct ti_i2c_desc) + - rom_desc->Size; + le16_to_cpu(rom_desc->Size); } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE)); @@ -712,7 +728,7 @@ static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) /* Read the descriptor data */ status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), - rom_desc->Size, buffer); + le16_to_cpu(rom_desc->Size), buffer); if (status) goto exit; From bc3ee18a7a57243721ecfd879319e3d2e882f289 Mon Sep 17 00:00:00 2001 From: Chanho Min Date: Mon, 14 Apr 2014 08:38:53 +0100 Subject: [PATCH 385/623] arm64: init: Move of_clk_init to time_init Clock providers should be initialized before clocksource_of_init. If not, Clock source initialization can be fail to get the clock. Acked-by: Will Deacon Signed-off-by: Chanho Min Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/kernel/setup.c | 1 - arch/arm64/kernel/time.c | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 720853f70b6b..93e7df8968fe 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -393,7 +393,6 @@ void __init setup_arch(char **cmdline_p) static int __init arm64_device_init(void) { - of_clk_init(NULL); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); return 0; } diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c index 29c39d5d77e3..6815987b50f8 100644 --- a/arch/arm64/kernel/time.c +++ b/arch/arm64/kernel/time.c @@ -33,6 +33,7 @@ #include #include #include +#include #include @@ -65,6 +66,7 @@ void __init time_init(void) { u32 arch_timer_rate; + of_clk_init(NULL); clocksource_of_init(); arch_timer_rate = arch_timer_get_rate(); From a00986f81182a69dee4d2c48e8c19805bdf0f790 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:15 +0200 Subject: [PATCH 386/623] usb: qcserial: add Sierra Wireless EM7355 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 968a40201e5f..662235240f3f 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -139,6 +139,9 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 0)}, /* Sierra Wireless EM7355 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 2)}, /* Sierra Wireless EM7355 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 3)}, /* Sierra Wireless EM7355 Modem */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 0)}, /* Netgear AirCard 340U Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 2)}, /* Netgear AirCard 340U NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 3)}, /* Netgear AirCard 340U Modem */ From 70a3615fc07c2330ed7c1e922f3c44f4a67c0762 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:16 +0200 Subject: [PATCH 387/623] usb: qcserial: add Sierra Wireless MC73xx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 662235240f3f..1d1bc9b41337 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -136,6 +136,9 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 0)}, /* Sierra Wireless MC7710 Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 2)}, /* Sierra Wireless MC7710 NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68a2, 3)}, /* Sierra Wireless MC7710 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 0)}, /* Sierra Wireless MC73xx Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 2)}, /* Sierra Wireless MC73xx NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x68c0, 3)}, /* Sierra Wireless MC73xx Modem */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 0)}, /* Sierra Wireless EM7700 Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 2)}, /* Sierra Wireless EM7700 NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901c, 3)}, /* Sierra Wireless EM7700 Modem */ From bce4f588f19d59fc07fadfeb0b2a3a06c942827a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:17 +0200 Subject: [PATCH 388/623] usb: qcserial: add Sierra Wireless MC7305/MC7355 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 1d1bc9b41337..7ed681a714a5 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -145,6 +145,9 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 0)}, /* Sierra Wireless EM7355 Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 2)}, /* Sierra Wireless EM7355 NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x901f, 3)}, /* Sierra Wireless EM7355 Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 0)}, /* Sierra Wireless MC7305/MC7355 Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 2)}, /* Sierra Wireless MC7305/MC7355 NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9041, 3)}, /* Sierra Wireless MC7305/MC7355 Modem */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 0)}, /* Netgear AirCard 340U Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 2)}, /* Netgear AirCard 340U NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 3)}, /* Netgear AirCard 340U Modem */ From 533b3994610f316e5cd61b56d0c4daa15c830f89 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:18 +0200 Subject: [PATCH 389/623] usb: option: add Olivetti Olicard 500 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Device interface layout: 0: ff/ff/ff - serial 1: ff/ff/ff - serial AT+PPP 2: 08/06/50 - storage 3: ff/ff/ff - serial 4: ff/ff/ff - QMI/wwan Cc: Reported-by: Julio Araujo Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 367c7f08b27c..6335222cb892 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -349,6 +349,7 @@ static void option_instat_callback(struct urb *urb); #define OLIVETTI_PRODUCT_OLICARD100 0xc000 #define OLIVETTI_PRODUCT_OLICARD145 0xc003 #define OLIVETTI_PRODUCT_OLICARD200 0xc005 +#define OLIVETTI_PRODUCT_OLICARD500 0xc00b /* Celot products */ #define CELOT_VENDOR_ID 0x211f @@ -1545,6 +1546,9 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD200), .driver_info = (kernel_ulong_t)&net_intf6_blacklist }, + { USB_DEVICE(OLIVETTI_VENDOR_ID, OLIVETTI_PRODUCT_OLICARD500), + .driver_info = (kernel_ulong_t)&net_intf4_blacklist + }, { USB_DEVICE(CELOT_VENDOR_ID, CELOT_PRODUCT_CT680M) }, /* CT-650 CDMA 450 1xEVDO modem */ { USB_DEVICE_AND_INTERFACE_INFO(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_GT_B3730, USB_CLASS_CDC_DATA, 0x00, 0x00) }, /* Samsung GT-B3730 LTE USB modem.*/ { USB_DEVICE(YUGA_VENDOR_ID, YUGA_PRODUCT_CEM600) }, From dd6b48ecec2ea7d15f28d5e5474388681899a5e1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:19 +0200 Subject: [PATCH 390/623] usb: option: add Alcatel L800MA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Device interface layout: 0: ff/ff/ff - serial 1: ff/00/00 - serial AT+PPP 2: ff/ff/ff - QMI/wwan 3: 08/06/50 - storage Cc: Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 6335222cb892..776c86f3c091 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -287,6 +287,7 @@ static void option_instat_callback(struct urb *urb); #define ALCATEL_PRODUCT_X060S_X200 0x0000 #define ALCATEL_PRODUCT_X220_X500D 0x0017 #define ALCATEL_PRODUCT_L100V 0x011e +#define ALCATEL_PRODUCT_L800MA 0x0203 #define PIRELLI_VENDOR_ID 0x1266 #define PIRELLI_PRODUCT_C100_1 0x1002 @@ -1501,6 +1502,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_L100V), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_L800MA), + .driver_info = (kernel_ulong_t)&net_intf2_blacklist }, { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) }, { USB_DEVICE(TLAYTECH_VENDOR_ID, TLAYTECH_PRODUCT_TEU800) }, { USB_DEVICE(LONGCHEER_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14), From 34f972d6156fe9eea2ab7bb418c71f9d1d5c8e7b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 18:49:20 +0200 Subject: [PATCH 391/623] usb: option: add and update a number of CMOTech devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A number of older CMOTech modems are based on Qualcomm chips. The blacklisted interfaces are QMI/wwan. Reported-by: Lars Melin Cc: Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 74 +++++++++++++++++++++++++++++++++++-- 1 file changed, 70 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 776c86f3c091..f213ee978516 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -234,8 +234,31 @@ static void option_instat_callback(struct urb *urb); #define QUALCOMM_VENDOR_ID 0x05C6 #define CMOTECH_VENDOR_ID 0x16d8 -#define CMOTECH_PRODUCT_6008 0x6008 -#define CMOTECH_PRODUCT_6280 0x6280 +#define CMOTECH_PRODUCT_6001 0x6001 +#define CMOTECH_PRODUCT_CMU_300 0x6002 +#define CMOTECH_PRODUCT_6003 0x6003 +#define CMOTECH_PRODUCT_6004 0x6004 +#define CMOTECH_PRODUCT_6005 0x6005 +#define CMOTECH_PRODUCT_CGU_628A 0x6006 +#define CMOTECH_PRODUCT_CHE_628S 0x6007 +#define CMOTECH_PRODUCT_CMU_301 0x6008 +#define CMOTECH_PRODUCT_CHU_628 0x6280 +#define CMOTECH_PRODUCT_CHU_628S 0x6281 +#define CMOTECH_PRODUCT_CDU_680 0x6803 +#define CMOTECH_PRODUCT_CDU_685A 0x6804 +#define CMOTECH_PRODUCT_CHU_720S 0x7001 +#define CMOTECH_PRODUCT_7002 0x7002 +#define CMOTECH_PRODUCT_CHU_629K 0x7003 +#define CMOTECH_PRODUCT_7004 0x7004 +#define CMOTECH_PRODUCT_7005 0x7005 +#define CMOTECH_PRODUCT_CGU_629 0x7006 +#define CMOTECH_PRODUCT_CHU_629S 0x700a +#define CMOTECH_PRODUCT_CHU_720I 0x7211 +#define CMOTECH_PRODUCT_7212 0x7212 +#define CMOTECH_PRODUCT_7213 0x7213 +#define CMOTECH_PRODUCT_7251 0x7251 +#define CMOTECH_PRODUCT_7252 0x7252 +#define CMOTECH_PRODUCT_7253 0x7253 #define TELIT_VENDOR_ID 0x1bc7 #define TELIT_PRODUCT_UC864E 0x1003 @@ -504,6 +527,10 @@ static const struct option_blacklist_info huawei_cdc12_blacklist = { .reserved = BIT(1) | BIT(2), }; +static const struct option_blacklist_info net_intf0_blacklist = { + .reserved = BIT(0), +}; + static const struct option_blacklist_info net_intf1_blacklist = { .reserved = BIT(1), }; @@ -1037,8 +1064,47 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */ - { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6280) }, /* BP3-USB & BP3-EXT HSDPA */ - { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6008) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6001) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_300) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6003), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6004) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_6005) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CGU_628A) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHE_628S), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CMU_301), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_628), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_628S) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDU_680) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CDU_685A) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_720S), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7002), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_629K), + .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7004), + .driver_info = (kernel_ulong_t)&net_intf3_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7005) }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CGU_629), + .driver_info = (kernel_ulong_t)&net_intf5_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_629S), + .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_CHU_720I), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7212), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7213), + .driver_info = (kernel_ulong_t)&net_intf0_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7251), + .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7252), + .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, + { USB_DEVICE(CMOTECH_VENDOR_ID, CMOTECH_PRODUCT_7253), + .driver_info = (kernel_ulong_t)&net_intf1_blacklist }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864G) }, { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_CC864_DUAL) }, From c1befb885939cdaaf420c10bbe9ff57aa00446ea Mon Sep 17 00:00:00 2001 From: Jianyu Zhan Date: Thu, 17 Apr 2014 17:52:10 +0800 Subject: [PATCH 392/623] kernfs: fix a subdir count leak Currently kernfs_link_sibling() increates parent->dir.subdirs before adding the node into parent's chidren rb tree. Because it is possible that kernfs_link_sibling() couldn't find a suitable slot and bail out, this leads to a mismatch between elevated subdir count with actual children node numbers. This patches fix this problem, by moving the subdir accouting after the actual addtion happening. Signed-off-by: Jianyu Zhan Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- fs/kernfs/dir.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 78f3403300af..ac127cd008bf 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -232,9 +232,6 @@ static int kernfs_link_sibling(struct kernfs_node *kn) struct rb_node **node = &kn->parent->dir.children.rb_node; struct rb_node *parent = NULL; - if (kernfs_type(kn) == KERNFS_DIR) - kn->parent->dir.subdirs++; - while (*node) { struct kernfs_node *pos; int result; @@ -249,9 +246,15 @@ static int kernfs_link_sibling(struct kernfs_node *kn) else return -EEXIST; } + /* add new node and rebalance the tree */ rb_link_node(&kn->rb, parent, node); rb_insert_color(&kn->rb, &kn->parent->dir.children); + + /* successfully added, account subdir number */ + if (kernfs_type(kn) == KERNFS_DIR) + kn->parent->dir.subdirs++; + return 0; } From b44b2140265ddfde03acbe809336111d31adb0d1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 20 Apr 2014 08:29:21 -0400 Subject: [PATCH 393/623] kernfs: add back missing error check in kernfs_fop_mmap() While updating how mmap enabled kernfs files are handled by lockdep, 9b2db6e18945 ("sysfs: bail early from kernfs_file_mmap() to avoid spurious lockdep warning") inadvertently dropped error return check from kernfs_file_mmap(). The intention was just dropping "if (ops->mmap)" check as the control won't reach the point if the mmap callback isn't implemented, but I mistakenly removed the error return check together with it. This led to Xorg crash on i810 which was reported and bisected to the commit and then to the specific change by Tobias. Signed-off-by: Tejun Heo Reported-and-bisected-by: Tobias Powalowski Tested-by: Tobias Powalowski References: http://lkml.kernel.org/g/533D01BD.1010200@googlemail.com Cc: stable # 3.14 Signed-off-by: Greg Kroah-Hartman --- fs/kernfs/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index 8034706a7af8..e01ea4a14a01 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -484,6 +484,8 @@ static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma) ops = kernfs_ops(of->kn); rc = ops->mmap(of, vma); + if (rc) + goto out_put; /* * PowerPC's pci_mmap of legacy_mem uses shmem_zero_setup() From 0c8c77d35582c3f7989f1316368da5ae7f14ad4b Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Wed, 23 Apr 2014 20:58:45 +0200 Subject: [PATCH 394/623] s390/ccwgroup: Fix memory corruption commit 0b60f9ead5d4816e7e3d6e28f4a0d22d4a1b2513 (s390: use device_remove_file_self() instead of device_schedule_callback()) caused random memory corruption on my s390 box. Turns out that the last element of the ccwgroup structure is of dynamic size, so we must move the newly introduced work structure _before_ the zero length array. Signed-off-by: Christian Borntraeger CC: Tejun Heo CC: Martin Schwidefsky CC: Heiko Carstens CC: Sebastian Ott CC: Peter Oberparleiter Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- arch/s390/include/asm/ccwgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index 6e670f88d125..ebc2913f9ee0 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -22,8 +22,8 @@ struct ccwgroup_device { /* public: */ unsigned int count; struct device dev; - struct ccw_device *cdev[0]; struct work_struct ungroup_work; + struct ccw_device *cdev[0]; }; /** From 1cf35d47712dd5dc4d62c6ce984f04ac6eab0408 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 25 Apr 2014 16:05:40 -0700 Subject: [PATCH 395/623] mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts The mmu-gather operation 'tlb_flush_mmu()' has done two things: the actual tlb flush operation, and the batched freeing of the pages that the TLB entries pointed at. This splits the operation into separate phases, so that the forced batched flushing done by zap_pte_range() can now do the actual TLB flush while still holding the page table lock, but delay the batched freeing of all the pages to after the lock has been dropped. This in turn allows us to avoid a race condition between set_page_dirty() (as called by zap_pte_range() when it finds a dirty shared memory pte) and page_mkclean(): because we now flush all the dirty page data from the TLB's while holding the pte lock, page_mkclean() will be held up walking the (recently cleaned) page tables until after the TLB entries have been flushed from all CPU's. Reported-by: Benjamin Herrenschmidt Tested-by: Dave Hansen Acked-by: Hugh Dickins Cc: Peter Zijlstra Cc: Russell King - ARM Linux Cc: Tony Luck Signed-off-by: Linus Torvalds --- arch/arm/include/asm/tlb.h | 12 ++++++++- arch/ia64/include/asm/tlb.h | 42 ++++++++++++++++++++++------- arch/s390/include/asm/tlb.h | 13 ++++++++- arch/sh/include/asm/tlb.h | 8 ++++++ arch/um/include/asm/tlb.h | 16 +++++++++-- mm/memory.c | 53 ++++++++++++++++++++++++------------- 6 files changed, 111 insertions(+), 33 deletions(-) diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 0baf7f0d9394..f1a0dace3efe 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -98,15 +98,25 @@ static inline void __tlb_alloc_page(struct mmu_gather *tlb) } } -static inline void tlb_flush_mmu(struct mmu_gather *tlb) +static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) { tlb_flush(tlb); +} + +static inline void tlb_flush_mmu_free(struct mmu_gather *tlb) +{ free_pages_and_swap_cache(tlb->pages, tlb->nr); tlb->nr = 0; if (tlb->pages == tlb->local) __tlb_alloc_page(tlb); } +static inline void tlb_flush_mmu(struct mmu_gather *tlb) +{ + tlb_flush_mmu_tlbonly(tlb); + tlb_flush_mmu_free(tlb); +} + static inline void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start, unsigned long end) { diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h index bc5efc7c3f3f..39d64e0df1de 100644 --- a/arch/ia64/include/asm/tlb.h +++ b/arch/ia64/include/asm/tlb.h @@ -91,18 +91,9 @@ extern struct ia64_tr_entry *ia64_idtrs[NR_CPUS]; #define RR_RID_MASK 0x00000000ffffff00L #define RR_TO_RID(val) ((val >> 8) & 0xffffff) -/* - * Flush the TLB for address range START to END and, if not in fast mode, release the - * freed pages that where gathered up to this point. - */ static inline void -ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end) +ia64_tlb_flush_mmu_tlbonly(struct mmu_gather *tlb, unsigned long start, unsigned long end) { - unsigned long i; - unsigned int nr; - - if (!tlb->need_flush) - return; tlb->need_flush = 0; if (tlb->fullmm) { @@ -135,6 +126,14 @@ ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long e flush_tlb_range(&vma, ia64_thash(start), ia64_thash(end)); } +} + +static inline void +ia64_tlb_flush_mmu_free(struct mmu_gather *tlb) +{ + unsigned long i; + unsigned int nr; + /* lastly, release the freed pages */ nr = tlb->nr; @@ -144,6 +143,19 @@ ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long e free_page_and_swap_cache(tlb->pages[i]); } +/* + * Flush the TLB for address range START to END and, if not in fast mode, release the + * freed pages that where gathered up to this point. + */ +static inline void +ia64_tlb_flush_mmu (struct mmu_gather *tlb, unsigned long start, unsigned long end) +{ + if (!tlb->need_flush) + return; + ia64_tlb_flush_mmu_tlbonly(tlb, start, end); + ia64_tlb_flush_mmu_free(tlb); +} + static inline void __tlb_alloc_page(struct mmu_gather *tlb) { unsigned long addr = __get_free_pages(GFP_NOWAIT | __GFP_NOWARN, 0); @@ -206,6 +218,16 @@ static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) return tlb->max - tlb->nr; } +static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) +{ + ia64_tlb_flush_mmu_tlbonly(tlb, tlb->start_addr, tlb->end_addr); +} + +static inline void tlb_flush_mmu_free(struct mmu_gather *tlb) +{ + ia64_tlb_flush_mmu_free(tlb); +} + static inline void tlb_flush_mmu(struct mmu_gather *tlb) { ia64_tlb_flush_mmu(tlb, tlb->start_addr, tlb->end_addr); diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h index c544b6f05d95..a25f09fbaf36 100644 --- a/arch/s390/include/asm/tlb.h +++ b/arch/s390/include/asm/tlb.h @@ -59,12 +59,23 @@ static inline void tlb_gather_mmu(struct mmu_gather *tlb, tlb->batch = NULL; } -static inline void tlb_flush_mmu(struct mmu_gather *tlb) +static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) { __tlb_flush_mm_lazy(tlb->mm); +} + +static inline void tlb_flush_mmu_free(struct mmu_gather *tlb) +{ tlb_table_flush(tlb); } + +static inline void tlb_flush_mmu(struct mmu_gather *tlb) +{ + tlb_flush_mmu_tlbonly(tlb); + tlb_flush_mmu_free(tlb); +} + static inline void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) { diff --git a/arch/sh/include/asm/tlb.h b/arch/sh/include/asm/tlb.h index 362192ed12fe..62f80d2a9df9 100644 --- a/arch/sh/include/asm/tlb.h +++ b/arch/sh/include/asm/tlb.h @@ -86,6 +86,14 @@ tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma) } } +static inline void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) +{ +} + +static inline void tlb_flush_mmu_free(struct mmu_gather *tlb) +{ +} + static inline void tlb_flush_mmu(struct mmu_gather *tlb) { } diff --git a/arch/um/include/asm/tlb.h b/arch/um/include/asm/tlb.h index 29b0301c18aa..16eb63fac57d 100644 --- a/arch/um/include/asm/tlb.h +++ b/arch/um/include/asm/tlb.h @@ -58,14 +58,26 @@ tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start extern void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, unsigned long end); +static inline void +tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) +{ + flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end); +} + +static inline void +tlb_flush_mmu_free(struct mmu_gather *tlb) +{ + init_tlb_gather(tlb); +} + static inline void tlb_flush_mmu(struct mmu_gather *tlb) { if (!tlb->need_flush) return; - flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end); - init_tlb_gather(tlb); + tlb_flush_mmu_tlbonly(tlb); + tlb_flush_mmu_free(tlb); } /* tlb_finish_mmu diff --git a/mm/memory.c b/mm/memory.c index 93e332d5ed77..037b812a9531 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -232,17 +232,18 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long #endif } -void tlb_flush_mmu(struct mmu_gather *tlb) +static void tlb_flush_mmu_tlbonly(struct mmu_gather *tlb) { - struct mmu_gather_batch *batch; - - if (!tlb->need_flush) - return; tlb->need_flush = 0; tlb_flush(tlb); #ifdef CONFIG_HAVE_RCU_TABLE_FREE tlb_table_flush(tlb); #endif +} + +static void tlb_flush_mmu_free(struct mmu_gather *tlb) +{ + struct mmu_gather_batch *batch; for (batch = &tlb->local; batch; batch = batch->next) { free_pages_and_swap_cache(batch->pages, batch->nr); @@ -251,6 +252,14 @@ void tlb_flush_mmu(struct mmu_gather *tlb) tlb->active = &tlb->local; } +void tlb_flush_mmu(struct mmu_gather *tlb) +{ + if (!tlb->need_flush) + return; + tlb_flush_mmu_tlbonly(tlb); + tlb_flush_mmu_free(tlb); +} + /* tlb_finish_mmu * Called at the end of the shootdown operation to free up any resources * that were required. @@ -1127,8 +1136,10 @@ again: if (PageAnon(page)) rss[MM_ANONPAGES]--; else { - if (pte_dirty(ptent)) + if (pte_dirty(ptent)) { + force_flush = 1; set_page_dirty(page); + } if (pte_young(ptent) && likely(!(vma->vm_flags & VM_SEQ_READ))) mark_page_accessed(page); @@ -1137,9 +1148,10 @@ again: page_remove_rmap(page); if (unlikely(page_mapcount(page) < 0)) print_bad_pte(vma, addr, ptent, page); - force_flush = !__tlb_remove_page(tlb, page); - if (force_flush) + if (unlikely(!__tlb_remove_page(tlb, page))) { + force_flush = 1; break; + } continue; } /* @@ -1174,18 +1186,11 @@ again: add_mm_rss_vec(mm, rss); arch_leave_lazy_mmu_mode(); - pte_unmap_unlock(start_pte, ptl); - /* - * mmu_gather ran out of room to batch pages, we break out of - * the PTE lock to avoid doing the potential expensive TLB invalidate - * and page-free while holding it. - */ + /* Do the actual TLB flush before dropping ptl */ if (force_flush) { unsigned long old_end; - force_flush = 0; - /* * Flush the TLB just for the previous segment, * then update the range to be the remaining @@ -1193,11 +1198,21 @@ again: */ old_end = tlb->end; tlb->end = addr; - - tlb_flush_mmu(tlb); - + tlb_flush_mmu_tlbonly(tlb); tlb->start = addr; tlb->end = old_end; + } + pte_unmap_unlock(start_pte, ptl); + + /* + * If we forced a TLB flush (either due to running out of + * batch buffers or because we needed to flush dirty TLB + * entries before releasing the ptl), free the batched + * memory too. Restart if we didn't do everything. + */ + if (force_flush) { + force_flush = 0; + tlb_flush_mmu_free(tlb); if (addr != end) goto again; From c60e5760b0a62b072ba00ac07643d9b6fb29f2b4 Mon Sep 17 00:00:00 2001 From: Jimmy Li Date: Fri, 25 Apr 2014 03:52:00 +0100 Subject: [PATCH 396/623] staging:iio:ad2s1200 fix missing parenthesis in a for statment. Signed-off-by: Jimmy Li Signed-off-by: Jonathan Cameron --- drivers/staging/iio/resolver/ad2s1200.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/iio/resolver/ad2s1200.c b/drivers/staging/iio/resolver/ad2s1200.c index e2b482045158..017d2f8379b7 100644 --- a/drivers/staging/iio/resolver/ad2s1200.c +++ b/drivers/staging/iio/resolver/ad2s1200.c @@ -107,7 +107,7 @@ static int ad2s1200_probe(struct spi_device *spi) int pn, ret = 0; unsigned short *pins = spi->dev.platform_data; - for (pn = 0; pn < AD2S1200_PN; pn++) + for (pn = 0; pn < AD2S1200_PN; pn++) { ret = devm_gpio_request_one(&spi->dev, pins[pn], GPIOF_DIR_OUT, DRV_NAME); if (ret) { @@ -115,6 +115,7 @@ static int ad2s1200_probe(struct spi_device *spi) pins[pn]); return ret; } + } indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st)); if (!indio_dev) return -ENOMEM; From b9b3a41893c3f1be67b5aacfa525969914bea0e9 Mon Sep 17 00:00:00 2001 From: Atilla Filiz Date: Fri, 11 Apr 2014 16:51:23 +0200 Subject: [PATCH 397/623] iio:imu:mpu6050: Fixed segfault in Invensens MPU driver due to null dereference The driver segfaults when the kernel boots with device tree as the platform data is then not present and the pointer is deferenced without checking it is not null. This patch introduces such a check avoiding the crash. Signed-off-by: Atilla Filiz Signed-off-by: Jonathan Cameron Cc: Stable@vger.kernel.org --- drivers/iio/imu/inv_mpu6050/inv_mpu_core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c index cb9f96b446a5..d8ad606c7cd0 100644 --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c @@ -660,6 +660,7 @@ static int inv_mpu_probe(struct i2c_client *client, { struct inv_mpu6050_state *st; struct iio_dev *indio_dev; + struct inv_mpu6050_platform_data *pdata; int result; if (!i2c_check_functionality(client->adapter, @@ -672,8 +673,10 @@ static int inv_mpu_probe(struct i2c_client *client, st = iio_priv(indio_dev); st->client = client; - st->plat_data = *(struct inv_mpu6050_platform_data - *)dev_get_platdata(&client->dev); + pdata = (struct inv_mpu6050_platform_data + *)dev_get_platdata(&client->dev); + if (pdata) + st->plat_data = *pdata; /* power is turned on inside check chip type*/ result = inv_check_and_setup_chip(st, id); if (result) From 3d821a1747a0abbb7a179af10188ad7ad9b35b72 Mon Sep 17 00:00:00 2001 From: Naveen Krishna Ch Date: Fri, 25 Apr 2014 11:14:00 +0100 Subject: [PATCH 398/623] iio: exynos_adc: use indio_dev->dev structure to handle child nodes Using pdev->dev with device_for_each_child() would iterate over all of the children of the platform device and delete them. Thus, causing crashes during module unload. We should be using the indio_dev->dev structure for registering/unregistering child nodes. Reported-by: Doug Anderson Signed-off-by: Naveen Krishna Ch Reviewed-by: Doug Anderson Tested-by: Doug Anderson Signed-off-by: Jonathan Cameron --- drivers/iio/adc/exynos_adc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c index d25b262193a7..affa93f51789 100644 --- a/drivers/iio/adc/exynos_adc.c +++ b/drivers/iio/adc/exynos_adc.c @@ -344,7 +344,7 @@ static int exynos_adc_probe(struct platform_device *pdev) exynos_adc_hw_init(info); - ret = of_platform_populate(np, exynos_adc_match, NULL, &pdev->dev); + ret = of_platform_populate(np, exynos_adc_match, NULL, &indio_dev->dev); if (ret < 0) { dev_err(&pdev->dev, "failed adding child nodes\n"); goto err_of_populate; @@ -353,7 +353,7 @@ static int exynos_adc_probe(struct platform_device *pdev) return 0; err_of_populate: - device_for_each_child(&pdev->dev, NULL, + device_for_each_child(&indio_dev->dev, NULL, exynos_adc_remove_devices); regulator_disable(info->vdd); clk_disable_unprepare(info->clk); @@ -369,7 +369,7 @@ static int exynos_adc_remove(struct platform_device *pdev) struct iio_dev *indio_dev = platform_get_drvdata(pdev); struct exynos_adc *info = iio_priv(indio_dev); - device_for_each_child(&pdev->dev, NULL, + device_for_each_child(&indio_dev->dev, NULL, exynos_adc_remove_devices); regulator_disable(info->vdd); clk_disable_unprepare(info->clk); From bbc28134e915d2e2e8cac0254d1d056db0ae3247 Mon Sep 17 00:00:00 2001 From: Doug Anderson Date: Tue, 22 Apr 2014 01:03:00 +0100 Subject: [PATCH 399/623] iio: adc: Nothing in ADC should be a bool CONFIG The whole IIO subsystem can be built as modules. If you make it a module then stuff marked as "Y" in the adc directory simply won't be linked in properly. The two configs that were wrong were EXYNOS_ADC and LP8788_ADC. I know for a fact that EXYNOS_ADC will work as a module. I assume LP8788_ADC will also be fine. Signed-off-by: Doug Anderson Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index d86196cfe4b4..24c28e3f93a3 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -106,7 +106,7 @@ config AT91_ADC Say yes here to build support for Atmel AT91 ADC. config EXYNOS_ADC - bool "Exynos ADC driver support" + tristate "Exynos ADC driver support" depends on OF help Core support for the ADC block found in the Samsung EXYNOS series @@ -114,7 +114,7 @@ config EXYNOS_ADC this resource. config LP8788_ADC - bool "LP8788 ADC driver" + tristate "LP8788 ADC driver" depends on MFD_LP8788 help Say yes here to build support for TI LP8788 ADC. From 4e4468fac4381b92eb333d94256e7fb8350f3de3 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 25 Apr 2014 11:46:04 +0100 Subject: [PATCH 400/623] ARM: KVM: disable KVM in Kconfig on big-endian systems KVM currently crashes and burns on big-endian hosts, so don't allow it to be selected until we've got that fixed. Cc: Marc Zyngier Signed-off-by: Will Deacon Signed-off-by: Christoffer Dall --- arch/arm/kvm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index 466bd299b1a8..4be5bb150bdd 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -23,7 +23,7 @@ config KVM select HAVE_KVM_CPU_RELAX_INTERCEPT select KVM_MMIO select KVM_ARM_HOST - depends on ARM_VIRT_EXT && ARM_LPAE + depends on ARM_VIRT_EXT && ARM_LPAE && !CPU_BIG_ENDIAN ---help--- Support hosting virtualized guest machines. You will also need to select one or more of the processor modules below. From cfd4a535b68faf651b238586011f5bae128391c4 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Sat, 26 Apr 2014 05:02:03 -0700 Subject: [PATCH 401/623] Btrfs: limit the path size in send to PATH_MAX fs_path_ensure_buf is used to make sure our path buffers for send are big enough for the path names as we construct them. The buffer size is limited to 32K by the length field in the struct. But bugs in the path construction can end up trying to build a huge buffer, and we'll do invalid memmmoves when the buffer length field wraps. This patch is step one, preventing the overflows. Signed-off-by: Chris Mason --- fs/btrfs/send.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 1ac3ca98c429..eb6537a08c1b 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -349,6 +349,11 @@ static int fs_path_ensure_buf(struct fs_path *p, int len) if (p->buf_len >= len) return 0; + if (len > PATH_MAX) { + WARN_ON(1); + return -ENOMEM; + } + path_len = p->end - p->start; old_buf_len = p->buf_len; From e2a367f8e3c2afd5cfd5f0892844c74960ecc031 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Thu, 24 Apr 2014 19:29:52 +0300 Subject: [PATCH 402/623] bnx2x: Memory leak during VF removal When removing a VF interface, the driver fails to release that VF's mailbox and bulletin board allocated memory. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 2 ++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 13 +++++++++---- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h | 2 ++ 3 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index a78edaccceee..b260913db236 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -13233,6 +13233,8 @@ static void __bnx2x_remove(struct pci_dev *pdev, iounmap(bp->doorbells); bnx2x_release_firmware(bp); + } else { + bnx2x_vf_pci_dealloc(bp); } bnx2x_free_mem_bp(bp); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index 5c523b32db70..046c9cca0072 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -2896,6 +2896,14 @@ void __iomem *bnx2x_vf_doorbells(struct bnx2x *bp) return bp->regview + PXP_VF_ADDR_DB_START; } +void bnx2x_vf_pci_dealloc(struct bnx2x *bp) +{ + BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->vf2pf_mbox_mapping, + sizeof(struct bnx2x_vf_mbx_msg)); + BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->pf2vf_bulletin_mapping, + sizeof(union pf_vf_bulletin)); +} + int bnx2x_vf_pci_alloc(struct bnx2x *bp) { mutex_init(&bp->vf2pf_mutex); @@ -2915,10 +2923,7 @@ int bnx2x_vf_pci_alloc(struct bnx2x *bp) return 0; alloc_mem_err: - BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->vf2pf_mbox_mapping, - sizeof(struct bnx2x_vf_mbx_msg)); - BNX2X_PCI_FREE(bp->vf2pf_mbox, bp->pf2vf_bulletin_mapping, - sizeof(union pf_vf_bulletin)); + bnx2x_vf_pci_dealloc(bp); return -ENOMEM; } diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h index 8bf764570eef..bb16c4b5c2af 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h @@ -502,6 +502,7 @@ static inline int bnx2x_vf_ustorm_prods_offset(struct bnx2x *bp, enum sample_bulletin_result bnx2x_sample_bulletin(struct bnx2x *bp); void bnx2x_timer_sriov(struct bnx2x *bp); void __iomem *bnx2x_vf_doorbells(struct bnx2x *bp); +void bnx2x_vf_pci_dealloc(struct bnx2x *bp); int bnx2x_vf_pci_alloc(struct bnx2x *bp); int bnx2x_enable_sriov(struct bnx2x *bp); void bnx2x_disable_sriov(struct bnx2x *bp); @@ -568,6 +569,7 @@ static inline void __iomem *bnx2x_vf_doorbells(struct bnx2x *bp) return NULL; } +static inline void bnx2x_vf_pci_dealloc(struct bnx2 *bp) {return 0; } static inline int bnx2x_vf_pci_alloc(struct bnx2x *bp) {return 0; } static inline void bnx2x_pf_set_vfs_vlan(struct bnx2x *bp) {} static inline int bnx2x_sriov_configure(struct pci_dev *dev, int num_vfs) {return 0; } From 1a3d94240bc5e969e7e8cef661fbad24296ba36f Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Thu, 24 Apr 2014 19:29:53 +0300 Subject: [PATCH 403/623] bnx2x: Fix vlan credit issues for VFs Starting with commit 2dc33bbc "bnx2x: Remove the sriov VFOP mechanism", the bnx2x started enforcing vlan credits for all vlan configurations. This exposed 2 issues: - Vlan credits are not returned once a VF is removed; this causes a leak of credits, and eventually will lead to VFs with no vlan credits. - A vlan credit must be set aside for the Hypervisor to use, and should not be visible to the VF. Although linux VFs at the moment do not support vlan configuration [from the VF side] which causes them to be resilient to this sort of issue, Windows VF over linux hypervisors might fail to load as the vlan credits become depleted. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- .../net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 44 ++++++++++++++----- .../net/ethernet/broadcom/bnx2x/bnx2x_sriov.h | 2 + .../net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c | 2 +- 3 files changed, 37 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index 046c9cca0072..eefe8f528309 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -427,7 +427,9 @@ static int bnx2x_vf_mac_vlan_config(struct bnx2x *bp, if (filter->add && filter->type == BNX2X_VF_FILTER_VLAN && (atomic_read(&bnx2x_vfq(vf, qid, vlan_count)) >= vf_vlan_rules_cnt(vf))) { - BNX2X_ERR("No credits for vlan\n"); + BNX2X_ERR("No credits for vlan [%d >= %d]\n", + atomic_read(&bnx2x_vfq(vf, qid, vlan_count)), + vf_vlan_rules_cnt(vf)); return -ENOMEM; } @@ -837,6 +839,29 @@ int bnx2x_vf_flr_clnup_epilog(struct bnx2x *bp, u8 abs_vfid) return 0; } +static void bnx2x_iov_re_set_vlan_filters(struct bnx2x *bp, + struct bnx2x_virtf *vf, + int new) +{ + int num = vf_vlan_rules_cnt(vf); + int diff = new - num; + bool rc = true; + + DP(BNX2X_MSG_IOV, "vf[%d] - %d vlan filter credits [previously %d]\n", + vf->abs_vfid, new, num); + + if (diff > 0) + rc = bp->vlans_pool.get(&bp->vlans_pool, diff); + else if (diff < 0) + rc = bp->vlans_pool.put(&bp->vlans_pool, -diff); + + if (rc) + vf_vlan_rules_cnt(vf) = new; + else + DP(BNX2X_MSG_IOV, "vf[%d] - Failed to configure vlan filter credits change\n", + vf->abs_vfid); +} + /* must be called after the number of PF queues and the number of VFs are * both known */ @@ -854,9 +879,11 @@ bnx2x_iov_static_resc(struct bnx2x *bp, struct bnx2x_virtf *vf) resc->num_mac_filters = 1; /* divvy up vlan rules */ + bnx2x_iov_re_set_vlan_filters(bp, vf, 0); vlan_count = bp->vlans_pool.check(&bp->vlans_pool); vlan_count = 1 << ilog2(vlan_count); - resc->num_vlan_filters = vlan_count / BNX2X_NR_VIRTFN(bp); + bnx2x_iov_re_set_vlan_filters(bp, vf, + vlan_count / BNX2X_NR_VIRTFN(bp)); /* no real limitation */ resc->num_mc_filters = 0; @@ -1478,10 +1505,6 @@ int bnx2x_iov_nic_init(struct bnx2x *bp) bnx2x_iov_static_resc(bp, vf); /* queues are initialized during VF-ACQUIRE */ - - /* reserve the vf vlan credit */ - bp->vlans_pool.get(&bp->vlans_pool, vf_vlan_rules_cnt(vf)); - vf->filter_state = 0; vf->sp_cl_id = bnx2x_fp(bp, 0, cl_id); @@ -1912,11 +1935,12 @@ int bnx2x_vf_chk_avail_resc(struct bnx2x *bp, struct bnx2x_virtf *vf, u8 rxq_cnt = vf_rxq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf); u8 txq_cnt = vf_txq_count(vf) ? : bnx2x_vf_max_queue_cnt(bp, vf); + /* Save a vlan filter for the Hypervisor */ return ((req_resc->num_rxqs <= rxq_cnt) && (req_resc->num_txqs <= txq_cnt) && (req_resc->num_sbs <= vf_sb_count(vf)) && (req_resc->num_mac_filters <= vf_mac_rules_cnt(vf)) && - (req_resc->num_vlan_filters <= vf_vlan_rules_cnt(vf))); + (req_resc->num_vlan_filters <= vf_vlan_rules_visible_cnt(vf))); } /* CORE VF API */ @@ -1972,14 +1996,14 @@ int bnx2x_vf_acquire(struct bnx2x *bp, struct bnx2x_virtf *vf, vf_txq_count(vf) = resc->num_txqs ? : bnx2x_vf_max_queue_cnt(bp, vf); if (resc->num_mac_filters) vf_mac_rules_cnt(vf) = resc->num_mac_filters; - if (resc->num_vlan_filters) - vf_vlan_rules_cnt(vf) = resc->num_vlan_filters; + /* Add an additional vlan filter credit for the hypervisor */ + bnx2x_iov_re_set_vlan_filters(bp, vf, resc->num_vlan_filters + 1); DP(BNX2X_MSG_IOV, "Fulfilling vf request: sb count %d, tx_count %d, rx_count %d, mac_rules_count %d, vlan_rules_count %d\n", vf_sb_count(vf), vf_rxq_count(vf), vf_txq_count(vf), vf_mac_rules_cnt(vf), - vf_vlan_rules_cnt(vf)); + vf_vlan_rules_visible_cnt(vf)); /* Initialize the queues */ if (!vf->vfqs) { diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h index bb16c4b5c2af..6929adba52f9 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.h @@ -159,6 +159,8 @@ struct bnx2x_virtf { #define vf_mac_rules_cnt(vf) ((vf)->alloc_resc.num_mac_filters) #define vf_vlan_rules_cnt(vf) ((vf)->alloc_resc.num_vlan_filters) #define vf_mc_rules_cnt(vf) ((vf)->alloc_resc.num_mc_filters) + /* Hide a single vlan filter credit for the hypervisor */ +#define vf_vlan_rules_visible_cnt(vf) (vf_vlan_rules_cnt(vf) - 1) u8 sb_count; /* actual number of SBs */ u8 igu_base_id; /* base igu status block id */ diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c index 0622884596b2..0c067e8564dd 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c @@ -1163,7 +1163,7 @@ static void bnx2x_vf_mbx_acquire_resp(struct bnx2x *bp, struct bnx2x_virtf *vf, bnx2x_vf_max_queue_cnt(bp, vf); resc->num_sbs = vf_sb_count(vf); resc->num_mac_filters = vf_mac_rules_cnt(vf); - resc->num_vlan_filters = vf_vlan_rules_cnt(vf); + resc->num_vlan_filters = vf_vlan_rules_visible_cnt(vf); resc->num_mc_filters = 0; if (status == PFVF_STATUS_SUCCESS) { From ab15f86b8d3c3e7a1437010bb57ea543fc422463 Mon Sep 17 00:00:00 2001 From: Narender Kumar Date: Thu, 24 Apr 2014 19:29:54 +0300 Subject: [PATCH 404/623] bnx2x: Fix failure to configure VF multicast filters Commit 2dc33bbc "bnx2x: Remove the sriov VFOP mechanism" caused a regression, preventing VFs from configuring multicast filters. Signed-off-by: Naredner Kumar Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index eefe8f528309..81cc2d9831c2 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -612,6 +612,7 @@ int bnx2x_vf_mcast(struct bnx2x *bp, struct bnx2x_virtf *vf, } /* add new mcasts */ + mcast.mcast_list_len = mc_num; rc = bnx2x_config_mcast(bp, &mcast, BNX2X_MCAST_CMD_ADD); if (rc) BNX2X_ERR("Faled to add multicasts\n"); From 37c0ffaad21401eacc6618a121cc2c501131026f Mon Sep 17 00:00:00 2001 From: Vince Bridgers Date: Thu, 24 Apr 2014 16:58:08 -0500 Subject: [PATCH 405/623] Altera TSE: Work around unaligned DMA receive packet issue with Altera SGDMA This patch works around a recently discovered unaligned receive dma problem with the Altera SGMDA. The Altera SGDMA component cannot be configured to DMA data to unaligned addresses for receive packet operations from the Triple Speed Ethernet component because of a potential data transfer corruption that can occur. This patch addresses this issue by utilizing the shift 16 bits feature of the Altera Triple Speed Ethernet component and modifying the receive buffer physical addresses accordingly such that the target receive DMA address is always aligned on a 32-bit boundary. Signed-off-by: Vince Bridgers Tested-by: Matthew Gerlach Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_msgdma.c | 7 +- drivers/net/ethernet/altera/altera_msgdma.h | 3 +- drivers/net/ethernet/altera/altera_sgdma.c | 105 ++++++++++++------ drivers/net/ethernet/altera/altera_sgdma.h | 3 +- drivers/net/ethernet/altera/altera_tse.h | 4 +- drivers/net/ethernet/altera/altera_tse_main.c | 30 +++-- 6 files changed, 101 insertions(+), 51 deletions(-) diff --git a/drivers/net/ethernet/altera/altera_msgdma.c b/drivers/net/ethernet/altera/altera_msgdma.c index 3df18669ea30..219a8a1e7ba0 100644 --- a/drivers/net/ethernet/altera/altera_msgdma.c +++ b/drivers/net/ethernet/altera/altera_msgdma.c @@ -29,6 +29,10 @@ void msgdma_uninitialize(struct altera_tse_private *priv) { } +void msgdma_start_rxdma(struct altera_tse_private *priv) +{ +} + void msgdma_reset(struct altera_tse_private *priv) { int counter; @@ -154,7 +158,7 @@ u32 msgdma_tx_completions(struct altera_tse_private *priv) /* Put buffer to the mSGDMA RX FIFO */ -int msgdma_add_rx_desc(struct altera_tse_private *priv, +void msgdma_add_rx_desc(struct altera_tse_private *priv, struct tse_buffer *rxbuffer) { struct msgdma_extended_desc *desc = priv->rx_dma_desc; @@ -175,7 +179,6 @@ int msgdma_add_rx_desc(struct altera_tse_private *priv, iowrite32(0, &desc->burst_seq_num); iowrite32(0x00010001, &desc->stride); iowrite32(control, &desc->control); - return 1; } /* status is returned on upper 16 bits, diff --git a/drivers/net/ethernet/altera/altera_msgdma.h b/drivers/net/ethernet/altera/altera_msgdma.h index 7f0f5bf2bba2..42cf61c81057 100644 --- a/drivers/net/ethernet/altera/altera_msgdma.h +++ b/drivers/net/ethernet/altera/altera_msgdma.h @@ -25,10 +25,11 @@ void msgdma_disable_txirq(struct altera_tse_private *); void msgdma_clear_rxirq(struct altera_tse_private *); void msgdma_clear_txirq(struct altera_tse_private *); u32 msgdma_tx_completions(struct altera_tse_private *); -int msgdma_add_rx_desc(struct altera_tse_private *, struct tse_buffer *); +void msgdma_add_rx_desc(struct altera_tse_private *, struct tse_buffer *); int msgdma_tx_buffer(struct altera_tse_private *, struct tse_buffer *); u32 msgdma_rx_status(struct altera_tse_private *); int msgdma_initialize(struct altera_tse_private *); void msgdma_uninitialize(struct altera_tse_private *); +void msgdma_start_rxdma(struct altera_tse_private *); #endif /* __ALTERA_MSGDMA_H__ */ diff --git a/drivers/net/ethernet/altera/altera_sgdma.c b/drivers/net/ethernet/altera/altera_sgdma.c index 0ee96639ae44..4bcdd34f5d24 100644 --- a/drivers/net/ethernet/altera/altera_sgdma.c +++ b/drivers/net/ethernet/altera/altera_sgdma.c @@ -64,11 +64,15 @@ queue_rx_peekhead(struct altera_tse_private *priv); int sgdma_initialize(struct altera_tse_private *priv) { - priv->txctrlreg = SGDMA_CTRLREG_ILASTD; + priv->txctrlreg = SGDMA_CTRLREG_ILASTD | + SGDMA_CTRLREG_INTEN; priv->rxctrlreg = SGDMA_CTRLREG_IDESCRIP | + SGDMA_CTRLREG_INTEN | SGDMA_CTRLREG_ILASTD; + priv->sgdmadesclen = sizeof(sgdma_descrip); + INIT_LIST_HEAD(&priv->txlisthd); INIT_LIST_HEAD(&priv->rxlisthd); @@ -93,6 +97,16 @@ int sgdma_initialize(struct altera_tse_private *priv) return -EINVAL; } + /* Initialize descriptor memory to all 0's, sync memory to cache */ + memset(priv->tx_dma_desc, 0, priv->txdescmem); + memset(priv->rx_dma_desc, 0, priv->rxdescmem); + + dma_sync_single_for_device(priv->device, priv->txdescphys, + priv->txdescmem, DMA_TO_DEVICE); + + dma_sync_single_for_device(priv->device, priv->rxdescphys, + priv->rxdescmem, DMA_TO_DEVICE); + return 0; } @@ -130,26 +144,23 @@ void sgdma_reset(struct altera_tse_private *priv) iowrite32(0, &prxsgdma->control); } +/* For SGDMA, interrupts remain enabled after initially enabling, + * so no need to provide implementations for abstract enable + * and disable + */ + void sgdma_enable_rxirq(struct altera_tse_private *priv) { - struct sgdma_csr *csr = (struct sgdma_csr *)priv->rx_dma_csr; - priv->rxctrlreg |= SGDMA_CTRLREG_INTEN; - tse_set_bit(&csr->control, SGDMA_CTRLREG_INTEN); } void sgdma_enable_txirq(struct altera_tse_private *priv) { - struct sgdma_csr *csr = (struct sgdma_csr *)priv->tx_dma_csr; - priv->txctrlreg |= SGDMA_CTRLREG_INTEN; - tse_set_bit(&csr->control, SGDMA_CTRLREG_INTEN); } -/* for SGDMA, RX interrupts remain enabled after enabling */ void sgdma_disable_rxirq(struct altera_tse_private *priv) { } -/* for SGDMA, TX interrupts remain enabled after enabling */ void sgdma_disable_txirq(struct altera_tse_private *priv) { } @@ -219,11 +230,15 @@ u32 sgdma_tx_completions(struct altera_tse_private *priv) return ready; } -int sgdma_add_rx_desc(struct altera_tse_private *priv, - struct tse_buffer *rxbuffer) +void sgdma_start_rxdma(struct altera_tse_private *priv) +{ + sgdma_async_read(priv); +} + +void sgdma_add_rx_desc(struct altera_tse_private *priv, + struct tse_buffer *rxbuffer) { queue_rx(priv, rxbuffer); - return sgdma_async_read(priv); } /* status is returned on upper 16 bits, @@ -240,28 +255,52 @@ u32 sgdma_rx_status(struct altera_tse_private *priv) unsigned int pktstatus = 0; struct tse_buffer *rxbuffer = NULL; - dma_sync_single_for_cpu(priv->device, - priv->rxdescphys, - priv->rxdescmem, - DMA_BIDIRECTIONAL); + u32 sts = ioread32(&csr->status); desc = &base[0]; - if ((ioread32(&csr->status) & SGDMA_STSREG_EOP) || - (desc->status & SGDMA_STATUS_EOP)) { + if (sts & SGDMA_STSREG_EOP) { + dma_sync_single_for_cpu(priv->device, + priv->rxdescphys, + priv->sgdmadesclen, + DMA_FROM_DEVICE); + pktlength = desc->bytes_xferred; pktstatus = desc->status & 0x3f; rxstatus = pktstatus; rxstatus = rxstatus << 16; rxstatus |= (pktlength & 0xffff); - desc->status = 0; + if (rxstatus) { + desc->status = 0; - rxbuffer = dequeue_rx(priv); - if (rxbuffer == NULL) + rxbuffer = dequeue_rx(priv); + if (rxbuffer == NULL) + netdev_info(priv->dev, + "sgdma rx and rx queue empty!\n"); + + /* Clear control */ + iowrite32(0, &csr->control); + /* clear status */ + iowrite32(0xf, &csr->status); + + /* kick the rx sgdma after reaping this descriptor */ + pktsrx = sgdma_async_read(priv); + + } else { + /* If the SGDMA indicated an end of packet on recv, + * then it's expected that the rxstatus from the + * descriptor is non-zero - meaning a valid packet + * with a nonzero length, or an error has been + * indicated. if not, then all we can do is signal + * an error and return no packet received. Most likely + * there is a system design error, or an error in the + * underlying kernel (cache or cache management problem) + */ netdev_err(priv->dev, - "sgdma rx and rx queue empty!\n"); - - /* kick the rx sgdma after reaping this descriptor */ + "SGDMA RX Error Info: %x, %x, %x\n", + sts, desc->status, rxstatus); + } + } else if (sts == 0) { pktsrx = sgdma_async_read(priv); } @@ -319,13 +358,14 @@ static int sgdma_async_read(struct altera_tse_private *priv) struct sgdma_descrip *cdesc = &descbase[0]; struct sgdma_descrip *ndesc = &descbase[1]; - unsigned int sts = ioread32(&csr->status); struct tse_buffer *rxbuffer = NULL; if (!sgdma_rxbusy(priv)) { rxbuffer = queue_rx_peekhead(priv); - if (rxbuffer == NULL) + if (rxbuffer == NULL) { + netdev_err(priv->dev, "no rx buffers available\n"); return 0; + } sgdma_descrip(cdesc, /* current descriptor */ ndesc, /* next descriptor */ @@ -337,17 +377,10 @@ static int sgdma_async_read(struct altera_tse_private *priv) 0, /* read fixed: NA for rx dma */ 0); /* SOP: NA for rx DMA */ - /* clear control and status */ - iowrite32(0, &csr->control); - - /* If status available, clear those bits */ - if (sts & 0xf) - iowrite32(0xf, &csr->status); - dma_sync_single_for_device(priv->device, priv->rxdescphys, - priv->rxdescmem, - DMA_BIDIRECTIONAL); + priv->sgdmadesclen, + DMA_TO_DEVICE); iowrite32(lower_32_bits(sgdma_rxphysaddr(priv, cdesc)), &csr->next_descrip); @@ -374,7 +407,7 @@ static int sgdma_async_write(struct altera_tse_private *priv, iowrite32(0x1f, &csr->status); dma_sync_single_for_device(priv->device, priv->txdescphys, - priv->txdescmem, DMA_TO_DEVICE); + priv->sgdmadesclen, DMA_TO_DEVICE); iowrite32(lower_32_bits(sgdma_txphysaddr(priv, desc)), &csr->next_descrip); diff --git a/drivers/net/ethernet/altera/altera_sgdma.h b/drivers/net/ethernet/altera/altera_sgdma.h index 07d471729dc4..584977e29ef9 100644 --- a/drivers/net/ethernet/altera/altera_sgdma.h +++ b/drivers/net/ethernet/altera/altera_sgdma.h @@ -26,10 +26,11 @@ void sgdma_clear_rxirq(struct altera_tse_private *); void sgdma_clear_txirq(struct altera_tse_private *); int sgdma_tx_buffer(struct altera_tse_private *priv, struct tse_buffer *); u32 sgdma_tx_completions(struct altera_tse_private *); -int sgdma_add_rx_desc(struct altera_tse_private *priv, struct tse_buffer *); +void sgdma_add_rx_desc(struct altera_tse_private *priv, struct tse_buffer *); void sgdma_status(struct altera_tse_private *); u32 sgdma_rx_status(struct altera_tse_private *); int sgdma_initialize(struct altera_tse_private *); void sgdma_uninitialize(struct altera_tse_private *); +void sgdma_start_rxdma(struct altera_tse_private *); #endif /* __ALTERA_SGDMA_H__ */ diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h index 8feeed05de0e..6059a09bb8ae 100644 --- a/drivers/net/ethernet/altera/altera_tse.h +++ b/drivers/net/ethernet/altera/altera_tse.h @@ -390,10 +390,11 @@ struct altera_dmaops { void (*clear_rxirq)(struct altera_tse_private *); int (*tx_buffer)(struct altera_tse_private *, struct tse_buffer *); u32 (*tx_completions)(struct altera_tse_private *); - int (*add_rx_desc)(struct altera_tse_private *, struct tse_buffer *); + void (*add_rx_desc)(struct altera_tse_private *, struct tse_buffer *); u32 (*get_rx_status)(struct altera_tse_private *); int (*init_dma)(struct altera_tse_private *); void (*uninit_dma)(struct altera_tse_private *); + void (*start_rxdma)(struct altera_tse_private *); }; /* This structure is private to each device. @@ -453,6 +454,7 @@ struct altera_tse_private { u32 rxctrlreg; dma_addr_t rxdescphys; dma_addr_t txdescphys; + size_t sgdmadesclen; struct list_head txlisthd; struct list_head rxlisthd; diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index c70a29e0b9f7..dabba5ed67bd 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -224,6 +224,7 @@ static int tse_init_rx_buffer(struct altera_tse_private *priv, dev_kfree_skb_any(rxbuffer->skb); return -EINVAL; } + rxbuffer->dma_addr &= (dma_addr_t)~3; rxbuffer->len = len; return 0; } @@ -425,9 +426,10 @@ static int tse_rx(struct altera_tse_private *priv, int limit) priv->dev->stats.rx_bytes += pktlength; entry = next_entry; + + tse_rx_refill(priv); } - tse_rx_refill(priv); return count; } @@ -520,7 +522,6 @@ static irqreturn_t altera_isr(int irq, void *dev_id) struct altera_tse_private *priv; unsigned long int flags; - if (unlikely(!dev)) { pr_err("%s: invalid dev pointer\n", __func__); return IRQ_NONE; @@ -868,13 +869,13 @@ static int init_mac(struct altera_tse_private *priv) /* Disable RX/TX shift 16 for alignment of all received frames on 16-bit * start address */ - tse_clear_bit(&mac->rx_cmd_stat, ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16); + tse_set_bit(&mac->rx_cmd_stat, ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16); tse_clear_bit(&mac->tx_cmd_stat, ALTERA_TSE_TX_CMD_STAT_TX_SHIFT16 | ALTERA_TSE_TX_CMD_STAT_OMIT_CRC); /* Set the MAC options */ cmd = ioread32(&mac->command_config); - cmd |= MAC_CMDCFG_PAD_EN; /* Padding Removal on Receive */ + cmd &= ~MAC_CMDCFG_PAD_EN; /* No padding Removal on Receive */ cmd &= ~MAC_CMDCFG_CRC_FWD; /* CRC Removal */ cmd |= MAC_CMDCFG_RX_ERR_DISC; /* Automatically discard frames * with CRC errors @@ -882,6 +883,12 @@ static int init_mac(struct altera_tse_private *priv) cmd |= MAC_CMDCFG_CNTL_FRM_ENA; cmd &= ~MAC_CMDCFG_TX_ENA; cmd &= ~MAC_CMDCFG_RX_ENA; + + /* Default speed and duplex setting, full/100 */ + cmd &= ~MAC_CMDCFG_HD_ENA; + cmd &= ~MAC_CMDCFG_ETH_SPEED; + cmd &= ~MAC_CMDCFG_ENA_10; + iowrite32(cmd, &mac->command_config); if (netif_msg_hw(priv)) @@ -1085,17 +1092,19 @@ static int tse_open(struct net_device *dev) spin_unlock_irqrestore(&priv->rxdma_irq_lock, flags); - /* Start MAC Rx/Tx */ - spin_lock(&priv->mac_cfg_lock); - tse_set_mac(priv, true); - spin_unlock(&priv->mac_cfg_lock); - if (priv->phydev) phy_start(priv->phydev); napi_enable(&priv->napi); netif_start_queue(dev); + priv->dmaops->start_rxdma(priv); + + /* Start MAC Rx/Tx */ + spin_lock(&priv->mac_cfg_lock); + tse_set_mac(priv, true); + spin_unlock(&priv->mac_cfg_lock); + return 0; tx_request_irq_error: @@ -1167,7 +1176,6 @@ static struct net_device_ops altera_tse_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; - static int request_and_map(struct platform_device *pdev, const char *name, struct resource **res, void __iomem **ptr) { @@ -1496,6 +1504,7 @@ struct altera_dmaops altera_dtype_sgdma = { .get_rx_status = sgdma_rx_status, .init_dma = sgdma_initialize, .uninit_dma = sgdma_uninitialize, + .start_rxdma = sgdma_start_rxdma, }; struct altera_dmaops altera_dtype_msgdma = { @@ -1514,6 +1523,7 @@ struct altera_dmaops altera_dtype_msgdma = { .get_rx_status = msgdma_rx_status, .init_dma = msgdma_initialize, .uninit_dma = msgdma_uninitialize, + .start_rxdma = msgdma_start_rxdma, }; static struct of_device_id altera_tse_ids[] = { From 5aec4ee3724ad93ee63cafc6f6b5f9cd40adda52 Mon Sep 17 00:00:00 2001 From: Vince Bridgers Date: Thu, 24 Apr 2014 16:58:09 -0500 Subject: [PATCH 406/623] Altera TSE: Set the Pause Quanta value to the IEEE default value This patch initializes the pause quanta set for transmitted pause frames to the IEEE specified default of 0xffff. Signed-off-by: Vince Bridgers Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_tse.h | 2 ++ drivers/net/ethernet/altera/altera_tse_main.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h index 6059a09bb8ae..465c4aabebbd 100644 --- a/drivers/net/ethernet/altera/altera_tse.h +++ b/drivers/net/ethernet/altera/altera_tse.h @@ -58,6 +58,8 @@ /* MAC function configuration default settings */ #define ALTERA_TSE_TX_IPG_LENGTH 12 +#define ALTERA_TSE_PAUSE_QUANTA 0xffff + #define GET_BIT_VALUE(v, bit) (((v) >> (bit)) & 0x1) /* MAC Command_Config Register Bit Definitions diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index dabba5ed67bd..63712830b333 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -891,6 +891,8 @@ static int init_mac(struct altera_tse_private *priv) iowrite32(cmd, &mac->command_config); + iowrite32(ALTERA_TSE_PAUSE_QUANTA, &mac->pause_quanta); + if (netif_msg_hw(priv)) dev_dbg(priv->device, "MAC post-initialization: CMD_CONFIG = 0x%08x\n", cmd); From a76420092d3d9f2e52ad7469c210c0e2fa962fe4 Mon Sep 17 00:00:00 2001 From: Vince Bridgers Date: Thu, 24 Apr 2014 16:58:10 -0500 Subject: [PATCH 407/623] Altera TSE: Fix Panic in probe routine when phy probe fails This patch addresses a fault in the error recovery path of the probe routine where the netdev structure was not being unregistered properly leading to a panic only when the phy probe failed. Abbreviated panic stack seen is as follows: (free_netdev+0xXX) from (altera_tse_probe+0xXX) (altera_tse_probe+0xXX) from (platform_drv_probe+0xXX) (platform_drv_probe+0xXX) from (driver_probe_device+0xXX) (driver_probe_device+0xXX) from (__driver_attach+0xXX) (__driver_attach+0xXX) from (bus_for_each_dev+0xXX) (bus_for_each_dev+0xXX) from (driver_attach+0xXX) (driver_attach+0xXX) from (bus_add_driver+0xXX) (bus_add_driver+0xXX) from (driver_register+0xXX) (driver_register+0xXX) from (__platform_driver_register+0xXX) (__platform_driver_register+0xXX) from (altera_tse_driver_init+0xXX) (altera_tse_driver_init+0xXX) from (do_one_initcall+0xXX) (do_one_initcall+0xXX) from (kernel_init_freeable+0xXX) (kernel_init_freeable+0xXX) from (kernel_init+0xXX) (kernel_init+0xXX) from (ret_from_fork+0xXX) Signed-off-by: Vince Bridgers Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_tse_main.c | 45 ++++++++++--------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c index 63712830b333..e44a4aeb9701 100644 --- a/drivers/net/ethernet/altera/altera_tse_main.c +++ b/drivers/net/ethernet/altera/altera_tse_main.c @@ -1245,7 +1245,7 @@ static int altera_tse_probe(struct platform_device *pdev) /* Get the mapped address to the SGDMA descriptor memory */ ret = request_and_map(pdev, "s1", &dma_res, &descmap); if (ret) - goto out_free; + goto err_free_netdev; /* Start of that memory is for transmit descriptors */ priv->tx_dma_desc = descmap; @@ -1264,24 +1264,24 @@ static int altera_tse_probe(struct platform_device *pdev) if (upper_32_bits(priv->rxdescmem_busaddr)) { dev_dbg(priv->device, "SGDMA bus addresses greater than 32-bits\n"); - goto out_free; + goto err_free_netdev; } if (upper_32_bits(priv->txdescmem_busaddr)) { dev_dbg(priv->device, "SGDMA bus addresses greater than 32-bits\n"); - goto out_free; + goto err_free_netdev; } } else if (priv->dmaops && priv->dmaops->altera_dtype == ALTERA_DTYPE_MSGDMA) { ret = request_and_map(pdev, "rx_resp", &dma_res, &priv->rx_dma_resp); if (ret) - goto out_free; + goto err_free_netdev; ret = request_and_map(pdev, "tx_desc", &dma_res, &priv->tx_dma_desc); if (ret) - goto out_free; + goto err_free_netdev; priv->txdescmem = resource_size(dma_res); priv->txdescmem_busaddr = dma_res->start; @@ -1289,13 +1289,13 @@ static int altera_tse_probe(struct platform_device *pdev) ret = request_and_map(pdev, "rx_desc", &dma_res, &priv->rx_dma_desc); if (ret) - goto out_free; + goto err_free_netdev; priv->rxdescmem = resource_size(dma_res); priv->rxdescmem_busaddr = dma_res->start; } else { - goto out_free; + goto err_free_netdev; } if (!dma_set_mask(priv->device, DMA_BIT_MASK(priv->dmaops->dmamask))) @@ -1304,26 +1304,26 @@ static int altera_tse_probe(struct platform_device *pdev) else if (!dma_set_mask(priv->device, DMA_BIT_MASK(32))) dma_set_coherent_mask(priv->device, DMA_BIT_MASK(32)); else - goto out_free; + goto err_free_netdev; /* MAC address space */ ret = request_and_map(pdev, "control_port", &control_port, (void __iomem **)&priv->mac_dev); if (ret) - goto out_free; + goto err_free_netdev; /* xSGDMA Rx Dispatcher address space */ ret = request_and_map(pdev, "rx_csr", &dma_res, &priv->rx_dma_csr); if (ret) - goto out_free; + goto err_free_netdev; /* xSGDMA Tx Dispatcher address space */ ret = request_and_map(pdev, "tx_csr", &dma_res, &priv->tx_dma_csr); if (ret) - goto out_free; + goto err_free_netdev; /* Rx IRQ */ @@ -1331,7 +1331,7 @@ static int altera_tse_probe(struct platform_device *pdev) if (priv->rx_irq == -ENXIO) { dev_err(&pdev->dev, "cannot obtain Rx IRQ\n"); ret = -ENXIO; - goto out_free; + goto err_free_netdev; } /* Tx IRQ */ @@ -1339,7 +1339,7 @@ static int altera_tse_probe(struct platform_device *pdev) if (priv->tx_irq == -ENXIO) { dev_err(&pdev->dev, "cannot obtain Tx IRQ\n"); ret = -ENXIO; - goto out_free; + goto err_free_netdev; } /* get FIFO depths from device tree */ @@ -1347,14 +1347,14 @@ static int altera_tse_probe(struct platform_device *pdev) &priv->rx_fifo_depth)) { dev_err(&pdev->dev, "cannot obtain rx-fifo-depth\n"); ret = -ENXIO; - goto out_free; + goto err_free_netdev; } if (of_property_read_u32(pdev->dev.of_node, "tx-fifo-depth", &priv->rx_fifo_depth)) { dev_err(&pdev->dev, "cannot obtain tx-fifo-depth\n"); ret = -ENXIO; - goto out_free; + goto err_free_netdev; } /* get hash filter settings for this instance */ @@ -1403,7 +1403,7 @@ static int altera_tse_probe(struct platform_device *pdev) ((priv->phy_addr >= 0) && (priv->phy_addr < PHY_MAX_ADDR)))) { dev_err(&pdev->dev, "invalid phy-addr specified %d\n", priv->phy_addr); - goto out_free; + goto err_free_netdev; } /* Create/attach to MDIO bus */ @@ -1411,7 +1411,7 @@ static int altera_tse_probe(struct platform_device *pdev) atomic_add_return(1, &instance_count)); if (ret) - goto out_free; + goto err_free_netdev; /* initialize netdev */ ether_setup(ndev); @@ -1448,7 +1448,7 @@ static int altera_tse_probe(struct platform_device *pdev) ret = register_netdev(ndev); if (ret) { dev_err(&pdev->dev, "failed to register TSE net device\n"); - goto out_free_mdio; + goto err_register_netdev; } platform_set_drvdata(pdev, ndev); @@ -1465,13 +1465,16 @@ static int altera_tse_probe(struct platform_device *pdev) ret = init_phy(ndev); if (ret != 0) { netdev_err(ndev, "Cannot attach to PHY (error: %d)\n", ret); - goto out_free_mdio; + goto err_init_phy; } return 0; -out_free_mdio: +err_init_phy: + unregister_netdev(ndev); +err_register_netdev: + netif_napi_del(&priv->napi); altera_tse_mdio_destroy(ndev); -out_free: +err_free_netdev: free_netdev(ndev); return ret; } From 99514e116c2e297e03a1434eb7e9f4e8fd2a492b Mon Sep 17 00:00:00 2001 From: Vince Bridgers Date: Thu, 24 Apr 2014 16:58:11 -0500 Subject: [PATCH 408/623] Altera TSE: Change driver name used by Ethtool This patch changes the name used by Ethtool to something more conventional in preparation for TSE Ethtool register dump support to be added in the near future. Signed-off-by: Vince Bridgers Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_tse_ethtool.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/altera/altera_tse_ethtool.c b/drivers/net/ethernet/altera/altera_tse_ethtool.c index 319ca74f5e74..76133caffa78 100644 --- a/drivers/net/ethernet/altera/altera_tse_ethtool.c +++ b/drivers/net/ethernet/altera/altera_tse_ethtool.c @@ -77,7 +77,7 @@ static void tse_get_drvinfo(struct net_device *dev, struct altera_tse_private *priv = netdev_priv(dev); u32 rev = ioread32(&priv->mac_dev->megacore_revision); - strcpy(info->driver, "Altera TSE MAC IP Driver"); + strcpy(info->driver, "altera_tse"); strcpy(info->version, "v8.0"); snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "v%d.%d", rev & 0xFFFF, (rev & 0xFFFF0000) >> 16); @@ -185,6 +185,12 @@ static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs, * how to do any special formatting of this data. * This version number will need to change if and * when this register table is changed. + * + * version[31:0] = 1: Dump the first 128 TSE Registers + * Upper bits are all 0 by default + * + * Upper 16-bits will indicate feature presence for + * Ethtool register decoding in future version. */ regs->version = 1; From cafa1fca9de584dcd920629cf075091a7df64bb0 Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Thu, 24 Apr 2014 18:05:03 -0700 Subject: [PATCH 409/623] i40e: fix Timesync Tx interrupt handler code This patch fixes the PTP Tx timestamp interrupt handler. The original code misinterpreted the interrupt handler design. We were clearing the ena_mask bit for the Timesync interrupts. This is done to indicate that the interrupt will be handled in a scheduled work item (instead of immediately) and that work item is responsible for re-enabling the interrupts. However, the Tx timestamp was being handled immediately and nothing was ever re-enabling it. This resulted in a single interrupt working for the life of the driver. This patch fixes the issue by instead clearing the bit from icr0 which is used to indicate that the interrupt was immediately handled and can be re-enabled right away. This patch also clears up a related issue due to writing the PRTTSYN_STAT_0 register, which was unintentionally clearing the cause bits for Timesync interrupts. Change-ID: I057bd70d53c302f60fab78246989cbdfa469d83b Signed-off-by: Jacob Keller Acked-by: Anjali Singhai Jain Acked-by: Shannon Nelson Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/i40e/i40e_main.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 59eada31e211..cf0761f08911 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -2897,12 +2897,9 @@ static irqreturn_t i40e_intr(int irq, void *data) u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0); if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) { - ena_mask &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK; + icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK; i40e_ptp_tx_hwtstamp(pf); - prttsyn_stat &= ~I40E_PRTTSYN_STAT_0_TXTIME_MASK; } - - wr32(hw, I40E_PRTTSYN_STAT_0, prttsyn_stat); } /* If a critical error is pending we have no choice but to reset the From ec6931b281797b69e6cf109f9cc94d5a2bf994e0 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 23 Apr 2014 17:52:52 +0100 Subject: [PATCH 410/623] word-at-a-time: avoid undefined behaviour in zero_bytemask macro The asm-generic, big-endian version of zero_bytemask creates a mask of bytes preceding the first zero-byte by left shifting ~0ul based on the position of the first zero byte. Unfortunately, if the first (top) byte is zero, the output of prep_zero_mask has only the top bit set, resulting in undefined C behaviour as we shift left by an amount equal to the width of the type. As it happens, GCC doesn't manage to spot this through the call to fls(), but the issue remains if architectures choose to implement their shift instructions differently. An example would be arch/arm/ (AArch32), where LSL Rd, Rn, #32 results in Rd == 0x0, whilst on arch/arm64 (AArch64) LSL Xd, Xn, #64 results in Xd == Xn. Rather than check explicitly for the problematic shift, this patch adds an extra shift by 1, replacing fls with __fls. Since zero_bytemask is never called with a zero argument (has_zero() is used to check the data first), we don't need to worry about calling __fls(0), which is undefined. Cc: Cc: Victor Kamensky Signed-off-by: Will Deacon Signed-off-by: Linus Torvalds --- include/asm-generic/word-at-a-time.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/include/asm-generic/word-at-a-time.h b/include/asm-generic/word-at-a-time.h index d3909effd725..d96deb443f18 100644 --- a/include/asm-generic/word-at-a-time.h +++ b/include/asm-generic/word-at-a-time.h @@ -50,11 +50,7 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct } #ifndef zero_bytemask -#ifdef CONFIG_64BIT -#define zero_bytemask(mask) (~0ul << fls64(mask)) -#else -#define zero_bytemask(mask) (~0ul << fls(mask)) -#endif /* CONFIG_64BIT */ -#endif /* zero_bytemask */ +#define zero_bytemask(mask) (~0ul << __fls(mask) << 1) +#endif #endif /* _ASM_WORD_AT_A_TIME_H */ From 535cdf3c195ed4125414f6bb780382aed1b4e19c Mon Sep 17 00:00:00 2001 From: Hariprasad Shenai Date: Fri, 25 Apr 2014 18:00:12 +0530 Subject: [PATCH 411/623] cxgb4: Update Kconfig to include Chelsio T5 adapter Signed-off-by: Hariprasad Shenai Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/Kconfig | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/chelsio/Kconfig b/drivers/net/ethernet/chelsio/Kconfig index d40c994a4f6a..570222c33410 100644 --- a/drivers/net/ethernet/chelsio/Kconfig +++ b/drivers/net/ethernet/chelsio/Kconfig @@ -67,13 +67,13 @@ config CHELSIO_T3 will be called cxgb3. config CHELSIO_T4 - tristate "Chelsio Communications T4 Ethernet support" + tristate "Chelsio Communications T4/T5 Ethernet support" depends on PCI select FW_LOADER select MDIO ---help--- - This driver supports Chelsio T4-based gigabit and 10Gb Ethernet - adapters. + This driver supports Chelsio T4 and T5 based gigabit, 10Gb Ethernet + adapter and T5 based 40Gb Ethernet adapter. For general information about Chelsio and our products, visit our website at . @@ -87,11 +87,12 @@ config CHELSIO_T4 will be called cxgb4. config CHELSIO_T4VF - tristate "Chelsio Communications T4 Virtual Function Ethernet support" + tristate "Chelsio Communications T4/T5 Virtual Function Ethernet support" depends on PCI ---help--- - This driver supports Chelsio T4-based gigabit and 10Gb Ethernet - adapters with PCI-E SR-IOV Virtual Functions. + This driver supports Chelsio T4 and T5 based gigabit, 10Gb Ethernet + adapters and T5 based 40Gb Ethernet adapters with PCI-E SR-IOV Virtual + Functions. For general information about Chelsio and our products, visit our website at . From 30313a3d5794472c3548d7288e306a5492030370 Mon Sep 17 00:00:00 2001 From: Toshiaki Makita Date: Fri, 25 Apr 2014 17:01:18 +0900 Subject: [PATCH 412/623] bridge: Handle IFLA_ADDRESS correctly when creating bridge device When bridge device is created with IFLA_ADDRESS, we are not calling br_stp_change_bridge_id(), which leads to incorrect local fdb management and bridge id calculation, and prevents us from receiving frames on the bridge device. Reported-by: Tom Gundersen Signed-off-by: Toshiaki Makita Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index e74b6d530cb6..e8844d975b32 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -445,6 +445,20 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[]) return 0; } +static int br_dev_newlink(struct net *src_net, struct net_device *dev, + struct nlattr *tb[], struct nlattr *data[]) +{ + struct net_bridge *br = netdev_priv(dev); + + if (tb[IFLA_ADDRESS]) { + spin_lock_bh(&br->lock); + br_stp_change_bridge_id(br, nla_data(tb[IFLA_ADDRESS])); + spin_unlock_bh(&br->lock); + } + + return register_netdevice(dev); +} + static size_t br_get_link_af_size(const struct net_device *dev) { struct net_port_vlans *pv; @@ -473,6 +487,7 @@ struct rtnl_link_ops br_link_ops __read_mostly = { .priv_size = sizeof(struct net_bridge), .setup = br_dev_setup, .validate = br_validate, + .newlink = br_dev_newlink, .dellink = br_dev_delete, }; From 796bec1efbbd3be98d84cd68279c6ec03a4782f9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Fri, 25 Apr 2014 10:03:29 +0200 Subject: [PATCH 413/623] arc_emac: fix probe error path The probe function at the moment only frees the netdev but does not disconnect the phy or removes the mdio bus it registered. Signed-off-by: Heiko Stuebner Signed-off-by: David S. Miller --- drivers/net/ethernet/arc/emac_main.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c index 9f45782819ec..9747ddaf6ad2 100644 --- a/drivers/net/ethernet/arc/emac_main.c +++ b/drivers/net/ethernet/arc/emac_main.c @@ -683,7 +683,7 @@ static int arc_emac_probe(struct platform_device *pdev) priv->regs = devm_ioremap_resource(&pdev->dev, &res_regs); if (IS_ERR(priv->regs)) { err = PTR_ERR(priv->regs); - goto out; + goto out_netdev; } dev_dbg(&pdev->dev, "Registers base address is 0x%p\n", priv->regs); @@ -693,7 +693,7 @@ static int arc_emac_probe(struct platform_device *pdev) if (!(id == 0x0005fd02 || id == 0x0007fd02)) { dev_err(&pdev->dev, "ARC EMAC not detected, id=0x%x\n", id); err = -ENODEV; - goto out; + goto out_netdev; } dev_info(&pdev->dev, "ARC EMAC detected with id: 0x%x\n", id); @@ -708,7 +708,7 @@ static int arc_emac_probe(struct platform_device *pdev) ndev->name, ndev); if (err) { dev_err(&pdev->dev, "could not allocate IRQ\n"); - goto out; + goto out_netdev; } /* Get MAC address from device tree */ @@ -729,7 +729,7 @@ static int arc_emac_probe(struct platform_device *pdev) if (!priv->rxbd) { dev_err(&pdev->dev, "failed to allocate data buffers\n"); err = -ENOMEM; - goto out; + goto out_netdev; } priv->txbd = priv->rxbd + RX_BD_NUM; @@ -741,7 +741,7 @@ static int arc_emac_probe(struct platform_device *pdev) err = arc_mdio_probe(pdev, priv); if (err) { dev_err(&pdev->dev, "failed to probe MII bus\n"); - goto out; + goto out_netdev; } priv->phy_dev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0, @@ -749,7 +749,7 @@ static int arc_emac_probe(struct platform_device *pdev) if (!priv->phy_dev) { dev_err(&pdev->dev, "of_phy_connect() failed\n"); err = -ENODEV; - goto out; + goto out_mdio; } dev_info(&pdev->dev, "connected to %s phy with id 0x%x\n", @@ -759,14 +759,19 @@ static int arc_emac_probe(struct platform_device *pdev) err = register_netdev(ndev); if (err) { - netif_napi_del(&priv->napi); dev_err(&pdev->dev, "failed to register network device\n"); - goto out; + goto out_netif_api; } return 0; -out: +out_netif_api: + netif_napi_del(&priv->napi); + phy_disconnect(priv->phy_dev); + priv->phy_dev = NULL; +out_mdio: + arc_mdio_remove(priv); +out_netdev: free_netdev(ndev); return err; } From 88154c96ee2dab84ae78ad41562b4a3a23d83788 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Fri, 25 Apr 2014 10:06:13 +0200 Subject: [PATCH 414/623] arc_emac: add clock handling This adds ability for the arc_emac to really handle its supplying clock. To get the needed clock-frequency either a real clock or the previous clock-frequency property must be provided. Signed-off-by: Heiko Stuebner Tested-by: Max Schwarz Signed-off-by: David S. Miller --- .../devicetree/bindings/net/arc_emac.txt | 12 ++++- drivers/net/ethernet/arc/emac.h | 2 + drivers/net/ethernet/arc/emac_main.c | 46 ++++++++++++++----- 3 files changed, 47 insertions(+), 13 deletions(-) diff --git a/Documentation/devicetree/bindings/net/arc_emac.txt b/Documentation/devicetree/bindings/net/arc_emac.txt index 7fbb027218a1..a1d71eb43b20 100644 --- a/Documentation/devicetree/bindings/net/arc_emac.txt +++ b/Documentation/devicetree/bindings/net/arc_emac.txt @@ -4,11 +4,15 @@ Required properties: - compatible: Should be "snps,arc-emac" - reg: Address and length of the register set for the device - interrupts: Should contain the EMAC interrupts -- clock-frequency: CPU frequency. It is needed to calculate and set polling -period of EMAC. - max-speed: see ethernet.txt file in the same directory. - phy: see ethernet.txt file in the same directory. +Clock handling: +The clock frequency is needed to calculate and set polling period of EMAC. +It must be provided by one of: +- clock-frequency: CPU frequency. +- clocks: reference to the clock supplying the EMAC. + Child nodes of the driver are the individual PHY devices connected to the MDIO bus. They must have a "reg" property given the PHY address on the MDIO bus. @@ -19,7 +23,11 @@ Examples: reg = <0xc0fc2000 0x3c>; interrupts = <6>; mac-address = [ 00 11 22 33 44 55 ]; + clock-frequency = <80000000>; + /* or */ + clocks = <&emac_clock>; + max-speed = <100>; phy = <&phy0>; diff --git a/drivers/net/ethernet/arc/emac.h b/drivers/net/ethernet/arc/emac.h index 928fac6dd10a..53f85bf71526 100644 --- a/drivers/net/ethernet/arc/emac.h +++ b/drivers/net/ethernet/arc/emac.h @@ -11,6 +11,7 @@ #include #include #include +#include /* STATUS and ENABLE Register bit masks */ #define TXINT_MASK (1<<0) /* Transmit interrupt */ @@ -131,6 +132,7 @@ struct arc_emac_priv { struct mii_bus *bus; void __iomem *regs; + struct clk *clk; struct napi_struct napi; struct net_device_stats stats; diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c index 9747ddaf6ad2..d647a7d115ac 100644 --- a/drivers/net/ethernet/arc/emac_main.c +++ b/drivers/net/ethernet/arc/emac_main.c @@ -649,13 +649,6 @@ static int arc_emac_probe(struct platform_device *pdev) return -ENODEV; } - /* Get CPU clock frequency from device tree */ - if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", - &clock_frequency)) { - dev_err(&pdev->dev, "failed to retrieve from device tree\n"); - return -EINVAL; - } - /* Get IRQ from device tree */ irq = irq_of_parse_and_map(pdev->dev.of_node, 0); if (!irq) { @@ -687,13 +680,32 @@ static int arc_emac_probe(struct platform_device *pdev) } dev_dbg(&pdev->dev, "Registers base address is 0x%p\n", priv->regs); + priv->clk = of_clk_get(pdev->dev.of_node, 0); + if (IS_ERR(priv->clk)) { + /* Get CPU clock frequency from device tree */ + if (of_property_read_u32(pdev->dev.of_node, "clock-frequency", + &clock_frequency)) { + dev_err(&pdev->dev, "failed to retrieve from device tree\n"); + err = -EINVAL; + goto out_netdev; + } + } else { + err = clk_prepare_enable(priv->clk); + if (err) { + dev_err(&pdev->dev, "failed to enable clock\n"); + goto out_clkget; + } + + clock_frequency = clk_get_rate(priv->clk); + } + id = arc_reg_get(priv, R_ID); /* Check for EMAC revision 5 or 7, magic number */ if (!(id == 0x0005fd02 || id == 0x0007fd02)) { dev_err(&pdev->dev, "ARC EMAC not detected, id=0x%x\n", id); err = -ENODEV; - goto out_netdev; + goto out_clken; } dev_info(&pdev->dev, "ARC EMAC detected with id: 0x%x\n", id); @@ -708,7 +720,7 @@ static int arc_emac_probe(struct platform_device *pdev) ndev->name, ndev); if (err) { dev_err(&pdev->dev, "could not allocate IRQ\n"); - goto out_netdev; + goto out_clken; } /* Get MAC address from device tree */ @@ -729,7 +741,7 @@ static int arc_emac_probe(struct platform_device *pdev) if (!priv->rxbd) { dev_err(&pdev->dev, "failed to allocate data buffers\n"); err = -ENOMEM; - goto out_netdev; + goto out_clken; } priv->txbd = priv->rxbd + RX_BD_NUM; @@ -741,7 +753,7 @@ static int arc_emac_probe(struct platform_device *pdev) err = arc_mdio_probe(pdev, priv); if (err) { dev_err(&pdev->dev, "failed to probe MII bus\n"); - goto out_netdev; + goto out_clken; } priv->phy_dev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0, @@ -771,6 +783,12 @@ out_netif_api: priv->phy_dev = NULL; out_mdio: arc_mdio_remove(priv); +out_clken: + if (!IS_ERR(priv->clk)) + clk_disable_unprepare(priv->clk); +out_clkget: + if (!IS_ERR(priv->clk)) + clk_put(priv->clk); out_netdev: free_netdev(ndev); return err; @@ -786,6 +804,12 @@ static int arc_emac_remove(struct platform_device *pdev) arc_mdio_remove(priv); unregister_netdev(ndev); netif_napi_del(&priv->napi); + + if (!IS_ERR(priv->clk)) { + clk_disable_unprepare(priv->clk); + clk_put(priv->clk); + } + free_netdev(ndev); return 0; From 85350871317a5adb35519d9dc6fc9e80809d42ad Mon Sep 17 00:00:00 2001 From: Xufeng Zhang Date: Fri, 25 Apr 2014 16:55:41 +0800 Subject: [PATCH 415/623] sctp: reset flowi4_oif parameter on route lookup commit 813b3b5db83 (ipv4: Use caller's on-stack flowi as-is in output route lookups.) introduces another regression which is very similar to the problem of commit e6b45241c (ipv4: reset flowi parameters on route connect) wants to fix: Before we call ip_route_output_key() in sctp_v4_get_dst() to get a dst that matches a bind address as the source address, we have already called this function previously and the flowi parameters have been initialized including flowi4_oif, so when we call this function again, the process in __ip_route_output_key() will be different because of the setting of flowi4_oif, and we'll get a networking device which corresponds to the inputted flowi4_oif as the output device, this is wrong because we'll never hit this place if the previously returned source address of dst match one of the bound addresses. To reproduce this problem, a vlan setting is enough: # ifconfig eth0 up # route del default # vconfig add eth0 2 # vconfig add eth0 3 # ifconfig eth0.2 10.0.1.14 netmask 255.255.255.0 # route add default gw 10.0.1.254 dev eth0.2 # ifconfig eth0.3 10.0.0.14 netmask 255.255.255.0 # ip rule add from 10.0.0.14 table 4 # ip route add table 4 default via 10.0.0.254 src 10.0.0.14 dev eth0.3 # sctp_darn -H 10.0.0.14 -P 36422 -h 10.1.4.134 -p 36422 -s -I You'll detect that all the flow are routed to eth0.2(10.0.1.254). Signed-off-by: Xufeng Zhang Signed-off-by: Julian Anastasov Acked-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/protocol.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index c09757fbf803..44cbb54c8574 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -491,8 +491,13 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr, continue; if ((laddr->state == SCTP_ADDR_SRC) && (AF_INET == laddr->a.sa.sa_family)) { - fl4->saddr = laddr->a.v4.sin_addr.s_addr; fl4->fl4_sport = laddr->a.v4.sin_port; + flowi4_update_output(fl4, + asoc->base.sk->sk_bound_dev_if, + RT_CONN_FLAGS(asoc->base.sk), + daddr->v4.sin_addr.s_addr, + laddr->a.v4.sin_addr.s_addr); + rt = ip_route_output_key(sock_net(sk), fl4); if (!IS_ERR(rt)) { dst = &rt->dst; From 79465d2fd48e68940c2bdecddbdecd45bbba06fe Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Mon, 28 Apr 2014 11:05:43 +0930 Subject: [PATCH 416/623] module: remove warning about waiting module removal. We remove the waiting module removal in commit 3f2b9c9cdf38 (September 2013), but it turns out that modprobe in kmod (< version 16) was asking for waiting module removal. No one noticed since modprobe would check for 0 usage immediately before trying to remove the module, and the race is unlikely. However, it means that anyone running old (but not ancient) kmod versions is hitting the printk designed to see if anyone was running "rmmod -w". All reports so far have been false positives, so remove the warning. Fixes: 3f2b9c9cdf389e303b2273679af08aab5f153517 Reported-by: Valerio Vanni Cc: Elliott, Robert (Server Storage) Cc: stable@kernel.org Acked-by: Lucas De Marchi Signed-off-by: Rusty Russell --- kernel/module.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/kernel/module.c b/kernel/module.c index 11869408f79b..ae7821898bf2 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -815,9 +815,6 @@ SYSCALL_DEFINE2(delete_module, const char __user *, name_user, return -EFAULT; name[MODULE_NAME_LEN-1] = '\0'; - if (!(flags & O_NONBLOCK)) - pr_warn("waiting module removal not supported: please upgrade\n"); - if (mutex_lock_interruptible(&module_mutex) != 0) return -EINTR; From b85f5deaf052340021d025e120a9858f084a1d79 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:28 +0200 Subject: [PATCH 417/623] net: qmi_wwan: add Sierra Wireless EM7355 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index e3458e3c44f1..f4c9290aa117 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -731,6 +731,7 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x1199, 0x68a2, 8)}, /* Sierra Wireless MC7710 in QMI mode */ {QMI_FIXED_INTF(0x1199, 0x68a2, 19)}, /* Sierra Wireless MC7710 in QMI mode */ {QMI_FIXED_INTF(0x1199, 0x901c, 8)}, /* Sierra Wireless EM7700 */ + {QMI_FIXED_INTF(0x1199, 0x901f, 8)}, /* Sierra Wireless EM7355 */ {QMI_FIXED_INTF(0x1199, 0x9051, 8)}, /* Netgear AirCard 340U */ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */ From 1c138607a7be64074d7fba68d0d533ec38f9d17b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:29 +0200 Subject: [PATCH 418/623] net: qmi_wwan: add Sierra Wireless MC73xx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index f4c9290aa117..60a95ab243d6 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -730,6 +730,9 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x114f, 0x68a2, 8)}, /* Sierra Wireless MC7750 */ {QMI_FIXED_INTF(0x1199, 0x68a2, 8)}, /* Sierra Wireless MC7710 in QMI mode */ {QMI_FIXED_INTF(0x1199, 0x68a2, 19)}, /* Sierra Wireless MC7710 in QMI mode */ + {QMI_FIXED_INTF(0x1199, 0x68c0, 8)}, /* Sierra Wireless MC73xx */ + {QMI_FIXED_INTF(0x1199, 0x68c0, 10)}, /* Sierra Wireless MC73xx */ + {QMI_FIXED_INTF(0x1199, 0x68c0, 11)}, /* Sierra Wireless MC73xx */ {QMI_FIXED_INTF(0x1199, 0x901c, 8)}, /* Sierra Wireless EM7700 */ {QMI_FIXED_INTF(0x1199, 0x901f, 8)}, /* Sierra Wireless EM7355 */ {QMI_FIXED_INTF(0x1199, 0x9051, 8)}, /* Netgear AirCard 340U */ From 9214224e43e4264b02686ea8b455f310935607b5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:30 +0200 Subject: [PATCH 419/623] net: qmi_wwan: add Sierra Wireless MC7305/MC7355 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 60a95ab243d6..336b5375b00b 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -735,6 +735,7 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x1199, 0x68c0, 11)}, /* Sierra Wireless MC73xx */ {QMI_FIXED_INTF(0x1199, 0x901c, 8)}, /* Sierra Wireless EM7700 */ {QMI_FIXED_INTF(0x1199, 0x901f, 8)}, /* Sierra Wireless EM7355 */ + {QMI_FIXED_INTF(0x1199, 0x9041, 8)}, /* Sierra Wireless MC7305/MC7355 */ {QMI_FIXED_INTF(0x1199, 0x9051, 8)}, /* Netgear AirCard 340U */ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */ From efc0b25c3add97717ece57bf5319792ca98f348e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:31 +0200 Subject: [PATCH 420/623] net: qmi_wwan: add Olivetti Olicard 500 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Device interface layout: 0: ff/ff/ff - serial 1: ff/ff/ff - serial AT+PPP 2: 08/06/50 - storage 3: ff/ff/ff - serial 4: ff/ff/ff - QMI/wwan Reported-by: Julio Araujo Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 336b5375b00b..127b745d2e15 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -743,6 +743,7 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)}, /* Telit LE920 */ {QMI_FIXED_INTF(0x1bc7, 0x1201, 2)}, /* Telit LE920 */ {QMI_FIXED_INTF(0x0b3c, 0xc005, 6)}, /* Olivetti Olicard 200 */ + {QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)}, /* Olivetti Olicard 500 */ {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)}, /* Cinterion PLxx */ {QMI_FIXED_INTF(0x1e2d, 0x0053, 4)}, /* Cinterion PHxx,PXxx */ From 75573660c47a0db7cc931dcf154945610e02130a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:32 +0200 Subject: [PATCH 421/623] net: qmi_wwan: add Alcatel L800MA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Device interface layout: 0: ff/ff/ff - serial 1: ff/00/00 - serial AT+PPP 2: ff/ff/ff - QMI/wwan 3: 08/06/50 - storage Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 127b745d2e15..46937c1b8181 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -738,6 +738,7 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x1199, 0x9041, 8)}, /* Sierra Wireless MC7305/MC7355 */ {QMI_FIXED_INTF(0x1199, 0x9051, 8)}, /* Netgear AirCard 340U */ {QMI_FIXED_INTF(0x1bbb, 0x011e, 4)}, /* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */ + {QMI_FIXED_INTF(0x1bbb, 0x0203, 2)}, /* Alcatel L800MA */ {QMI_FIXED_INTF(0x2357, 0x0201, 4)}, /* TP-LINK HSUPA Modem MA180 */ {QMI_FIXED_INTF(0x2357, 0x9000, 4)}, /* TP-LINK MA260 */ {QMI_FIXED_INTF(0x1bc7, 0x1200, 5)}, /* Telit LE920 */ From 41be7d90993b1502d445bfc59e58348c258ce66a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:33 +0200 Subject: [PATCH 422/623] net: qmi_wwan: add a number of CMOTech devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit A number of older CMOTech modems are based on Qualcomm chips and exporting a QMI/wwan function. Reported-by: Lars Melin Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 46937c1b8181..ac1ad189f0c1 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -669,6 +669,22 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x05c6, 0x920d, 5)}, {QMI_FIXED_INTF(0x12d1, 0x140c, 1)}, /* Huawei E173 */ {QMI_FIXED_INTF(0x12d1, 0x14ac, 1)}, /* Huawei E1820 */ + {QMI_FIXED_INTF(0x16d8, 0x6003, 0)}, /* CMOTech 6003 */ + {QMI_FIXED_INTF(0x16d8, 0x6007, 0)}, /* CMOTech CHE-628S */ + {QMI_FIXED_INTF(0x16d8, 0x6008, 0)}, /* CMOTech CMU-301 */ + {QMI_FIXED_INTF(0x16d8, 0x6280, 0)}, /* CMOTech CHU-628 */ + {QMI_FIXED_INTF(0x16d8, 0x7001, 0)}, /* CMOTech CHU-720S */ + {QMI_FIXED_INTF(0x16d8, 0x7002, 0)}, /* CMOTech 7002 */ + {QMI_FIXED_INTF(0x16d8, 0x7003, 4)}, /* CMOTech CHU-629K */ + {QMI_FIXED_INTF(0x16d8, 0x7004, 3)}, /* CMOTech 7004 */ + {QMI_FIXED_INTF(0x16d8, 0x7006, 5)}, /* CMOTech CGU-629 */ + {QMI_FIXED_INTF(0x16d8, 0x700a, 4)}, /* CMOTech CHU-629S */ + {QMI_FIXED_INTF(0x16d8, 0x7211, 0)}, /* CMOTech CHU-720I */ + {QMI_FIXED_INTF(0x16d8, 0x7212, 0)}, /* CMOTech 7212 */ + {QMI_FIXED_INTF(0x16d8, 0x7213, 0)}, /* CMOTech 7213 */ + {QMI_FIXED_INTF(0x16d8, 0x7251, 1)}, /* CMOTech 7251 */ + {QMI_FIXED_INTF(0x16d8, 0x7252, 1)}, /* CMOTech 7252 */ + {QMI_FIXED_INTF(0x16d8, 0x7253, 1)}, /* CMOTech 7253 */ {QMI_FIXED_INTF(0x19d2, 0x0002, 1)}, {QMI_FIXED_INTF(0x19d2, 0x0012, 1)}, {QMI_FIXED_INTF(0x19d2, 0x0017, 3)}, From 6f10c5d1b1aeddb63d33070abb8bc5a177beeb1f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 25 Apr 2014 19:00:34 +0200 Subject: [PATCH 423/623] net: qmi_wwan: add a number of Dell devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dan writes: "The Dell drivers use the same configuration for PIDs: 81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card 81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card 81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card 81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card 81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card These devices are all clearly Sierra devices, but are also definitely Gobi-based. The A8 might be the MC7700/7710 and A9 is likely a MC7750. >From DellGobi5kSetup.exe from the Dell drivers: usbif0: serial/firmware loader? usbif2: nmea usbif3: modem/ppp usbif8: net/QMI" Reported-by: AceLan Kao Reported-by: Dan Williams Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index ac1ad189f0c1..83208d4fdc59 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -763,6 +763,11 @@ static const struct usb_device_id products[] = { {QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)}, /* Olivetti Olicard 500 */ {QMI_FIXED_INTF(0x1e2d, 0x0060, 4)}, /* Cinterion PLxx */ {QMI_FIXED_INTF(0x1e2d, 0x0053, 4)}, /* Cinterion PHxx,PXxx */ + {QMI_FIXED_INTF(0x413c, 0x81a2, 8)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */ + {QMI_FIXED_INTF(0x413c, 0x81a3, 8)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */ + {QMI_FIXED_INTF(0x413c, 0x81a4, 8)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */ + {QMI_FIXED_INTF(0x413c, 0x81a8, 8)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */ + {QMI_FIXED_INTF(0x413c, 0x81a9, 8)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */ /* 4. Gobi 1000 devices */ {QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ From d1db0eea852497762cab43b905b879dfcd3b8987 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 27 Apr 2014 19:29:27 -0700 Subject: [PATCH 424/623] Linux 3.15-rc3 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 80a2d2448531..041c685e11ea 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 15 SUBLEVEL = 0 -EXTRAVERSION = -rc2 +EXTRAVERSION = -rc3 NAME = Shuffling Zombie Juror # *DOCUMENTATION* From 28ea3c7529388c1e4177336a0e655c6c7272fd1c Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Sun, 27 Apr 2014 18:10:43 -0400 Subject: [PATCH 425/623] powerpc: Export flush_icache_range Commit aac416fc38c (lkdtm: flush icache and report actions) calls flush_icache_range from a module. It's exported on most architectures that implement it, but not on powerpc. This patch exports it to fix the module link failure. Signed-off-by: Jeff Mahoney Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/ppc_ksyms.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 3bd77edd7610..450850a49dce 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -120,6 +120,7 @@ EXPORT_SYMBOL(giveup_spe); EXPORT_SYMBOL(flush_instruction_cache); #endif EXPORT_SYMBOL(flush_dcache_range); +EXPORT_SYMBOL(flush_icache_range); #ifdef CONFIG_SMP #ifdef CONFIG_PPC32 From 4fb8d027dca0236c811272d342cf185569d91311 Mon Sep 17 00:00:00 2001 From: Li Zhong Date: Mon, 28 Apr 2014 08:29:51 +0800 Subject: [PATCH 426/623] powerpc: Fix Oops in rtas_stop_self() commit 41dd03a9 may cause Oops in rtas_stop_self(). The reason is that the rtas_args was moved into stack space. For a box with more that 4GB RAM, the stack could easily be outside 32bit range, but RTAS is 32bit. So the patch moves rtas_args away from stack by adding static before it. Signed-off-by: Li Zhong Signed-off-by: Anton Blanchard Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/hotplug-cpu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 9b8e05078a63..20d62975856f 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -88,13 +88,14 @@ void set_default_offline_state(int cpu) static void rtas_stop_self(void) { - struct rtas_args args = { - .token = cpu_to_be32(rtas_stop_self_token), + static struct rtas_args args = { .nargs = 0, .nret = 1, .rets = &args.args[0], }; + args.token = cpu_to_be32(rtas_stop_self_token); + local_irq_disable(); BUG_ON(rtas_stop_self_token == RTAS_UNKNOWN_SERVICE); From ba9a32b176c31ec4d3d7314bb2e529a85423f7a4 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Thu, 24 Apr 2014 16:55:33 +0930 Subject: [PATCH 427/623] powerpc/powernv: Fix sysparam sysfs error handling When a sysparam query in OPAL returned a negative value (error code), sysfs would spew out a decent chunk of memory; almost 64K more than expected. This was traced to a sign/unsigned mix up in the OPAL sysparam sysfs code at sys_param_show. The return value of sys_param_show is a ssize_t, calculated using return ret ? ret : attr->param_size; Alan Modra explains: "attr->param_size" is an unsigned int, "ret" an int, so the overall expression has type unsigned int. Result is that ret is cast to unsigned int before being cast to ssize_t. Instead of using the ternary operator, set ret to the param_size if an error is not detected. The same bug exists in the sysfs write callback; this patch fixes it in the same way. A note on debugging this next time: on my system gcc will warn about this if compiled with -Wsign-compare, which is not enabled by -Wall, only -Wextra. Signed-off-by: Joel Stanley Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-sysparam.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index 6b614726baf2..a51ea189aec3 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -121,9 +121,10 @@ static ssize_t sys_param_show(struct kobject *kobj, memcpy(buf, param_data_buf, attr->param_size); + ret = attr->param_size; out: mutex_unlock(&opal_sysparam_mutex); - return ret ? ret : attr->param_size; + return ret; } static ssize_t sys_param_store(struct kobject *kobj, @@ -138,7 +139,9 @@ static ssize_t sys_param_store(struct kobject *kobj, ret = opal_set_sys_param(attr->param_id, attr->param_size, param_data_buf); mutex_unlock(&opal_sysparam_mutex); - return ret ? ret : count; + if (!ret) + ret = count; + return ret; } void __init opal_sys_param_init(void) From b8569d230416c490065098684adf13c1751cb830 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Thu, 24 Apr 2014 16:55:34 +0930 Subject: [PATCH 428/623] powerpc/powernv: Use ssize_t for sysparam return values The OPAL calls are returning int64_t values, which the sysparam code stores in an int, and the sysfs callback returns ssize_t. Make code a easier to read by consistently using ssize_t. Signed-off-by: Joel Stanley Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-sysparam.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index a51ea189aec3..0675e1a90b40 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -39,10 +39,11 @@ struct param_attr { struct kobj_attribute kobj_attr; }; -static int opal_get_sys_param(u32 param_id, u32 length, void *buffer) +static ssize_t opal_get_sys_param(u32 param_id, u32 length, void *buffer) { struct opal_msg msg; - int ret, token; + ssize_t ret; + int token; token = opal_async_get_token_interruptible(); if (token < 0) { @@ -59,7 +60,7 @@ static int opal_get_sys_param(u32 param_id, u32 length, void *buffer) ret = opal_async_wait_response(token, &msg); if (ret) { - pr_err("%s: Failed to wait for the async response, %d\n", + pr_err("%s: Failed to wait for the async response, %zd\n", __func__, ret); goto out_token; } @@ -111,7 +112,7 @@ static ssize_t sys_param_show(struct kobject *kobj, { struct param_attr *attr = container_of(kobj_attr, struct param_attr, kobj_attr); - int ret; + ssize_t ret; mutex_lock(&opal_sysparam_mutex); ret = opal_get_sys_param(attr->param_id, attr->param_size, @@ -132,7 +133,7 @@ static ssize_t sys_param_store(struct kobject *kobj, { struct param_attr *attr = container_of(kobj_attr, struct param_attr, kobj_attr); - int ret; + ssize_t ret; mutex_lock(&opal_sysparam_mutex); memcpy(param_data_buf, buf, count); From 85390378f0a6abf3bdb10c3d504d77862a2d0ec9 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Thu, 24 Apr 2014 16:55:35 +0930 Subject: [PATCH 429/623] powerpc/powernv: Check sysfs size before copying The sysparam code currently uses the userspace supplied number of bytes when memcpy()ing in to a local 64-byte buffer. Limit the maximum number of bytes by the size of the buffer. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-sysparam.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index 0675e1a90b40..83f5f2a1c563 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -135,6 +135,10 @@ static ssize_t sys_param_store(struct kobject *kobj, kobj_attr); ssize_t ret; + /* MAX_PARAM_DATA_LEN is sizeof(param_data_buf) */ + if (count > MAX_PARAM_DATA_LEN) + count = MAX_PARAM_DATA_LEN; + mutex_lock(&opal_sysparam_mutex); memcpy(param_data_buf, buf, count); ret = opal_set_sys_param(attr->param_id, attr->param_size, From 16003d235bdb4d1ebcecfe4915c6e6d8c95f4a0c Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Thu, 24 Apr 2014 16:55:36 +0930 Subject: [PATCH 430/623] powerpc/powernv: Fix typos in sysparam code Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-sysparam.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index 83f5f2a1c563..c59e77a84721 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -222,13 +222,13 @@ void __init opal_sys_param_init(void) } if (of_property_read_u32_array(sysparam, "param-len", size, count)) { - pr_err("SYSPARAM: Missing propery param-len in the DT\n"); + pr_err("SYSPARAM: Missing property param-len in the DT\n"); goto out_free_perm; } if (of_property_read_u8_array(sysparam, "param-perm", perm, count)) { - pr_err("SYSPARAM: Missing propery param-perm in the DT\n"); + pr_err("SYSPARAM: Missing property param-perm in the DT\n"); goto out_free_perm; } From 63aecfb20a6629f1ca91d7a052f87988ceb6dd53 Mon Sep 17 00:00:00 2001 From: Joel Stanley Date: Thu, 24 Apr 2014 16:55:37 +0930 Subject: [PATCH 431/623] powerpc/powernv: Check sysparam size before creation The size of the sysparam sysfs files is determined from the device tree at boot. However the buffer is hard coded to 64 bytes. If we encounter a parameter that is larger than 64, or miss-parse the device tree, the buffer will overflow when reading or writing to the parameter. Check it at discovery time, and if the parameter is too large, do not create a sysfs entry for it. Signed-off-by: Joel Stanley Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-sysparam.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index c59e77a84721..d202f9bc3683 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -241,6 +241,12 @@ void __init opal_sys_param_init(void) /* For each of the parameters, populate the parameter attributes */ for (i = 0; i < count; i++) { + if (size[i] > MAX_PARAM_DATA_LEN) { + pr_warn("SYSPARAM: Not creating parameter %d as size " + "exceeds buffer length\n", i); + continue; + } + sysfs_attr_init(&attr[i].kobj_attr.attr); attr[i].param_id = id[i]; attr[i].param_size = size[i]; From 298b34d7d578c3b4325248b823f3d83a8ea1541c Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 24 Apr 2014 16:14:25 +1000 Subject: [PATCH 432/623] powerpc/powernv: Fix kexec races going back to OPAL We have a subtle race when sending CPUs back to OPAL on kexec. We mark them as "in real mode" right before we send them down. Once we've booted the new kernel, it might try to call opal_reinit_cpus() to change endianness, and that requires all CPUs to be spinning inside OPAL. However there is no synchronization here and we've observed cases where the returning CPUs hadn't established their new state inside OPAL before opal_reinit_cpus() is called, causing it to fail. The proper fix is to actually wait for them to go down all the way from the kexec'ing kernel. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/setup.c | 48 ++++++++++++++++++++++++-- 1 file changed, 46 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c index 61cf8fa9c61b..8723d32632f5 100644 --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -162,18 +162,62 @@ static void pnv_shutdown(void) } #ifdef CONFIG_KEXEC +static void pnv_kexec_wait_secondaries_down(void) +{ + int my_cpu, i, notified = -1; + + my_cpu = get_cpu(); + + for_each_online_cpu(i) { + uint8_t status; + int64_t rc; + + if (i == my_cpu) + continue; + + for (;;) { + rc = opal_query_cpu_status(get_hard_smp_processor_id(i), + &status); + if (rc != OPAL_SUCCESS || status != OPAL_THREAD_STARTED) + break; + barrier(); + if (i != notified) { + printk(KERN_INFO "kexec: waiting for cpu %d " + "(physical %d) to enter OPAL\n", + i, paca[i].hw_cpu_id); + notified = i; + } + } + } +} + static void pnv_kexec_cpu_down(int crash_shutdown, int secondary) { xics_kexec_teardown_cpu(secondary); - /* Return secondary CPUs to firmware on OPAL v3 */ - if (firmware_has_feature(FW_FEATURE_OPALv3) && secondary) { + /* On OPAL v3, we return all CPUs to firmware */ + + if (!firmware_has_feature(FW_FEATURE_OPALv3)) + return; + + if (secondary) { + /* Return secondary CPUs to firmware on OPAL v3 */ mb(); get_paca()->kexec_state = KEXEC_STATE_REAL_MODE; mb(); /* Return the CPU to OPAL */ opal_return_cpu(); + } else if (crash_shutdown) { + /* + * On crash, we don't wait for secondaries to go + * down as they might be unreachable or hung, so + * instead we just wait a bit and move on. + */ + mdelay(1); + } else { + /* Primary waits for the secondaries to have reached OPAL */ + pnv_kexec_wait_secondaries_down(); } } #endif /* CONFIG_KEXEC */ From cc146d1db0673396429ce4f906350d684ef4ca2a Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Thu, 24 Apr 2014 07:25:34 +1000 Subject: [PATCH 433/623] powerpc/powernv: Fix little endian issues in OPAL flash code With this patch I was able to update firmware on an LE kernel. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-flash.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal-flash.c b/arch/powerpc/platforms/powernv/opal-flash.c index 714ef972406b..a968fd1888b3 100644 --- a/arch/powerpc/platforms/powernv/opal-flash.c +++ b/arch/powerpc/platforms/powernv/opal-flash.c @@ -131,11 +131,15 @@ static DEFINE_MUTEX(image_data_mutex); */ static inline void opal_flash_validate(void) { - struct validate_flash_t *args_buf = &validate_flash_data; + long ret; + void *buf = validate_flash_data.buf; + __be32 size, result; - args_buf->status = opal_validate_flash(__pa(args_buf->buf), - &(args_buf->buf_size), - &(args_buf->result)); + ret = opal_validate_flash(__pa(buf), &size, &result); + + validate_flash_data.status = ret; + validate_flash_data.buf_size = be32_to_cpu(size); + validate_flash_data.result = be32_to_cpu(result); } /* From 3f28c5af3964c11e61e9a58df77cae5ebdb8209e Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Wed, 23 Apr 2014 10:26:32 +0800 Subject: [PATCH 434/623] powerpc/powernv: Reduce multi-hit of iommu_add_device() During the EEH hotplug event, iommu_add_device() will be invoked three times and two of them will trigger warning or error. The three times to invoke the iommu_add_device() are: pci_device_add ... set_iommu_table_base_and_group <- 1st time, fail device_add ... tce_iommu_bus_notifier <- 2nd time, succees pcibios_add_pci_devices ... pcibios_setup_bus_devices <- 3rd time, re-attach The first time fails, since the dev->kobj->sd is not initialized. The dev->kobj->sd is initialized in device_add(). The third time's warning is triggered by the re-attach of the iommu_group. After applying this patch, the error iommu_tce: 0003:05:00.0 has not been added, ret=-14 and the warning [ 204.123609] ------------[ cut here ]------------ [ 204.123645] WARNING: at arch/powerpc/kernel/iommu.c:1125 [ 204.123680] Modules linked in: xt_CHECKSUM nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE ip6t_REJECT bnep bluetooth 6lowpan_iphc rfkill xt_conntrack ebtable_nat ebtable_broute bridge stp llc mlx4_ib ib_sa ib_mad ib_core ib_addr ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnx2x tg3 mlx4_core nfsd ptp mdio ses libcrc32c nfs_acl enclosure be2net pps_core shpchp lockd kvm uinput sunrpc binfmt_misc lpfc scsi_transport_fc ipr scsi_tgt [ 204.124356] CPU: 18 PID: 650 Comm: eehd Not tainted 3.14.0-rc5yw+ #102 [ 204.124400] task: c0000027ed485670 ti: c0000027ed50c000 task.ti: c0000027ed50c000 [ 204.124453] NIP: c00000000003cf80 LR: c00000000006c648 CTR: c00000000006c5c0 [ 204.124506] REGS: c0000027ed50f440 TRAP: 0700 Not tainted (3.14.0-rc5yw+) [ 204.124558] MSR: 9000000000029032 CR: 88008084 XER: 20000000 [ 204.124682] CFAR: c00000000006c644 SOFTE: 1 GPR00: c00000000006c648 c0000027ed50f6c0 c000000001398380 c0000027ec260300 GPR04: c0000027ea92c000 c00000000006ad00 c0000000016e41b0 0000000000000110 GPR08: c0000000012cd4c0 0000000000000001 c0000027ec2602ff 0000000000000062 GPR12: 0000000028008084 c00000000fdca200 c0000000000d1d90 c0000027ec281a80 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000001 GPR24: 000000005342697b 0000000000002906 c000001fe6ac9800 c000001fe6ac9800 GPR28: 0000000000000000 c0000000016e3a80 c0000027ea92c090 c0000027ea92c000 [ 204.125353] NIP [c00000000003cf80] .iommu_add_device+0x30/0x1f0 [ 204.125399] LR [c00000000006c648] .pnv_pci_ioda_dma_dev_setup+0x88/0xb0 [ 204.125443] Call Trace: [ 204.125464] [c0000027ed50f6c0] [c0000027ed50f750] 0xc0000027ed50f750 (unreliable) [ 204.125526] [c0000027ed50f750] [c00000000006c648] .pnv_pci_ioda_dma_dev_setup+0x88/0xb0 [ 204.125588] [c0000027ed50f7d0] [c000000000069cc8] .pnv_pci_dma_dev_setup+0x78/0x340 [ 204.125650] [c0000027ed50f870] [c000000000044408] .pcibios_setup_device+0x88/0x2f0 [ 204.125712] [c0000027ed50f940] [c000000000046040] .pcibios_setup_bus_devices+0x60/0xd0 [ 204.125774] [c0000027ed50f9c0] [c000000000043acc] .pcibios_add_pci_devices+0xdc/0x1c0 [ 204.125837] [c0000027ed50fa50] [c00000000086f970] .eeh_reset_device+0x36c/0x4f0 [ 204.125939] [c0000027ed50fb20] [c00000000003a2d8] .eeh_handle_normal_event+0x448/0x480 [ 204.126068] [c0000027ed50fbc0] [c00000000003a35c] .eeh_handle_event+0x4c/0x340 [ 204.126192] [c0000027ed50fc80] [c00000000003a74c] .eeh_event_handler+0xfc/0x1b0 [ 204.126319] [c0000027ed50fd30] [c0000000000d1ea0] .kthread+0x110/0x130 [ 204.126430] [c0000027ed50fe30] [c00000000000a460] .ret_from_kernel_thread+0x5c/0x7c [ 204.126556] Instruction dump: [ 204.126610] 7c0802a6 fba1ffe8 fbc1fff0 fbe1fff8 f8010010 f821ff71 7c7e1b78 60000000 [ 204.126787] 60000000 e87e0298 3143ffff 7d2a1910 <0b090000> 2fa90000 40de00c8 ebfe0218 [ 204.126966] ---[ end trace 6e7aefd80add2973 ]--- are cleared. This patch removes iommu_add_device() in pnv_pci_ioda_dma_dev_setup(), which revert part of the change in commit d905c5df(PPC: POWERNV: move iommu_add_device earlier). Signed-off-by: Wei Yang Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/pci-ioda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 3b2b4fb3585b..1d992f137c48 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -462,7 +462,7 @@ static void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev pe = &phb->ioda.pe_array[pdn->pe_number]; WARN_ON(get_dma_ops(&pdev->dev) != &dma_iommu_ops); - set_iommu_table_base_and_group(&pdev->dev, &pe->tce32_table); + set_iommu_table_base(&pdev->dev, &pe->tce32_table); } static int pnv_pci_ioda_dma_set_mask(struct pnv_phb *phb, From 4966bfa1b3347ee75e6d93859a2e8ce9a662390c Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Wed, 23 Apr 2014 10:26:33 +0800 Subject: [PATCH 435/623] powerpc/powernv: Release the refcount for pci_dev On PowerNV platform, we are holding an unnecessary refcount on a pci_dev, which leads to the pci_dev is not destroyed when hotplugging a pci device. This patch release the unnecessary refcount. Signed-off-by: Wei Yang Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/pci-ioda.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 1d992f137c48..98824aa99173 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -343,7 +343,6 @@ static void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe) pci_name(dev)); continue; } - pci_dev_get(dev); pdn->pcidev = dev; pdn->pe_number = pe->pe_number; pe->dma_weight += pnv_ioda_dma_weight(dev); From 2bad742388d23c15f2cb355bb992046e30065a11 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:22 +1000 Subject: [PATCH 436/623] powerpc/powernv: Use uint64_t instead of size_t in OPAL APIs Using size_t in our APIs is asking for trouble, especially when some OPAL calls use size_t pointers. Signed-off-by: Anton Blanchard Reviewed-by: Stewart Smith Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 12 ++++++------ arch/powerpc/platforms/powernv/opal-elog.c | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index a2efdaa020b0..2a34485f7e0a 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -858,8 +858,8 @@ int64_t opal_lpc_write(uint32_t chip_id, enum OpalLPCAddressType addr_type, int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type, uint32_t addr, __be32 *data, uint32_t sz); -int64_t opal_read_elog(uint64_t buffer, size_t size, uint64_t log_id); -int64_t opal_get_elog_size(uint64_t *log_id, size_t *size, uint64_t *elog_type); +int64_t opal_read_elog(uint64_t buffer, uint64_t size, uint64_t log_id); +int64_t opal_get_elog_size(uint64_t *log_id, uint64_t *size, uint64_t *elog_type); int64_t opal_write_elog(uint64_t buffer, uint64_t size, uint64_t offset); int64_t opal_send_ack_elog(uint64_t log_id); void opal_resend_pending_logs(void); @@ -874,13 +874,13 @@ int64_t opal_dump_read(uint32_t dump_id, uint64_t buffer); int64_t opal_dump_ack(uint32_t dump_id); int64_t opal_dump_resend_notification(void); -int64_t opal_get_msg(uint64_t buffer, size_t size); -int64_t opal_check_completion(uint64_t buffer, size_t size, uint64_t token); +int64_t opal_get_msg(uint64_t buffer, uint64_t size); +int64_t opal_check_completion(uint64_t buffer, uint64_t size, uint64_t token); int64_t opal_sync_host_reboot(void); int64_t opal_get_param(uint64_t token, uint32_t param_id, uint64_t buffer, - size_t length); + uint64_t length); int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer, - size_t length); + uint64_t length); int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data); /* Internal functions */ diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index ef7bc2a97862..7e3821e611a8 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -238,7 +238,7 @@ static struct elog_obj *create_elog_obj(uint64_t id, size_t size, uint64_t type) static void elog_work_fn(struct work_struct *work) { - size_t elog_size; + uint64_t elog_size; uint64_t log_id; uint64_t elog_type; int rc; From e2c8b93e65935498d9bd419cec900221ace70c5b Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:23 +1000 Subject: [PATCH 437/623] powerpc/powernv: Remove some OPAL function declaration duplication We had some duplication of the internal OPAL functions. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 2a34485f7e0a..cb7d52ed86d2 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -884,7 +884,8 @@ int64_t opal_set_param(uint64_t token, uint32_t param_id, uint64_t buffer, int64_t opal_sensor_read(uint32_t sensor_hndl, int token, __be32 *sensor_data); /* Internal functions */ -extern int early_init_dt_scan_opal(unsigned long node, const char *uname, int depth, void *data); +extern int early_init_dt_scan_opal(unsigned long node, const char *uname, + int depth, void *data); extern int early_init_dt_scan_recoverable_ranges(unsigned long node, const char *uname, int depth, void *data); @@ -893,10 +894,6 @@ extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len); extern void hvc_opal_init_early(void); -/* Internal functions */ -extern int early_init_dt_scan_opal(unsigned long node, const char *uname, - int depth, void *data); - extern int opal_notifier_register(struct notifier_block *nb); extern int opal_notifier_unregister(struct notifier_block *nb); @@ -906,9 +903,6 @@ extern void opal_notifier_enable(void); extern void opal_notifier_disable(void); extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val); -extern int opal_get_chars(uint32_t vtermno, char *buf, int count); -extern int opal_put_chars(uint32_t vtermno, const char *buf, int total_len); - extern int __opal_async_get_token(void); extern int opal_async_get_token_interruptible(void); extern int __opal_async_release_token(int token); @@ -916,8 +910,6 @@ extern int opal_async_release_token(int token); extern int opal_async_wait_response(uint64_t token, struct opal_msg *msg); extern int opal_get_sensor_data(u32 sensor_hndl, u32 *sensor_data); -extern void hvc_opal_init_early(void); - struct rtc_time; extern int opal_set_rtc_time(struct rtc_time *tm); extern void opal_get_rtc_time(struct rtc_time *tm); From 56b4c993124d15f3b198cc757ba49a0022b5d695 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:24 +1000 Subject: [PATCH 438/623] powerpc/powernv: Fix little endian issues with opal_do_notifier calls The bitmap in opal_poll_events and opal_handle_interrupt is big endian, so we need to byteswap it on little endian builds. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 49d2f00019e5..17cfc70082aa 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -242,14 +242,14 @@ void opal_notifier_update_evt(uint64_t evt_mask, void opal_notifier_enable(void) { int64_t rc; - uint64_t evt = 0; + __be64 evt = 0; atomic_set(&opal_notifier_hold, 0); /* Process pending events */ rc = opal_poll_events(&evt); if (rc == OPAL_SUCCESS && evt) - opal_do_notifier(evt); + opal_do_notifier(be64_to_cpu(evt)); } void opal_notifier_disable(void) @@ -529,7 +529,7 @@ static irqreturn_t opal_interrupt(int irq, void *data) opal_handle_interrupt(virq_to_hw(irq), &events); - opal_do_notifier(events); + opal_do_notifier(be64_to_cpu(events)); return IRQ_HANDLED; } From 14ad0c58d5df6e5911a5413abdc2a9be6a8acb51 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:25 +1000 Subject: [PATCH 439/623] powerpc/powernv: Fix little endian issues in OPAL error log code Fix little endian issues with the OPAL error log code. Signed-off-by: Anton Blanchard Reviewed-by: Stewart Smith Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 2 +- arch/powerpc/platforms/powernv/opal-elog.c | 9 ++++++++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index cb7d52ed86d2..1a752ac8c0ba 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -859,7 +859,7 @@ int64_t opal_lpc_read(uint32_t chip_id, enum OpalLPCAddressType addr_type, uint32_t addr, __be32 *data, uint32_t sz); int64_t opal_read_elog(uint64_t buffer, uint64_t size, uint64_t log_id); -int64_t opal_get_elog_size(uint64_t *log_id, uint64_t *size, uint64_t *elog_type); +int64_t opal_get_elog_size(__be64 *log_id, __be64 *size, __be64 *elog_type); int64_t opal_write_elog(uint64_t buffer, uint64_t size, uint64_t offset); int64_t opal_send_ack_elog(uint64_t log_id); void opal_resend_pending_logs(void); diff --git a/arch/powerpc/platforms/powernv/opal-elog.c b/arch/powerpc/platforms/powernv/opal-elog.c index 7e3821e611a8..10268c41d830 100644 --- a/arch/powerpc/platforms/powernv/opal-elog.c +++ b/arch/powerpc/platforms/powernv/opal-elog.c @@ -238,18 +238,25 @@ static struct elog_obj *create_elog_obj(uint64_t id, size_t size, uint64_t type) static void elog_work_fn(struct work_struct *work) { + __be64 size; + __be64 id; + __be64 type; uint64_t elog_size; uint64_t log_id; uint64_t elog_type; int rc; char name[2+16+1]; - rc = opal_get_elog_size(&log_id, &elog_size, &elog_type); + rc = opal_get_elog_size(&id, &size, &type); if (rc != OPAL_SUCCESS) { pr_err("ELOG: Opal log read failed\n"); return; } + elog_size = be64_to_cpu(size); + log_id = be64_to_cpu(id); + elog_type = be64_to_cpu(type); + BUG_ON(elog_size > OPAL_MAX_ERRLOG_SIZE); if (elog_size >= OPAL_MAX_ERRLOG_SIZE) From 3441f04b4b62758a798f9fbbf2047dfedf0329a5 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:26 +1000 Subject: [PATCH 440/623] powerpc/powernv: Create OPAL sglist helper functions and fix endian issues We have two copies of code that creates an OPAL sg list. Consolidate these into a common set of helpers and fix the endian issues. The flash interface embedded a version number in the num_entries field, whereas the dump interface did did not. Since versioning wasn't added to the flash interface and it is impossible to add this in a backwards compatible way, just remove it. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 14 ++- arch/powerpc/platforms/powernv/opal-dump.c | 81 +-------------- arch/powerpc/platforms/powernv/opal-flash.c | 106 +------------------- arch/powerpc/platforms/powernv/opal.c | 63 ++++++++++++ 4 files changed, 76 insertions(+), 188 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index 1a752ac8c0ba..afb0fedd1214 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -41,14 +41,14 @@ struct opal_takeover_args { * size except the last one in the list to be as well. */ struct opal_sg_entry { - void *data; - long length; + __be64 data; + __be64 length; }; -/* sg list */ +/* SG list */ struct opal_sg_list { - unsigned long num_entries; - struct opal_sg_list *next; + __be64 length; + __be64 next; struct opal_sg_entry entry[]; }; @@ -929,6 +929,10 @@ extern int opal_resync_timebase(void); extern void opal_lpc_init(void); +struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr, + unsigned long vmalloc_size); +void opal_free_sg_list(struct opal_sg_list *sg); + #endif /* __ASSEMBLY__ */ #endif /* __OPAL_H */ diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index b9827b0d87e4..f0b472427c57 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -209,80 +209,6 @@ static struct kobj_type dump_ktype = { .default_attrs = dump_default_attrs, }; -static void free_dump_sg_list(struct opal_sg_list *list) -{ - struct opal_sg_list *sg1; - while (list) { - sg1 = list->next; - kfree(list); - list = sg1; - } - list = NULL; -} - -static struct opal_sg_list *dump_data_to_sglist(struct dump_obj *dump) -{ - struct opal_sg_list *sg1, *list = NULL; - void *addr; - int64_t size; - - addr = dump->buffer; - size = dump->size; - - sg1 = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!sg1) - goto nomem; - - list = sg1; - sg1->num_entries = 0; - while (size > 0) { - /* Translate virtual address to physical address */ - sg1->entry[sg1->num_entries].data = - (void *)(vmalloc_to_pfn(addr) << PAGE_SHIFT); - - if (size > PAGE_SIZE) - sg1->entry[sg1->num_entries].length = PAGE_SIZE; - else - sg1->entry[sg1->num_entries].length = size; - - sg1->num_entries++; - if (sg1->num_entries >= SG_ENTRIES_PER_NODE) { - sg1->next = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!sg1->next) - goto nomem; - - sg1 = sg1->next; - sg1->num_entries = 0; - } - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - return list; - -nomem: - pr_err("%s : Failed to allocate memory\n", __func__); - free_dump_sg_list(list); - return NULL; -} - -static void sglist_to_phy_addr(struct opal_sg_list *list) -{ - struct opal_sg_list *sg, *next; - - for (sg = list; sg; sg = next) { - next = sg->next; - /* Don't translate NULL pointer for last entry */ - if (sg->next) - sg->next = (struct opal_sg_list *)__pa(sg->next); - else - sg->next = NULL; - - /* Convert num_entries to length */ - sg->num_entries = - sg->num_entries * sizeof(struct opal_sg_entry) + 16; - } -} - static int64_t dump_read_info(uint32_t *id, uint32_t *size, uint32_t *type) { int rc; @@ -314,15 +240,12 @@ static int64_t dump_read_data(struct dump_obj *dump) } /* Generate SG list */ - list = dump_data_to_sglist(dump); + list = opal_vmalloc_to_sg_list(dump->buffer, dump->size); if (!list) { rc = -ENOMEM; goto out; } - /* Translate sg list addr to real address */ - sglist_to_phy_addr(list); - /* First entry address */ addr = __pa(list); @@ -341,7 +264,7 @@ static int64_t dump_read_data(struct dump_obj *dump) __func__, dump->id); /* Free SG list */ - free_dump_sg_list(list); + opal_free_sg_list(list); out: return rc; diff --git a/arch/powerpc/platforms/powernv/opal-flash.c b/arch/powerpc/platforms/powernv/opal-flash.c index a968fd1888b3..dc487ff04704 100644 --- a/arch/powerpc/platforms/powernv/opal-flash.c +++ b/arch/powerpc/platforms/powernv/opal-flash.c @@ -79,9 +79,6 @@ /* XXX: Assume candidate image size is <= 1GB */ #define MAX_IMAGE_SIZE 0x40000000 -/* Flash sg list version */ -#define SG_LIST_VERSION (1UL) - /* Image status */ enum { IMAGE_INVALID, @@ -271,94 +268,12 @@ static ssize_t manage_store(struct kobject *kobj, return count; } -/* - * Free sg list - */ -static void free_sg_list(struct opal_sg_list *list) -{ - struct opal_sg_list *sg1; - while (list) { - sg1 = list->next; - kfree(list); - list = sg1; - } - list = NULL; -} - -/* - * Build candidate image scatter gather list - * - * list format: - * ----------------------------------- - * | VER (8) | Entry length in bytes | - * ----------------------------------- - * | Pointer to next entry | - * ----------------------------------- - * | Address of memory area 1 | - * ----------------------------------- - * | Length of memory area 1 | - * ----------------------------------- - * | ......... | - * ----------------------------------- - * | ......... | - * ----------------------------------- - * | Address of memory area N | - * ----------------------------------- - * | Length of memory area N | - * ----------------------------------- - */ -static struct opal_sg_list *image_data_to_sglist(void) -{ - struct opal_sg_list *sg1, *list = NULL; - void *addr; - int size; - - addr = image_data.data; - size = image_data.size; - - sg1 = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!sg1) - return NULL; - - list = sg1; - sg1->num_entries = 0; - while (size > 0) { - /* Translate virtual address to physical address */ - sg1->entry[sg1->num_entries].data = - (void *)(vmalloc_to_pfn(addr) << PAGE_SHIFT); - - if (size > PAGE_SIZE) - sg1->entry[sg1->num_entries].length = PAGE_SIZE; - else - sg1->entry[sg1->num_entries].length = size; - - sg1->num_entries++; - if (sg1->num_entries >= SG_ENTRIES_PER_NODE) { - sg1->next = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (!sg1->next) { - pr_err("%s : Failed to allocate memory\n", - __func__); - goto nomem; - } - - sg1 = sg1->next; - sg1->num_entries = 0; - } - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - return list; -nomem: - free_sg_list(list); - return NULL; -} - /* * OPAL update flash */ static int opal_flash_update(int op) { - struct opal_sg_list *sg, *list, *next; + struct opal_sg_list *list; unsigned long addr; int64_t rc = OPAL_PARAMETER; @@ -368,30 +283,13 @@ static int opal_flash_update(int op) goto flash; } - list = image_data_to_sglist(); + list = opal_vmalloc_to_sg_list(image_data.data, image_data.size); if (!list) goto invalid_img; /* First entry address */ addr = __pa(list); - /* Translate sg list address to absolute */ - for (sg = list; sg; sg = next) { - next = sg->next; - /* Don't translate NULL pointer for last entry */ - if (sg->next) - sg->next = (struct opal_sg_list *)__pa(sg->next); - else - sg->next = NULL; - - /* - * Convert num_entries to version/length format - * to satisfy OPAL. - */ - sg->num_entries = (SG_LIST_VERSION << 56) | - (sg->num_entries * sizeof(struct opal_sg_entry) + 16); - } - pr_alert("FLASH: Image is %u bytes\n", image_data.size); pr_alert("FLASH: Image update requested\n"); pr_alert("FLASH: Image will be updated during system reboot\n"); diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 17cfc70082aa..360ad80c754c 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -638,3 +638,66 @@ void opal_shutdown(void) /* Export this so that test modules can use it */ EXPORT_SYMBOL_GPL(opal_invalid_call); + +/* Convert a region of vmalloc memory to an opal sg list */ +struct opal_sg_list *opal_vmalloc_to_sg_list(void *vmalloc_addr, + unsigned long vmalloc_size) +{ + struct opal_sg_list *sg, *first = NULL; + unsigned long i = 0; + + sg = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!sg) + goto nomem; + + first = sg; + + while (vmalloc_size > 0) { + uint64_t data = vmalloc_to_pfn(vmalloc_addr) << PAGE_SHIFT; + uint64_t length = min(vmalloc_size, PAGE_SIZE); + + sg->entry[i].data = cpu_to_be64(data); + sg->entry[i].length = cpu_to_be64(length); + i++; + + if (i >= SG_ENTRIES_PER_NODE) { + struct opal_sg_list *next; + + next = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!next) + goto nomem; + + sg->length = cpu_to_be64( + i * sizeof(struct opal_sg_entry) + 16); + i = 0; + sg->next = cpu_to_be64(__pa(next)); + sg = next; + } + + vmalloc_addr += length; + vmalloc_size -= length; + } + + sg->length = cpu_to_be64(i * sizeof(struct opal_sg_entry) + 16); + + return first; + +nomem: + pr_err("%s : Failed to allocate memory\n", __func__); + opal_free_sg_list(first); + return NULL; +} + +void opal_free_sg_list(struct opal_sg_list *sg) +{ + while (sg) { + uint64_t next = be64_to_cpu(sg->next); + + kfree(sg); + + if (next) + sg = __va(next); + else + sg = NULL; + } +} From 2d6b63bbdd7a649ea17fae19f8bab07d4b292a09 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 22 Apr 2014 15:01:27 +1000 Subject: [PATCH 441/623] powerpc/powernv: Fix little endian issues in OPAL dump code Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/opal.h | 4 ++-- arch/powerpc/platforms/powernv/opal-dump.c | 13 +++++++++---- 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index afb0fedd1214..66ad7a74116f 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -868,8 +868,8 @@ int64_t opal_validate_flash(uint64_t buffer, uint32_t *size, uint32_t *result); int64_t opal_manage_flash(uint8_t op); int64_t opal_update_flash(uint64_t blk_list); int64_t opal_dump_init(uint8_t dump_type); -int64_t opal_dump_info(uint32_t *dump_id, uint32_t *dump_size); -int64_t opal_dump_info2(uint32_t *dump_id, uint32_t *dump_size, uint32_t *dump_type); +int64_t opal_dump_info(__be32 *dump_id, __be32 *dump_size); +int64_t opal_dump_info2(__be32 *dump_id, __be32 *dump_size, __be32 *dump_type); int64_t opal_dump_read(uint32_t dump_id, uint64_t buffer); int64_t opal_dump_ack(uint32_t dump_id); int64_t opal_dump_resend_notification(void); diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index f0b472427c57..788a1977b9a5 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -209,15 +209,20 @@ static struct kobj_type dump_ktype = { .default_attrs = dump_default_attrs, }; -static int64_t dump_read_info(uint32_t *id, uint32_t *size, uint32_t *type) +static int64_t dump_read_info(uint32_t *dump_id, uint32_t *dump_size, uint32_t *dump_type) { + __be32 id, size, type; int rc; - *type = 0xffffffff; - rc = opal_dump_info2(id, size, type); + type = cpu_to_be32(0xffffffff); + rc = opal_dump_info2(&id, &size, &type); if (rc == OPAL_PARAMETER) - rc = opal_dump_info(id, size); + rc = opal_dump_info(&id, &size); + + *dump_id = be32_to_cpu(id); + *dump_size = be32_to_cpu(size); + *dump_type = be32_to_cpu(type); if (rc) pr_warn("%s: Failed to get dump info (%d)\n", From 29ef7a3e26283606f181000b11e5fd37d73ab98f Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 21 Apr 2014 10:37:36 +0530 Subject: [PATCH 442/623] powerpc/mm: Fix tlbie to add AVAL fields for 64K pages The if condition check was based on a draft ISA doc. Remove the same. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/hash_native_64.c | 38 ++++++++++++++------------------ 1 file changed, 16 insertions(+), 22 deletions(-) diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index 3ea26c25590b..cf1d325eae8b 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -82,17 +82,14 @@ static inline void __tlbie(unsigned long vpn, int psize, int apsize, int ssize) va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1); va |= penc << 12; va |= ssize << 8; - /* Add AVAL part */ - if (psize != apsize) { - /* - * MPSS, 64K base page size and 16MB parge page size - * We don't need all the bits, but rest of the bits - * must be ignored by the processor. - * vpn cover upto 65 bits of va. (0...65) and we need - * 58..64 bits of va. - */ - va |= (vpn & 0xfe); - } + /* + * AVAL bits: + * We don't need all the bits, but rest of the bits + * must be ignored by the processor. + * vpn cover upto 65 bits of va. (0...65) and we need + * 58..64 bits of va. + */ + va |= (vpn & 0xfe); /* AVAL */ va |= 1; /* L */ asm volatile(ASM_FTR_IFCLR("tlbie %0,1", PPC_TLBIE(%1,%0), %2) : : "r" (va), "r"(0), "i" (CPU_FTR_ARCH_206) @@ -133,17 +130,14 @@ static inline void __tlbiel(unsigned long vpn, int psize, int apsize, int ssize) va &= ~((1ul << mmu_psize_defs[apsize].shift) - 1); va |= penc << 12; va |= ssize << 8; - /* Add AVAL part */ - if (psize != apsize) { - /* - * MPSS, 64K base page size and 16MB parge page size - * We don't need all the bits, but rest of the bits - * must be ignored by the processor. - * vpn cover upto 65 bits of va. (0...65) and we need - * 58..64 bits of va. - */ - va |= (vpn & 0xfe); - } + /* + * AVAL bits: + * We don't need all the bits, but rest of the bits + * must be ignored by the processor. + * vpn cover upto 65 bits of va. (0...65) and we need + * 58..64 bits of va. + */ + va |= (vpn & 0xfe); va |= 1; /* L */ asm volatile(".long 0x7c000224 | (%0 << 11) | (1 << 21)" : : "r"(va) : "memory"); From e98bf005d5feafb3a089868420c1f3743d304e14 Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:50 -0700 Subject: [PATCH 443/623] powerpc/perf/hv_24x7: Probe errors changed to pr_debug(), padding fixed fixup for "powerpc/perf: Add support for the hv 24x7 interface" Makes the "not enabled" message less awful (and hides it in most cases). Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-24x7.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 297c91051413..f5bca73d92b8 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -485,13 +485,13 @@ static int hv_24x7_init(void) struct hv_perf_caps caps; if (!firmware_has_feature(FW_FEATURE_LPAR)) { - pr_info("not a virtualized system, not enabling\n"); + pr_debug("not a virtualized system, not enabling\n"); return -ENODEV; } hret = hv_perf_caps_get(&caps); if (hret) { - pr_info("could not obtain capabilities, error 0x%80lx, not enabling\n", + pr_debug("could not obtain capabilities, not enabling, rc=%ld\n", hret); return -ENODEV; } From 0a8cf9e28c094cd934deaedfd3ec07830f2a63cf Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:51 -0700 Subject: [PATCH 444/623] powerpc/perf/hv_gpci: Probe failures use pr_debug(), and padding reduced fixup for "powerpc/perf: Add support for the hv gpci (get performance counter info) interface". Makes the "not enabled" message less awful (and hidden unless debugging). Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-gpci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c index 278ba7b9c2b5..8fee1dccaaec 100644 --- a/arch/powerpc/perf/hv-gpci.c +++ b/arch/powerpc/perf/hv-gpci.c @@ -273,13 +273,13 @@ static int hv_gpci_init(void) struct hv_perf_caps caps; if (!firmware_has_feature(FW_FEATURE_LPAR)) { - pr_info("not a virtualized system, not enabling\n"); + pr_debug("not a virtualized system, not enabling\n"); return -ENODEV; } hret = hv_perf_caps_get(&caps); if (hret) { - pr_info("could not obtain capabilities, error 0x%80lx, not enabling\n", + pr_debug("could not obtain capabilities, not enabling, rc=%ld\n", hret); return -ENODEV; } From 58a685c2d8f0616b5c6cfa0f7a9f2d081af3c6fd Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:52 -0700 Subject: [PATCH 445/623] powerpc/perf/hv-gpci: Make device attr static Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-gpci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c index 8fee1dccaaec..c9d399a2df82 100644 --- a/arch/powerpc/perf/hv-gpci.c +++ b/arch/powerpc/perf/hv-gpci.c @@ -78,7 +78,7 @@ static ssize_t kernel_version_show(struct device *dev, return sprintf(page, "0x%x\n", COUNTER_INFO_VERSION_CURRENT); } -DEVICE_ATTR_RO(kernel_version); +static DEVICE_ATTR_RO(kernel_version); HV_CAPS_ATTR(version, "0x%x\n"); HV_CAPS_ATTR(ga, "%d\n"); HV_CAPS_ATTR(expanded, "%d\n"); From 78d13166b189ff1741327d748a7f8d73e65d70bd Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:53 -0700 Subject: [PATCH 446/623] powerpc/perf/hv-24x7: Use (unsigned long) not (u32) values when calling plpar_hcall_norets() Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-24x7.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index f5bca73d92b8..3e8f60a1d53f 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -155,14 +155,26 @@ static ssize_t read_offset_data(void *dest, size_t dest_len, return copy_len; } +static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096, + unsigned long version, + unsigned long index) +{ + pr_devel("h_get_24x7_catalog_page(0x%lx, %lu, %lu)", + phys_4096, + version, + index); + WARN_ON(!IS_ALIGNED(phys_4096, 4096)); + return plpar_hcall_norets(H_GET_24X7_CATALOG_PAGE, + phys_4096, + version, + index); +} + static unsigned long h_get_24x7_catalog_page(char page[static 4096], u32 version, u32 index) { - WARN_ON(!IS_ALIGNED((unsigned long)page, 4096)); - return plpar_hcall_norets(H_GET_24X7_CATALOG_PAGE, - virt_to_phys(page), - version, - index); + return h_get_24x7_catalog_page_(virt_to_phys(page), + version, index); } static ssize_t catalog_read(struct file *filp, struct kobject *kobj, From 1ee9fcc1a021e54454a23b107a47d10fb603508c Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:54 -0700 Subject: [PATCH 447/623] powerpc/perf/hv-24x7: Remove [static 4096], sparse chokes on it Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-24x7.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 3e8f60a1d53f..95a67f81f22a 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -170,7 +170,7 @@ static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096, index); } -static unsigned long h_get_24x7_catalog_page(char page[static 4096], +static unsigned long h_get_24x7_catalog_page(char page[], u32 version, u32 index) { return h_get_24x7_catalog_page_(virt_to_phys(page), From ddcde142bed44490e338ed1124cb149976d355bb Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Sat, 26 Apr 2014 21:18:32 +0200 Subject: [PATCH 448/623] slip: fix spinlock variant With commit cc9fa74e2a ("slip/slcan: added locking in wakeup function") a formerly missing locking was added to slip.c and slcan.c by Andre Naujoks. Alexander Stein contributed the fix 367525c8c2 ("can: slcan: Fix spinlock variant") as the kernel lock debugging advised to use spin_lock_bh() instead of just using spin_lock(). This fix has to be applied to the same code section in slip.c for the same reason too. Signed-off-by: Oliver Hartkopp Signed-off-by: David S. Miller --- drivers/net/slip/slip.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c index cc70ecfc7062..ad4a94e9ff57 100644 --- a/drivers/net/slip/slip.c +++ b/drivers/net/slip/slip.c @@ -429,13 +429,13 @@ static void slip_write_wakeup(struct tty_struct *tty) if (!sl || sl->magic != SLIP_MAGIC || !netif_running(sl->dev)) return; - spin_lock(&sl->lock); + spin_lock_bh(&sl->lock); if (sl->xleft <= 0) { /* Now serial buffer is almost free & we can start * transmission of another packet */ sl->dev->stats.tx_packets++; clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); - spin_unlock(&sl->lock); + spin_unlock_bh(&sl->lock); sl_unlock(sl); return; } @@ -443,7 +443,7 @@ static void slip_write_wakeup(struct tty_struct *tty) actual = tty->ops->write(tty, sl->xhead, sl->xleft); sl->xleft -= actual; sl->xhead += actual; - spin_unlock(&sl->lock); + spin_unlock_bh(&sl->lock); } static void sl_tx_timeout(struct net_device *dev) From 8c2eab9097dba50bcd73ed4632baccc3f34857f9 Mon Sep 17 00:00:00 2001 From: Karl Heiss Date: Fri, 25 Apr 2014 14:26:30 -0400 Subject: [PATCH 449/623] net: sctp: Don't transition to PF state when transport has exhausted 'Path.Max.Retrans'. Don't transition to the PF state on every strike after 'Path.Max.Retrans'. Per draft-ietf-tsvwg-sctp-failover-03 Section 5.1.6: Additional (PMR - PFMR) consecutive timeouts on a PF destination confirm the path failure, upon which the destination transitions to the Inactive state. As described in [RFC4960], the sender (i) SHOULD notify ULP about this state transition, and (ii) transmit heartbeats to the Inactive destination at a lower frequency as described in Section 8.3 of [RFC4960]. This also prevents sending SCTP_ADDR_UNREACHABLE to the user as the state bounces between SCTP_INACTIVE and SCTP_PF for each subsequent strike. Signed-off-by: Karl Heiss Acked-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/sm_sideeffect.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index 5d6883ff00c3..fef2acdf4a2e 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -496,11 +496,10 @@ static void sctp_do_8_2_transport_strike(sctp_cmd_seq_t *commands, /* If the transport error count is greater than the pf_retrans * threshold, and less than pathmaxrtx, and if the current state - * is not SCTP_UNCONFIRMED, then mark this transport as Partially - * Failed, see SCTP Quick Failover Draft, section 5.1 + * is SCTP_ACTIVE, then mark this transport as Partially Failed, + * see SCTP Quick Failover Draft, section 5.1 */ - if ((transport->state != SCTP_PF) && - (transport->state != SCTP_UNCONFIRMED) && + if ((transport->state == SCTP_ACTIVE) && (asoc->pf_retrans < transport->pathmaxrxt) && (transport->error_count > asoc->pf_retrans)) { From bbad3e50e8ed2d48294c141e687d411430cacbcf Mon Sep 17 00:00:00 2001 From: Cody P Schafer Date: Tue, 15 Apr 2014 10:10:55 -0700 Subject: [PATCH 450/623] powerpc/perf/hv-24x7: Catalog version number is be64, not be32 The catalog version number was changed from a be32 (with proceeding 32bits of padding) to a be64, update the code to treat it as a be64 Signed-off-by: Cody P Schafer Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/perf/hv-24x7.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 95a67f81f22a..e0766b82e165 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -171,7 +171,7 @@ static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096, } static unsigned long h_get_24x7_catalog_page(char page[], - u32 version, u32 index) + u64 version, u32 index) { return h_get_24x7_catalog_page_(virt_to_phys(page), version, index); @@ -185,7 +185,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, ssize_t ret = 0; size_t catalog_len = 0, catalog_page_len = 0, page_count = 0; loff_t page_offset = 0; - uint32_t catalog_version_num = 0; + uint64_t catalog_version_num = 0; void *page = kmem_cache_alloc(hv_page_cache, GFP_USER); struct hv_24x7_catalog_page_0 *page_0 = page; if (!page) @@ -197,7 +197,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, goto e_free; } - catalog_version_num = be32_to_cpu(page_0->version); + catalog_version_num = be64_to_cpu(page_0->version); catalog_page_len = be32_to_cpu(page_0->length); catalog_len = catalog_page_len * 4096; @@ -220,8 +220,9 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj, page, 4096, page_offset * 4096); e_free: if (hret) - pr_err("h_get_24x7_catalog_page(ver=%d, page=%lld) failed: rc=%ld\n", - catalog_version_num, page_offset, hret); + pr_err("h_get_24x7_catalog_page(ver=%lld, page=%lld) failed:" + " rc=%ld\n", + catalog_version_num, page_offset, hret); kfree(page); pr_devel("catalog_read: offset=%lld(%lld) count=%zu(%zu) catalog_len=%zu(%zu) => %zd\n", @@ -255,7 +256,7 @@ e_free: \ static DEVICE_ATTR_RO(_name) PAGE_0_ATTR(catalog_version, "%lld\n", - (unsigned long long)be32_to_cpu(page_0->version)); + (unsigned long long)be64_to_cpu(page_0->version)); PAGE_0_ATTR(catalog_len, "%lld\n", (unsigned long long)be32_to_cpu(page_0->length) * 4096); static BIN_ATTR_RO(catalog, 0/* real length varies */); From a2dd5da77f2cc9fc9ff11ea6b699556254e94a6c Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 14 Apr 2014 21:54:05 +1000 Subject: [PATCH 451/623] powerpc: Rename duplicate COMMAND_LINE_SIZE define We have two definitions of COMMAND_LINE_SIZE, one for the kernel and one for the boot wrapper. I assume this is so the boot wrapper can be self sufficient and not rely on kernel headers. Having two defines with the same name is confusing, I just updated the wrong one when trying to bump it. Make the boot wrapper define unique by calling it BOOT_COMMAND_LINE_SIZE. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/boot/main.c | 8 ++++---- arch/powerpc/boot/ops.h | 2 +- arch/powerpc/boot/ps3.c | 4 ++-- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c index a28f02165e97..d367a0aece2a 100644 --- a/arch/powerpc/boot/main.c +++ b/arch/powerpc/boot/main.c @@ -139,18 +139,18 @@ static struct addr_range prep_initrd(struct addr_range vmlinux, void *chosen, * edit the command line passed to vmlinux (by setting /chosen/bootargs). * The buffer is put in it's own section so that tools may locate it easier. */ -static char cmdline[COMMAND_LINE_SIZE] +static char cmdline[BOOT_COMMAND_LINE_SIZE] __attribute__((__section__("__builtin_cmdline"))); static void prep_cmdline(void *chosen) { if (cmdline[0] == '\0') - getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1); + getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1); printf("\n\rLinux/PowerPC load: %s", cmdline); /* If possible, edit the command line */ if (console_ops.edit_cmdline) - console_ops.edit_cmdline(cmdline, COMMAND_LINE_SIZE); + console_ops.edit_cmdline(cmdline, BOOT_COMMAND_LINE_SIZE); printf("\n\r"); /* Put the command line back into the devtree for the kernel */ @@ -174,7 +174,7 @@ void start(void) * built-in command line wasn't set by an external tool */ if ((loader_info.cmdline_len > 0) && (cmdline[0] == '\0')) memmove(cmdline, loader_info.cmdline, - min(loader_info.cmdline_len, COMMAND_LINE_SIZE-1)); + min(loader_info.cmdline_len, BOOT_COMMAND_LINE_SIZE-1)); if (console_ops.open && (console_ops.open() < 0)) exit(); diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h index b3218ce451bb..339e041e8dda 100644 --- a/arch/powerpc/boot/ops.h +++ b/arch/powerpc/boot/ops.h @@ -15,7 +15,7 @@ #include "types.h" #include "string.h" -#define COMMAND_LINE_SIZE 512 +#define BOOT_COMMAND_LINE_SIZE 512 #define MAX_PATH_LEN 256 #define MAX_PROP_LEN 256 /* What should this be? */ diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c index 9954d98871d0..4ec2d86d3c50 100644 --- a/arch/powerpc/boot/ps3.c +++ b/arch/powerpc/boot/ps3.c @@ -47,13 +47,13 @@ BSS_STACK(4096); * The buffer is put in it's own section so that tools may locate it easier. */ -static char cmdline[COMMAND_LINE_SIZE] +static char cmdline[BOOT_COMMAND_LINE_SIZE] __attribute__((__section__("__builtin_cmdline"))); static void prep_cmdline(void *chosen) { if (cmdline[0] == '\0') - getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1); + getprop(chosen, "bootargs", cmdline, BOOT_COMMAND_LINE_SIZE-1); else setprop_str(chosen, "bootargs", cmdline); From a5980d064fe292584da73ddd180f4f140f9ab97d Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 14 Apr 2014 21:54:52 +1000 Subject: [PATCH 452/623] powerpc: Bump COMMAND_LINE_SIZE to 2048 I've had a report that the current limit is too small for an automated network based installer. Bump it. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/uapi/asm/setup.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/uapi/asm/setup.h b/arch/powerpc/include/uapi/asm/setup.h index 552df83f1a49..ae3fb68cb28e 100644 --- a/arch/powerpc/include/uapi/asm/setup.h +++ b/arch/powerpc/include/uapi/asm/setup.h @@ -1 +1,6 @@ -#include +#ifndef _UAPI_ASM_POWERPC_SETUP_H +#define _UAPI_ASM_POWERPC_SETUP_H + +#define COMMAND_LINE_SIZE 2048 + +#endif /* _UAPI_ASM_POWERPC_SETUP_H */ From 579a53cafdd641f2d67ba4f4fbd9cc4180b8717d Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 14 Apr 2014 21:55:25 +1000 Subject: [PATCH 453/623] powerpc: Bump BOOT_COMMAND_LINE_SIZE to 2048 Bump the boot wrapper BOOT_COMMAND_LINE_SIZE to match the kernel. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/boot/ops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h index 339e041e8dda..8aad3c55aeda 100644 --- a/arch/powerpc/boot/ops.h +++ b/arch/powerpc/boot/ops.h @@ -15,7 +15,7 @@ #include "types.h" #include "string.h" -#define BOOT_COMMAND_LINE_SIZE 512 +#define BOOT_COMMAND_LINE_SIZE 2048 #define MAX_PATH_LEN 256 #define MAX_PROP_LEN 256 /* What should this be? */ From 0c930692107be4b91c3eeecfd9c9d600039f966f Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 14 Apr 2014 21:23:32 +1000 Subject: [PATCH 454/623] powerpc: Fix error return in rtas_flash module init module_init should return 0 or a negative errno. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/rtas_flash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c index 2f3cdb01506d..658e89d2025b 100644 --- a/arch/powerpc/kernel/rtas_flash.c +++ b/arch/powerpc/kernel/rtas_flash.c @@ -705,7 +705,7 @@ static int __init rtas_flash_init(void) if (rtas_token("ibm,update-flash-64-and-reboot") == RTAS_UNKNOWN_SERVICE) { pr_info("rtas_flash: no firmware flash support\n"); - return 1; + return -EINVAL; } rtas_validate_flash_data.buf = kzalloc(VALIDATE_BUF_SIZE, GFP_KERNEL); From 42dbfc8649737cb622b2a7e02045401c4c09561c Mon Sep 17 00:00:00 2001 From: Li Zhong Date: Thu, 10 Apr 2014 16:25:31 +0800 Subject: [PATCH 455/623] powerpc/pseries: Protect remove_memory() with device hotplug lock While testing memory hot-remove, I found following dead lock: Process #1141 is drmgr, trying to remove some memory, i.e. memory499. It holds the memory_hotplug_mutex, and blocks when trying to remove file "online" under dir memory499, in kernfs_drain(), at wait_event(root->deactivate_waitq, atomic_read(&kn->active) == KN_DEACTIVATED_BIAS); Process #1120 is trying to online memory499 by echo 1 > memory499/online In .kernfs_fop_write, it uses kernfs_get_active() to increase &kn->active, thus blocking process #1141. While itself is blocked later when trying to acquire memory_hotplug_mutex, which is held by process The backtrace of both processes are shown below: [] 0xc000000001b18600 [] .__switch_to+0x144/0x200 [] .online_pages+0x74/0x7b0 [] .memory_subsys_online+0x9c/0x150 [] .device_online+0xb8/0x120 [] .online_store+0xb4/0xc0 [] .dev_attr_store+0x64/0xa0 [] .sysfs_kf_write+0x7c/0xb0 [] .kernfs_fop_write+0x154/0x1e0 [] .vfs_write+0xe0/0x260 [] .SyS_write+0x64/0x110 [] syscall_exit+0x0/0x7c [] 0xc000000001b18600 [] .__switch_to+0x144/0x200 [] .__kernfs_remove+0x204/0x300 [] .kernfs_remove_by_name_ns+0x68/0xf0 [] .sysfs_remove_file_ns+0x38/0x60 [] .device_remove_attrs+0x54/0xc0 [] .device_del+0x158/0x250 [] .device_unregister+0x34/0xa0 [] .unregister_memory_section+0x164/0x170 [] .__remove_pages+0x108/0x4c0 [] .arch_remove_memory+0x60/0xc0 [] .remove_memory+0x8c/0xe0 [] .pseries_remove_memblock+0xd4/0x160 [] .pseries_memory_notifier+0x27c/0x290 [] .notifier_call_chain+0x8c/0x100 [] .__blocking_notifier_call_chain+0x6c/0xe0 [] .of_property_notify+0x7c/0xc0 [] .of_update_property+0x3c/0x1b0 [] .ofdt_write+0x3dc/0x740 [] .proc_reg_write+0xac/0x110 [] .vfs_write+0xe0/0x260 [] .SyS_write+0x64/0x110 [] syscall_exit+0x0/0x7c This patch uses lock_device_hotplug() to protect remove_memory() called in pseries_remove_memblock(), which is also stated before function remove_memory(): * NOTE: The caller must call lock_device_hotplug() to serialize hotplug * and online/offline operations before this call, as required by * try_offline_node(). */ void __ref remove_memory(int nid, u64 start, u64 size) With this lock held, the other process(#1120 above) trying to online the memory block will retry the system call when calling lock_device_hotplug_sysfs(), and finally find No such device error. Signed-off-by: Li Zhong Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/hotplug-memory.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c index 573b488fc48b..7f75c94af822 100644 --- a/arch/powerpc/platforms/pseries/hotplug-memory.c +++ b/arch/powerpc/platforms/pseries/hotplug-memory.c @@ -100,10 +100,10 @@ static int pseries_remove_memblock(unsigned long base, unsigned int memblock_siz start_pfn = base >> PAGE_SHIFT; - if (!pfn_valid(start_pfn)) { - memblock_remove(base, memblock_size); - return 0; - } + lock_device_hotplug(); + + if (!pfn_valid(start_pfn)) + goto out; block_sz = memory_block_size_bytes(); sections_per_block = block_sz / MIN_MEMORY_BLOCK_SIZE; @@ -114,8 +114,10 @@ static int pseries_remove_memblock(unsigned long base, unsigned int memblock_siz base += MIN_MEMORY_BLOCK_SIZE; } +out: /* Update memory regions for memory remove */ memblock_remove(base, memblock_size); + unlock_device_hotplug(); return 0; } From f203891117323dd31c11adcbba60452c933d604e Mon Sep 17 00:00:00 2001 From: Preeti U Murthy Date: Fri, 11 Apr 2014 16:01:48 +0530 Subject: [PATCH 456/623] ppc/powernv: Set the runlatch bits correctly for offline cpus Up until now we have been setting the runlatch bits for a busy CPU and clearing it when a CPU enters idle state. The runlatch bit has thus been consistent with the utilization of a CPU as long as the CPU is online. However when a CPU is hotplugged out the runlatch bit is not cleared. It needs to be cleared to indicate an unused CPU. Hence this patch has the runlatch bit cleared for an offline CPU just before entering an idle state and sets it immediately after it exits the idle state. Signed-off-by: Preeti U Murthy Acked-by: Paul Mackerras Reviewed-by: Srivatsa S. Bhat Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/smp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index 908672bdcea6..bf5fcd452168 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -30,6 +30,7 @@ #include #include #include +#include #include "powernv.h" @@ -156,7 +157,9 @@ static void pnv_smp_cpu_kill_self(void) */ mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~(u64)LPCR_PECE1); while (!generic_check_cpu_restart(cpu)) { + ppc64_runlatch_off(); power7_nap(); + ppc64_runlatch_on(); if (!generic_check_cpu_restart(cpu)) { DBG("CPU%d Unexpected exit while offline !\n", cpu); /* We may be getting an IPI, so we re-enable From fd17dc7b9a8d57150ee0121c4c83edbb7e26eece Mon Sep 17 00:00:00 2001 From: Preeti U Murthy Date: Fri, 11 Apr 2014 16:01:58 +0530 Subject: [PATCH 457/623] ppc/kvm: Set the runlatch bit of a CPU just before starting guest The secondary threads in the core are kept offline before launching guests in kvm on powerpc: "371fefd6f2dc4666:KVM: PPC: Allow book3s_hv guests to use SMT processor modes." Hence their runlatch bits are cleared. When the secondary threads are called in to start a guest, their runlatch bits need to be set to indicate that they are busy. The primary thread has its runlatch bit set though, but there is no harm in setting this bit once again. Hence set the runlatch bit for all threads before they start guest. Signed-off-by: Preeti U Murthy Acked-by: Paul Mackerras Reviewed-by: Srivatsa S. Bhat Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index ffbb871c2bd8..b25407533618 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -242,6 +242,12 @@ kvm_novcpu_exit: */ .globl kvm_start_guest kvm_start_guest: + + /* Set runlatch bit the minute you wake up from nap */ + mfspr r1, SPRN_CTRLF + ori r1, r1, 1 + mtspr SPRN_CTRLT, r1 + ld r2,PACATOC(r13) li r0,KVM_HWTHREAD_IN_KVM From 582b910edafd283dfab78f41f437a92a65ee5103 Mon Sep 17 00:00:00 2001 From: Preeti U Murthy Date: Fri, 11 Apr 2014 16:02:08 +0530 Subject: [PATCH 458/623] ppc/kvm: Clear the runlatch bit of a vcpu before napping When the guest cedes the vcpu or the vcpu has no guest to run it naps. Clear the runlatch bit of the vcpu before napping to indicate an idle cpu. Signed-off-by: Preeti U Murthy Acked-by: Paul Mackerras Reviewed-by: Srivatsa S. Bhat Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kvm/book3s_hv_rmhandlers.S | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index b25407533618..b031f932c0cc 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -315,6 +315,11 @@ kvm_no_guest: li r0, KVM_HWTHREAD_IN_NAP stb r0, HSTATE_HWTHREAD_STATE(r13) kvm_do_nap: + /* Clear the runlatch bit before napping */ + mfspr r2, SPRN_CTRLF + clrrdi r2, r2, 1 + mtspr SPRN_CTRLT, r2 + li r3, LPCR_PECE0 mfspr r4, SPRN_LPCR rlwimi r4, r3, 0, LPCR_PECE0 | LPCR_PECE1 @@ -2005,8 +2010,13 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_206) /* * Take a nap until a decrementer or external or doobell interrupt - * occurs, with PECE1, PECE0 and PECEDP set in LPCR + * occurs, with PECE1, PECE0 and PECEDP set in LPCR. Also clear the + * runlatch bit before napping. */ + mfspr r2, SPRN_CTRLF + clrrdi r2, r2, 1 + mtspr SPRN_CTRLT, r2 + li r0,1 stb r0,HSTATE_HWTHREAD_REQ(r13) mfspr r5,SPRN_LPCR From e4565362c7adc31201135c4b6d649fc1bdc3bf20 Mon Sep 17 00:00:00 2001 From: Alistair Popple Date: Tue, 8 Apr 2014 14:20:19 +1000 Subject: [PATCH 459/623] powerpc/4xx: Fix section mismatch in ppc4xx_pci.c This patch fixes this section mismatch: WARNING: vmlinux.o(.text+0x1efc4): Section mismatch in reference from the function apm821xx_pciex_init_port_hw() to the function .init.text:ppc4xx_pciex_wait_on_sdr.isra.9() The function apm821xx_pciex_init_port_hw() references the function __init ppc4xx_pciex_wait_on_sdr.isra.9(). This is often because apm821xx_pciex_init_port_hw lacks a __init annotation or the annotation of ppc4xx_pciex_wait_on_sdr.isra.9 is wrong. apm821xx_pciex_init_port_hw is only referenced by a struct in __initdata, so it should be safe to add __init to apm821xx_pciex_init_port_hw. Signed-off-by: Alistair Popple Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/sysdev/ppc4xx_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c index 64603a10b863..4914fd3f41ec 100644 --- a/arch/powerpc/sysdev/ppc4xx_pci.c +++ b/arch/powerpc/sysdev/ppc4xx_pci.c @@ -1058,7 +1058,7 @@ static int __init apm821xx_pciex_core_init(struct device_node *np) return 1; } -static int apm821xx_pciex_init_port_hw(struct ppc4xx_pciex_port *port) +static int __init apm821xx_pciex_init_port_hw(struct ppc4xx_pciex_port *port) { u32 val; From 39025ba38278f3003ee538409f7c98970620ef49 Mon Sep 17 00:00:00 2001 From: Oren Twaig Date: Mon, 28 Apr 2014 10:21:37 +0300 Subject: [PATCH 460/623] x86/vsmp: Fix irq routing Correct IRQ routing in case a vSMP box is detected but the Interrupt Routing Comply (IRC) value is set to "comply", which leads to incorrect IRQ routing. Before the patch: When a vSMP box was detected and IRC was set to "comply", users (and the kernel) couldn't effectively set the destination of the IRQs. This is because the hook inside vsmp_64.c always setup all CPUs as the IRQ destination using cpumask_setall() as the return value for IRQ allocation mask. Later, this "overrided" mask caused the kernel to set the IRQ destination to the lowest online CPU in the mask (CPU0 usually). After the patch: When the IRC is set to "comply", users (and the kernel) can control the destination of the IRQs as we will not be changing the default "apic->vector_allocation_domain". Signed-off-by: Oren Twaig Acked-by: Shai Fultheim Link: http://lkml.kernel.org/r/1398669697-2123-1-git-send-email-oren@scalemp.com [ Minor readability edits. ] Signed-off-by: Ingo Molnar --- arch/x86/kernel/vsmp_64.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index f6584a90aba3..5edc34b5b951 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -26,6 +26,9 @@ #define TOPOLOGY_REGISTER_OFFSET 0x10 +/* Flag below is initialized once during vSMP PCI initialization. */ +static int irq_routing_comply = 1; + #if defined CONFIG_PCI && defined CONFIG_PARAVIRT /* * Interrupt control on vSMPowered systems: @@ -101,6 +104,10 @@ static void __init set_vsmp_pv_ops(void) #ifdef CONFIG_SMP if (cap & ctl & BIT(8)) { ctl &= ~BIT(8); + + /* Interrupt routing set to ignore */ + irq_routing_comply = 0; + #ifdef CONFIG_PROC_FS /* Don't let users change irq affinity via procfs */ no_irq_affinity = 1; @@ -218,7 +225,9 @@ static void vsmp_apic_post_init(void) { /* need to update phys_pkg_id */ apic->phys_pkg_id = apicid_phys_pkg_id; - apic->vector_allocation_domain = fill_vector_allocation_domain; + + if (!irq_routing_comply) + apic->vector_allocation_domain = fill_vector_allocation_domain; } void __init vsmp_init(void) From e8e249d78e0600cb892c87992b6c8c9ea3b301ae Mon Sep 17 00:00:00 2001 From: Alexander Gordeev Date: Fri, 21 Feb 2014 18:05:05 +0100 Subject: [PATCH 461/623] kvm: Use pci_enable_msix_exact() instead of pci_enable_msix() As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. Signed-off-by: Alexander Gordeev Cc: Gleb Natapov Cc: Paolo Bonzini Cc: kvm@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Paolo Bonzini --- virt/kvm/assigned-dev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c index 8db43701016f..bf06577fea51 100644 --- a/virt/kvm/assigned-dev.c +++ b/virt/kvm/assigned-dev.c @@ -395,7 +395,8 @@ static int assigned_device_enable_host_msix(struct kvm *kvm, if (dev->entries_nr == 0) return r; - r = pci_enable_msix(dev->dev, dev->host_msix_entries, dev->entries_nr); + r = pci_enable_msix_exact(dev->dev, + dev->host_msix_entries, dev->entries_nr); if (r) return r; From fe2b201b3be91575857227da7ef21f661bc460b1 Mon Sep 17 00:00:00 2001 From: Bandan Das Date: Mon, 21 Apr 2014 15:20:14 -0400 Subject: [PATCH 462/623] KVM: x86: Check for host supported fields in shadow vmcs We track shadow vmcs fields through two static lists, one for read only and another for r/w fields. However, with addition of new vmcs fields, not all fields may be supported on all hosts. If so, copy_vmcs12_to_shadow() trying to vmwrite on unsupported hosts will result in a vmwrite error. For example, commit 36be0b9deb23161 introduced GUEST_BNDCFGS, which is not supported by all processors. Filter out host unsupported fields before letting guests use shadow vmcs Signed-off-by: Bandan Das Signed-off-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 53 +++++++++++++++++++++++++++++++++++----------- 1 file changed, 41 insertions(+), 12 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 1f68c5831924..33e8c028842f 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -503,7 +503,7 @@ static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu) [number##_HIGH] = VMCS12_OFFSET(name)+4 -static const unsigned long shadow_read_only_fields[] = { +static unsigned long shadow_read_only_fields[] = { /* * We do NOT shadow fields that are modified when L0 * traps and emulates any vmx instruction (e.g. VMPTRLD, @@ -526,10 +526,10 @@ static const unsigned long shadow_read_only_fields[] = { GUEST_LINEAR_ADDRESS, GUEST_PHYSICAL_ADDRESS }; -static const int max_shadow_read_only_fields = +static int max_shadow_read_only_fields = ARRAY_SIZE(shadow_read_only_fields); -static const unsigned long shadow_read_write_fields[] = { +static unsigned long shadow_read_write_fields[] = { GUEST_RIP, GUEST_RSP, GUEST_CR0, @@ -558,7 +558,7 @@ static const unsigned long shadow_read_write_fields[] = { HOST_FS_SELECTOR, HOST_GS_SELECTOR }; -static const int max_shadow_read_write_fields = +static int max_shadow_read_write_fields = ARRAY_SIZE(shadow_read_write_fields); static const unsigned short vmcs_field_to_offset_table[] = { @@ -3009,6 +3009,41 @@ static void free_kvm_area(void) } } +static void init_vmcs_shadow_fields(void) +{ + int i, j; + + /* No checks for read only fields yet */ + + for (i = j = 0; i < max_shadow_read_write_fields; i++) { + switch (shadow_read_write_fields[i]) { + case GUEST_BNDCFGS: + if (!vmx_mpx_supported()) + continue; + break; + default: + break; + } + + if (j < i) + shadow_read_write_fields[j] = + shadow_read_write_fields[i]; + j++; + } + max_shadow_read_write_fields = j; + + /* shadowed fields guest access without vmexit */ + for (i = 0; i < max_shadow_read_write_fields; i++) { + clear_bit(shadow_read_write_fields[i], + vmx_vmwrite_bitmap); + clear_bit(shadow_read_write_fields[i], + vmx_vmread_bitmap); + } + for (i = 0; i < max_shadow_read_only_fields; i++) + clear_bit(shadow_read_only_fields[i], + vmx_vmread_bitmap); +} + static __init int alloc_kvm_area(void) { int cpu; @@ -3039,6 +3074,8 @@ static __init int hardware_setup(void) enable_vpid = 0; if (!cpu_has_vmx_shadow_vmcs()) enable_shadow_vmcs = 0; + if (enable_shadow_vmcs) + init_vmcs_shadow_fields(); if (!cpu_has_vmx_ept() || !cpu_has_vmx_ept_4levels()) { @@ -8803,14 +8840,6 @@ static int __init vmx_init(void) memset(vmx_vmread_bitmap, 0xff, PAGE_SIZE); memset(vmx_vmwrite_bitmap, 0xff, PAGE_SIZE); - /* shadowed read/write fields */ - for (i = 0; i < max_shadow_read_write_fields; i++) { - clear_bit(shadow_read_write_fields[i], vmx_vmwrite_bitmap); - clear_bit(shadow_read_write_fields[i], vmx_vmread_bitmap); - } - /* shadowed read only fields */ - for (i = 0; i < max_shadow_read_only_fields; i++) - clear_bit(shadow_read_only_fields[i], vmx_vmread_bitmap); /* * Allow direct access to the PC debug port (it is often used for I/O From e32dfbed8cc06aac72528e2bb53067ce02262413 Mon Sep 17 00:00:00 2001 From: Hui Wang Date: Mon, 28 Apr 2014 14:45:00 +0800 Subject: [PATCH 463/623] ALSA: hda - add headset mic detect quirk for a Dell laptop When we plug a 3-ring headset on the Dell machine (VID: 0x10ec0255, SID: 0x10280674), the headset mic can't be detected, after apply this patch, the headset mic can work well. BugLink: https://bugs.launchpad.net/bugs/1297581 Cc: David Henningsson Cc: stable@vger.kernel.org Signed-off-by: Hui Wang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index c643dfc0a826..c1952c910339 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4621,6 +4621,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x1028, 0x0667, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x0668, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x0669, "Dell", ALC255_FIXUP_DELL2_MIC_NO_PRESENCE), + SND_PCI_QUIRK(0x1028, 0x0674, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x067f, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x15cc, "Dell X5 Precision", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x15cd, "Dell X5 Precision", ALC269_FIXUP_DELL2_MIC_NO_PRESENCE), From def5f1273c5f18abf8fcaee03a115d3e907ad407 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Sun, 27 Apr 2014 21:03:09 -0700 Subject: [PATCH 464/623] linux/interrupt.h: fix new kernel-doc warnings Fix new kernel-doc warnings in : Warning(include/linux/interrupt.h:219): No description found for parameter 'cpumask' Warning(include/linux/interrupt.h:219): Excess function parameter 'mask' description in 'irq_set_affinity' Warning(include/linux/interrupt.h:236): No description found for parameter 'cpumask' Warning(include/linux/interrupt.h:236): Excess function parameter 'mask' description in 'irq_force_affinity' Signed-off-by: Randy Dunlap Link: http://lkml.kernel.org/r/535DD2FD.7030804@infradead.org Signed-off-by: Thomas Gleixner --- include/linux/interrupt.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 8834a7e5b944..97ac926c78a7 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -210,7 +210,7 @@ extern int __irq_set_affinity(unsigned int irq, const struct cpumask *cpumask, /** * irq_set_affinity - Set the irq affinity of a given irq * @irq: Interrupt to set affinity - * @mask: cpumask + * @cpumask: cpumask * * Fails if cpumask does not contain an online CPU */ @@ -223,7 +223,7 @@ irq_set_affinity(unsigned int irq, const struct cpumask *cpumask) /** * irq_force_affinity - Force the irq affinity of a given irq * @irq: Interrupt to set affinity - * @mask: cpumask + * @cpumask: cpumask * * Same as irq_set_affinity, but without checking the mask against * online cpus. From 62a08ae2a5763aabeee98264605236b001503e0c Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 24 Apr 2014 09:50:53 +0200 Subject: [PATCH 465/623] genirq: x86: Ensure that dynamic irq allocation does not conflict On x86 the allocation of irq descriptors may allocate interrupts which are in the range of the GSI interrupts. That's wrong as those interrupts are hardwired and we don't have the irq domain translation like PPC. So one of these interrupts can be hooked up later to one of the devices which are hard wired to it and the io_apic init code for that particular interrupt line happily reuses that descriptor with a completely different configuration so hell breaks lose. Inside x86 we allocate dynamic interrupts from above nr_gsi_irqs, except for a few usage sites which have not yet blown up in our face for whatever reason. But for drivers which need an irq range, like the GPIO drivers, we have no limit in place and we don't want to expose such a detail to a driver. To cure this introduce a function which an architecture can implement to impose a lower bound on the dynamic interrupt allocations. Implement it for x86 and set the lower bound to nr_gsi_irqs, which is the end of the hardwired interrupt space, so all dynamic allocations happen above. That not only allows the GPIO driver to work sanely, it also protects the bogus callsites of create_irq_nr() in hpet, uv, irq_remapping and htirq code. They need to be cleaned up as well, but that's a separate issue. Reported-by: Jin Yao Signed-off-by: Thomas Gleixner Tested-by: Mika Westerberg Cc: Mathias Nyman Cc: Linus Torvalds Cc: Grant Likely Cc: H. Peter Anvin Cc: Rafael J. Wysocki Cc: Andy Shevchenko Cc: Krogerus Heikki Cc: Linus Walleij Link: http://lkml.kernel.org/r/alpine.DEB.2.02.1404241617360.28206@ionos.tec.linutronix.de Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/io_apic.c | 5 +++++ include/linux/irq.h | 2 ++ kernel/irq/irqdesc.c | 7 +++++++ kernel/softirq.c | 5 +++++ 4 files changed, 19 insertions(+) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 6ad4658de705..d23aa82e7a7b 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -3425,6 +3425,11 @@ int get_nr_irqs_gsi(void) return nr_irqs_gsi; } +unsigned int arch_dynirq_lower_bound(unsigned int from) +{ + return from < nr_irqs_gsi ? nr_irqs_gsi : from; +} + int __init arch_probe_nr_irqs(void) { int nr; diff --git a/include/linux/irq.h b/include/linux/irq.h index 10a0b1ac4ea0..5c57efb863d0 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -603,6 +603,8 @@ static inline u32 irq_get_trigger_type(unsigned int irq) return d ? irqd_get_trigger_type(d) : 0; } +unsigned int arch_dynirq_lower_bound(unsigned int from); + int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, struct module *owner); diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c index a7174617616b..bb07f2928f4b 100644 --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -363,6 +363,13 @@ __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node, if (from > irq) return -EINVAL; from = irq; + } else { + /* + * For interrupts which are freely allocated the + * architecture can force a lower bound to the @from + * argument. x86 uses this to exclude the GSI space. + */ + from = arch_dynirq_lower_bound(from); } mutex_lock(&sparse_irq_lock); diff --git a/kernel/softirq.c b/kernel/softirq.c index b50990a5bea0..33e4648ae0e7 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -779,3 +779,8 @@ int __init __weak arch_early_irq_init(void) { return 0; } + +unsigned int __weak arch_dynirq_lower_bound(unsigned int from) +{ + return from; +} From 5d4e08c45a6cf8f1ab3c7fa375007635ac569165 Mon Sep 17 00:00:00 2001 From: Mark Salter Date: Fri, 28 Mar 2014 14:25:19 +0000 Subject: [PATCH 466/623] arm: KVM: fix possible misalignment of PGDs and bounce page The kvm/mmu code shared by arm and arm64 uses kalloc() to allocate a bounce page (if hypervisor init code crosses page boundary) and hypervisor PGDs. The problem is that kalloc() does not guarantee the proper alignment. In the case of the bounce page, the page sized buffer allocated may also cross a page boundary negating the purpose and leading to a hang during kvm initialization. Likewise the PGDs allocated may not meet the minimum alignment requirements of the underlying MMU. This patch uses __get_free_page() to guarantee the worst case alignment needs of the bounce page and PGDs on both arm and arm64. Cc: # 3.10+ Signed-off-by: Mark Salter Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm/kvm/mmu.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 80bb1e6c2c29..16f804938b8f 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -42,6 +42,8 @@ static unsigned long hyp_idmap_start; static unsigned long hyp_idmap_end; static phys_addr_t hyp_idmap_vector; +#define pgd_order get_order(PTRS_PER_PGD * sizeof(pgd_t)) + #define kvm_pmd_huge(_x) (pmd_huge(_x) || pmd_trans_huge(_x)) static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa) @@ -293,14 +295,14 @@ void free_boot_hyp_pgd(void) if (boot_hyp_pgd) { unmap_range(NULL, boot_hyp_pgd, hyp_idmap_start, PAGE_SIZE); unmap_range(NULL, boot_hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); - kfree(boot_hyp_pgd); + free_pages((unsigned long)boot_hyp_pgd, pgd_order); boot_hyp_pgd = NULL; } if (hyp_pgd) unmap_range(NULL, hyp_pgd, TRAMPOLINE_VA, PAGE_SIZE); - kfree(init_bounce_page); + free_page((unsigned long)init_bounce_page); init_bounce_page = NULL; mutex_unlock(&kvm_hyp_pgd_mutex); @@ -330,7 +332,7 @@ void free_hyp_pgds(void) for (addr = VMALLOC_START; is_vmalloc_addr((void*)addr); addr += PGDIR_SIZE) unmap_range(NULL, hyp_pgd, KERN_TO_HYP(addr), PGDIR_SIZE); - kfree(hyp_pgd); + free_pages((unsigned long)hyp_pgd, pgd_order); hyp_pgd = NULL; } @@ -1024,7 +1026,7 @@ int kvm_mmu_init(void) size_t len = __hyp_idmap_text_end - __hyp_idmap_text_start; phys_addr_t phys_base; - init_bounce_page = kmalloc(PAGE_SIZE, GFP_KERNEL); + init_bounce_page = (void *)__get_free_page(GFP_KERNEL); if (!init_bounce_page) { kvm_err("Couldn't allocate HYP init bounce page\n"); err = -ENOMEM; @@ -1050,8 +1052,9 @@ int kvm_mmu_init(void) (unsigned long)phys_base); } - hyp_pgd = kzalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL); - boot_hyp_pgd = kzalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL); + hyp_pgd = (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, pgd_order); + boot_hyp_pgd = (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, pgd_order); + if (!hyp_pgd || !boot_hyp_pgd) { kvm_err("Hyp mode PGD not allocated\n"); err = -ENOMEM; From 5c8818b46e067120d33bbb2f610313240d76ba02 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Sat, 26 Apr 2014 03:43:01 -0700 Subject: [PATCH 467/623] MAINTAINERS: co-maintainance of KVM/{arm,arm64} The KVM/{arm,arm64} ports are sharing a lot of code, and are effectively co-maintained (and have been for quite a while). Make the situation official and list the two maintainers for both ports. Cc: Catalin Marinas Cc: Russell King Cc: Paolo Bonzini Cc: Gleb Natapov Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall Acked-by: Catalin Marinas Signed-off-by: Paolo Bonzini --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 6dc67b1fdb50..24815e784905 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5108,14 +5108,19 @@ F: drivers/s390/kvm/ KERNEL VIRTUAL MACHINE (KVM) FOR ARM M: Christoffer Dall +M: Marc Zyngier +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: kvmarm@lists.cs.columbia.edu W: http://systems.cs.columbia.edu/projects/kvm-arm S: Supported F: arch/arm/include/uapi/asm/kvm* F: arch/arm/include/asm/kvm* F: arch/arm/kvm/ +F: virt/kvm/arm/ +F: include/kvm/arm_* KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64) +M: Christoffer Dall M: Marc Zyngier L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: kvmarm@lists.cs.columbia.edu From 91021a6c8ffdc55804dab5acdfc7de4f278b9ac3 Mon Sep 17 00:00:00 2001 From: Haibin Wang Date: Thu, 10 Apr 2014 13:14:32 +0100 Subject: [PATCH 468/623] KVM: ARM: vgic: Fix sgi dispatch problem When dispatch SGI(mode == 0), that is the vcpu of VM should send sgi to the cpu which the target_cpus list. So, there must add the "break" to branch of case 0. Cc: # 3.10+ Signed-off-by: Haibin Wang Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 47b29834a6b6..7e8b44efb739 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -916,6 +916,7 @@ static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg) case 0: if (!target_cpus) return; + break; case 1: target_cpus = ((1 << nrcpus) - 1) & ~(1 << vcpu_id) & 0xff; From 41c22f626254b9dc0376928cae009e73d1b6a49a Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 21 Apr 2014 15:26:01 +0200 Subject: [PATCH 469/623] KVM: async_pf: mm->mm_users can not pin apf->mm get_user_pages(mm) is simply wrong if mm->mm_users == 0 and exit_mmap/etc was already called (or is in progress), mm->mm_count can only pin mm->pgd and mm_struct itself. Change kvm_setup_async_pf/async_pf_execute to inc/dec mm->mm_users. kvm_create_vm/kvm_destroy_vm play with ->mm_count too but this case looks fine at first glance, it seems that this ->mm is only used to verify that current->mm == kvm->mm. Signed-off-by: Oleg Nesterov Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini --- virt/kvm/async_pf.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c index 10df100c4514..06e6401d6ef4 100644 --- a/virt/kvm/async_pf.c +++ b/virt/kvm/async_pf.c @@ -101,7 +101,7 @@ static void async_pf_execute(struct work_struct *work) if (waitqueue_active(&vcpu->wq)) wake_up_interruptible(&vcpu->wq); - mmdrop(mm); + mmput(mm); kvm_put_kvm(vcpu->kvm); } @@ -118,7 +118,7 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu) flush_work(&work->work); #else if (cancel_work_sync(&work->work)) { - mmdrop(work->mm); + mmput(work->mm); kvm_put_kvm(vcpu->kvm); /* == work->vcpu->kvm */ kmem_cache_free(async_pf_cache, work); } @@ -183,7 +183,7 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, work->addr = hva; work->arch = *arch; work->mm = current->mm; - atomic_inc(&work->mm->mm_count); + atomic_inc(&work->mm->mm_users); kvm_get_kvm(work->vcpu->kvm); /* this can't really happen otherwise gfn_to_pfn_async @@ -201,7 +201,7 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva, return 1; retry_sync: kvm_put_kvm(work->vcpu->kvm); - mmdrop(work->mm); + mmput(work->mm); kmem_cache_free(async_pf_cache, work); return 0; } From f2ae85b2ab3776b9e4e42e5b6fa090f40d396794 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 11 Apr 2014 00:07:18 +0200 Subject: [PATCH 470/623] KVM: arm/arm64: vgic: fix GICD_ICFGR register accesses Since KVM internally represents the ICFGR registers by stuffing two of them into one word, the offset for accessing the internal representation and the one for the MMIO based access are different. So keep the original offset around, but adjust the internal array offset by one bit. Reported-by: Haibin Wang Signed-off-by: Andre Przywara Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index 7e8b44efb739..f9af48c9eb37 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -548,11 +548,10 @@ static bool handle_mmio_cfg_reg(struct kvm_vcpu *vcpu, u32 val; u32 *reg; - offset >>= 1; reg = vgic_bitmap_get_reg(&vcpu->kvm->arch.vgic.irq_cfg, - vcpu->vcpu_id, offset); + vcpu->vcpu_id, offset >> 1); - if (offset & 2) + if (offset & 4) val = *reg >> 16; else val = *reg & 0xffff; @@ -561,13 +560,13 @@ static bool handle_mmio_cfg_reg(struct kvm_vcpu *vcpu, vgic_reg_access(mmio, &val, offset, ACCESS_READ_VALUE | ACCESS_WRITE_VALUE); if (mmio->is_write) { - if (offset < 4) { + if (offset < 8) { *reg = ~0U; /* Force PPIs/SGIs to 1 */ return false; } val = vgic_cfg_compress(val); - if (offset & 2) { + if (offset & 4) { *reg &= 0xffff; *reg |= val << 16; } else { From a949ae560a511fe4e3adf48fa44fefded93e5c2b Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 24 Apr 2014 10:40:12 -0400 Subject: [PATCH 471/623] ftrace/module: Hardcode ftrace_module_init() call into load_module() A race exists between module loading and enabling of function tracer. CPU 1 CPU 2 ----- ----- load_module() module->state = MODULE_STATE_COMING register_ftrace_function() mutex_lock(&ftrace_lock); ftrace_startup() update_ftrace_function(); ftrace_arch_code_modify_prepare() set_all_module_text_rw(); ftrace_arch_code_modify_post_process() set_all_module_text_ro(); [ here all module text is set to RO, including the module that is loading!! ] blocking_notifier_call_chain(MODULE_STATE_COMING); ftrace_init_module() [ tries to modify code, but it's RO, and fails! ftrace_bug() is called] When this race happens, ftrace_bug() will produces a nasty warning and all of the function tracing features will be disabled until reboot. The simple solution is to treate module load the same way the core kernel is treated at boot. To hardcode the ftrace function modification of converting calls to mcount into nops. This is done in init/main.c there's no reason it could not be done in load_module(). This gives a better control of the changes and doesn't tie the state of the module to its notifiers as much. Ftrace is special, it needs to be treated as such. The reason this would work, is that the ftrace_module_init() would be called while the module is in MODULE_STATE_UNFORMED, which is ignored by the set_all_module_text_ro() call. Link: http://lkml.kernel.org/r/1395637826-3312-1-git-send-email-indou.takao@jp.fujitsu.com Reported-by: Takao Indoh Acked-by: Rusty Russell Cc: stable@vger.kernel.org # 2.6.38+ Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 2 ++ kernel/module.c | 3 +++ kernel/trace/ftrace.c | 27 ++++----------------------- 3 files changed, 9 insertions(+), 23 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 9212b017bc72..ae9504b4b67d 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -535,6 +535,7 @@ static inline int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_a extern int ftrace_arch_read_dyn_info(char *buf, int size); extern int skip_trace(unsigned long ip); +extern void ftrace_module_init(struct module *mod); extern void ftrace_disable_daemon(void); extern void ftrace_enable_daemon(void); @@ -544,6 +545,7 @@ static inline int ftrace_force_update(void) { return 0; } static inline void ftrace_disable_daemon(void) { } static inline void ftrace_enable_daemon(void) { } static inline void ftrace_release_mod(struct module *mod) {} +static inline void ftrace_module_init(struct module *mod) {} static inline __init int register_ftrace_command(struct ftrace_func_command *cmd) { return -EINVAL; diff --git a/kernel/module.c b/kernel/module.c index 11869408f79b..5f14fec9f825 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -3271,6 +3271,9 @@ static int load_module(struct load_info *info, const char __user *uargs, dynamic_debug_setup(info->debug, info->num_debug); + /* Ftrace init must be called in the MODULE_STATE_UNFORMED state */ + ftrace_module_init(mod); + /* Finally it's fully formed, ready to start executing. */ err = complete_formation(mod, info); if (err) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 1fd4b9479210..4a54a25afa2f 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -4330,16 +4330,11 @@ static void ftrace_init_module(struct module *mod, ftrace_process_locs(mod, start, end); } -static int ftrace_module_notify_enter(struct notifier_block *self, - unsigned long val, void *data) +void ftrace_module_init(struct module *mod) { - struct module *mod = data; - - if (val == MODULE_STATE_COMING) - ftrace_init_module(mod, mod->ftrace_callsites, - mod->ftrace_callsites + - mod->num_ftrace_callsites); - return 0; + ftrace_init_module(mod, mod->ftrace_callsites, + mod->ftrace_callsites + + mod->num_ftrace_callsites); } static int ftrace_module_notify_exit(struct notifier_block *self, @@ -4353,11 +4348,6 @@ static int ftrace_module_notify_exit(struct notifier_block *self, return 0; } #else -static int ftrace_module_notify_enter(struct notifier_block *self, - unsigned long val, void *data) -{ - return 0; -} static int ftrace_module_notify_exit(struct notifier_block *self, unsigned long val, void *data) { @@ -4365,11 +4355,6 @@ static int ftrace_module_notify_exit(struct notifier_block *self, } #endif /* CONFIG_MODULES */ -struct notifier_block ftrace_module_enter_nb = { - .notifier_call = ftrace_module_notify_enter, - .priority = INT_MAX, /* Run before anything that can use kprobes */ -}; - struct notifier_block ftrace_module_exit_nb = { .notifier_call = ftrace_module_notify_exit, .priority = INT_MIN, /* Run after anything that can remove kprobes */ @@ -4403,10 +4388,6 @@ void __init ftrace_init(void) __start_mcount_loc, __stop_mcount_loc); - ret = register_module_notifier(&ftrace_module_enter_nb); - if (ret) - pr_warning("Failed to register trace ftrace module enter notifier\n"); - ret = register_module_notifier(&ftrace_module_exit_nb); if (ret) pr_warning("Failed to register trace ftrace module exit notifier\n"); From af61e27c3f77c7623b5335590ae24b6a5c323e22 Mon Sep 17 00:00:00 2001 From: Tyler Stachecki Date: Fri, 25 Apr 2014 16:41:04 -0400 Subject: [PATCH 472/623] [SCSI] mpt2sas: Don't disable device twice at suspend. On suspend, _scsih_suspend calls mpt2sas_base_free_resources, which in turn calls pci_disable_device if the device is enabled prior to suspending. However, _scsih_suspend also calls pci_disable_device itself. Thus, in the event that the device is enabled prior to suspending, pci_disable_device will be called twice. This patch removes the duplicate call to pci_disable_device in _scsi_suspend as it is both unnecessary and results in a kernel oops. Signed-off-by: Tyler Stachecki Cc: stable@vger.kernel.org Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_scsih.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 7f0af4fcc001..6fd7d40b2c4d 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -8293,7 +8293,6 @@ _scsih_suspend(struct pci_dev *pdev, pm_message_t state) mpt2sas_base_free_resources(ioc); pci_save_state(pdev); - pci_disable_device(pdev); pci_set_power_state(pdev, device_state); return 0; } From e374c618b1465f0292047a9f4c244bd71ab5f1f0 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Mon, 28 Apr 2014 10:51:56 +0300 Subject: [PATCH 473/623] net: ipv6: more places need LOOPBACK_IFINDEX for flowi6_iif To properly match iif in ip rules we have to provide LOOPBACK_IFINDEX in flowi6_iif, not 0. Some ip6mr_fib_lookup and fib6_rule_lookup callers need such fix. Signed-off-by: Julian Anastasov Signed-off-by: David S. Miller --- net/ipv6/ip6mr.c | 2 +- net/ipv6/netfilter/ip6t_rpfilter.c | 1 + net/ipv6/route.c | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index 8659067da28e..8250474ab7dc 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -1633,7 +1633,7 @@ struct sock *mroute6_socket(struct net *net, struct sk_buff *skb) { struct mr6_table *mrt; struct flowi6 fl6 = { - .flowi6_iif = skb->skb_iif, + .flowi6_iif = skb->skb_iif ? : LOOPBACK_IFINDEX, .flowi6_oif = skb->dev->ifindex, .flowi6_mark = skb->mark, }; diff --git a/net/ipv6/netfilter/ip6t_rpfilter.c b/net/ipv6/netfilter/ip6t_rpfilter.c index e0983f3648a6..790e0c6b19e1 100644 --- a/net/ipv6/netfilter/ip6t_rpfilter.c +++ b/net/ipv6/netfilter/ip6t_rpfilter.c @@ -33,6 +33,7 @@ static bool rpfilter_lookup_reverse6(const struct sk_buff *skb, struct ipv6hdr *iph = ipv6_hdr(skb); bool ret = false; struct flowi6 fl6 = { + .flowi6_iif = LOOPBACK_IFINDEX, .flowlabel = (* (__be32 *) iph) & IPV6_FLOWINFO_MASK, .flowi6_proto = iph->nexthdr, .daddr = iph->saddr, diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 4011617cca68..004fffb6c221 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1273,6 +1273,7 @@ void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark) struct flowi6 fl6; memset(&fl6, 0, sizeof(fl6)); + fl6.flowi6_iif = LOOPBACK_IFINDEX; fl6.flowi6_oif = oif; fl6.flowi6_mark = mark; fl6.daddr = iph->daddr; @@ -1294,6 +1295,7 @@ void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif, struct flowi6 fl6; memset(&fl6, 0, sizeof(fl6)); + fl6.flowi6_iif = LOOPBACK_IFINDEX; fl6.flowi6_oif = oif; fl6.flowi6_mark = mark; fl6.daddr = msg->dest; From 014f1b20108dc2c0bb0777d8383654a089c790f8 Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Tue, 29 Apr 2014 00:41:21 +0900 Subject: [PATCH 474/623] net: bonding: Fix format string mismatch in bond_sysfs.c Fix format string mismatch in bonding_show_min_links(). Signed-off-by: Masanari Iida Signed-off-by: David S. Miller --- drivers/net/bonding/bond_sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 0e8b268da0a0..5f6babcfc26e 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -534,7 +534,7 @@ static ssize_t bonding_show_min_links(struct device *d, { struct bonding *bond = to_bond(d); - return sprintf(buf, "%d\n", bond->params.min_links); + return sprintf(buf, "%u\n", bond->params.min_links); } static ssize_t bonding_store_min_links(struct device *d, From 8cc3cfc5ccf1680b7c88f874912b6bec2797b76b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 4 Mar 2014 20:43:41 +0000 Subject: [PATCH 475/623] irqchip: armanda: Sanitize set_irq_affinity() The set_irq_affinity() function has two issues: 1) It has no protection against selecting an offline cpu from the given mask. 2) It pointlessly restricts the affinity masks to have a single cpu set. This collides with the irq migration code of arm. irq affinity is set to core 3 core 3 goes offline migration code sets mask to cpu_online_mask and calls the irq_set_affinity() callback of the irq_chip which fails due to bit 0,1,2 set. So instead of doing silly for_each_cpu() loops just pick any bit of the mask which intersects with the online mask. Get rid of fiddling with the default_irq_affinity as well. [ Gregory: Fixed the access to the routing register ] Signed-off-by: Thomas Gleixner Acked-by: Gregory CLEMENT Tested-by: Gregory CLEMENT Cc: Jason Cooper Cc: Peter Zijlstra Cc: Ingo Molnar Link: http://lkml.kernel.org/r/20140304203101.088889302@linutronix.de Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-armada-370-xp.c | 37 +++++------------------------ 1 file changed, 6 insertions(+), 31 deletions(-) diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index 41be897df8d5..304a20d0ad15 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -41,6 +41,7 @@ #define ARMADA_370_XP_INT_SET_ENABLE_OFFS (0x30) #define ARMADA_370_XP_INT_CLEAR_ENABLE_OFFS (0x34) #define ARMADA_370_XP_INT_SOURCE_CTL(irq) (0x100 + irq*4) +#define ARMADA_370_XP_INT_SOURCE_CPU_MASK 0xF #define ARMADA_370_XP_CPU_INTACK_OFFS (0x44) #define ARMADA_375_PPI_CAUSE (0x10) @@ -244,35 +245,18 @@ static DEFINE_RAW_SPINLOCK(irq_controller_lock); static int armada_xp_set_affinity(struct irq_data *d, const struct cpumask *mask_val, bool force) { - unsigned long reg; - unsigned long new_mask = 0; - unsigned long online_mask = 0; - unsigned long count = 0; irq_hw_number_t hwirq = irqd_to_hwirq(d); + unsigned long reg, mask; int cpu; - for_each_cpu(cpu, mask_val) { - new_mask |= 1 << cpu_logical_map(cpu); - count++; - } - - /* - * Forbid mutlicore interrupt affinity - * This is required since the MPIC HW doesn't limit - * several CPUs from acknowledging the same interrupt. - */ - if (count > 1) - return -EINVAL; - - for_each_cpu(cpu, cpu_online_mask) - online_mask |= 1 << cpu_logical_map(cpu); + /* Select a single core from the affinity mask which is online */ + cpu = cpumask_any_and(mask_val, cpu_online_mask); + mask = 1UL << cpu_logical_map(cpu); raw_spin_lock(&irq_controller_lock); - reg = readl(main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq)); - reg = (reg & (~online_mask)) | new_mask; + reg = (reg & (~ARMADA_370_XP_INT_SOURCE_CPU_MASK)) | mask; writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq)); - raw_spin_unlock(&irq_controller_lock); return 0; @@ -494,15 +478,6 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node, #ifdef CONFIG_SMP armada_xp_mpic_smp_cpu_init(); - - /* - * Set the default affinity from all CPUs to the boot cpu. - * This is required since the MPIC doesn't limit several CPUs - * from acknowledging the same interrupt. - */ - cpumask_clear(irq_default_affinity); - cpumask_set_cpu(smp_processor_id(), irq_default_affinity); - #endif armada_370_xp_msi_init(node, main_int_res.start); From 3894e9e82dfdc87fa35dc7976e0472d220228826 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 3 Apr 2014 10:21:34 +0300 Subject: [PATCH 476/623] irqchip: irq-crossbar: Not allocating enough memory We are allocating the size of a pointer and not the size of the data. This will lead to memory corruption. There isn't actually a "cb_device" struct, btw. The code is only able to compile because GCC knows that all pointers are the same size. Fixes: 96ca848ef7ea ('DRIVERS: IRQCHIP: CROSSBAR: Add support for Crossbar IP') Signed-off-by: Dan Carpenter Acked-by: Sricharan R Cc: Grant Likely Cc: Rob Herring Link: http://lkml.kernel.org/r/20140403072134.GA14286@mwanda Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-crossbar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c index fc817d28d1fe..3d15d16a7088 100644 --- a/drivers/irqchip/irq-crossbar.c +++ b/drivers/irqchip/irq-crossbar.c @@ -107,7 +107,7 @@ static int __init crossbar_of_init(struct device_node *node) int i, size, max, reserved = 0, entry; const __be32 *irqsr; - cb = kzalloc(sizeof(struct cb_device *), GFP_KERNEL); + cb = kzalloc(sizeof(*cb), GFP_KERNEL); if (!cb) return -ENOMEM; From 0081bd83c089ef3d0c9a4e4e869e2ab75f2cb379 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Tue, 8 Apr 2014 21:42:59 +0800 Subject: [PATCH 477/623] ceph: check directory's completeness before emitting directory entry Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/dir.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 766410a12c2c..8c7f90b96913 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -182,9 +182,16 @@ more: spin_unlock(&dentry->d_lock); spin_unlock(&parent->d_lock); + /* make sure a dentry wasn't dropped while we didn't have parent lock */ + if (!ceph_dir_is_complete(dir)) { + dout(" lost dir complete on %p; falling back to mds\n", dir); + dput(dentry); + err = -EAGAIN; + goto out; + } + dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, ctx->pos, dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode); - ctx->pos = di->offset; if (!dir_emit(ctx, dentry->d_name.name, dentry->d_name.len, ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino), @@ -198,19 +205,12 @@ more: return 0; } + ctx->pos = di->offset + 1; + if (last) dput(last); last = dentry; - ctx->pos++; - - /* make sure a dentry wasn't dropped while we didn't have parent lock */ - if (!ceph_dir_is_complete(dir)) { - dout(" lost dir complete on %p; falling back to mds\n", dir); - err = -EAGAIN; - goto out; - } - spin_lock(&parent->d_lock); p = p->prev; /* advance to next dentry */ goto more; @@ -296,6 +296,8 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx) err = __dcache_readdir(file, ctx, shared_gen); if (err != -EAGAIN) return err; + frag = fpos_frag(ctx->pos); + off = fpos_off(ctx->pos); } else { spin_unlock(&ci->i_ceph_lock); } From 6da5246dd4b077ab229481ca342802f7fdcdab59 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Wed, 9 Apr 2014 09:35:19 +0800 Subject: [PATCH 478/623] ceph: use fpos_cmp() to compare dentry positions Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 8c7f90b96913..fb4f7a203eda 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -141,7 +141,7 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx, /* start at beginning? */ if (ctx->pos == 2 || last == NULL || - ctx->pos < ceph_dentry(last)->offset) { + fpos_cmp(ctx->pos, ceph_dentry(last)->offset) < 0) { if (list_empty(&parent->d_subdirs)) goto out_unlock; p = parent->d_subdirs.prev; From 92b2e75158f6b8316b5a567c73dcf5b3d8f6bbce Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Thu, 10 Apr 2014 18:09:41 +0400 Subject: [PATCH 479/623] libceph: fix non-default values check in apply_primary_affinity() osd_primary_affinity array is indexed into incorrectly when checking for non-default primary-affinity values. This nullifies the impact of the rest of the apply_primary_affinity() and results in misdirected requests. if (osds[i] != CRUSH_ITEM_NONE && osdmap->osd_primary_affinity[i] != ^^^ CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { For a pool with size 2, this always ends up checking osd0 and osd1 primary_affinity values, instead of the values that correspond to the osds in question. E.g., given a [2,3] up set and a [max,max,0,max] primary affinity vector, requests are still sent to osd2, because both osd0 and osd1 happen to have max primary_affinity values and therefore we return from apply_primary_affinity() early on the premise that all osds in the given set have max (default) values. Fix it. Fixes: http://tracker.ceph.com/issues/7954 Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil --- net/ceph/osdmap.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index e632b5a52f5b..8b8a5a24b223 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1548,8 +1548,10 @@ static void apply_primary_affinity(struct ceph_osdmap *osdmap, u32 pps, return; for (i = 0; i < len; i++) { - if (osds[i] != CRUSH_ITEM_NONE && - osdmap->osd_primary_affinity[i] != + int osd = osds[i]; + + if (osd != CRUSH_ITEM_NONE && + osdmap->osd_primary_affinity[osd] != CEPH_OSD_DEFAULT_PRIMARY_AFFINITY) { break; } @@ -1563,10 +1565,9 @@ static void apply_primary_affinity(struct ceph_osdmap *osdmap, u32 pps, * osd's pgs get rejected as primary. */ for (i = 0; i < len; i++) { - int osd; + int osd = osds[i]; u32 aff; - osd = osds[i]; if (osd == CRUSH_ITEM_NONE) continue; From 0a8a70f96fe1bd3e07c15bb86fd247e76102398a Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Mon, 14 Apr 2014 13:13:02 +0800 Subject: [PATCH 480/623] ceph: clear directory's completeness when creating file When creating a file, ceph_set_dentry_offset() puts the new dentry at the end of directory's d_subdirs, then set the dentry's offset based on directory's max offset. The offset does not reflect the real postion of the dentry in directory. Later readdir reply from MDS may change the dentry's position/offset. This inconsistency can cause missing/duplicate entries in readdir result if readdir is partly satisfied by dcache_readdir(). The fix is clear directory's completeness after creating/renaming file. It prevents later readdir from using dcache_readdir(). Fixes: http://tracker.ceph.com/issues/8025 Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/dir.c | 9 ++++--- fs/ceph/inode.c | 71 +++++++++++-------------------------------------- fs/ceph/super.h | 1 - 3 files changed, 21 insertions(+), 60 deletions(-) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index fb4f7a203eda..c29d6ae68874 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -448,7 +448,6 @@ more: if (atomic_read(&ci->i_release_count) == fi->dir_release_count) { dout(" marking %p complete\n", inode); __ceph_dir_set_complete(ci, fi->dir_release_count); - ci->i_max_offset = ctx->pos; } spin_unlock(&ci->i_ceph_lock); @@ -937,14 +936,16 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, * to do it here. */ - /* d_move screws up d_subdirs order */ - ceph_dir_clear_complete(new_dir); - d_move(old_dentry, new_dentry); /* ensure target dentry is invalidated, despite rehashing bug in vfs_rename_dir */ ceph_invalidate_dentry_lease(new_dentry); + + /* d_move screws up sibling dentries' offsets */ + ceph_dir_clear_complete(old_dir); + ceph_dir_clear_complete(new_dir); + } ceph_mdsc_put_request(req); return err; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 0b0728e5be2d..233c6f96910a 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -744,7 +744,6 @@ static int fill_inode(struct inode *inode, !__ceph_dir_is_complete(ci)) { dout(" marking %p complete (empty)\n", inode); __ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count)); - ci->i_max_offset = 2; } no_change: /* only update max_size on auth cap */ @@ -889,41 +888,6 @@ out_unlock: return; } -/* - * Set dentry's directory position based on the current dir's max, and - * order it in d_subdirs, so that dcache_readdir behaves. - * - * Always called under directory's i_mutex. - */ -static void ceph_set_dentry_offset(struct dentry *dn) -{ - struct dentry *dir = dn->d_parent; - struct inode *inode = dir->d_inode; - struct ceph_inode_info *ci; - struct ceph_dentry_info *di; - - BUG_ON(!inode); - - ci = ceph_inode(inode); - di = ceph_dentry(dn); - - spin_lock(&ci->i_ceph_lock); - if (!__ceph_dir_is_complete(ci)) { - spin_unlock(&ci->i_ceph_lock); - return; - } - di->offset = ceph_inode(inode)->i_max_offset++; - spin_unlock(&ci->i_ceph_lock); - - spin_lock(&dir->d_lock); - spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED); - list_move(&dn->d_u.d_child, &dir->d_subdirs); - dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset, - dn->d_u.d_child.prev, dn->d_u.d_child.next); - spin_unlock(&dn->d_lock); - spin_unlock(&dir->d_lock); -} - /* * splice a dentry to an inode. * caller must hold directory i_mutex for this to be safe. @@ -933,7 +897,7 @@ static void ceph_set_dentry_offset(struct dentry *dn) * the caller) if we fail. */ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, - bool *prehash, bool set_offset) + bool *prehash) { struct dentry *realdn; @@ -965,8 +929,6 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, } if ((!prehash || *prehash) && d_unhashed(dn)) d_rehash(dn); - if (set_offset) - ceph_set_dentry_offset(dn); out: return dn; } @@ -987,7 +949,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, { struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; struct inode *in = NULL; - struct ceph_mds_reply_inode *ininfo; struct ceph_vino vino; struct ceph_fs_client *fsc = ceph_sb_to_client(sb); int err = 0; @@ -1161,6 +1122,9 @@ retry_lookup: /* rename? */ if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { + struct inode *olddir = req->r_old_dentry_dir; + BUG_ON(!olddir); + dout(" src %p '%.*s' dst %p '%.*s'\n", req->r_old_dentry, req->r_old_dentry->d_name.len, @@ -1180,13 +1144,10 @@ retry_lookup: rehashing bug in vfs_rename_dir */ ceph_invalidate_dentry_lease(dn); - /* - * d_move() puts the renamed dentry at the end of - * d_subdirs. We need to assign it an appropriate - * directory offset so we can behave when dir is - * complete. - */ - ceph_set_dentry_offset(req->r_old_dentry); + /* d_move screws up sibling dentries' offsets */ + ceph_dir_clear_complete(dir); + ceph_dir_clear_complete(olddir); + dout("dn %p gets new offset %lld\n", req->r_old_dentry, ceph_dentry(req->r_old_dentry)->offset); @@ -1213,8 +1174,9 @@ retry_lookup: /* attach proper inode */ if (!dn->d_inode) { + ceph_dir_clear_complete(dir); ihold(in); - dn = splice_dentry(dn, in, &have_lease, true); + dn = splice_dentry(dn, in, &have_lease); if (IS_ERR(dn)) { err = PTR_ERR(dn); goto done; @@ -1235,17 +1197,16 @@ retry_lookup: (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || req->r_op == CEPH_MDS_OP_MKSNAP)) { struct dentry *dn = req->r_dentry; + struct inode *dir = req->r_locked_dir; /* fill out a snapdir LOOKUPSNAP dentry */ BUG_ON(!dn); - BUG_ON(!req->r_locked_dir); - BUG_ON(ceph_snap(req->r_locked_dir) != CEPH_SNAPDIR); - ininfo = rinfo->targeti.in; - vino.ino = le64_to_cpu(ininfo->ino); - vino.snap = le64_to_cpu(ininfo->snapid); + BUG_ON(!dir); + BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); dout(" linking snapped dir %p to dn %p\n", in, dn); + ceph_dir_clear_complete(dir); ihold(in); - dn = splice_dentry(dn, in, NULL, true); + dn = splice_dentry(dn, in, NULL); if (IS_ERR(dn)) { err = PTR_ERR(dn); goto done; @@ -1407,7 +1368,7 @@ retry_lookup: } if (!dn->d_inode) { - dn = splice_dentry(dn, in, NULL, false); + dn = splice_dentry(dn, in, NULL); if (IS_ERR(dn)) { err = PTR_ERR(dn); dn = NULL; diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 7866cd05a6bb..ead05cc1f447 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -266,7 +266,6 @@ struct ceph_inode_info { struct timespec i_rctime; u64 i_rbytes, i_rfiles, i_rsubdirs; u64 i_files, i_subdirs; - u64 i_max_offset; /* largest readdir offset, set with complete dir */ struct rb_root i_fragtree; struct mutex i_fragtree_mutex; From fd7b95cd1b58171a0b931b2063729a032bec4ac2 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Thu, 17 Apr 2014 08:02:02 +0800 Subject: [PATCH 481/623] ceph: avoid releasing caps that are being used To avoid releasing caps that are being used, encode_inode_release() should send implemented caps to MDS. Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/caps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 2e5e648eb5c3..c561b628ebce 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -3261,7 +3261,7 @@ int ceph_encode_inode_release(void **p, struct inode *inode, rel->seq = cpu_to_le32(cap->seq); rel->issue_seq = cpu_to_le32(cap->issue_seq), rel->mseq = cpu_to_le32(cap->mseq); - rel->caps = cpu_to_le32(cap->issued); + rel->caps = cpu_to_le32(cap->implemented); rel->wanted = cpu_to_le32(cap->mds_wanted); rel->dname_len = 0; rel->dname_seq = 0; From 3bd58143bafc56dbc07f4f085e4d7e018d332674 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Sun, 27 Apr 2014 09:17:45 +0800 Subject: [PATCH 482/623] ceph: reserve caps for file layout/lock MDS requests Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/ioctl.c | 3 +++ fs/ceph/locks.c | 1 + 2 files changed, 4 insertions(+) diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index efbe08289292..2042fd16d1a8 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -110,6 +110,8 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) return PTR_ERR(req); req->r_inode = inode; ihold(inode); + req->r_num_caps = 1; + req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL; req->r_args.setlayout.layout.fl_stripe_unit = @@ -154,6 +156,7 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) return PTR_ERR(req); req->r_inode = inode; ihold(inode); + req->r_num_caps = 1; req->r_args.setlayout.layout.fl_stripe_unit = cpu_to_le32(l.stripe_unit); diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index d94ba0df9f4d..191398852a2e 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -45,6 +45,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, return PTR_ERR(req); req->r_inode = inode; ihold(inode); + req->r_num_caps = 1; /* mds requires start and length rather than start and end */ if (LLONG_MAX == fl->fl_end) From 50f5aa8a9b248fa4262cf379863ec9a531b49737 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 28 Apr 2014 14:24:09 -0700 Subject: [PATCH 483/623] mm: don't pointlessly use BUG_ON() for sanity check BUG_ON() is a big hammer, and should be used _only_ if there is some major corruption that you cannot possibly recover from, making it imperative that the current process (and possibly the whole machine) be terminated with extreme prejudice. The trivial sanity check in the vmacache code is *not* such a fatal error. Recovering from it is absolutely trivial, and using BUG_ON() just makes it harder to debug for no actual advantage. To make matters worse, the placement of the BUG_ON() (only if the range check matched) actually makes it harder to hit the sanity check to begin with, so _if_ there is a bug (and we just got a report from Srivatsa Bhat that this can indeed trigger), it is harder to debug not just because the machine is possibly dead, but because we don't have better coverage. BUG_ON() must *die*. Maybe we should add a checkpatch warning for it, because it is simply just about the worst thing you can ever do if you hit some "this cannot happen" situation. Reported-by: Srivatsa S. Bhat Cc: Davidlohr Bueso Cc: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmacache.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/mm/vmacache.c b/mm/vmacache.c index d4224b397c0e..1037a3bab505 100644 --- a/mm/vmacache.c +++ b/mm/vmacache.c @@ -81,10 +81,12 @@ struct vm_area_struct *vmacache_find(struct mm_struct *mm, unsigned long addr) for (i = 0; i < VMACACHE_SIZE; i++) { struct vm_area_struct *vma = current->vmacache[i]; - if (vma && vma->vm_start <= addr && vma->vm_end > addr) { - BUG_ON(vma->vm_mm != mm); + if (!vma) + continue; + if (WARN_ON_ONCE(vma->vm_mm != mm)) + break; + if (vma->vm_start <= addr && vma->vm_end > addr) return vma; - } } return NULL; From 0c8482ac92db5ac15792caf23b7f7df9e4f48ae1 Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Mon, 14 Apr 2014 10:16:09 +0800 Subject: [PATCH 484/623] [SCSI] virtio-scsi: Skip setting affinity on uninitialized vq virtscsi_init calls virtscsi_remove_vqs on err, even before initializing the vqs. The latter calls virtscsi_set_affinity, so let's check the pointer there before setting affinity on it. This fixes a panic when setting device's num_queues=2 on RHEL 6.5: qemu-system-x86_64 ... \ -device virtio-scsi-pci,id=scsi0,addr=0x13,...,num_queues=2 \ -drive file=/stor/vm/dummy.raw,id=drive-scsi-disk,... \ -device scsi-hd,drive=drive-scsi-disk,... [ 0.354734] scsi0 : Virtio SCSI HBA [ 0.379504] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [ 0.380141] IP: [] __virtscsi_set_affinity+0x4f/0x120 [ 0.380141] PGD 0 [ 0.380141] Oops: 0000 [#1] SMP [ 0.380141] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0+ #5 [ 0.380141] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007 [ 0.380141] task: ffff88003c9f0000 ti: ffff88003c9f8000 task.ti: ffff88003c9f8000 [ 0.380141] RIP: 0010:[] [] __virtscsi_set_affinity+0x4f/0x120 [ 0.380141] RSP: 0000:ffff88003c9f9c08 EFLAGS: 00010256 [ 0.380141] RAX: 0000000000000000 RBX: ffff88003c3a9d40 RCX: 0000000000001070 [ 0.380141] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 [ 0.380141] RBP: ffff88003c9f9c28 R08: 00000000000136c0 R09: ffff88003c801c00 [ 0.380141] R10: ffffffff81475229 R11: 0000000000000008 R12: 0000000000000000 [ 0.380141] R13: ffffffff81cc7ca8 R14: ffff88003cac3d40 R15: ffff88003cac37a0 [ 0.380141] FS: 0000000000000000(0000) GS:ffff88003e400000(0000) knlGS:0000000000000000 [ 0.380141] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 0.380141] CR2: 0000000000000020 CR3: 0000000001c0e000 CR4: 00000000000006f0 [ 0.380141] Stack: [ 0.380141] ffff88003c3a9d40 0000000000000000 ffff88003cac3d80 ffff88003cac3d40 [ 0.380141] ffff88003c9f9c48 ffffffff814742e8 ffff88003c26d000 ffff88003c26d000 [ 0.380141] ffff88003c9f9c68 ffffffff81474321 ffff88003c26d000 ffff88003c3a9d40 [ 0.380141] Call Trace: [ 0.380141] [] virtscsi_set_affinity+0x28/0x40 [ 0.380141] [] virtscsi_remove_vqs+0x21/0x50 [ 0.380141] [] virtscsi_init+0x91/0x240 [ 0.380141] [] ? vp_get+0x50/0x70 [ 0.380141] [] virtscsi_probe+0xf4/0x280 [ 0.380141] [] virtio_dev_probe+0xe5/0x140 [ 0.380141] [] driver_probe_device+0x89/0x230 [ 0.380141] [] __driver_attach+0x9b/0xa0 [ 0.380141] [] ? driver_probe_device+0x230/0x230 [ 0.380141] [] ? driver_probe_device+0x230/0x230 [ 0.380141] [] bus_for_each_dev+0x8c/0xb0 [ 0.380141] [] driver_attach+0x19/0x20 [ 0.380141] [] bus_add_driver+0x198/0x220 [ 0.380141] [] driver_register+0x5f/0xf0 [ 0.380141] [] ? spi_transport_init+0x79/0x79 [ 0.380141] [] register_virtio_driver+0x1b/0x30 [ 0.380141] [] init+0x88/0xd6 [ 0.380141] [] ? scsi_init_procfs+0x5b/0x5b [ 0.380141] [] do_one_initcall+0x7f/0x10a [ 0.380141] [] kernel_init_freeable+0x14a/0x1de [ 0.380141] [] ? kernel_init_freeable+0x1de/0x1de [ 0.380141] [] ? rest_init+0x80/0x80 [ 0.380141] [] kernel_init+0x9/0xf0 [ 0.380141] [] ret_from_fork+0x7c/0xb0 [ 0.380141] [] ? rest_init+0x80/0x80 [ 0.380141] RIP [] __virtscsi_set_affinity+0x4f/0x120 [ 0.380141] RSP [ 0.380141] CR2: 0000000000000020 [ 0.380141] ---[ end trace 8074b70c3d5e1d73 ]--- [ 0.475018] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 0.475018] [ 0.475068] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff) [ 0.475068] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [jejb: checkpatch fixes] Signed-off-by: Fam Zheng Acked-by: Paolo Bonzini Cc: stable@vger.kernel.org Signed-off-by: James Bottomley --- drivers/scsi/virtio_scsi.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 16bfd50cd3fe..db3b494e5926 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -750,8 +750,12 @@ static void __virtscsi_set_affinity(struct virtio_scsi *vscsi, bool affinity) vscsi->affinity_hint_set = true; } else { - for (i = 0; i < vscsi->num_queues; i++) + for (i = 0; i < vscsi->num_queues; i++) { + if (!vscsi->req_vqs[i].vq) + continue; + virtqueue_set_affinity(vscsi->req_vqs[i].vq, -1); + } vscsi->affinity_hint_set = false; } From 7aa0557fae5ce26dddc877869c7ad934e71f30db Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Tue, 29 Apr 2014 00:24:09 +0530 Subject: [PATCH 485/623] cpufreq: longhaul: Fix double invocation of cpufreq_freq_transition_begin/end During frequency transitions, the cpufreq core takes the responsibility of invoking cpufreq_freq_transition_begin() and cpufreq_freq_transition_end() for those cpufreq drivers that define the ->target_index callback but don't set the ASYNC_NOTIFICATION flag. The longhaul cpufreq driver falls under this category, but this driver was invoking the _begin() and _end() APIs itself around frequency transitions, which led to double invocation of the _begin() API. The _begin API makes contending callers wait until the previous invocation is complete. Hence, the longhaul driver ended up waiting on itself, leading to system hangs during boot. Fix this by removing the calls to the _begin() and _end() APIs from the longhaul driver, since they rightly belong to the cpufreq core. (Note that during module_exit(), the longhaul driver sets the frequency without any help from the cpufreq core. So add explicit calls to the _begin() and _end() APIs around that frequency transition alone, to take care of that special case.) Fixes: 12478cf0c55e (cpufreq: Make sure frequency transitions are serialized) Reported-and-tested-by: Meelis Roos Signed-off-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/longhaul.c | 36 ++++++++++++++++++++++++------------ 1 file changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index d00e5d1abd25..5c4369b5d834 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -242,7 +242,7 @@ static void do_powersaver(int cx_address, unsigned int mults_index, * Sets a new clock ratio. */ -static void longhaul_setstate(struct cpufreq_policy *policy, +static int longhaul_setstate(struct cpufreq_policy *policy, unsigned int table_index) { unsigned int mults_index; @@ -258,10 +258,12 @@ static void longhaul_setstate(struct cpufreq_policy *policy, /* Safety precautions */ mult = mults[mults_index & 0x1f]; if (mult == -1) - return; + return -EINVAL; + speed = calc_speed(mult); if ((speed > highest_speed) || (speed < lowest_speed)) - return; + return -EINVAL; + /* Voltage transition before frequency transition? */ if (can_scale_voltage && longhaul_index < table_index) dir = 1; @@ -269,8 +271,6 @@ static void longhaul_setstate(struct cpufreq_policy *policy, freqs.old = calc_speed(longhaul_get_cpu_mult()); freqs.new = speed; - cpufreq_freq_transition_begin(policy, &freqs); - pr_debug("Setting to FSB:%dMHz Mult:%d.%dx (%s)\n", fsb, mult/10, mult%10, print_speed(speed/1000)); retry_loop: @@ -385,12 +385,14 @@ retry_loop: goto retry_loop; } } - /* Report true CPU frequency */ - cpufreq_freq_transition_end(policy, &freqs, 0); - if (!bm_timeout) + if (!bm_timeout) { printk(KERN_INFO PFX "Warning: Timeout while waiting for " "idle PCI bus.\n"); + return -EBUSY; + } + + return 0; } /* @@ -631,9 +633,10 @@ static int longhaul_target(struct cpufreq_policy *policy, unsigned int i; unsigned int dir = 0; u8 vid, current_vid; + int retval = 0; if (!can_scale_voltage) - longhaul_setstate(policy, table_index); + retval = longhaul_setstate(policy, table_index); else { /* On test system voltage transitions exceeding single * step up or down were turning motherboard off. Both @@ -648,7 +651,7 @@ static int longhaul_target(struct cpufreq_policy *policy, while (i != table_index) { vid = (longhaul_table[i].driver_data >> 8) & 0x1f; if (vid != current_vid) { - longhaul_setstate(policy, i); + retval = longhaul_setstate(policy, i); current_vid = vid; msleep(200); } @@ -657,10 +660,11 @@ static int longhaul_target(struct cpufreq_policy *policy, else i--; } - longhaul_setstate(policy, table_index); + retval = longhaul_setstate(policy, table_index); } + longhaul_index = table_index; - return 0; + return retval; } @@ -968,7 +972,15 @@ static void __exit longhaul_exit(void) for (i = 0; i < numscales; i++) { if (mults[i] == maxmult) { + struct cpufreq_freqs freqs; + + freqs.old = policy->cur; + freqs.new = longhaul_table[i].frequency; + freqs.flags = 0; + + cpufreq_freq_transition_begin(policy, &freqs); longhaul_setstate(policy, i); + cpufreq_freq_transition_end(policy, &freqs, 0); break; } } From 237ede16ba5bcd4d6c612ea280518c48ca31986c Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Tue, 29 Apr 2014 00:24:27 +0530 Subject: [PATCH 486/623] cpufreq: powernow-k6: Fix incorrect comparison with max_multipler The value of 'max_multiplier' is meant to be used for comparison with clock_ratio[index].driver_data, not the index itself! Fix the code in powernow_k6_cpu_exit() that has this bug. Also, while at it, make the for-loop condition look for CPUFREQ_TABLE_END, instead of hard-coding the loop count to 8. Reported-by: Viresh Kumar Signed-off-by: Srivatsa S. Bhat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/powernow-k6.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index 49f120e1bc7b..695a68cfdcd4 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -227,8 +227,9 @@ have_busfreq: static int powernow_k6_cpu_exit(struct cpufreq_policy *policy) { unsigned int i; - for (i = 0; i < 8; i++) { - if (i == max_multiplier) + + for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) { + if (clock_ratio[i].driver_data == max_multiplier) powernow_k6_target(policy, i); } return 0; From 3221e55b72359c44ed75afbcf707710af5bc2d59 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Tue, 29 Apr 2014 00:24:42 +0530 Subject: [PATCH 487/623] cpufreq: powernow-k6: Fix double invocation of cpufreq_freq_transition_begin/end During frequency transitions, the cpufreq core takes the responsibility of invoking cpufreq_freq_transition_begin() and cpufreq_freq_transition_end() for those cpufreq drivers that define the ->target_index callback but don't set the ASYNC_NOTIFICATION flag. The powernow-k6 cpufreq driver falls under this category, but this driver was invoking the _begin() and _end() APIs itself around frequency transitions, which led to double invocation of the _begin() API. The _begin API makes contending callers wait until the previous invocation is complete. Hence, the powernow-k6 driver ended up waiting on itself, leading to system hangs during boot. Fix this by removing the calls to the _begin() and _end() APIs from the powernow-k6 driver, since they rightly belong to the cpufreq core. (Note that during ->exit(), the powernow-k6 driver sets the frequency without any help from the cpufreq core. So add explicit calls to the _begin() and _end() APIs around that frequency transition alone, to take care of that special case. Also, add a missing 'break' statement there.) Fixes: 12478cf0c55e (cpufreq: Make sure frequency transitions are serialized) Signed-off-by: Srivatsa S. Bhat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/powernow-k6.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/cpufreq/powernow-k6.c b/drivers/cpufreq/powernow-k6.c index 695a68cfdcd4..78904e6ca4a0 100644 --- a/drivers/cpufreq/powernow-k6.c +++ b/drivers/cpufreq/powernow-k6.c @@ -138,22 +138,14 @@ static void powernow_k6_set_cpu_multiplier(unsigned int best_i) static int powernow_k6_target(struct cpufreq_policy *policy, unsigned int best_i) { - struct cpufreq_freqs freqs; if (clock_ratio[best_i].driver_data > max_multiplier) { printk(KERN_ERR PFX "invalid target frequency\n"); return -EINVAL; } - freqs.old = busfreq * powernow_k6_get_cpu_multiplier(); - freqs.new = busfreq * clock_ratio[best_i].driver_data; - - cpufreq_freq_transition_begin(policy, &freqs); - powernow_k6_set_cpu_multiplier(best_i); - cpufreq_freq_transition_end(policy, &freqs, 0); - return 0; } @@ -229,8 +221,18 @@ static int powernow_k6_cpu_exit(struct cpufreq_policy *policy) unsigned int i; for (i = 0; (clock_ratio[i].frequency != CPUFREQ_TABLE_END); i++) { - if (clock_ratio[i].driver_data == max_multiplier) + if (clock_ratio[i].driver_data == max_multiplier) { + struct cpufreq_freqs freqs; + + freqs.old = policy->cur; + freqs.new = clock_ratio[i].frequency; + freqs.flags = 0; + + cpufreq_freq_transition_begin(policy, &freqs); powernow_k6_target(policy, i); + cpufreq_freq_transition_end(policy, &freqs, 0); + break; + } } return 0; } From 8997b185119966c62c6e95e7b010b4060407e358 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Tue, 29 Apr 2014 00:24:58 +0530 Subject: [PATCH 488/623] cpufreq: powernow-k7: Fix double invocation of cpufreq_freq_transition_begin/end During frequency transitions, the cpufreq core takes the responsibility of invoking cpufreq_freq_transition_begin() and cpufreq_freq_transition_end() for those cpufreq drivers that define the ->target_index callback but don't set the ASYNC_NOTIFICATION flag. The powernow-k7 cpufreq driver falls under this category, but this driver was invoking the _begin() and _end() APIs itself around frequency transitions, which led to double invocation of the _begin() API. The _begin API makes contending callers wait until the previous invocation is complete. Hence, the powernow-k7 driver ended up waiting on itself, leading to system hangs during boot. Fix this by removing the calls to the _begin() and _end() APIs from the powernow-k7 driver, since they rightly belong to the cpufreq core. Fixes: 12478cf0c55e (cpufreq: Make sure frequency transitions are serialized) Signed-off-by: Srivatsa S. Bhat Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/powernow-k7.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/cpufreq/powernow-k7.c b/drivers/cpufreq/powernow-k7.c index f911645c3f6d..e61e224475ad 100644 --- a/drivers/cpufreq/powernow-k7.c +++ b/drivers/cpufreq/powernow-k7.c @@ -269,8 +269,6 @@ static int powernow_target(struct cpufreq_policy *policy, unsigned int index) freqs.new = powernow_table[index].frequency; - cpufreq_freq_transition_begin(policy, &freqs); - /* Now do the magic poking into the MSRs. */ if (have_a0 == 1) /* A0 errata 5 */ @@ -290,8 +288,6 @@ static int powernow_target(struct cpufreq_policy *policy, unsigned int index) if (have_a0 == 1) local_irq_enable(); - cpufreq_freq_transition_end(policy, &freqs, 0); - return 0; } From 6712d2931933ada259b82f06c03a855b19937074 Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Mon, 28 Apr 2014 10:18:18 -0600 Subject: [PATCH 489/623] cpufreq: ppc-corenet-cpufreq: Fix __udivdi3 modpost error bfa709bc823fc32ee8dd5220d1711b46078235d8 (cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs) introduced a modpost error: ERROR: "__udivdi3" [drivers/cpufreq/ppc-corenet-cpufreq.ko] undefined! make[1]: *** [__modpost] Error 1 Fix this by avoiding 64 bit integer division. gcc version 4.8.2 Fixes: bfa709bc823f (cpufreq: powerpc: add cpufreq transition latency for FSL e500mc SoCs) Signed-off-by: Tim Gardner Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/ppc-corenet-cpufreq.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/ppc-corenet-cpufreq.c b/drivers/cpufreq/ppc-corenet-cpufreq.c index a1ca3dd04a8e..0af618abebaf 100644 --- a/drivers/cpufreq/ppc-corenet-cpufreq.c +++ b/drivers/cpufreq/ppc-corenet-cpufreq.c @@ -138,6 +138,7 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) struct cpufreq_frequency_table *table; struct cpu_data *data; unsigned int cpu = policy->cpu; + u64 transition_latency_hz; np = of_get_cpu_node(cpu, NULL); if (!np) @@ -205,8 +206,10 @@ static int corenet_cpufreq_cpu_init(struct cpufreq_policy *policy) for_each_cpu(i, per_cpu(cpu_mask, cpu)) per_cpu(cpu_data, i) = data; + transition_latency_hz = 12ULL * NSEC_PER_SEC; policy->cpuinfo.transition_latency = - (12ULL * NSEC_PER_SEC) / fsl_get_sys_freq(); + do_div(transition_latency_hz, fsl_get_sys_freq()); + of_node_put(np); return 0; From cc18b939e1efbc2a47f62dbd2b1df53d974df6b7 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 24 Apr 2014 14:31:53 -0500 Subject: [PATCH 490/623] RDMA/cxgb4: Fix endpoint mutex deadlocks In cases where the cm calls c4iw_modify_rc_qp() with the endpoint mutex held, they must be called with internal == 1. rx_data() and process_mpa_reply() are not doing this. This causes a deadlock because c4iw_modify_rc_qp() might call c4iw_ep_disconnect() in some !internal cases, and c4iw_ep_disconnect() acquires the endpoint mutex. The design was intended to only do the disconnect for !internal calls. Change rx_data(), FPDU_MODE case, to call c4iw_modify_rc_qp() with internal == 1, and then disconnect only after releasing the mutex. Change process_mpa_reply() to call c4iw_modify_rc_qp(TERMINATE) with internal == 1 and set a new attr flag telling it to send a TERMINATE message. Previously this was implied by !internal. Change process_mpa_reply() to return whether the caller should disconnect after releasing the endpoint mutex. Now rx_data() will do the disconnect in the cases where process_mpa_reply() wants to disconnect after the TERMINATE is sent. Change c4iw_modify_rc_qp() RTS->TERM to only disconnect if !internal, and to send a TERMINATE message if attrs->send_term is 1. Change abort_connection() to not aquire the ep mutex for setting the state, and make all calls to abort_connection() do so with the mutex held. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/cm.c | 31 +++++++++++++++++--------- drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 1 + drivers/infiniband/hw/cxgb4/qp.c | 9 ++++---- 3 files changed, 26 insertions(+), 15 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 185452abf32c..f9b04bc7e602 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -996,7 +996,7 @@ static void close_complete_upcall(struct c4iw_ep *ep, int status) static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) { PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); - state_set(&ep->com, ABORTING); + __state_set(&ep->com, ABORTING); set_bit(ABORT_CONN, &ep->com.history); return send_abort(ep, skb, gfp); } @@ -1154,7 +1154,7 @@ static int update_rx_credits(struct c4iw_ep *ep, u32 credits) return credits; } -static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) +static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) { struct mpa_message *mpa; struct mpa_v2_conn_params *mpa_v2_params; @@ -1164,6 +1164,7 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) struct c4iw_qp_attributes attrs; enum c4iw_qp_attr_mask mask; int err; + int disconnect = 0; PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); @@ -1173,7 +1174,7 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) * will abort the connection. */ if (stop_ep_timer(ep)) - return; + return 0; /* * If we get more than the supported amount of private data @@ -1195,7 +1196,7 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) * if we don't even have the mpa message, then bail. */ if (ep->mpa_pkt_len < sizeof(*mpa)) - return; + return 0; mpa = (struct mpa_message *) ep->mpa_pkt; /* Validate MPA header. */ @@ -1235,7 +1236,7 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) * We'll continue process when more data arrives. */ if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) - return; + return 0; if (mpa->flags & MPA_REJECT) { err = -ECONNREFUSED; @@ -1337,9 +1338,11 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) attrs.layer_etype = LAYER_MPA | DDP_LLP; attrs.ecode = MPA_NOMATCH_RTR; attrs.next_state = C4IW_QP_STATE_TERMINATE; + attrs.send_term = 1; err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, - C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); + C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); err = -ENOMEM; + disconnect = 1; goto out; } @@ -1355,9 +1358,11 @@ static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) attrs.layer_etype = LAYER_MPA | DDP_LLP; attrs.ecode = MPA_INSUFF_IRD; attrs.next_state = C4IW_QP_STATE_TERMINATE; + attrs.send_term = 1; err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, - C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); + C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); err = -ENOMEM; + disconnect = 1; goto out; } goto out; @@ -1366,7 +1371,7 @@ err: send_abort(ep, skb, GFP_KERNEL); out: connect_reply_upcall(ep, err); - return; + return disconnect; } static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) @@ -1524,6 +1529,7 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) unsigned int tid = GET_TID(hdr); struct tid_info *t = dev->rdev.lldi.tids; __u8 status = hdr->status; + int disconnect = 0; ep = lookup_tid(t, tid); if (!ep) @@ -1539,7 +1545,7 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) switch (ep->com.state) { case MPA_REQ_SENT: ep->rcv_seq += dlen; - process_mpa_reply(ep, skb); + disconnect = process_mpa_reply(ep, skb); break; case MPA_REQ_WAIT: ep->rcv_seq += dlen; @@ -1555,13 +1561,16 @@ static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) ep->com.state, ep->hwtid, status); attrs.next_state = C4IW_QP_STATE_TERMINATE; c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, - C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); + C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); + disconnect = 1; break; } default: break; } mutex_unlock(&ep->com.mutex); + if (disconnect) + c4iw_ep_disconnect(ep, 0, GFP_KERNEL); return 0; } @@ -3482,9 +3491,9 @@ static void process_timeout(struct c4iw_ep *ep) __func__, ep, ep->hwtid, ep->com.state); abort = 0; } - mutex_unlock(&ep->com.mutex); if (abort) abort_connection(ep, NULL, GFP_KERNEL); + mutex_unlock(&ep->com.mutex); c4iw_put_ep(&ep->com); } diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h index 7b8c5806a09d..7474b490760a 100644 --- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h +++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h @@ -435,6 +435,7 @@ struct c4iw_qp_attributes { u8 ecode; u16 sq_db_inc; u16 rq_db_inc; + u8 send_term; }; struct c4iw_qp { diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index 7b5114cb486f..f18ef34e8184 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -1388,11 +1388,12 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp, qhp->attr.layer_etype = attrs->layer_etype; qhp->attr.ecode = attrs->ecode; ep = qhp->ep; - disconnect = 1; - c4iw_get_ep(&qhp->ep->com); - if (!internal) + if (!internal) { + c4iw_get_ep(&qhp->ep->com); terminate = 1; - else { + disconnect = 1; + } else { + terminate = qhp->attr.send_term; ret = rdma_fini(rhp, qhp, ep); if (ret) goto err; From 92e5011ab0e073ab8fbb726c11529021e5e63973 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 24 Apr 2014 14:31:59 -0500 Subject: [PATCH 491/623] RDMA/cxgb4: Force T5 connections to use TAHOE congestion control This is required to work around a T5 HW issue. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/cm.c | 8 ++++++++ drivers/infiniband/hw/cxgb4/t4fw_ri_api.h | 14 ++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index f9b04bc7e602..1f863a96a480 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -587,6 +587,10 @@ static int send_connect(struct c4iw_ep *ep) opt2 |= SACK_EN(1); if (wscale && enable_tcp_window_scaling) opt2 |= WND_SCALE_EN(1); + if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { + opt2 |= T5_OPT_2_VALID; + opt2 |= V_CONG_CNTRL(CONG_ALG_TAHOE); + } t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { @@ -2018,6 +2022,10 @@ static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, if (tcph->ece && tcph->cwr) opt2 |= CCTRL_ECN(1); } + if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { + opt2 |= T5_OPT_2_VALID; + opt2 |= V_CONG_CNTRL(CONG_ALG_TAHOE); + } rpl = cplhdr(skb); INIT_TP_WR(rpl, ep->hwtid); diff --git a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h index dc193c292671..6121ca08fe58 100644 --- a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h +++ b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h @@ -836,4 +836,18 @@ struct ulptx_idata { #define V_RX_DACK_CHANGE(x) ((x) << S_RX_DACK_CHANGE) #define F_RX_DACK_CHANGE V_RX_DACK_CHANGE(1U) +enum { /* TCP congestion control algorithms */ + CONG_ALG_RENO, + CONG_ALG_TAHOE, + CONG_ALG_NEWRENO, + CONG_ALG_HIGHSPEED +}; + +#define S_CONG_CNTRL 14 +#define M_CONG_CNTRL 0x3 +#define V_CONG_CNTRL(x) ((x) << S_CONG_CNTRL) +#define G_CONG_CNTRL(x) (((x) >> S_CONG_CNTRL) & M_CONG_CNTRL) + +#define T5_OPT_2_VALID (1 << 31) + #endif /* _T4FW_RI_API_H_ */ From c2f9da92f2fd6dbf8f40ef4d5e00db688cc0416a Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Thu, 24 Apr 2014 14:32:04 -0500 Subject: [PATCH 492/623] RDMA/cxgb4: Only allow kernel db ringing for T4 devs The whole db drop avoidance stuff is for T4 only. So we cannot allow that to be enabled for T5 devices. Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/qp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index f18ef34e8184..086f62f5dc9e 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -1777,11 +1777,15 @@ int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, /* * Use SQ_PSN and RQ_PSN to pass in IDX_INC values for * ringing the queue db when we're in DB_FULL mode. + * Only allow this on T4 devices. */ attrs.sq_db_inc = attr->sq_psn; attrs.rq_db_inc = attr->rq_psn; mask |= (attr_mask & IB_QP_SQ_PSN) ? C4IW_QP_ATTR_SQ_DB : 0; mask |= (attr_mask & IB_QP_RQ_PSN) ? C4IW_QP_ATTR_RQ_DB : 0; + if (is_t5(to_c4iw_qp(ibqp)->rhp->rdev.lldi.adapter_type) && + (mask & (C4IW_QP_ATTR_SQ_DB|C4IW_QP_ATTR_RQ_DB))) + return -EINVAL; return c4iw_modify_qp(rhp, qhp, mask, &attrs, 0); } From 7d0a73a40c5ceb7524aa6a43f108de0dd8dbe3f0 Mon Sep 17 00:00:00 2001 From: Hariprasad S Date: Sat, 26 Apr 2014 00:51:18 +0530 Subject: [PATCH 493/623] RDMA/cxgb4: Update Kconfig to include Chelsio T5 adapter Signed-off-by: Hariprasad Shenai Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/Kconfig b/drivers/infiniband/hw/cxgb4/Kconfig index d4e8983fba53..23f38cf2c5cd 100644 --- a/drivers/infiniband/hw/cxgb4/Kconfig +++ b/drivers/infiniband/hw/cxgb4/Kconfig @@ -1,10 +1,10 @@ config INFINIBAND_CXGB4 - tristate "Chelsio T4 RDMA Driver" + tristate "Chelsio T4/T5 RDMA Driver" depends on CHELSIO_T4 && INET && (IPV6 || IPV6=n) select GENERIC_ALLOCATOR ---help--- - This is an iWARP/RDMA driver for the Chelsio T4 1GbE and - 10GbE adapters. + This is an iWARP/RDMA driver for the Chelsio T4 and T5 + 1GbE, 10GbE adapters and T5 40GbE adapter. For general information about Chelsio and our products, visit our website at . From 30c2117085bc4e05d091cee6eba79f069b41a9cd Mon Sep 17 00:00:00 2001 From: Haibin Wang Date: Tue, 29 Apr 2014 14:49:17 +0800 Subject: [PATCH 494/623] KVM: ARM: vgic: Fix the overlap check action about setting the GICD & GICC base address. Currently below check in vgic_ioaddr_overlap will always succeed, because the vgic dist base and vgic cpu base are still kept UNDEF after initialization. The code as follows will be return forever. if (IS_VGIC_ADDR_UNDEF(dist) || IS_VGIC_ADDR_UNDEF(cpu)) return 0; So, before invoking the vgic_ioaddr_overlap, it needs to set the corresponding base address firstly. Signed-off-by: Haibin Wang Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall --- virt/kvm/arm/vgic.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c index f9af48c9eb37..56ff9bebb577 100644 --- a/virt/kvm/arm/vgic.c +++ b/virt/kvm/arm/vgic.c @@ -1667,10 +1667,11 @@ static int vgic_ioaddr_assign(struct kvm *kvm, phys_addr_t *ioaddr, if (addr + size < addr) return -EINVAL; + *ioaddr = addr; ret = vgic_ioaddr_overlap(kvm); if (ret) - return ret; - *ioaddr = addr; + *ioaddr = VGIC_ADDR_UNDEF; + return ret; } From 82a5619410d4c4df65c04272db198eca5a867c18 Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Tue, 8 Apr 2014 10:04:32 +0100 Subject: [PATCH 495/623] clocksource: arch_arm_timer: Fix age-old arch timer C3STOP detection issue ARM arch timers are tightly coupled with the CPU logic and lose context on platform implementing HW power management when cores are powered down at run-time. Marking the arch timers as C3STOP regardless of power management capabilities causes issues on platforms with no power management, since in that case the arch timers cannot possibly enter states where the timer loses context at runtime and therefore can always be used as a high resolution clockevent device. In order to fix the C3STOP issue in a way compliant with how real HW works, this patch adds a boolean property to the arch timer bindings to define if the arch timer is managed by an always-on power domain. This power domain is present on all ARM platforms to date, and manages HW that must not be turned off, whatever the state of other HW components (eg power controller). On platforms with no power management capabilities, it is the only power domain present, which encompasses and manages power supply for all HW components in the system. If the timer is powered by the always-on power domain, the always-on property must be present in the bindings which means that the timer cannot be shutdown at runtime, so it is not a C3STOP clockevent device. If the timer binding does not contain the always-on property, the timer is assumed to be power-gateable, hence it must be defined as a C3STOP clockevent device. Cc: Daniel Lezcano Cc: Magnus Damm Cc: Marc Carino Cc: Mark Rutland Acked-by: Marc Zyngier Acked-by: Rob Herring Signed-off-by: Lorenzo Pieralisi Signed-off-by: Daniel Lezcano --- Documentation/devicetree/bindings/arm/arch_timer.txt | 3 +++ drivers/clocksource/arm_arch_timer.c | 6 +++++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/arm/arch_timer.txt b/Documentation/devicetree/bindings/arm/arch_timer.txt index 06fc7602593a..37b2cafa4e52 100644 --- a/Documentation/devicetree/bindings/arm/arch_timer.txt +++ b/Documentation/devicetree/bindings/arm/arch_timer.txt @@ -19,6 +19,9 @@ to deliver its interrupts via SPIs. - clock-frequency : The frequency of the main counter, in Hz. Optional. +- always-on : a boolean property. If present, the timer is powered through an + always-on power domain, therefore it never loses context. + Example: timer { diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 57e823c44d2a..5163ec13429d 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -66,6 +66,7 @@ static int arch_timer_ppi[MAX_TIMER_PPI]; static struct clock_event_device __percpu *arch_timer_evt; static bool arch_timer_use_virtual = true; +static bool arch_timer_c3stop; static bool arch_timer_mem_use_virtual; /* @@ -263,7 +264,8 @@ static void __arch_timer_setup(unsigned type, clk->features = CLOCK_EVT_FEAT_ONESHOT; if (type == ARCH_CP15_TIMER) { - clk->features |= CLOCK_EVT_FEAT_C3STOP; + if (arch_timer_c3stop) + clk->features |= CLOCK_EVT_FEAT_C3STOP; clk->name = "arch_sys_timer"; clk->rating = 450; clk->cpumask = cpumask_of(smp_processor_id()); @@ -665,6 +667,8 @@ static void __init arch_timer_init(struct device_node *np) } } + arch_timer_c3stop = !of_property_read_bool(np, "always-on"); + arch_timer_register(); arch_timer_common_init(); } From 9afa27ce9414c92e271b0d7eec937bd9f5565da5 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 26 Apr 2014 09:32:16 +0400 Subject: [PATCH 496/623] clocksource: nspire: Fix compiler warning CC drivers/clocksource/zevio-timer.o drivers/clocksource/zevio-timer.c:215:1: warning: comparison of distinct pointer types lacks a cast [enabled by default] Signed-off-by: Alexander Shiyan Signed-off-by: Daniel Lezcano --- drivers/clocksource/zevio-timer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/zevio-timer.c b/drivers/clocksource/zevio-timer.c index ca81809d159d..7ce442148c3f 100644 --- a/drivers/clocksource/zevio-timer.c +++ b/drivers/clocksource/zevio-timer.c @@ -212,4 +212,9 @@ error_free: return ret; } -CLOCKSOURCE_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_add); +static void __init zevio_timer_init(struct device_node *node) +{ + BUG_ON(zevio_timer_add(node)); +} + +CLOCKSOURCE_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_init); From 58b116bce13612e5aa6fcd49ecbd4cf8bb59e835 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Tue, 29 Apr 2014 12:05:22 +0100 Subject: [PATCH 497/623] drivercore: deferral race condition fix When the kernel is built with CONFIG_PREEMPT it is possible to reach a state when all modules loaded but some driver still stuck in the deferred list and there is a need for external event to kick the deferred queue to probe these drivers. The issue has been observed on embedded systems with CONFIG_PREEMPT enabled, audio support built as modules and using nfsroot for root filesystem. The following log fragment shows such sequence when all audio modules were loaded but the sound card is not present since the machine driver has failed to probe due to missing dependency during it's probe. The board is am335x-evmsk (McASP<->tlv320aic3106 codec) with davinci-evm machine driver: ... [ 12.615118] davinci-mcasp 4803c000.mcasp: davinci_mcasp_probe: ENTER [ 12.719969] davinci_evm sound.3: davinci_evm_probe: ENTER [ 12.725753] davinci_evm sound.3: davinci_evm_probe: snd_soc_register_card [ 12.753846] davinci-mcasp 4803c000.mcasp: davinci_mcasp_probe: snd_soc_register_component [ 12.922051] davinci-mcasp 4803c000.mcasp: davinci_mcasp_probe: snd_soc_register_component DONE [ 12.950839] davinci_evm sound.3: ASoC: platform (null) not registered [ 12.957898] davinci_evm sound.3: davinci_evm_probe: snd_soc_register_card DONE (-517) [ 13.099026] davinci-mcasp 4803c000.mcasp: Kicking the deferred list [ 13.177838] davinci-mcasp 4803c000.mcasp: really_probe: probe_count = 2 [ 13.194130] davinci_evm sound.3: snd_soc_register_card failed (-517) [ 13.346755] davinci_mcasp_driver_init: LEAVE [ 13.377446] platform sound.3: Driver davinci_evm requests probe deferral [ 13.592527] platform sound.3: really_probe: probe_count = 0 In the log the machine driver enters it's probe at 12.719969 (this point it has been removed from the deferred lists). McASP driver already executing it's probing (since 12.615118). The machine driver tries to construct the sound card (12.950839) but did not found one of the components so it fails. After this McASP driver registers all the ASoC components (the machine driver still in it's probe function after it failed to construct the card) and the deferred work is prepared at 13.099026 (note that this time the machine driver is not in the lists so it is not going to be handled when the work is executing). Lastly the machine driver exit from it's probe and the core places it to the deferred list but there will be no other driver going to load and the deferred queue is not going to be kicked again - till we have external event like connecting USB stick, etc. The proposed solution is to try the deferred queue once more when the last driver is asking for deferring and we had drivers loaded while this last driver was probing. This way we can avoid drivers stuck in the deferred queue. Signed-off-by: Grant Likely Reviewed-by: Peter Ujfalusi Tested-by: Peter Ujfalusi Acked-by: Greg Kroah-Hartman Cc: Mark Brown Cc: Stable # v3.4+ --- drivers/base/dd.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 8986b9f22781..62ec61e8f84a 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -52,6 +52,7 @@ static DEFINE_MUTEX(deferred_probe_mutex); static LIST_HEAD(deferred_probe_pending_list); static LIST_HEAD(deferred_probe_active_list); static struct workqueue_struct *deferred_wq; +static atomic_t deferred_trigger_count = ATOMIC_INIT(0); /** * deferred_probe_work_func() - Retry probing devices in the active list. @@ -135,6 +136,17 @@ static bool driver_deferred_probe_enable = false; * This functions moves all devices from the pending list to the active * list and schedules the deferred probe workqueue to process them. It * should be called anytime a driver is successfully bound to a device. + * + * Note, there is a race condition in multi-threaded probe. In the case where + * more than one device is probing at the same time, it is possible for one + * probe to complete successfully while another is about to defer. If the second + * depends on the first, then it will get put on the pending list after the + * trigger event has already occured and will be stuck there. + * + * The atomic 'deferred_trigger_count' is used to determine if a successful + * trigger has occurred in the midst of probing a driver. If the trigger count + * changes in the midst of a probe, then deferred processing should be triggered + * again. */ static void driver_deferred_probe_trigger(void) { @@ -147,6 +159,7 @@ static void driver_deferred_probe_trigger(void) * into the active list so they can be retried by the workqueue */ mutex_lock(&deferred_probe_mutex); + atomic_inc(&deferred_trigger_count); list_splice_tail_init(&deferred_probe_pending_list, &deferred_probe_active_list); mutex_unlock(&deferred_probe_mutex); @@ -265,6 +278,7 @@ static DECLARE_WAIT_QUEUE_HEAD(probe_waitqueue); static int really_probe(struct device *dev, struct device_driver *drv) { int ret = 0; + int local_trigger_count = atomic_read(&deferred_trigger_count); atomic_inc(&probe_count); pr_debug("bus: '%s': %s: probing driver %s with device %s\n", @@ -310,6 +324,9 @@ probe_failed: /* Driver requested deferred probing */ dev_info(dev, "Driver %s requests probe deferral\n", drv->name); driver_deferred_probe_add(dev); + /* Did a trigger occur while probing? Need to re-trigger if yes */ + if (local_trigger_count != atomic_read(&deferred_trigger_count)) + driver_deferred_probe_trigger(); } else if (ret != -ENODEV && ret != -ENXIO) { /* driver matched but the probe failed */ printk(KERN_WARNING From fbcde3d8b9c2d97704b8ca299e5266147b24c8ee Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Tue, 29 Apr 2014 11:22:04 -0400 Subject: [PATCH 498/623] dm thin: use INIT_WORK_ONSTACK in noflush_work to avoid ODEBUG warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use INIT_WORK_ONSTACK to silence "ODEBUG: object is on stack, but not annotated". Reported-by: Zdeněk Kabeláč Signed-off-by: Mike Snitzer Acked-by: Joe Thornber --- drivers/md/dm-thin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 28fc282b61b2..13abade76ad9 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1625,7 +1625,7 @@ static void noflush_work(struct thin_c *tc, void (*fn)(struct work_struct *)) { struct noflush_work w; - INIT_WORK(&w.worker, fn); + INIT_WORK_ONSTACK(&w.worker, fn); w.tc = tc; atomic_set(&w.complete, 0); init_waitqueue_head(&w.wait); From 6ba736dd02e7b3658c344efeb2f4a096a6785d83 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 29 Apr 2014 18:38:21 +0200 Subject: [PATCH 499/623] ALSA: hda - Suppress CORBRP clear on Nvidia controller chips The recent commit (ca460f86521) changed the CORB RP reset procedure to follow the specification with a couple of sanity checks. Unfortunately, Nvidia controller chips seem not following this way, and spew the warning messages like: snd_hda_intel 0000:00:10.1: CORB reset timeout#1, CORBRP = 0 This patch adds the workaround for such chips. It just skips the new reset procedure for the known broken chips. Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_controller.c | 34 ++++++++++++++++++---------------- sound/pci/hda/hda_intel.c | 3 ++- sound/pci/hda/hda_priv.h | 1 + 3 files changed, 21 insertions(+), 17 deletions(-) diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c index 248b90abb882..480bbddbd801 100644 --- a/sound/pci/hda/hda_controller.c +++ b/sound/pci/hda/hda_controller.c @@ -1059,24 +1059,26 @@ static void azx_init_cmd_io(struct azx *chip) /* reset the corb hw read pointer */ azx_writew(chip, CORBRP, ICH6_CORBRP_RST); - for (timeout = 1000; timeout > 0; timeout--) { - if ((azx_readw(chip, CORBRP) & ICH6_CORBRP_RST) == ICH6_CORBRP_RST) - break; - udelay(1); - } - if (timeout <= 0) - dev_err(chip->card->dev, "CORB reset timeout#1, CORBRP = %d\n", - azx_readw(chip, CORBRP)); + if (!(chip->driver_caps & AZX_DCAPS_CORBRP_SELF_CLEAR)) { + for (timeout = 1000; timeout > 0; timeout--) { + if ((azx_readw(chip, CORBRP) & ICH6_CORBRP_RST) == ICH6_CORBRP_RST) + break; + udelay(1); + } + if (timeout <= 0) + dev_err(chip->card->dev, "CORB reset timeout#1, CORBRP = %d\n", + azx_readw(chip, CORBRP)); - azx_writew(chip, CORBRP, 0); - for (timeout = 1000; timeout > 0; timeout--) { - if (azx_readw(chip, CORBRP) == 0) - break; - udelay(1); + azx_writew(chip, CORBRP, 0); + for (timeout = 1000; timeout > 0; timeout--) { + if (azx_readw(chip, CORBRP) == 0) + break; + udelay(1); + } + if (timeout <= 0) + dev_err(chip->card->dev, "CORB reset timeout#2, CORBRP = %d\n", + azx_readw(chip, CORBRP)); } - if (timeout <= 0) - dev_err(chip->card->dev, "CORB reset timeout#2, CORBRP = %d\n", - azx_readw(chip, CORBRP)); /* enable corb dma */ azx_writeb(chip, CORBCTL, ICH6_CORBCTL_RUN); diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index d6bca62ef387..b540ad71eb0d 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -249,7 +249,8 @@ enum { /* quirks for Nvidia */ #define AZX_DCAPS_PRESET_NVIDIA \ (AZX_DCAPS_NVIDIA_SNOOP | AZX_DCAPS_RIRB_DELAY | AZX_DCAPS_NO_MSI |\ - AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_NO_64BIT) + AZX_DCAPS_ALIGN_BUFSIZE | AZX_DCAPS_NO_64BIT |\ + AZX_DCAPS_CORBRP_SELF_CLEAR) #define AZX_DCAPS_PRESET_CTHDA \ (AZX_DCAPS_NO_MSI | AZX_DCAPS_POSFIX_LPIB | AZX_DCAPS_4K_BDLE_BOUNDARY) diff --git a/sound/pci/hda/hda_priv.h b/sound/pci/hda/hda_priv.h index ba38b819f984..4a7cb01fa912 100644 --- a/sound/pci/hda/hda_priv.h +++ b/sound/pci/hda/hda_priv.h @@ -189,6 +189,7 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 }; #define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */ #define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */ #define AZX_DCAPS_I915_POWERWELL (1 << 27) /* HSW i915 powerwell support */ +#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */ /* position fix mode */ enum { From fe337ac2839521b360f828b3ebd992d597b1ad16 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 28 Apr 2014 21:07:31 +0200 Subject: [PATCH 500/623] netfilter: ctnetlink: don't add null bindings if no nat requested commit 0eba801b64cc8284d9024c7ece30415a2b981a72 tried to fix a race where nat initialisation can happen after ctnetlink-created conntrack has been created. However, it causes the nat module(s) to be loaded needlessly on systems that are not using NAT. Fortunately, we do not have to create null bindings in that case. conntracks injected via ctnetlink always have the CONFIRMED bit set, which prevents addition of the nat extension in nf_nat_ipv4/6_fn(). We only need to make sure that either no nat extension is added or that we've created both src and dst manips. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_netlink.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index ccc46fa5edbc..58579634427d 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -1336,6 +1336,9 @@ ctnetlink_setup_nat(struct nf_conn *ct, const struct nlattr * const cda[]) #ifdef CONFIG_NF_NAT_NEEDED int ret; + if (!cda[CTA_NAT_DST] && !cda[CTA_NAT_SRC]) + return 0; + ret = ctnetlink_parse_nat_setup(ct, NF_NAT_MANIP_DST, cda[CTA_NAT_DST]); if (ret < 0) From 3eba563e280101209bad27d40bfc83ddf1489234 Mon Sep 17 00:00:00 2001 From: Kieran Clancy Date: Wed, 30 Apr 2014 00:21:20 +0930 Subject: [PATCH 501/623] ACPI / EC: Process rather than discard events in acpi_ec_clear Address a regression caused by commit ad332c8a4533: (ACPI / EC: Clear stale EC events on Samsung systems) After the earlier patch, there was found to be a race condition on some earlier Samsung systems (N150/N210/N220). The function acpi_ec_clear was sometimes discarding a new EC event before its GPE was triggered by the system. In the case of these systems, this meant that the "lid open" event was not registered on resume if that was the cause of the wake, leading to problems when attempting to close the lid to suspend again. After testing on a number of Samsung systems, both those affected by the previous EC bug and those affected by the race condition, it seemed that the best course of action was to process rather than discard the events. On Samsung systems which accumulate stale EC events, there does not seem to be any adverse side-effects of running the associated _Q methods. This patch adds an argument to the static function acpi_ec_sync_query so that it may be used within the acpi_ec_clear loop in place of acpi_ec_query_unlocked which was used previously. With thanks to Stefan Biereigel for reporting the issue, and for all the people who helped test the new patch on affected systems. Fixes: ad332c8a4533 (ACPI / EC: Clear stale EC events on Samsung systems) References: https://lkml.kernel.org/r/532FE3B2.9060808@biereigel-wb.de References: https://bugzilla.kernel.org/show_bug.cgi?id=44161#c173 Reported-by: Stefan Biereigel Signed-off-by: Kieran Clancy Tested-by: Stefan Biereigel Tested-by: Dennis Jansen Tested-by: Nicolas Porcel Tested-by: Maurizio D'Addona Tested-by: Juan Manuel Cabo Tested-by: Giannis Koutsou Tested-by: Kieran Clancy Cc: 3.14+ # 3.14+ Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index d7d32c28829b..ad11ba4a412d 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -206,13 +206,13 @@ unlock: spin_unlock_irqrestore(&ec->lock, flags); } -static int acpi_ec_sync_query(struct acpi_ec *ec); +static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data); static int ec_check_sci_sync(struct acpi_ec *ec, u8 state) { if (state & ACPI_EC_FLAG_SCI) { if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) - return acpi_ec_sync_query(ec); + return acpi_ec_sync_query(ec, NULL); } return 0; } @@ -443,10 +443,8 @@ acpi_handle ec_get_handle(void) EXPORT_SYMBOL(ec_get_handle); -static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 *data); - /* - * Clears stale _Q events that might have accumulated in the EC. + * Process _Q events that might have accumulated in the EC. * Run with locked ec mutex. */ static void acpi_ec_clear(struct acpi_ec *ec) @@ -455,7 +453,7 @@ static void acpi_ec_clear(struct acpi_ec *ec) u8 value = 0; for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) { - status = acpi_ec_query_unlocked(ec, &value); + status = acpi_ec_sync_query(ec, &value); if (status || !value) break; } @@ -582,13 +580,18 @@ static void acpi_ec_run(void *cxt) kfree(handler); } -static int acpi_ec_sync_query(struct acpi_ec *ec) +static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data) { u8 value = 0; int status; struct acpi_ec_query_handler *handler, *copy; - if ((status = acpi_ec_query_unlocked(ec, &value))) + + status = acpi_ec_query_unlocked(ec, &value); + if (data) + *data = value; + if (status) return status; + list_for_each_entry(handler, &ec->list, node) { if (value == handler->query_bit) { /* have custom handler for this bit */ @@ -612,7 +615,7 @@ static void acpi_ec_gpe_query(void *ec_cxt) if (!ec) return; mutex_lock(&ec->mutex); - acpi_ec_sync_query(ec); + acpi_ec_sync_query(ec, NULL); mutex_unlock(&ec->mutex); } From b3413afb4a8995a67f5df6218c6d0ff3a53a6978 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 29 Apr 2014 00:20:34 +0200 Subject: [PATCH 502/623] PNP: Fix compile error in quirks.c Fix the compile error: drivers/pnp/quirks.c:393:2: error: implicit declaration of function 'pcibios_bus_to_resource' that occurs when building with CONFIG_PCI unset. The quirk is only relevent to Intel devices, so we could use "#if defined(CONFIG_X86) && defined(CONFIG_PCI)" instead, but testing CONFIG_X86 is not strictly necessary. Fixes: cb171f7abb9a (PNP: Work around BIOS defects in Intel MCH area reporting) Reported-by: Randy Dunlap Signed-off-by: Bjorn Helgaas Signed-off-by: Rafael J. Wysocki --- drivers/pnp/quirks.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index 3736bc408adb..ebf0d6710b5a 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -335,7 +335,7 @@ static void quirk_amd_mmconfig_area(struct pnp_dev *dev) } #endif -#ifdef CONFIG_X86 +#ifdef CONFIG_PCI /* Device IDs of parts that have 32KB MCH space */ static const unsigned int mch_quirk_devices[] = { 0x0154, /* Ivy Bridge */ @@ -440,7 +440,7 @@ static struct pnp_fixup pnp_fixups[] = { #ifdef CONFIG_AMD_NB {"PNP0c01", quirk_amd_mmconfig_area}, #endif -#ifdef CONFIG_X86 +#ifdef CONFIG_PCI {"PNP0c02", quirk_intel_mch}, #endif {""} From 25c8b5c3048cb6c98d402ca8d4735ccf910f727c Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Tue, 15 Apr 2014 15:33:01 +0200 Subject: [PATCH 503/623] drm/exynos: balance framebuffer refcount exynos_drm_crtc_mode_set assigns primary framebuffer to plane without taking reference. Then during framebuffer removal it is dereferenced twice, causing oops. The patch fixes it. Signed-off-by: Andrzej Hajda Signed-off-by: Inki Dae Signed-off-by: Dave Airlie --- drivers/gpu/drm/exynos/exynos_drm_crtc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c index e930d4fe29c7..1ef5ab9c9d51 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c @@ -145,6 +145,7 @@ exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, plane->crtc = crtc; plane->fb = crtc->primary->fb; + drm_framebuffer_reference(plane->fb); return 0; } From e2a75c446e38ddf32ccdeb6e8cf2baa61fd8510f Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Thu, 10 Apr 2014 20:24:03 +0900 Subject: [PATCH 504/623] MAINTAINERS: update maintainer entry for Exynos DP driver Recently, Exynos DP driver was moved from drivers/video/exynos/ directory to drivers/gpu/drm/exynos/ directory. So, I update and add maintainer entry for Exynos DP driver. Signed-off-by: Jingoo Han Signed-off-by: Inki Dae Signed-off-by: Dave Airlie --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e67ea2442041..ea44a57f790e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3485,6 +3485,12 @@ S: Maintained F: drivers/extcon/ F: Documentation/extcon/ +EXYNOS DP DRIVER +M: Jingoo Han +L: dri-devel@lists.freedesktop.org +S: Maintained +F: drivers/gpu/drm/exynos/exynos_dp* + EXYNOS MIPI DISPLAY DRIVERS M: Inki Dae M: Donghwa Lee From 293d3f6a70704691c3539bc3630ba1acbabc5c43 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Thu, 17 Apr 2014 19:08:40 +0900 Subject: [PATCH 505/623] drm/exynos: dsi: use IS_ERR() to check devm_ioremap_resource() results devm_ioremap_resource() returns an error pointer, not NULL. Thus, the result should be checked with IS_ERR(). Signed-off-by: Jingoo Han Signed-off-by: Inki Dae Signed-off-by: Dave Airlie --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index eb73e3bf2a0c..4ac438187568 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1426,9 +1426,9 @@ static int exynos_dsi_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); dsi->reg_base = devm_ioremap_resource(&pdev->dev, res); - if (!dsi->reg_base) { + if (IS_ERR(dsi->reg_base)) { dev_err(&pdev->dev, "failed to remap io region\n"); - return -EADDRNOTAVAIL; + return PTR_ERR(dsi->reg_base); } dsi->phy = devm_phy_get(&pdev->dev, "dsim"); From b8eade24c9891b8f153c40cf310ef4696c873af9 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Tue, 22 Apr 2014 14:45:32 +0900 Subject: [PATCH 506/623] drm/exynos: use %pad for dma_addr_t Use %pad for dma_addr_t, because a dma_addr_t type can vary based on build options. So, it prevents possible build warnings in printks. Signed-off-by: Jingoo Han Reviewed-by: Daniel Kurtz Signed-off-by: Inki Dae Signed-off-by: Dave Airlie --- drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_vidi.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c index c786cd4f457b..2a3ad24276f8 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c @@ -263,7 +263,7 @@ struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev, buffer->sgt = sgt; exynos_gem_obj->base.import_attach = attach; - DRM_DEBUG_PRIME("dma_addr = 0x%x, size = 0x%lx\n", buffer->dma_addr, + DRM_DEBUG_PRIME("dma_addr = %pad, size = 0x%lx\n", &buffer->dma_addr, buffer->size); return &exynos_gem_obj->base; diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c index 7afead9c3f30..852f2dadaebd 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c @@ -220,7 +220,7 @@ static void vidi_win_commit(struct exynos_drm_manager *mgr, int zpos) win_data->enabled = true; - DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr); + DRM_DEBUG_KMS("dma_addr = %pad\n", &win_data->dma_addr); if (ctx->vblank_on) schedule_work(&ctx->work); From 6c6c0d5a1c949d2e084706f9e5fb1fccc175b265 Mon Sep 17 00:00:00 2001 From: Stuart Hayes Date: Tue, 29 Apr 2014 17:55:02 -0500 Subject: [PATCH 507/623] hrtimer: Prevent all reprogramming if hang detected If the last hrtimer interrupt detected a hang it sets hang_detected=1 and programs the clock event device with a delay to let the system make progress. If hang_detected == 1, we prevent reprogramming of the clock event device in hrtimer_reprogram() but not in hrtimer_force_reprogram(). This can lead to the following situation: hrtimer_interrupt() hang_detected = 1; program ce device to Xms from now (hang delay) We have two timers pending: T1 expires 50ms from now T2 expires 5s from now Now T1 gets canceled, which causes hrtimer_force_reprogram() to be invoked, which in turn programs the clock event device to T2 (5 seconds from now). Any hrtimer_start after that will not reprogram the hardware due to hang_detected still being set. So we effectivly block all timers until the T2 event fires and cleans up the hang situation. Add a check for hang_detected to hrtimer_force_reprogram() which prevents the reprogramming of the hang delay in the hardware timer. The subsequent hrtimer_interrupt will resolve all outstanding issues. [ tglx: Rewrote subject and changelog and fixed up the comment in hrtimer_force_reprogram() ] Signed-off-by: Stuart Hayes Link: http://lkml.kernel.org/r/53602DC6.2060101@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner --- kernel/hrtimer.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index d55092ceee29..e3724fdac2da 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -569,6 +569,23 @@ hrtimer_force_reprogram(struct hrtimer_cpu_base *cpu_base, int skip_equal) cpu_base->expires_next.tv64 = expires_next.tv64; + /* + * If a hang was detected in the last timer interrupt then we + * leave the hang delay active in the hardware. We want the + * system to make progress. That also prevents the following + * scenario: + * T1 expires 50ms from now + * T2 expires 5s from now + * + * T1 is removed, so this code is called and would reprogram + * the hardware to 5s from now. Any hrtimer_start after that + * will not reprogram the hardware due to hang_detected being + * set. So we'd effectivly block all timers until the T2 event + * fires. + */ + if (cpu_base->hang_detected) + return; + if (cpu_base->expires_next.tv64 != KTIME_MAX) tick_program_event(cpu_base->expires_next, 1); } From 012a45e3f4af68e86d85cce060c6c2fed56498b2 Mon Sep 17 00:00:00 2001 From: Leon Ma Date: Wed, 30 Apr 2014 16:43:10 +0800 Subject: [PATCH 508/623] hrtimer: Prevent remote enqueue of leftmost timers If a cpu is idle and starts an hrtimer which is not pinned on that same cpu, the nohz code might target the timer to a different cpu. In the case that we switch the cpu base of the timer we already have a sanity check in place, which determines whether the timer is earlier than the current leftmost timer on the target cpu. In that case we enqueue the timer on the current cpu because we cannot reprogram the clock event device on the target. If the timers base is already the target CPU we do not have this sanity check in place so we enqueue the timer as the leftmost timer in the target cpus rb tree, but we cannot reprogram the clock event device on the target cpu. So the timer expires late and subsequently prevents the reprogramming of the target cpu clock event device until the previously programmed event fires or a timer with an earlier expiry time gets enqueued on the target cpu itself. Add the same target check as we have for the switch base case and start the timer on the current cpu if it would become the leftmost timer on the target. [ tglx: Rewrote subject and changelog ] Signed-off-by: Leon Ma Link: http://lkml.kernel.org/r/1398847391-5994-1-git-send-email-xindong.ma@intel.com Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner --- kernel/hrtimer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index e3724fdac2da..6b715c0af1b1 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -234,6 +234,11 @@ again: goto again; } timer->base = new_base; + } else { + if (cpu != this_cpu && hrtimer_check_target(timer, new_base)) { + cpu = this_cpu; + goto again; + } } return new_base; } From 98a01e779f3c66b0b11cd7e64d531c0e41c95762 Mon Sep 17 00:00:00 2001 From: Jiri Bohac Date: Fri, 18 Apr 2014 17:23:11 +0200 Subject: [PATCH 509/623] timer: Prevent overflow in apply_slack On architectures with sizeof(int) < sizeof (long), the computation of mask inside apply_slack() can be undefined if the computed bit is > 32. E.g. with: expires = 0xffffe6f5 and slack = 25, we get: expires_limit = 0x20000000e bit = 33 mask = (1 << 33) - 1 /* undefined */ On x86, mask becomes 1 and and the slack is not applied properly. On s390, mask is -1, expires is set to 0 and the timer fires immediately. Use 1UL << bit to solve that issue. Suggested-by: Deborah Townsend Signed-off-by: Jiri Bohac Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20140418152310.GA13654@midget.suse.cz Signed-off-by: Thomas Gleixner --- kernel/timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/timer.c b/kernel/timer.c index 87bd529879c2..3bb01a323b2a 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -838,7 +838,7 @@ unsigned long apply_slack(struct timer_list *timer, unsigned long expires) bit = find_last_bit(&mask, BITS_PER_LONG); - mask = (1 << bit) - 1; + mask = (1UL << bit) - 1; expires_limit = expires_limit & ~(mask); From e27a08f53d081b33c988db954008d879b2ab8b39 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Sun, 27 Apr 2014 11:12:21 +0200 Subject: [PATCH 510/623] perf tools: Use LDFLAGS instead of ALL_LDFLAGS We no longer use ALL_LDFLAGS, Replacing with LDFLAGS. Acked-by: Namhyung Kim Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1398675770-3109-1-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/Makefile.perf | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index e96923310d57..895edd32930c 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -589,7 +589,7 @@ $(GTK_OBJS): $(OUTPUT)%.o: %.c $(LIB_H) $(QUIET_CC)$(CC) -o $@ -c -fPIC $(CFLAGS) $(GTK_CFLAGS) $< $(OUTPUT)libperf-gtk.so: $(GTK_OBJS) $(PERFLIBS) - $(QUIET_LINK)$(CC) -o $@ -shared $(ALL_LDFLAGS) $(filter %.o,$^) $(GTK_LIBS) + $(QUIET_LINK)$(CC) -o $@ -shared $(LDFLAGS) $(filter %.o,$^) $(GTK_LIBS) $(OUTPUT)builtin-help.o: builtin-help.c $(OUTPUT)common-cmds.h $(OUTPUT)PERF-CFLAGS $(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) \ From 2cf9040714f3e63f94935c9f1ed4e5bc54265ddb Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 23 Apr 2014 16:53:25 +0200 Subject: [PATCH 511/623] perf tools: Fix bfd dependency libraries detection There's false assumption in the library detection code assuming -liberty and -lz are always present once bfd is detected. The fails on Ubuntu (14.04) as reported by Ingo. Forcing the bdf dependency libraries detection any time bfd library is detected. Reported-by: Ingo Molnar Tested-by: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1398676935-6615-1-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/config/Makefile | 34 +++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 11 deletions(-) diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index a71fb395e38f..a57d59e7fe4b 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -194,7 +194,10 @@ VF_FEATURE_TESTS = \ stackprotector-all \ timerfd \ libunwind-debug-frame \ - bionic + bionic \ + liberty \ + liberty-z \ + cplus-demangle # Set FEATURE_CHECK_(C|LD)FLAGS-all for all CORE_FEATURE_TESTS features. # If in the future we need per-feature checks/flags for features not @@ -512,7 +515,21 @@ else endif ifeq ($(feature-libbfd), 1) - EXTLIBS += -lbfd -lz -liberty + EXTLIBS += -lbfd + + # call all detections now so we get correct + # status in VF output + $(call feature_check,liberty) + $(call feature_check,liberty-z) + $(call feature_check,cplus-demangle) + + ifeq ($(feature-liberty), 1) + EXTLIBS += -liberty + else + ifeq ($(feature-liberty-z), 1) + EXTLIBS += -liberty -lz + endif + endif endif ifdef NO_DEMANGLE @@ -523,15 +540,10 @@ else CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT else ifneq ($(feature-libbfd), 1) - $(call feature_check,liberty) - ifeq ($(feature-liberty), 1) - EXTLIBS += -lbfd -liberty - else - $(call feature_check,liberty-z) - ifeq ($(feature-liberty-z), 1) - EXTLIBS += -lbfd -liberty -lz - else - $(call feature_check,cplus-demangle) + ifneq ($(feature-liberty), 1) + ifneq ($(feature-liberty-z), 1) + # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT + # or any of 'bfd iberty z' trinity ifeq ($(feature-cplus-demangle), 1) EXTLIBS += -liberty CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT From 611ec127165b572f02823e152d6774e2145305a3 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Tue, 29 Apr 2014 09:53:40 +0200 Subject: [PATCH 512/623] perf tests: Add static build make test Adding test for building static perf build into the automated suite. Also available via following commands: $ make -f tests/make make_static - make_static: cd . && make -f Makefile DESTDIR=/tmp/tmp.7u5MlB4njo LDFLAGS=-static $ make -f tests/make make_static_O - make_static_O: cd . && make -f Makefile O=/tmp/tmp.Ay6r3wEmtX DESTDIR=/tmp/tmp.vK0KQwO0Vi LDFLAGS=-static Acked-by: David Ahern Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1398760413-7574-1-git-send-email-jolsa@kernel.org Signed-off-by: Jiri Olsa --- tools/perf/tests/make | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/perf/tests/make b/tools/perf/tests/make index 5daeae1cb4c0..2f92d6e7ee00 100644 --- a/tools/perf/tests/make +++ b/tools/perf/tests/make @@ -46,6 +46,7 @@ make_install_man := install-man make_install_html := install-html make_install_info := install-info make_install_pdf := install-pdf +make_static := LDFLAGS=-static # all the NO_* variable combined make_minimal := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 @@ -87,6 +88,7 @@ run += make_install_bin # run += make_install_info # run += make_install_pdf run += make_minimal +run += make_static ifneq ($(call has,ctags),) run += make_tags From 61d4290cc1f10588147b76b385875f06827d47ff Mon Sep 17 00:00:00 2001 From: Richard Yao Date: Sat, 26 Apr 2014 13:17:55 -0400 Subject: [PATCH 513/623] perf machine: Search for modules in %s/lib/modules/%s Modules installed outside of the kernel's build system should go into "%s/lib/modules/%s/extra", but at present, perf will only look at them when they are in "%s/lib/modules/%s/kernel". Lets encourage good citizenship by relaxing this requirement to "%s/lib/modules/%s". This way open source modules that are out-of-tree have no incentive to start populating a directory reserved for in-kernel modules and I can stop hex-editing my system's perf binary when profiling OSS out-of-tree modules. Feedback from Namhyung Kim correctly revealed that the hex-edits that I had been doing meant that perf was also traversing the build and source symlinks in %s/lib/modules/%s. That is undesireable, so we explicitly exclude them from traversal with a minor tweak to the traversal routine. Signed-off-by: Richard Yao Acked-by: Namhyung kim Link: http://lkml.kernel.org/r/1398532675-13684-1-git-send-email-ryao@gentoo.org Signed-off-by: Jiri Olsa --- tools/perf/util/machine.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index a53cd0b8c151..27c2a5efe450 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -717,7 +717,7 @@ static char *get_kernel_version(const char *root_dir) } static int map_groups__set_modules_path_dir(struct map_groups *mg, - const char *dir_name) + const char *dir_name, int depth) { struct dirent *dent; DIR *dir = opendir(dir_name); @@ -742,7 +742,15 @@ static int map_groups__set_modules_path_dir(struct map_groups *mg, !strcmp(dent->d_name, "..")) continue; - ret = map_groups__set_modules_path_dir(mg, path); + /* Do not follow top-level source and build symlinks */ + if (depth == 0) { + if (!strcmp(dent->d_name, "source") || + !strcmp(dent->d_name, "build")) + continue; + } + + ret = map_groups__set_modules_path_dir(mg, path, + depth + 1); if (ret < 0) goto out; } else { @@ -786,11 +794,11 @@ static int machine__set_modules_path(struct machine *machine) if (!version) return -1; - snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", + snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s", machine->root_dir, version); free(version); - return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); + return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0); } static int machine__create_module(void *arg, const char *name, u64 start) From 603940b6b8b1347ec13a628165c00194ebc17ed2 Mon Sep 17 00:00:00 2001 From: Xia Kaixu Date: Sat, 26 Apr 2014 15:55:12 +0800 Subject: [PATCH 514/623] perf tools: Remove extra '/' character in events file path The array debugfs_known_mountpoints[] will cause extra '/' character output. Remove it. pre: $ perf probe -l /sys/kernel/debug//tracing/uprobe_events file does not exist - please rebuild kernel with CONFIG_UPROBE_EVENTS. post: $ perf probe -l /sys/kernel/debug/tracing/uprobe_events file does not exist - please rebuild kernel with CONFIG_UPROBE_EVENTS. Signed-off-by: Xia Kaixu Acked-by: Namhyung Kim Link: http://lkml.kernel.org/r/535B6660.2060001@huawei.com Signed-off-by: Jiri Olsa --- tools/lib/api/fs/debugfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c index 7c4347962353..a74fba6d7743 100644 --- a/tools/lib/api/fs/debugfs.c +++ b/tools/lib/api/fs/debugfs.c @@ -12,8 +12,8 @@ char debugfs_mountpoint[PATH_MAX + 1] = "/sys/kernel/debug"; static const char * const debugfs_known_mountpoints[] = { - "/sys/kernel/debug/", - "/debug/", + "/sys/kernel/debug", + "/debug", 0, }; From 6392b4ebdc1acfbed605d68c437ff5597d0a8d95 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 27 Apr 2014 18:51:05 +0200 Subject: [PATCH 515/623] perf x86: Fix perf to use non-executable stack, again arch/x86/tests/regs_load.S is missing the linker note about the stack requirements, therefore making the linker fall back to an executable stack. As this object gets linked against the final perf binary, it'll needlessly end up with an executable stack. Fix this by adding the appropriate linker note. Also add a global linker flag to prevent future regressions, as suggested by Jiri. This way perf won't get an executable stack even if we fail to add the .GNU-stack linker note to future assembler files. Though, doing so might create regressions the other way around, when (statically) linking against libraries needing an executable stack. But, apparently, regressing in that direction is wanted as it is an indicator of poor code quality -- or just missing linker notes. Fixes: 3c8b06f981 ("perf tests x86: Introduce perf_regs_load function") Signed-off-by: Mathias Krause Acked-by: Ingo Molnar Cc: Arnaldo Carvalho de Melo Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1398617466-22749-1-git-send-email-minipli@googlemail.com Signed-off-by: Jiri Olsa --- tools/perf/arch/x86/tests/regs_load.S | 8 +++++++- tools/perf/config/Makefile | 4 ++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/tools/perf/arch/x86/tests/regs_load.S b/tools/perf/arch/x86/tests/regs_load.S index 99167bf644ea..60875d5c556c 100644 --- a/tools/perf/arch/x86/tests/regs_load.S +++ b/tools/perf/arch/x86/tests/regs_load.S @@ -1,4 +1,3 @@ - #include #define AX 0 @@ -90,3 +89,10 @@ ENTRY(perf_regs_load) ret ENDPROC(perf_regs_load) #endif + +/* + * We need to provide note.GNU-stack section, saying that we want + * NOT executable stack. Otherwise the final linking will assume that + * the ELF stack should not be restricted at all and set it RWX. + */ +.section .note.GNU-stack,"",@progbits diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index a57d59e7fe4b..802cf544202b 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -117,6 +117,10 @@ CFLAGS += -Wall CFLAGS += -Wextra CFLAGS += -std=gnu99 +# Enforce a non-executable stack, as we may regress (again) in the future by +# adding assembler files missing the .GNU-stack linker note. +LDFLAGS += -Wl,-z,noexecstack + EXTLIBS = -lelf -lpthread -lrt -lm -ldl ifneq ($(OUTPUT),) From 9a126728165eef9b1e9349fe57b9747ac6c6f7e3 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 30 Apr 2014 16:39:44 +0200 Subject: [PATCH 516/623] perf tests x86: Fix stack map lookup in dwarf unwind test Previous commit 'perf x86: Fix perf to use non-executable stack, again' moved stack map into MAP__VARIABLE map type again. Fixing the dwarf unwind test stack map lookup appropriately. Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Jean Pihet Link: http://lkml.kernel.org/n/tip-ttzyhbe4zls24z7ednkmhvxl@git.kernel.org Signed-off-by: Jiri Olsa --- tools/perf/arch/x86/tests/dwarf-unwind.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c index b8c0102c70c8..83bc2385e6d3 100644 --- a/tools/perf/arch/x86/tests/dwarf-unwind.c +++ b/tools/perf/arch/x86/tests/dwarf-unwind.c @@ -23,7 +23,7 @@ static int sample_ustack(struct perf_sample *sample, sp = (unsigned long) regs[PERF_REG_X86_SP]; - map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp); + map = map_groups__find(&thread->mg, MAP__VARIABLE, (u64) sp); if (!map) { pr_debug("failed to get stack map\n"); free(buf); From 8aa9e85adac609588eeec356e5a85059b3b819ba Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 30 Apr 2014 15:26:45 +0530 Subject: [PATCH 517/623] ARC: !PREEMPT: Ensure Return to kernel mode is IRQ safe There was a very small race window where resume to kernel mode from a Exception Path (or pure kernel mode which is true for most of ARC exceptions anyways), was not disabling interrupts in restore_regs, clobbering the exception regs Anton found the culprit call flow (after many sleepless nights) | 1. we got a Trap from user land | 2. started to service it. | 3. While doing some stuff on user-land memory (I think it is padzero()), | we got a DataTlbMiss | 4. On return from it we are taking "resume_kernel_mode" path | 5. NEED_RESHED is not set, so we go to "return from exception" path in | restore regs. | 6. there seems to be IRQ happening Signed-off-by: Vineet Gupta Cc: #3.10, 3.12, 3.13, 3.14 Cc: Anton Kolesov Cc: Francois Bedard Signed-off-by: Linus Torvalds --- arch/arc/kernel/entry.S | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 819dd5f7eb05..29b82adbf0b4 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -614,11 +614,13 @@ resume_user_mode_begin: resume_kernel_mode: -#ifdef CONFIG_PREEMPT - - ; This is a must for preempt_schedule_irq() + ; Disable Interrupts from this point on + ; CONFIG_PREEMPT: This is a must for preempt_schedule_irq() + ; !CONFIG_PREEMPT: To ensure restore_regs is intr safe IRQ_DISABLE r9 +#ifdef CONFIG_PREEMPT + ; Can't preempt if preemption disabled GET_CURR_THR_INFO_FROM_SP r10 ld r8, [r10, THREAD_INFO_PREEMPT_COUNT] From ae9c25a1826ca9602e89fe9c11700c63ce16d077 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 27 Apr 2014 16:37:39 +0200 Subject: [PATCH 518/623] ath9k_hw: do not lower ANI setting below default on AR913x When the amount of noise fluctuates strongly, low immunity settings can sometimes disrupt signal detection on AR913x chips. When that happens, no OFDM/CCK errors are reported anymore, and ANI tunes the radio to the lowest immunity settings. Usually rx/tx fails as well in that case. To fix this, keep noise immunity settings at or above ANI default level, which will keep radio parameters at or above INI values. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ani.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/ani.c b/drivers/net/wireless/ath/ath9k/ani.c index 6d47783f2e5b..ba502a2d199b 100644 --- a/drivers/net/wireless/ath/ath9k/ani.c +++ b/drivers/net/wireless/ath/ath9k/ani.c @@ -155,6 +155,9 @@ static void ath9k_hw_set_ofdm_nil(struct ath_hw *ah, u8 immunityLevel, ATH9K_ANI_RSSI_THR_LOW, ATH9K_ANI_RSSI_THR_HIGH); + if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_OFDM_DEF_LEVEL) + immunityLevel = ATH9K_ANI_OFDM_DEF_LEVEL; + if (!scan) aniState->ofdmNoiseImmunityLevel = immunityLevel; @@ -235,6 +238,9 @@ static void ath9k_hw_set_cck_nil(struct ath_hw *ah, u_int8_t immunityLevel, BEACON_RSSI(ah), ATH9K_ANI_RSSI_THR_LOW, ATH9K_ANI_RSSI_THR_HIGH); + if (AR_SREV_9100(ah) && immunityLevel < ATH9K_ANI_CCK_DEF_LEVEL) + immunityLevel = ATH9K_ANI_CCK_DEF_LEVEL; + if (ah->opmode == NL80211_IFTYPE_STATION && BEACON_RSSI(ah) <= ATH9K_ANI_RSSI_THR_LOW && immunityLevel > ATH9K_ANI_CCK_MAX_LEVEL_LOW_RSSI) From 62e54dbb599103ff461bb3fe6e32a3066da79754 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 28 Apr 2014 18:32:12 +0200 Subject: [PATCH 519/623] ath9k: remove tid->paused flag There are some corner cases where the driver could get stuck with a full tid queue that is paused, leading to a software tx queue hang. Since the tx queueing rework, pausing per-tid queues on aggregation session setup is no longer necessary. The driver will assign sequence numbers to buffered frames when a new session is established, in order to get the correct starting sequence number. mac80211 prevents new frames from entering the queue during setup. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ath9k.h | 1 - drivers/net/wireless/ath/ath9k/debug_sta.c | 5 ++--- drivers/net/wireless/ath/ath9k/xmit.c | 14 +------------- 3 files changed, 3 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 44d74495c4de..3ba03dde4215 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -251,7 +251,6 @@ struct ath_atx_tid { s8 bar_index; bool sched; - bool paused; bool active; }; diff --git a/drivers/net/wireless/ath/ath9k/debug_sta.c b/drivers/net/wireless/ath/ath9k/debug_sta.c index d76e6e0120d2..ffca918ff16a 100644 --- a/drivers/net/wireless/ath/ath9k/debug_sta.c +++ b/drivers/net/wireless/ath/ath9k/debug_sta.c @@ -72,7 +72,7 @@ static ssize_t read_file_node_aggr(struct file *file, char __user *user_buf, ath_txq_lock(sc, txq); if (tid->active) { len += scnprintf(buf + len, size - len, - "%3d%11d%10d%10d%10d%10d%9d%6d%8d\n", + "%3d%11d%10d%10d%10d%10d%9d%6d\n", tid->tidno, tid->seq_start, tid->seq_next, @@ -80,8 +80,7 @@ static ssize_t read_file_node_aggr(struct file *file, char __user *user_buf, tid->baw_head, tid->baw_tail, tid->bar_index, - tid->sched, - tid->paused); + tid->sched); } ath_txq_unlock(sc, txq); } diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 87cbec47fb48..66acb2cbd9df 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -107,9 +107,6 @@ static void ath_tx_queue_tid(struct ath_txq *txq, struct ath_atx_tid *tid) { struct ath_atx_ac *ac = tid->ac; - if (tid->paused) - return; - if (tid->sched) return; @@ -1407,7 +1404,6 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, ath_tx_tid_change_state(sc, txtid); txtid->active = true; - txtid->paused = true; *ssn = txtid->seq_start = txtid->seq_next; txtid->bar_index = -1; @@ -1427,7 +1423,6 @@ void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid) ath_txq_lock(sc, txq); txtid->active = false; - txtid->paused = false; ath_tx_flush_tid(sc, txtid); ath_tx_tid_change_state(sc, txtid); ath_txq_unlock_complete(sc, txq); @@ -1487,7 +1482,7 @@ void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an) ath_txq_lock(sc, txq); ac->clear_ps_filter = true; - if (!tid->paused && ath_tid_has_buffered(tid)) { + if (ath_tid_has_buffered(tid)) { ath_tx_queue_tid(txq, tid); ath_txq_schedule(sc, txq); } @@ -1510,7 +1505,6 @@ void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, ath_txq_lock(sc, txq); tid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor; - tid->paused = false; if (ath_tid_has_buffered(tid)) { ath_tx_queue_tid(txq, tid); @@ -1544,8 +1538,6 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw, continue; tid = ATH_AN_2_TID(an, i); - if (tid->paused) - continue; ath_txq_lock(sc, tid->ac->txq); while (nframes > 0) { @@ -1844,9 +1836,6 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) list_del(&tid->list); tid->sched = false; - if (tid->paused) - continue; - if (ath_tx_sched_aggr(sc, txq, tid, &stop)) sent = true; @@ -2698,7 +2687,6 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) tid->baw_size = WME_MAX_BA; tid->baw_head = tid->baw_tail = 0; tid->sched = false; - tid->paused = false; tid->active = false; __skb_queue_head_init(&tid->buf_q); __skb_queue_head_init(&tid->retry_q); From 5f9186990ec4579ee5b7a99b3254c29eda479f36 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Fri, 25 Apr 2014 10:05:43 -0500 Subject: [PATCH 520/623] rtlwifi: rtl8192se: Fix regression due to commit 1bf4bbb Beginning with kernel 3.13, this driver fails on some systems. The problem was bisected to: Commit 1bf4bbb4024dcdab5e57634dd8ae1072d42a53ac Author: Felix Fietkau Title: mac80211: send control port protocol frames to the VO queue There is noting wrong with the above commit. The regression occurs because V0 queue on RTL8192SE cards uses priority 6, not the usual 7. The fix is to modify the rtl8192se routine that sets the correct transmit queue. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=74541 Reported-by: Alex Miller Tested-by: Alex Miller Signed-off-by: Larry Finger Cc: Stable [3.13+] Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192se/trx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c index 36b48be8329c..2b3c78baa9f8 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192se/trx.c +++ b/drivers/net/wireless/rtlwifi/rtl8192se/trx.c @@ -49,6 +49,12 @@ static u8 _rtl92se_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 skb_queue) if (ieee80211_is_nullfunc(fc)) return QSLT_HIGH; + /* Kernel commit 1bf4bbb4024dcdab changed EAPOL packets to use + * queue V0 at priority 7; however, the RTL8192SE appears to have + * that queue at priority 6 + */ + if (skb->priority == 7) + return QSLT_VO; return skb->priority; } From 3234f5b06fc3094176a86772cc64baf3decc98fc Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sat, 26 Apr 2014 21:59:04 +0100 Subject: [PATCH 521/623] rtl8192cu: Fix unbalanced irq enable in error path of rtl92cu_hw_init() Fixes: a53268be0cb9 ('rtlwifi: rtl8192cu: Fix too long disable of IRQs') Cc: stable@vger.kernel.org Signed-off-by: Ben Hutchings Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192cu/hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c index 68b5c7e92cfb..07cb06da6729 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c @@ -1001,7 +1001,7 @@ int rtl92cu_hw_init(struct ieee80211_hw *hw) err = _rtl92cu_init_mac(hw); if (err) { RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "init mac failed!\n"); - return err; + goto exit; } err = rtl92c_download_fw(hw); if (err) { From 886c7c426d465732ec9d1b2bbdda5642fc2e7e05 Mon Sep 17 00:00:00 2001 From: Jean-Jacques Hiblot Date: Wed, 12 Mar 2014 17:30:08 +0100 Subject: [PATCH 522/623] usb: gadget: at91-udc: fix irq and iomem resource retrieval When using dt resources retrieval (interrupts and reg properties) there is no predefined order for these resources in the platform dev resource table. Also don't expect the number of resource to be always 2. Signed-off-by: Jean-Jacques Hiblot Acked-by: Boris BREZILLON Acked-by: Nicolas Ferre Cc: stable # 3.4 Signed-off-by: Felipe Balbi --- drivers/usb/gadget/at91_udc.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index f605ad8c1902..cfd18bcca723 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1709,16 +1709,6 @@ static int at91udc_probe(struct platform_device *pdev) return -ENODEV; } - if (pdev->num_resources != 2) { - DBG("invalid num_resources\n"); - return -ENODEV; - } - if ((pdev->resource[0].flags != IORESOURCE_MEM) - || (pdev->resource[1].flags != IORESOURCE_IRQ)) { - DBG("invalid resource type\n"); - return -ENODEV; - } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) return -ENXIO; From 8c836fa85bebfea26ceff024b5d1c518bf63f3d8 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 30 Apr 2014 13:28:17 -0400 Subject: [PATCH 523/623] MAINTAINERS: email address change for Jeff Layton jlayton@redhat.com -> jlayton@poochiereds.net Signed-off-by: Jeff Layton --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index ea44a57f790e..37a36aa94177 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3556,7 +3556,7 @@ F: include/scsi/libfcoe.h F: include/uapi/scsi/fc/ FILE LOCKING (flock() and fcntl()/lockf()) -M: Jeff Layton +M: Jeff Layton M: J. Bruce Fields L: linux-fsdevel@vger.kernel.org S: Maintained From 1b4448815ee746f878ca4c6b8fffa23441f6d16c Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Mon, 28 Apr 2014 23:23:01 +0200 Subject: [PATCH 524/623] Altera TSE: Fix DMA secriptor length initialization sgdma_descrip is a function name as well as the name of a struct. In sgdma_initialize(), we should initialize the descriptor length field with the actual length of a descriptor not with the size of the function. In order to prevent such things from happening in the future, rename the function to sgdma_setup_descrip(). Found by sparse which yields the following warning: drivers/net/ethernet/altera/altera_sgdma.c:74:30: warning: expression using sizeof on a function Signed-off-by: Tobias Klauser Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_sgdma.c | 74 +++++++++++----------- 1 file changed, 37 insertions(+), 37 deletions(-) diff --git a/drivers/net/ethernet/altera/altera_sgdma.c b/drivers/net/ethernet/altera/altera_sgdma.c index 4bcdd34f5d24..9ce8630692b6 100644 --- a/drivers/net/ethernet/altera/altera_sgdma.c +++ b/drivers/net/ethernet/altera/altera_sgdma.c @@ -20,15 +20,15 @@ #include "altera_sgdmahw.h" #include "altera_sgdma.h" -static void sgdma_descrip(struct sgdma_descrip *desc, - struct sgdma_descrip *ndesc, - dma_addr_t ndesc_phys, - dma_addr_t raddr, - dma_addr_t waddr, - u16 length, - int generate_eop, - int rfixed, - int wfixed); +static void sgdma_setup_descrip(struct sgdma_descrip *desc, + struct sgdma_descrip *ndesc, + dma_addr_t ndesc_phys, + dma_addr_t raddr, + dma_addr_t waddr, + u16 length, + int generate_eop, + int rfixed, + int wfixed); static int sgdma_async_write(struct altera_tse_private *priv, struct sgdma_descrip *desc); @@ -71,7 +71,7 @@ int sgdma_initialize(struct altera_tse_private *priv) SGDMA_CTRLREG_INTEN | SGDMA_CTRLREG_ILASTD; - priv->sgdmadesclen = sizeof(sgdma_descrip); + priv->sgdmadesclen = sizeof(struct sgdma_descrip); INIT_LIST_HEAD(&priv->txlisthd); INIT_LIST_HEAD(&priv->rxlisthd); @@ -195,15 +195,15 @@ int sgdma_tx_buffer(struct altera_tse_private *priv, struct tse_buffer *buffer) if (sgdma_txbusy(priv)) return 0; - sgdma_descrip(cdesc, /* current descriptor */ - ndesc, /* next descriptor */ - sgdma_txphysaddr(priv, ndesc), - buffer->dma_addr, /* address of packet to xmit */ - 0, /* write addr 0 for tx dma */ - buffer->len, /* length of packet */ - SGDMA_CONTROL_EOP, /* Generate EOP */ - 0, /* read fixed */ - SGDMA_CONTROL_WR_FIXED); /* Generate SOP */ + sgdma_setup_descrip(cdesc, /* current descriptor */ + ndesc, /* next descriptor */ + sgdma_txphysaddr(priv, ndesc), + buffer->dma_addr, /* address of packet to xmit */ + 0, /* write addr 0 for tx dma */ + buffer->len, /* length of packet */ + SGDMA_CONTROL_EOP, /* Generate EOP */ + 0, /* read fixed */ + SGDMA_CONTROL_WR_FIXED); /* Generate SOP */ pktstx = sgdma_async_write(priv, cdesc); @@ -309,15 +309,15 @@ u32 sgdma_rx_status(struct altera_tse_private *priv) /* Private functions */ -static void sgdma_descrip(struct sgdma_descrip *desc, - struct sgdma_descrip *ndesc, - dma_addr_t ndesc_phys, - dma_addr_t raddr, - dma_addr_t waddr, - u16 length, - int generate_eop, - int rfixed, - int wfixed) +static void sgdma_setup_descrip(struct sgdma_descrip *desc, + struct sgdma_descrip *ndesc, + dma_addr_t ndesc_phys, + dma_addr_t raddr, + dma_addr_t waddr, + u16 length, + int generate_eop, + int rfixed, + int wfixed) { /* Clear the next descriptor as not owned by hardware */ u32 ctrl = ndesc->control; @@ -367,15 +367,15 @@ static int sgdma_async_read(struct altera_tse_private *priv) return 0; } - sgdma_descrip(cdesc, /* current descriptor */ - ndesc, /* next descriptor */ - sgdma_rxphysaddr(priv, ndesc), - 0, /* read addr 0 for rx dma */ - rxbuffer->dma_addr, /* write addr for rx dma */ - 0, /* read 'til EOP */ - 0, /* EOP: NA for rx dma */ - 0, /* read fixed: NA for rx dma */ - 0); /* SOP: NA for rx DMA */ + sgdma_setup_descrip(cdesc, /* current descriptor */ + ndesc, /* next descriptor */ + sgdma_rxphysaddr(priv, ndesc), + 0, /* read addr 0 for rx dma */ + rxbuffer->dma_addr, /* write addr for rx dma */ + 0, /* read 'til EOP */ + 0, /* EOP: NA for rx dma */ + 0, /* read fixed: NA for rx dma */ + 0); /* SOP: NA for rx DMA */ dma_sync_single_for_device(priv->device, priv->rxdescphys, From 652f99ead8319941216c64d7f92c8dcdc9b95970 Mon Sep 17 00:00:00 2001 From: Tobias Klauser Date: Mon, 28 Apr 2014 23:23:13 +0200 Subject: [PATCH 525/623] Altera TSE: Add missing include to silence sparse warnings This fixes the following sparse warnings: drivers/net/ethernet/altera/altera_msgdma.c:23:5: warning: symbol 'msgdma_initialize' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:28:6: warning: symbol 'msgdma_uninitialize' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:32:6: warning: symbol 'msgdma_reset' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:77:6: warning: symbol 'msgdma_disable_rxirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:83:6: warning: symbol 'msgdma_enable_rxirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:89:6: warning: symbol 'msgdma_disable_txirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:95:6: warning: symbol 'msgdma_enable_txirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:101:6: warning: symbol 'msgdma_clear_rxirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:107:6: warning: symbol 'msgdma_clear_txirq' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:114:5: warning: symbol 'msgdma_tx_buffer' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:129:5: warning: symbol 'msgdma_tx_completions' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:154:5: warning: symbol 'msgdma_add_rx_desc' was not declared. Should it be static? drivers/net/ethernet/altera/altera_msgdma.c:181:5: warning: symbol 'msgdma_rx_status' was not declared. Should it be static? Signed-off-by: Tobias Klauser Acked-by: Vince Bridgers Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/altera_msgdma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/altera/altera_msgdma.c b/drivers/net/ethernet/altera/altera_msgdma.c index 219a8a1e7ba0..4d1f2fdd5c32 100644 --- a/drivers/net/ethernet/altera/altera_msgdma.c +++ b/drivers/net/ethernet/altera/altera_msgdma.c @@ -18,6 +18,7 @@ #include "altera_utils.h" #include "altera_tse.h" #include "altera_msgdmahw.h" +#include "altera_msgdma.h" /* No initialization work to do for MSGDMA */ int msgdma_initialize(struct altera_tse_private *priv) From d2e752db6d05374a35dddb2e17864fe310fbcf69 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 28 Apr 2014 17:36:20 -0700 Subject: [PATCH 526/623] cxgb4: Decode PCIe Gen3 link speed Add handling for " 8 GT/s" in print_port_info(). Signed-off-by: Roland Dreier Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 6fe58913403a..24e16e3301e0 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -5870,6 +5870,8 @@ static void print_port_info(const struct net_device *dev) spd = " 2.5 GT/s"; else if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_5_0GB) spd = " 5 GT/s"; + else if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_8_0GB) + spd = " 8 GT/s"; if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100M) bufp += sprintf(bufp, "100/"); From 0a0347b1e65d0757024d9db0ffdeafb41a9d14f4 Mon Sep 17 00:00:00 2001 From: Byungho An Date: Tue, 29 Apr 2014 13:15:15 +0900 Subject: [PATCH 527/623] net: sxgbe: sw reset moved to probe function This patch moves sw reset to probe function because sw reset is needed early stage before open function. Signed-off-by: Byungho An Signed-off-by: David S. Miller --- .../net/ethernet/samsung/sxgbe/sxgbe_dma.c | 13 ----------- .../net/ethernet/samsung/sxgbe/sxgbe_main.c | 22 +++++++++++++++++++ 2 files changed, 22 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c index 4d989ff6c978..bb9b5b8afc5f 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c @@ -23,21 +23,8 @@ /* DMA core initialization */ static int sxgbe_dma_init(void __iomem *ioaddr, int fix_burst, int burst_map) { - int retry_count = 10; u32 reg_val; - /* reset the DMA */ - writel(SXGBE_DMA_SOFT_RESET, ioaddr + SXGBE_DMA_MODE_REG); - while (retry_count--) { - if (!(readl(ioaddr + SXGBE_DMA_MODE_REG) & - SXGBE_DMA_SOFT_RESET)) - break; - mdelay(10); - } - - if (retry_count < 0) - return -EBUSY; - reg_val = readl(ioaddr + SXGBE_DMA_SYSBUS_MODE_REG); /* if fix_burst = 0, Set UNDEF = 1 of DMA_Sys_Mode Register. diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index 27e8c824b204..6ad7b3aaaada 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -2070,6 +2070,24 @@ static int sxgbe_hw_init(struct sxgbe_priv_data * const priv) return 0; } +static int sxgbe_sw_reset(void __iomem *addr) +{ + int retry_count = 10; + + writel(SXGBE_DMA_SOFT_RESET, addr + SXGBE_DMA_MODE_REG); + while (retry_count--) { + if (!(readl(addr + SXGBE_DMA_MODE_REG) & + SXGBE_DMA_SOFT_RESET)) + break; + mdelay(10); + } + + if (retry_count < 0) + return -EBUSY; + + return 0; +} + /** * sxgbe_drv_probe * @device: device pointer @@ -2102,6 +2120,10 @@ struct sxgbe_priv_data *sxgbe_drv_probe(struct device *device, priv->plat = plat_dat; priv->ioaddr = addr; + ret = sxgbe_sw_reset(priv->ioaddr); + if (ret) + goto error_free_netdev; + /* Verify driver arguments */ sxgbe_verify_args(); From 325b94f7e63080f3e371e35f063a8be138c1873b Mon Sep 17 00:00:00 2001 From: Byungho An Date: Tue, 29 Apr 2014 13:15:17 +0900 Subject: [PATCH 528/623] net: sxgbe: Added rxqueue enable function This patch adds rxqueue enable function according to number of rxqueue and adds rxqueue disable function for removing. Signed-off-by: Byungho An Signed-off-by: David S. Miller --- .../net/ethernet/samsung/sxgbe/sxgbe_common.h | 2 ++ .../net/ethernet/samsung/sxgbe/sxgbe_core.c | 22 +++++++++++++++++++ .../net/ethernet/samsung/sxgbe/sxgbe_main.c | 8 +++++++ .../net/ethernet/samsung/sxgbe/sxgbe_reg.h | 4 ++++ 4 files changed, 36 insertions(+) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h b/drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h index 6203c7d8550f..45019649bbbd 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h @@ -358,6 +358,8 @@ struct sxgbe_core_ops { /* Enable disable checksum offload operations */ void (*enable_rx_csum)(void __iomem *ioaddr); void (*disable_rx_csum)(void __iomem *ioaddr); + void (*enable_rxqueue)(void __iomem *ioaddr, int queue_num); + void (*disable_rxqueue)(void __iomem *ioaddr, int queue_num); }; const struct sxgbe_core_ops *sxgbe_get_core_ops(void); diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c index c4da7a2b002a..58c35692560e 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c @@ -165,6 +165,26 @@ static void sxgbe_core_set_speed(void __iomem *ioaddr, unsigned char speed) writel(tx_cfg, ioaddr + SXGBE_CORE_TX_CONFIG_REG); } +static void sxgbe_core_enable_rxqueue(void __iomem *ioaddr, int queue_num) +{ + u32 reg_val; + + reg_val = readl(ioaddr + SXGBE_CORE_RX_CTL0_REG); + reg_val &= ~(SXGBE_CORE_RXQ_ENABLE_MASK << queue_num); + reg_val |= SXGBE_CORE_RXQ_ENABLE; + writel(reg_val, ioaddr + SXGBE_CORE_RX_CTL0_REG); +} + +static void sxgbe_core_disable_rxqueue(void __iomem *ioaddr, int queue_num) +{ + u32 reg_val; + + reg_val = readl(ioaddr + SXGBE_CORE_RX_CTL0_REG); + reg_val &= ~(SXGBE_CORE_RXQ_ENABLE_MASK << queue_num); + reg_val |= SXGBE_CORE_RXQ_DISABLE; + writel(reg_val, ioaddr + SXGBE_CORE_RX_CTL0_REG); +} + static void sxgbe_set_eee_mode(void __iomem *ioaddr) { u32 ctrl; @@ -254,6 +274,8 @@ static const struct sxgbe_core_ops core_ops = { .set_eee_pls = sxgbe_set_eee_pls, .enable_rx_csum = sxgbe_enable_rx_csum, .disable_rx_csum = sxgbe_disable_rx_csum, + .enable_rxqueue = sxgbe_core_enable_rxqueue, + .disable_rxqueue = sxgbe_core_disable_rxqueue, }; const struct sxgbe_core_ops *sxgbe_get_core_ops(void) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index 6ad7b3aaaada..fd5c428411eb 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1076,6 +1076,9 @@ static int sxgbe_open(struct net_device *dev) /* Initialize the MAC Core */ priv->hw->mac->core_init(priv->ioaddr); + SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) { + priv->hw->mac->enable_rxqueue(priv->ioaddr, queue_num); + } /* Request the IRQ lines */ ret = devm_request_irq(priv->device, priv->irq, sxgbe_common_interrupt, @@ -2240,9 +2243,14 @@ error_free_netdev: int sxgbe_drv_remove(struct net_device *ndev) { struct sxgbe_priv_data *priv = netdev_priv(ndev); + u8 queue_num; netdev_info(ndev, "%s: removing driver\n", __func__); + SXGBE_FOR_EACH_QUEUE(SXGBE_RX_QUEUES, queue_num) { + priv->hw->mac->disable_rxqueue(priv->ioaddr, queue_num); + } + priv->hw->dma->stop_rx(priv->ioaddr, SXGBE_RX_QUEUES); priv->hw->dma->stop_tx(priv->ioaddr, SXGBE_TX_QUEUES); diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h b/drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h index 5a89acb4c505..56f8bf5a3f1b 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h @@ -52,6 +52,10 @@ #define SXGBE_CORE_RX_CTL2_REG 0x00A8 #define SXGBE_CORE_RX_CTL3_REG 0x00AC +#define SXGBE_CORE_RXQ_ENABLE_MASK 0x0003 +#define SXGBE_CORE_RXQ_ENABLE 0x0002 +#define SXGBE_CORE_RXQ_DISABLE 0x0000 + /* Interrupt Registers */ #define SXGBE_CORE_INT_STATUS_REG 0x00B0 #define SXGBE_CORE_INT_ENABLE_REG 0x00B4 From 3dc638d13aced7baad40517a3d70b3b43bf6b90f Mon Sep 17 00:00:00 2001 From: Byungho An Date: Tue, 29 Apr 2014 13:15:27 +0900 Subject: [PATCH 529/623] net: sxgbe: Added set function for interrupt on complete This patch adds set_rx_int_on_com function for interrupt when dma is completed. Signed-off-by: Byungho An Signed-off-by: David S. Miller --- drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c | 7 +++++++ drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h | 3 +++ drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 1 + 3 files changed, 11 insertions(+) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c index d71691be4136..2686bb5b6765 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.c @@ -233,6 +233,12 @@ static void sxgbe_set_rx_owner(struct sxgbe_rx_norm_desc *p) p->rdes23.rx_rd_des23.own_bit = 1; } +/* Set Interrupt on completion bit */ +static void sxgbe_set_rx_int_on_com(struct sxgbe_rx_norm_desc *p) +{ + p->rdes23.rx_rd_des23.int_on_com = 1; +} + /* Get the receive frame size */ static int sxgbe_get_rx_frame_len(struct sxgbe_rx_norm_desc *p) { @@ -498,6 +504,7 @@ static const struct sxgbe_desc_ops desc_ops = { .init_rx_desc = sxgbe_init_rx_desc, .get_rx_owner = sxgbe_get_rx_owner, .set_rx_owner = sxgbe_set_rx_owner, + .set_rx_int_on_com = sxgbe_set_rx_int_on_com, .get_rx_frame_len = sxgbe_get_rx_frame_len, .get_rx_fd_status = sxgbe_get_rx_fd_status, .get_rx_ld_status = sxgbe_get_rx_ld_status, diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h index 022630098aea..18609324db72 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h @@ -258,6 +258,9 @@ struct sxgbe_desc_ops { /* Set own bit */ void (*set_rx_owner)(struct sxgbe_rx_norm_desc *p); + /* Set Interrupt on completion bit */ + void (*set_rx_int_on_com)(struct sxgbe_rx_norm_desc *p); + /* Get the receive frame size */ int (*get_rx_frame_len)(struct sxgbe_rx_norm_desc *p); diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index fd5c428411eb..82a9a983869f 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1456,6 +1456,7 @@ static void sxgbe_rx_refill(struct sxgbe_priv_data *priv) /* Added memory barrier for RX descriptor modification */ wmb(); priv->hw->desc->set_rx_owner(p); + priv->hw->desc->set_rx_int_on_com(p); /* Added memory barrier for RX descriptor modification */ wmb(); } From fc9f35010641ea85dd19d144b86cdd93156f1a1e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 28 Apr 2014 22:00:29 -0700 Subject: [PATCH 530/623] tcp: increment retransmit counters in tlp and fast open Both TLP and Fast Open call __tcp_retransmit_skb() instead of tcp_retransmit_skb() to avoid changing tp->retrans_out. This has the side effect of missing SNMP counters increments as well as tcp_info tcpi_total_retrans updates. Fix this by moving the stats increments of into __tcp_retransmit_skb() Signed-off-by: Eric Dumazet Acked-by: Nandita Dukkipati Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 025e25093984..12d6016bdd9a 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2441,8 +2441,14 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb) err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC); } - if (likely(!err)) + if (likely(!err)) { TCP_SKB_CB(skb)->sacked |= TCPCB_EVER_RETRANS; + /* Update global TCP statistics. */ + TCP_INC_STATS(sock_net(sk), TCP_MIB_RETRANSSEGS); + if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN) + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS); + tp->total_retrans++; + } return err; } @@ -2452,12 +2458,6 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb) int err = __tcp_retransmit_skb(sk, skb); if (err == 0) { - /* Update global TCP statistics. */ - TCP_INC_STATS(sock_net(sk), TCP_MIB_RETRANSSEGS); - if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN) - NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS); - tp->total_retrans++; - #if FASTRETRANS_DEBUG > 0 if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS) { net_dbg_ratelimited("retrans_out leaked\n"); From cbdb04279ccaefcc702c8757757eea8ed76e50cf Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Tue, 29 Apr 2014 10:09:50 -0400 Subject: [PATCH 531/623] mactap: Fix checksum errors for non-gso packets in bridge mode The following is a problematic configuration: VM1: virtio-net device connected to macvtap0@eth0 VM2: e1000 device connect to macvtap1@eth0 The problem is is that virtio-net supports checksum offloading and thus sends the packets to the host with CHECKSUM_PARTIAL set. On the other hand, e1000 does not support any acceleration. For small TCP packets (and this includes the 3-way handshake), e1000 ends up receiving packets that only have a partial checksum set. This causes TCP to fail checksum validation and to drop packets. As a result tcp connections can not be established. Commit 3e4f8b787370978733ca6cae452720a4f0c296b8 macvtap: Perform GSO on forwarding path. fixes this issue for large packets wthat will end up undergoing GSO. This commit adds a check for the non-GSO case and attempts to compute the checksum for partially checksummed packets in the non-GSO case. CC: Daniel Lezcano CC: Patrick McHardy CC: Andrian Nord CC: Eric Dumazet CC: Michael S. Tsirkin CC: Jason Wang Signed-off-by: Vlad Yasevich Acked-by: Jason Wang Signed-off-by: David S. Miller --- drivers/net/macvtap.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index ff111a89e17f..3381c4f91a8c 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -322,6 +322,15 @@ static rx_handler_result_t macvtap_handle_frame(struct sk_buff **pskb) segs = nskb; } } else { + /* If we receive a partial checksum and the tap side + * doesn't support checksum offload, compute the checksum. + * Note: it doesn't matter which checksum feature to + * check, we either support them all or none. + */ + if (skb->ip_summed == CHECKSUM_PARTIAL && + !(features & NETIF_F_ALL_CSUM) && + skb_checksum_help(skb)) + goto drop; skb_queue_tail(&q->sk.sk_receive_queue, skb); } From f114890cdf84d753f6b41cd0cc44ba51d16313da Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Tue, 29 Apr 2014 10:09:51 -0400 Subject: [PATCH 532/623] Revert "macvlan : fix checksums error when we are in bridge mode" This reverts commit 12a2856b604476c27d85a5f9a57ae1661fc46019. The commit above doesn't appear to be necessary any more as the checksums appear to be correctly computed/validated. Additionally the above commit breaks kvm configurations where one VM is using a device that support checksum offload (virtio) and the other VM does not. In this case, packets leaving virtio device will have CHECKSUM_PARTIAL set. The packets is forwarded to a macvtap that has offload features turned off. Since we use CHECKSUM_UNNECESSARY, the host does does not update the checksum and thus a bad checksum is passed up to the guest. CC: Daniel Lezcano CC: Patrick McHardy CC: Andrian Nord CC: Eric Dumazet CC: Michael S. Tsirkin CC: Jason Wang Signed-off-by: Vlad Yasevich Acked-by: Michael S. Tsirkin Acked-by: Jason Wang Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 753a8c23d15d..b0e2865a6810 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -263,11 +263,9 @@ static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) const struct macvlan_dev *vlan = netdev_priv(dev); const struct macvlan_port *port = vlan->port; const struct macvlan_dev *dest; - __u8 ip_summed = skb->ip_summed; if (vlan->mode == MACVLAN_MODE_BRIDGE) { const struct ethhdr *eth = (void *)skb->data; - skb->ip_summed = CHECKSUM_UNNECESSARY; /* send to other bridge ports directly */ if (is_multicast_ether_addr(eth->h_dest)) { @@ -285,7 +283,6 @@ static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) } xmit_world: - skb->ip_summed = ip_summed; skb->dev = vlan->lowerdev; return dev_queue_xmit(skb); } From e5744fe9d262d11131916d04ea79ea539fe296c0 Mon Sep 17 00:00:00 2001 From: Brendan Hickey Date: Wed, 30 Apr 2014 10:24:38 +0200 Subject: [PATCH 533/623] bpf_dbg: fix wrong register usage The AND instruction is erroneously using the X register instead of the K register. Signed-off-by: Brendan Hickey Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller --- tools/net/bpf_dbg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/net/bpf_dbg.c b/tools/net/bpf_dbg.c index bb31813e43dd..9a287bec695a 100644 --- a/tools/net/bpf_dbg.c +++ b/tools/net/bpf_dbg.c @@ -820,7 +820,7 @@ do_div: r->A &= r->X; break; case BPF_ALU_AND | BPF_K: - r->A &= r->X; + r->A &= K; break; case BPF_ALU_OR | BPF_X: r->A |= r->X; From 0cda345d1b2201dd15591b163e3c92bad5191745 Mon Sep 17 00:00:00 2001 From: Liu Yu Date: Wed, 30 Apr 2014 17:34:09 +0800 Subject: [PATCH 534/623] tcp_cubic: fix the range of delayed_ack commit b9f47a3aaeab (tcp_cubic: limit delayed_ack ratio to prevent divide error) try to prevent divide error, but there is still a little chance that delayed_ack can reach zero. In case the param cnt get negative value, then ratio+cnt would overflow and may happen to be zero. As a result, min(ratio, ACK_RATIO_LIMIT) will calculate to be zero. In some old kernels, such as 2.6.32, there is a bug that would pass negative param, which then ultimately leads to this divide error. commit 5b35e1e6e9c (tcp: fix tcp_trim_head() to adjust segment count with skb MSS) fixed the negative param issue. However, it's safe that we fix the range of delayed_ack as well, to make sure we do not hit a divide by zero. CC: Stephen Hemminger Signed-off-by: Liu Yu Signed-off-by: Eric Dumazet Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_cubic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index 8bf224516ba2..b4f1b29b08bd 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -409,7 +409,7 @@ static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt_us) ratio -= ca->delayed_ack >> ACK_RATIO_SHIFT; ratio += cnt; - ca->delayed_ack = min(ratio, ACK_RATIO_LIMIT); + ca->delayed_ack = clamp(ratio, 1U, ACK_RATIO_LIMIT); } /* Some calls are for duplicates without timetamps */ From 6ce29b0e2a04ea85617cd21099af67449a76f589 Mon Sep 17 00:00:00 2001 From: Claudiu Manoil Date: Wed, 30 Apr 2014 14:27:21 +0300 Subject: [PATCH 535/623] gianfar: Avoid unnecessary reg accesses in adjust_link() For phy devices that don't issue interrupts upon link state changes, phylib polls the link state resulting in repeated calls to adjust_link(), even if the link state didn't change. As a result, some mac registers are repeatedly read and written with the same values, which is not ok. To fix this, adjust_link() has been refactored to check first whether the link state has changed and to take action only if needed, updating mac registers and local state variables. The 'new_state' local flag, set if one of the link params changed (link, speed or duplex), has been rendered useless and removed by this refactoring. Signed-off-by: Claudiu Manoil Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/gianfar.c | 223 ++++++++++++----------- 1 file changed, 113 insertions(+), 110 deletions(-) diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 9125d9abf099..e2d42475b006 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -121,6 +121,7 @@ static irqreturn_t gfar_error(int irq, void *dev_id); static irqreturn_t gfar_transmit(int irq, void *dev_id); static irqreturn_t gfar_interrupt(int irq, void *dev_id); static void adjust_link(struct net_device *dev); +static noinline void gfar_update_link_state(struct gfar_private *priv); static int init_phy(struct net_device *dev); static int gfar_probe(struct platform_device *ofdev); static int gfar_remove(struct platform_device *ofdev); @@ -3076,41 +3077,6 @@ static irqreturn_t gfar_interrupt(int irq, void *grp_id) return IRQ_HANDLED; } -static u32 gfar_get_flowctrl_cfg(struct gfar_private *priv) -{ - struct phy_device *phydev = priv->phydev; - u32 val = 0; - - if (!phydev->duplex) - return val; - - if (!priv->pause_aneg_en) { - if (priv->tx_pause_en) - val |= MACCFG1_TX_FLOW; - if (priv->rx_pause_en) - val |= MACCFG1_RX_FLOW; - } else { - u16 lcl_adv, rmt_adv; - u8 flowctrl; - /* get link partner capabilities */ - rmt_adv = 0; - if (phydev->pause) - rmt_adv = LPA_PAUSE_CAP; - if (phydev->asym_pause) - rmt_adv |= LPA_PAUSE_ASYM; - - lcl_adv = mii_advertise_flowctrl(phydev->advertising); - - flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); - if (flowctrl & FLOW_CTRL_TX) - val |= MACCFG1_TX_FLOW; - if (flowctrl & FLOW_CTRL_RX) - val |= MACCFG1_RX_FLOW; - } - - return val; -} - /* Called every time the controller might need to be made * aware of new link state. The PHY code conveys this * information through variables in the phydev structure, and this @@ -3120,83 +3086,12 @@ static u32 gfar_get_flowctrl_cfg(struct gfar_private *priv) static void adjust_link(struct net_device *dev) { struct gfar_private *priv = netdev_priv(dev); - struct gfar __iomem *regs = priv->gfargrp[0].regs; struct phy_device *phydev = priv->phydev; - int new_state = 0; - if (test_bit(GFAR_RESETTING, &priv->state)) - return; - - if (phydev->link) { - u32 tempval1 = gfar_read(®s->maccfg1); - u32 tempval = gfar_read(®s->maccfg2); - u32 ecntrl = gfar_read(®s->ecntrl); - - /* Now we make sure that we can be in full duplex mode. - * If not, we operate in half-duplex mode. - */ - if (phydev->duplex != priv->oldduplex) { - new_state = 1; - if (!(phydev->duplex)) - tempval &= ~(MACCFG2_FULL_DUPLEX); - else - tempval |= MACCFG2_FULL_DUPLEX; - - priv->oldduplex = phydev->duplex; - } - - if (phydev->speed != priv->oldspeed) { - new_state = 1; - switch (phydev->speed) { - case 1000: - tempval = - ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII); - - ecntrl &= ~(ECNTRL_R100); - break; - case 100: - case 10: - tempval = - ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII); - - /* Reduced mode distinguishes - * between 10 and 100 - */ - if (phydev->speed == SPEED_100) - ecntrl |= ECNTRL_R100; - else - ecntrl &= ~(ECNTRL_R100); - break; - default: - netif_warn(priv, link, dev, - "Ack! Speed (%d) is not 10/100/1000!\n", - phydev->speed); - break; - } - - priv->oldspeed = phydev->speed; - } - - tempval1 &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); - tempval1 |= gfar_get_flowctrl_cfg(priv); - - gfar_write(®s->maccfg1, tempval1); - gfar_write(®s->maccfg2, tempval); - gfar_write(®s->ecntrl, ecntrl); - - if (!priv->oldlink) { - new_state = 1; - priv->oldlink = 1; - } - } else if (priv->oldlink) { - new_state = 1; - priv->oldlink = 0; - priv->oldspeed = 0; - priv->oldduplex = -1; - } - - if (new_state && netif_msg_link(priv)) - phy_print_status(phydev); + if (unlikely(phydev->link != priv->oldlink || + phydev->duplex != priv->oldduplex || + phydev->speed != priv->oldspeed)) + gfar_update_link_state(priv); } /* Update the hash table based on the current list of multicast @@ -3442,6 +3337,114 @@ static irqreturn_t gfar_error(int irq, void *grp_id) return IRQ_HANDLED; } +static u32 gfar_get_flowctrl_cfg(struct gfar_private *priv) +{ + struct phy_device *phydev = priv->phydev; + u32 val = 0; + + if (!phydev->duplex) + return val; + + if (!priv->pause_aneg_en) { + if (priv->tx_pause_en) + val |= MACCFG1_TX_FLOW; + if (priv->rx_pause_en) + val |= MACCFG1_RX_FLOW; + } else { + u16 lcl_adv, rmt_adv; + u8 flowctrl; + /* get link partner capabilities */ + rmt_adv = 0; + if (phydev->pause) + rmt_adv = LPA_PAUSE_CAP; + if (phydev->asym_pause) + rmt_adv |= LPA_PAUSE_ASYM; + + lcl_adv = mii_advertise_flowctrl(phydev->advertising); + + flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); + if (flowctrl & FLOW_CTRL_TX) + val |= MACCFG1_TX_FLOW; + if (flowctrl & FLOW_CTRL_RX) + val |= MACCFG1_RX_FLOW; + } + + return val; +} + +static noinline void gfar_update_link_state(struct gfar_private *priv) +{ + struct gfar __iomem *regs = priv->gfargrp[0].regs; + struct phy_device *phydev = priv->phydev; + + if (unlikely(test_bit(GFAR_RESETTING, &priv->state))) + return; + + if (phydev->link) { + u32 tempval1 = gfar_read(®s->maccfg1); + u32 tempval = gfar_read(®s->maccfg2); + u32 ecntrl = gfar_read(®s->ecntrl); + + if (phydev->duplex != priv->oldduplex) { + if (!(phydev->duplex)) + tempval &= ~(MACCFG2_FULL_DUPLEX); + else + tempval |= MACCFG2_FULL_DUPLEX; + + priv->oldduplex = phydev->duplex; + } + + if (phydev->speed != priv->oldspeed) { + switch (phydev->speed) { + case 1000: + tempval = + ((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII); + + ecntrl &= ~(ECNTRL_R100); + break; + case 100: + case 10: + tempval = + ((tempval & ~(MACCFG2_IF)) | MACCFG2_MII); + + /* Reduced mode distinguishes + * between 10 and 100 + */ + if (phydev->speed == SPEED_100) + ecntrl |= ECNTRL_R100; + else + ecntrl &= ~(ECNTRL_R100); + break; + default: + netif_warn(priv, link, priv->ndev, + "Ack! Speed (%d) is not 10/100/1000!\n", + phydev->speed); + break; + } + + priv->oldspeed = phydev->speed; + } + + tempval1 &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW); + tempval1 |= gfar_get_flowctrl_cfg(priv); + + gfar_write(®s->maccfg1, tempval1); + gfar_write(®s->maccfg2, tempval); + gfar_write(®s->ecntrl, ecntrl); + + if (!priv->oldlink) + priv->oldlink = 1; + + } else if (priv->oldlink) { + priv->oldlink = 0; + priv->oldspeed = 0; + priv->oldduplex = -1; + } + + if (netif_msg_link(priv)) + phy_print_status(phydev); +} + static struct of_device_id gfar_match[] = { { From 22041fb05b66387b2854f789d1e1f55c7d07b4f4 Mon Sep 17 00:00:00 2001 From: KY Srinivasan Date: Wed, 30 Apr 2014 11:58:25 -0700 Subject: [PATCH 536/623] hyperv: Properly handle checksum offload Do checksum offload only if the client of the driver wants checksum to be offloaded. In V1 version of this patch, I addressed comments from Stephen Hemminger and Eric Dumazet . In this version of the patch I have addressed comments from David Miller. This patch fixes a bug that is exposed in gateway scenarios. Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc_drv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 31e55fba7cad..7918d5132c1f 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -382,6 +382,10 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) if (skb_is_gso(skb)) goto do_lso; + if ((skb->ip_summed == CHECKSUM_NONE) || + (skb->ip_summed == CHECKSUM_UNNECESSARY)) + goto do_send; + rndis_msg_size += NDIS_CSUM_PPI_SIZE; ppi = init_ppi_data(rndis_msg, NDIS_CSUM_PPI_SIZE, TCPIP_CHKSUM_PKTINFO); From a8d22396302b7e4e5f0a594c1c1594388c29edaf Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 30 Apr 2014 22:36:33 +0200 Subject: [PATCH 537/623] PNP / ACPI: Do not return errors if _DIS or _SRS are not present The ACPI PNP subsystem returns errors from pnpacpi_set_resources() and pnpacpi_disable_resources() if the _SRS or _DIS methods are not present, respectively, but it should not do that, because those methods are optional. For this reason, modify pnpacpi_set_resources() and pnpacpi_disable_resources(), respectively, to ignore missing _SRS or _DIS. This problem has been uncovered by commit 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace) and manifested itself by causing serial port suspend to fail on some systems. Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace) References: https://bugzilla.kernel.org/show_bug.cgi?id=74371 Reported-by: wxg4net Reported-and-tested-by: Cc: 3.14+ # 3.14+ Signed-off-by: Rafael J. Wysocki --- drivers/pnp/pnpacpi/core.c | 44 ++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 18 deletions(-) diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index 9f611cbbc294..c31aa07b3ba5 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -83,8 +83,7 @@ static int pnpacpi_set_resources(struct pnp_dev *dev) { struct acpi_device *acpi_dev; acpi_handle handle; - struct acpi_buffer buffer; - int ret; + int ret = 0; pnp_dbg(&dev->dev, "set resources\n"); @@ -97,19 +96,26 @@ static int pnpacpi_set_resources(struct pnp_dev *dev) if (WARN_ON_ONCE(acpi_dev != dev->data)) dev->data = acpi_dev; - ret = pnpacpi_build_resource_template(dev, &buffer); - if (ret) - return ret; - ret = pnpacpi_encode_resources(dev, &buffer); - if (ret) { + if (acpi_has_method(handle, METHOD_NAME__SRS)) { + struct acpi_buffer buffer; + + ret = pnpacpi_build_resource_template(dev, &buffer); + if (ret) + return ret; + + ret = pnpacpi_encode_resources(dev, &buffer); + if (!ret) { + acpi_status status; + + status = acpi_set_current_resources(handle, &buffer); + if (ACPI_FAILURE(status)) + ret = -EIO; + } kfree(buffer.pointer); - return ret; } - if (ACPI_FAILURE(acpi_set_current_resources(handle, &buffer))) - ret = -EINVAL; - else if (acpi_bus_power_manageable(handle)) + if (!ret && acpi_bus_power_manageable(handle)) ret = acpi_bus_set_power(handle, ACPI_STATE_D0); - kfree(buffer.pointer); + return ret; } @@ -117,7 +123,7 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev) { struct acpi_device *acpi_dev; acpi_handle handle; - int ret; + acpi_status status; dev_dbg(&dev->dev, "disable resources\n"); @@ -128,13 +134,15 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev) } /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ - ret = 0; if (acpi_bus_power_manageable(handle)) acpi_bus_set_power(handle, ACPI_STATE_D3_COLD); - /* continue even if acpi_bus_set_power() fails */ - if (ACPI_FAILURE(acpi_evaluate_object(handle, "_DIS", NULL, NULL))) - ret = -ENODEV; - return ret; + + /* continue even if acpi_bus_set_power() fails */ + status = acpi_evaluate_object(handle, "_DIS", NULL, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) + return -ENODEV; + + return 0; } #ifdef CONFIG_ACPI_SLEEP From 4985c32ee4241d1aba1beeac72294faa46aaff10 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Wed, 30 Apr 2014 15:46:33 +0800 Subject: [PATCH 538/623] ACPI / processor: Fix failure of loading acpi-cpufreq driver According commit d640113fe (ACPI: processor: fix acpi_get_cpuid for UP processor), BIOS may not provide _MAT or MADT tables and acpi_get_apicid() always returns -1. For these cases, original code will pass apic_id with vaule of -1 to acpi_map_cpuid() and it will check the acpi_id. If acpi_id is equal to zero, ignores apic_id and return zero for CPU0. Commit b981513 (ACPI / scan: bail out early if failed to parse APIC ID for CPU) changed the behavior. Return ENODEV when find apic_id is less than zero after calling acpi_get_apicid(). This causes acpi-cpufreq driver fails to be loaded on some machines. This patch is to fix it. Fixes: b981513f806d (ACPI / scan: bail out early if failed to parse APIC ID for CPU) References: https://bugzilla.kernel.org/show_bug.cgi?id=73781 Cc: 3.14+ # 3.14+ Reported-and-tested-by: KATO Hiroshi Reported-and-tested-by: Stuart Foster Signed-off-by: Lan Tianyu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_processor.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index c29c2c3ec0ad..b06f5f55ada9 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -170,6 +170,9 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr) acpi_status status; int ret; + if (pr->apic_id == -1) + return -ENODEV; + status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta); if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) return -ENODEV; @@ -260,10 +263,8 @@ static int acpi_processor_get_info(struct acpi_device *device) } apic_id = acpi_get_apicid(pr->handle, device_declaration, pr->acpi_id); - if (apic_id < 0) { + if (apic_id < 0) acpi_handle_debug(pr->handle, "failed to get CPU APIC ID.\n"); - return -ENODEV; - } pr->apic_id = apic_id; cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id); From c0940e95f7a78be0525c8d31df0b1f71e149e57e Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 30 Apr 2014 14:08:14 -0700 Subject: [PATCH 539/623] Revert "hwmon: (coretemp) Refine TjMax detection" This reverts commit 9fb6c9c73b11bef65ba80a362547fd116c1e1c9d. Tjmax on some Intel CPUs is below 85 degrees C. One known example is L5630 with Tjmax of 71 degrees C. There are other Xeon processors with Tjmax of 70 or 80 degrees C. Also, the Intel IA32 System Programming document states that the temperature target is in bits 23:16 of MSR 0x1a2 (MSR_TEMPERATURE_TARGET), which is 8 bits, not 7. So even if turbostat uses similar checks to validate Tjmax, there is no evidence that the checks are actually required. On the contrary, the checks are known to cause problems and therefore need to be removed. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=75071. Fixes: 9fb6c9c hwmon: (coretemp) Refine TjMax detection Reviewed-by: Jean Delvare Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Guenter Roeck --- drivers/hwmon/coretemp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 6d02e3b06375..d76f0b70c6e0 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -365,12 +365,12 @@ static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) if (cpu_has_tjmax(c)) dev_warn(dev, "Unable to read TjMax from CPU %u\n", id); } else { - val = (eax >> 16) & 0x7f; + val = (eax >> 16) & 0xff; /* * If the TjMax is not plausible, an assumption * will be used */ - if (val >= 85) { + if (val) { dev_dbg(dev, "TjMax is %d degrees C\n", val); return val * 1000; } From 754320d6e166d3a12cb4810a452bde00afbd4e9a Mon Sep 17 00:00:00 2001 From: Leon Yu Date: Thu, 1 May 2014 03:31:28 +0000 Subject: [PATCH 540/623] aio: fix potential leak in aio_run_iocb(). iovec should be reclaimed whenever caller of rw_copy_check_uvector() returns, but it doesn't hold when failure happens right after aio_setup_vectored_rw(). Fix that in a such way to avoid hairy goto. Signed-off-by: Leon Yu Signed-off-by: Benjamin LaHaise Cc: stable@vger.kernel.org --- fs/aio.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index 2adbb0398ab9..a0ed6c7d2cd2 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1327,10 +1327,8 @@ rw_common: &iovec, compat) : aio_setup_single_vector(req, rw, buf, &nr_segs, iovec); - if (ret) - return ret; - - ret = rw_verify_area(rw, file, &req->ki_pos, req->ki_nbytes); + if (!ret) + ret = rw_verify_area(rw, file, &req->ki_pos, req->ki_nbytes); if (ret < 0) { if (iovec != &inline_vec) kfree(iovec); From 789ce9dca8007ab5d7c72b9a174a29243817ac32 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Wed, 30 Apr 2014 14:22:19 -0700 Subject: [PATCH 541/623] word-at-a-time: simplify big-endian zero_bytemask macro This is simpler and cleaner. Depending on architecture, a smart compiler may or may not generate the same code. Acked-by: Will Deacon Signed-off-by: Linus Torvalds --- include/asm-generic/word-at-a-time.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-generic/word-at-a-time.h b/include/asm-generic/word-at-a-time.h index d96deb443f18..94f9ea8abcae 100644 --- a/include/asm-generic/word-at-a-time.h +++ b/include/asm-generic/word-at-a-time.h @@ -50,7 +50,7 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct } #ifndef zero_bytemask -#define zero_bytemask(mask) (~0ul << __fls(mask) << 1) +#define zero_bytemask(mask) (~1ul << __fls(mask)) #endif #endif /* _ASM_WORD_AT_A_TIME_H */ From b7e1bd964812808710b48a5f9a58f7ddfb1d4e59 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 18 Apr 2014 13:38:35 +0530 Subject: [PATCH 542/623] Hexagon: Delete stale barrier.h Commit 93ea02bb8435 ("arch: Clean up asm/barrier.h implementations") wired generic barrier.h for hexagon, but failed to delete the existing file. Cc: Richard Kuo Cc: Peter Zijlstra Signed-off-by: Vineet Gupta Compile-tested-by: Guenter Roeck Signed-off-by: Linus Torvalds --- arch/hexagon/include/asm/barrier.h | 37 ------------------------------ 1 file changed, 37 deletions(-) delete mode 100644 arch/hexagon/include/asm/barrier.h diff --git a/arch/hexagon/include/asm/barrier.h b/arch/hexagon/include/asm/barrier.h deleted file mode 100644 index 4e863daea25b..000000000000 --- a/arch/hexagon/include/asm/barrier.h +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Memory barrier definitions for the Hexagon architecture - * - * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -#ifndef _ASM_BARRIER_H -#define _ASM_BARRIER_H - -#define rmb() barrier() -#define read_barrier_depends() barrier() -#define wmb() barrier() -#define mb() barrier() -#define smp_rmb() barrier() -#define smp_read_barrier_depends() barrier() -#define smp_wmb() barrier() -#define smp_mb() barrier() - -/* Set a value and use a memory barrier. Used by the scheduler somewhere. */ -#define set_mb(var, value) \ - do { var = value; mb(); } while (0) - -#endif /* _ASM_BARRIER_H */ From e0d8898d76a785453bfaf6cd08b830a7d5189f78 Mon Sep 17 00:00:00 2001 From: John David Anglin Date: Sun, 27 Apr 2014 16:20:47 -0400 Subject: [PATCH 543/623] parisc: remove _STK_LIM_MAX override There are only a couple of architectures that override _STK_LIM_MAX to a non-infinity value. This changes the stack allocation semantics in subtle ways. For example, GNU make changes its stack allocation to the hard maximum defined by _STK_LIM_MAX. As a results, threads executed by processes running under make are allocated a stack size of _STK_LIM_MAX rather than a sensible default value. This causes various thread stress tests to fail when they can't muster more than about 50 threads. The attached change implements the default behavior used by the majority of architectures. Signed-off-by: John David Anglin Reviewed-by: Carlos O'Donell Cc: stable@vger.kernel.org # 3.14 Signed-off-by: Helge Deller --- arch/parisc/include/uapi/asm/resource.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/parisc/include/uapi/asm/resource.h b/arch/parisc/include/uapi/asm/resource.h index 8b06343b62ed..090483c47dbb 100644 --- a/arch/parisc/include/uapi/asm/resource.h +++ b/arch/parisc/include/uapi/asm/resource.h @@ -1,7 +1,6 @@ #ifndef _ASM_PARISC_RESOURCE_H #define _ASM_PARISC_RESOURCE_H -#define _STK_LIM_MAX 10 * _STK_LIM #include #endif From 8a415e534dbda905b829320f90c9ce5f7359debf Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Tue, 29 Apr 2014 16:13:22 +0200 Subject: [PATCH 544/623] parisc: Use generic uapi/asm/resource.h file Signed-off-by: Helge Deller --- arch/parisc/include/uapi/asm/Kbuild | 3 ++- arch/parisc/include/uapi/asm/resource.h | 6 ------ 2 files changed, 2 insertions(+), 7 deletions(-) delete mode 100644 arch/parisc/include/uapi/asm/resource.h diff --git a/arch/parisc/include/uapi/asm/Kbuild b/arch/parisc/include/uapi/asm/Kbuild index a580642555b6..348356c99514 100644 --- a/arch/parisc/include/uapi/asm/Kbuild +++ b/arch/parisc/include/uapi/asm/Kbuild @@ -1,6 +1,8 @@ # UAPI Header export list include include/uapi/asm-generic/Kbuild.asm +generic-y += resource.h + header-y += bitsperlong.h header-y += byteorder.h header-y += errno.h @@ -13,7 +15,6 @@ header-y += msgbuf.h header-y += pdc.h header-y += posix_types.h header-y += ptrace.h -header-y += resource.h header-y += sembuf.h header-y += setup.h header-y += shmbuf.h diff --git a/arch/parisc/include/uapi/asm/resource.h b/arch/parisc/include/uapi/asm/resource.h deleted file mode 100644 index 090483c47dbb..000000000000 --- a/arch/parisc/include/uapi/asm/resource.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef _ASM_PARISC_RESOURCE_H -#define _ASM_PARISC_RESOURCE_H - -#include - -#endif From 131cd131a9ff63d4b84f3fe15073a2984ac30066 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 1 May 2014 16:14:24 -0400 Subject: [PATCH 545/623] dm cache: fix writethrough mode quiescing in cache_map Commit 2ee57d58735 ("dm cache: add passthrough mode") inadvertently removed the deferred set reference that was taken in cache_map()'s writethrough mode support. Restore taking this reference. This issue was found with code inspection. Signed-off-by: Mike Snitzer Acked-by: Joe Thornber Cc: stable@vger.kernel.org # 3.13+ --- drivers/md/dm-cache-target.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 1bf4a71919ec..9380be7b1895 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2488,6 +2488,7 @@ static int cache_map(struct dm_target *ti, struct bio *bio) } else { inc_hit_counter(cache, bio); + pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds); if (bio_data_dir(bio) == WRITE && writethrough_mode(&cache->features) && !is_dirty(cache, lookup_result.cblock)) From e46e08b843d8ff8c46ad8d7b0b95acaacc4e6195 Mon Sep 17 00:00:00 2001 From: Balakumaran Kannan Date: Thu, 24 Apr 2014 08:22:47 +0530 Subject: [PATCH 546/623] net phy: Check for aneg completion before setting state to PHY_RUNNING phy_state_machine should check whether auto-negotiatin is completed before changing phydev->state from PHY_NOLINK to PHY_RUNNING. If auto-negotiation is not completed phydev->state should be set to PHY_AN. Signed-off-by: Balakumaran Kannan Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/phy.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 1b6d09aef427..a972056b2249 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -765,6 +765,17 @@ void phy_state_machine(struct work_struct *work) break; if (phydev->link) { + if (AUTONEG_ENABLE == phydev->autoneg) { + err = phy_aneg_done(phydev); + if (err < 0) + break; + + if (!err) { + phydev->state = PHY_AN; + phydev->link_timeout = PHY_AN_TIMEOUT; + break; + } + } phydev->state = PHY_RUNNING; netif_carrier_on(phydev->attached_dev); phydev->adjust_link(phydev->attached_dev); From 39076b047b160821110cb4deed13424ddfdf8d00 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Wed, 30 Apr 2014 13:28:51 -0300 Subject: [PATCH 547/623] net: mvmdio: Check for a valid interrupt instead of an error The following commit: commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef Author: Rob Herring Date: Wed Apr 23 17:57:41 2014 -0500 of/irq: do irq resolution in platform_get_irq changed platform_get_irq() which now returns EINVAL and EPROBE_DEFER, in addition to ENXIO. If there's no interrupt for mvmdio, platform_get_irq() returns EINVAL, but we currently check only for ENXIO. Fix this by looking for a positive integer, which is the proper way of validating a virtual interrupt number. While at it, add a proper handling for the deferral probe case. Signed-off-by: Ezequiel Garcia Reviewed-by: Sebastian Hesselbarth Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvmdio.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c index b161a525fc5b..9d5ced263a5e 100644 --- a/drivers/net/ethernet/marvell/mvmdio.c +++ b/drivers/net/ethernet/marvell/mvmdio.c @@ -232,7 +232,7 @@ static int orion_mdio_probe(struct platform_device *pdev) clk_prepare_enable(dev->clk); dev->err_interrupt = platform_get_irq(pdev, 0); - if (dev->err_interrupt != -ENXIO) { + if (dev->err_interrupt > 0) { ret = devm_request_irq(&pdev->dev, dev->err_interrupt, orion_mdio_err_irq, IRQF_SHARED, pdev->name, dev); @@ -241,6 +241,9 @@ static int orion_mdio_probe(struct platform_device *pdev) writel(MVMDIO_ERR_INT_SMI_DONE, dev->regs + MVMDIO_ERR_INT_MASK); + + } else if (dev->err_interrupt == -EPROBE_DEFER) { + return -EPROBE_DEFER; } mutex_init(&dev->lock); From 561a4fe851ccab9dd0d14989ab566f9392d9f8b5 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Fri, 2 May 2014 13:30:04 -0400 Subject: [PATCH 548/623] tracing: Use rcu_dereference_sched() for trace event triggers As trace event triggers are now part of the mainline kernel, I added my trace event trigger tests to my test suite I run on all my kernels. Now these tests get run under different config options, and one of those options is CONFIG_PROVE_RCU, which checks under lockdep that the rcu locking primitives are being used correctly. This triggered the following splat: =============================== [ INFO: suspicious RCU usage. ] 3.15.0-rc2-test+ #11 Not tainted ------------------------------- kernel/trace/trace_events_trigger.c:80 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 4 locks held by swapper/1/0: #0: ((&(&j_cdbs->work)->timer)){..-...}, at: [] call_timer_fn+0x5/0x1be #1: (&(&pool->lock)->rlock){-.-...}, at: [] __queue_work+0x140/0x283 #2: (&p->pi_lock){-.-.-.}, at: [] try_to_wake_up+0x2e/0x1e8 #3: (&rq->lock){-.-.-.}, at: [] try_to_wake_up+0x1a0/0x1e8 stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.15.0-rc2-test+ #11 Hardware name: /DG965MQ, BIOS MQ96510J.86A.0372.2006.0605.1717 06/05/2006 0000000000000001 ffff88007e083b98 ffffffff819f53a5 0000000000000006 ffff88007b0942c0 ffff88007e083bc8 ffffffff81081307 ffff88007ad96d20 0000000000000000 ffff88007af2d840 ffff88007b2e701c ffff88007e083c18 Call Trace: [] dump_stack+0x4f/0x7c [] lockdep_rcu_suspicious+0x107/0x110 [] event_triggers_call+0x99/0x108 [] ftrace_event_buffer_commit+0x42/0xa4 [] ftrace_raw_event_sched_wakeup_template+0x71/0x7c [] ttwu_do_wakeup+0x7f/0xff [] ttwu_do_activate.constprop.126+0x5c/0x61 [] try_to_wake_up+0x1ac/0x1e8 [] wake_up_process+0x36/0x3b [] wake_up_worker+0x24/0x26 [] insert_work+0x5c/0x65 [] __queue_work+0x26c/0x283 [] ? __queue_work+0x283/0x283 [] delayed_work_timer_fn+0x1e/0x20 [] call_timer_fn+0xdf/0x1be^M [] ? call_timer_fn+0x5/0x1be [] ? __queue_work+0x283/0x283 [] run_timer_softirq+0x1a4/0x22f^M [] __do_softirq+0x17b/0x31b^M [] irq_exit+0x42/0x97 [] smp_apic_timer_interrupt+0x37/0x44 [] apic_timer_interrupt+0x6f/0x80 [] ? default_idle+0x21/0x32 [] ? default_idle+0x1f/0x32 [] arch_cpu_idle+0xf/0x11 [] cpu_startup_entry+0x1a3/0x213 [] start_secondary+0x212/0x219 The cause is that the triggers are protected by rcu_read_lock_sched() but the data is dereferenced with rcu_dereference() which expects it to be protected with rcu_read_lock(). The proper reference should be rcu_dereference_sched(). Cc: Tom Zanussi Cc: stable@vger.kernel.org # 3.14+ Signed-off-by: Steven Rostedt --- kernel/trace/trace_events_trigger.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace_events_trigger.c b/kernel/trace/trace_events_trigger.c index 925f537f07d1..4747b476a030 100644 --- a/kernel/trace/trace_events_trigger.c +++ b/kernel/trace/trace_events_trigger.c @@ -77,7 +77,7 @@ event_triggers_call(struct ftrace_event_file *file, void *rec) data->ops->func(data); continue; } - filter = rcu_dereference(data->filter); + filter = rcu_dereference_sched(data->filter); if (filter && !filter_match_preds(filter, rec)) continue; if (data->cmd_ops->post_trigger) { From da6e4cb67c6dd1f72257c0a4a97c26dc4e80d3a7 Mon Sep 17 00:00:00 2001 From: Dave Anderson Date: Tue, 15 Apr 2014 18:53:24 +0100 Subject: [PATCH 549/623] arm64: Fix for the arm64 kern_addr_valid() function Fix for the arm64 kern_addr_valid() function to recognize virtual addresses in the kernel logical memory map. The function fails as written because it does not check whether the addresses in that region are mapped at the pmd level to 2MB or 512MB pages, continues the page table walk to the pte level, and issues a garbage value to pfn_valid(). Tested on 4K-page and 64K-page kernels. Signed-off-by: Dave Anderson Signed-off-by: Catalin Marinas --- arch/arm64/mm/mmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 6b7e89569a3a..0a472c41a67f 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -374,6 +374,9 @@ int kern_addr_valid(unsigned long addr) if (pmd_none(*pmd)) return 0; + if (pmd_sect(*pmd)) + return pfn_valid(pmd_pfn(*pmd)); + pte = pte_offset_kernel(pmd, addr); if (pte_none(*pte)) return 0; From f774b7d10e2155e52b92dfce2f8cb099a6d6d0e6 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Mon, 28 Apr 2014 19:50:06 +0100 Subject: [PATCH 550/623] arm64: fixmap: fix missing sub-page offset for earlyprintk Commit d57c33c5daa4 (add generic fixmap.h) added (among other similar things) set_fixmap_io to deal with early ioremap of devices. More recently, commit bf4b558eba92 (arm64: add early_ioremap support) converted the arm64 earlyprintk to use set_fixmap_io. A side effect of this conversion is that my virtual machines have stopped booting when I pass "earlyprintk=uart8250-8bit,0x3f8" to the guest kernel. Turns out that the new earlyprintk code doesn't care at all about sub-page offsets, and just assumes that the earlyprintk device will be page-aligned. Obviously, that doesn't play well with the above example. Further investigation shows that set_fixmap_io uses __set_fixmap instead of __set_fixmap_offset. A fix is to introduce a set_fixmap_offset_io that uses the latter, and to remove the superflous call to fix_to_virt (which only returns the value that set_fixmap_io has already given us). With this applied, my VMs are back in business. Tested on a Cortex-A57 platform with kvmtool as platform emulation. Cc: Will Deacon Acked-by: Mark Salter Acked-by: Arnd Bergmann Signed-off-by: Marc Zyngier Signed-off-by: Catalin Marinas --- arch/arm64/kernel/early_printk.c | 6 ++---- include/asm-generic/fixmap.h | 3 +++ 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/arm64/kernel/early_printk.c b/arch/arm64/kernel/early_printk.c index ffbbdde7aba1..2dc36d00addf 100644 --- a/arch/arm64/kernel/early_printk.c +++ b/arch/arm64/kernel/early_printk.c @@ -143,10 +143,8 @@ static int __init setup_early_printk(char *buf) } /* no options parsing yet */ - if (paddr) { - set_fixmap_io(FIX_EARLYCON_MEM_BASE, paddr); - early_base = (void __iomem *)fix_to_virt(FIX_EARLYCON_MEM_BASE); - } + if (paddr) + early_base = (void __iomem *)set_fixmap_offset_io(FIX_EARLYCON_MEM_BASE, paddr); printch = match->printch; early_console = &early_console_dev; diff --git a/include/asm-generic/fixmap.h b/include/asm-generic/fixmap.h index 5a64ca4621f3..f23174fb9ec4 100644 --- a/include/asm-generic/fixmap.h +++ b/include/asm-generic/fixmap.h @@ -93,5 +93,8 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr) #define set_fixmap_io(idx, phys) \ __set_fixmap(idx, phys, FIXMAP_PAGE_IO) +#define set_fixmap_offset_io(idx, phys) \ + __set_fixmap_offset(idx, phys, FIXMAP_PAGE_IO) + #endif /* __ASSEMBLY__ */ #endif /* __ASM_GENERIC_FIXMAP_H */ From c7a4a7658d689f664050c45493d79adf053f226e Mon Sep 17 00:00:00 2001 From: Ritesh Harjani Date: Wed, 23 Apr 2014 06:29:46 +0100 Subject: [PATCH 551/623] arm64: Make default dma_ops to be noncoherent Currently arm64 dma_ops is by default made coherent which makes it opposite in default policy from arm. Make default dma_ops to be noncoherent (same as arm), as currently there aren't any dma-capable drivers which assumes coherent ops Signed-off-by: Ritesh Harjani Acked-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/mm/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 0ba347e59f06..1f65963a9c04 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -311,7 +311,7 @@ static int __init swiotlb_late_init(void) { size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT); - dma_ops = &coherent_swiotlb_dma_ops; + dma_ops = &noncoherent_swiotlb_dma_ops; return swiotlb_late_init_with_default_size(swiotlb_size); } From 6ecba8eb51b7d23fda66388a5420be7d8688b186 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 25 Apr 2014 15:31:45 +0100 Subject: [PATCH 552/623] arm64: Use bus notifiers to set per-device coherent DMA ops Recently, the default DMA ops have been changed to non-coherent for alignment with 32-bit ARM platforms (and DT files). This patch adds bus notifiers to be able to set the coherent DMA ops (with no cache maintenance) for devices explicitly marked as coherent via the "dma-coherent" DT property. Signed-off-by: Catalin Marinas --- arch/arm64/kernel/setup.c | 2 +- arch/arm64/mm/dma-mapping.c | 33 ++++++++++++++++++++++++++++++++- 2 files changed, 33 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 93e7df8968fe..7ec784653b29 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -396,7 +396,7 @@ static int __init arm64_device_init(void) of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); return 0; } -arch_initcall(arm64_device_init); +arch_initcall_sync(arm64_device_init); static DEFINE_PER_CPU(struct cpu, cpu_data); diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 1f65963a9c04..c851eb44dc50 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -22,8 +22,11 @@ #include #include #include +#include +#include #include #include +#include #include @@ -305,17 +308,45 @@ struct dma_map_ops coherent_swiotlb_dma_ops = { }; EXPORT_SYMBOL(coherent_swiotlb_dma_ops); +static int dma_bus_notifier(struct notifier_block *nb, + unsigned long event, void *_dev) +{ + struct device *dev = _dev; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + if (of_property_read_bool(dev->of_node, "dma-coherent")) + set_dma_ops(dev, &coherent_swiotlb_dma_ops); + + return NOTIFY_OK; +} + +static struct notifier_block platform_bus_nb = { + .notifier_call = dma_bus_notifier, +}; + +static struct notifier_block amba_bus_nb = { + .notifier_call = dma_bus_notifier, +}; + extern int swiotlb_late_init_with_default_size(size_t default_size); static int __init swiotlb_late_init(void) { size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT); + /* + * These must be registered before of_platform_populate(). + */ + bus_register_notifier(&platform_bus_type, &platform_bus_nb); + bus_register_notifier(&amba_bustype, &amba_bus_nb); + dma_ops = &noncoherent_swiotlb_dma_ops; return swiotlb_late_init_with_default_size(swiotlb_size); } -subsys_initcall(swiotlb_late_init); +arch_initcall(swiotlb_late_init); #define PREALLOC_DMA_DEBUG_ENTRIES 4096 From 7a8d1ec16dfbb7785e82ccc97b0076cc34911701 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Fri, 25 Apr 2014 16:39:49 +0100 Subject: [PATCH 553/623] arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent Since the default DMA ops for arm64 are non-coherent, mark the X-Gene controller explicitly as dma-coherent to avoid additional cache maintenance. Signed-off-by: Catalin Marinas Cc: Loc Ho --- Documentation/devicetree/bindings/ata/apm-xgene.txt | 3 +++ arch/arm64/boot/dts/apm-storm.dtsi | 3 +++ 2 files changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/ata/apm-xgene.txt b/Documentation/devicetree/bindings/ata/apm-xgene.txt index 7bcfbf59810e..a668f0e7d001 100644 --- a/Documentation/devicetree/bindings/ata/apm-xgene.txt +++ b/Documentation/devicetree/bindings/ata/apm-xgene.txt @@ -24,6 +24,7 @@ Required properties: * "sata-phy" for the SATA 6.0Gbps PHY Optional properties: +- dma-coherent : Present if dma operations are coherent - status : Shall be "ok" if enabled or "disabled" if disabled. Default is "ok". @@ -55,6 +56,7 @@ Example: <0x0 0x1f22e000 0x0 0x1000>, <0x0 0x1f227000 0x0 0x1000>; interrupts = <0x0 0x87 0x4>; + dma-coherent; status = "ok"; clocks = <&sataclk 0>; phys = <&phy2 0>; @@ -69,6 +71,7 @@ Example: <0x0 0x1f23e000 0x0 0x1000>, <0x0 0x1f237000 0x0 0x1000>; interrupts = <0x0 0x88 0x4>; + dma-coherent; status = "ok"; clocks = <&sataclk 0>; phys = <&phy3 0>; diff --git a/arch/arm64/boot/dts/apm-storm.dtsi b/arch/arm64/boot/dts/apm-storm.dtsi index 93f4b2dd9248..f8c40a66e65d 100644 --- a/arch/arm64/boot/dts/apm-storm.dtsi +++ b/arch/arm64/boot/dts/apm-storm.dtsi @@ -307,6 +307,7 @@ <0x0 0x1f21e000 0x0 0x1000>, <0x0 0x1f217000 0x0 0x1000>; interrupts = <0x0 0x86 0x4>; + dma-coherent; status = "disabled"; clocks = <&sata01clk 0>; phys = <&phy1 0>; @@ -321,6 +322,7 @@ <0x0 0x1f22e000 0x0 0x1000>, <0x0 0x1f227000 0x0 0x1000>; interrupts = <0x0 0x87 0x4>; + dma-coherent; status = "ok"; clocks = <&sata23clk 0>; phys = <&phy2 0>; @@ -334,6 +336,7 @@ <0x0 0x1f23d000 0x0 0x1000>, <0x0 0x1f23e000 0x0 0x1000>; interrupts = <0x0 0x88 0x4>; + dma-coherent; status = "ok"; clocks = <&sata45clk 0>; phys = <&phy3 0>; From c1db30a2a79eb59997b13b8cabf2a50bea9f04e1 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 1 May 2014 15:21:42 -0400 Subject: [PATCH 554/623] USB: OHCI: fix problem with global suspend on ATI controllers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some OHCI controllers from ATI/AMD seem to have difficulty with "global" USB suspend, that is, suspending an entire USB bus without setting the suspend feature for each port connected to a device. When we try to resume the child devices, the controller gives timeout errors on the unsuspended ports, requiring resets, and can even cause ohci-hcd to hang; see http://marc.info/?l=linux-usb&m=139514332820398&w=2 and the following messages. This patch fixes the problem by adding a new quirk flag to ohci-hcd. The flag causes the ohci_rh_suspend() routine to suspend each unsuspended, enabled port before suspending the root hub. This effectively converts the "global" suspend to an ordinary root-hub suspend. There is no need to unsuspend these ports when the root hub is resumed, because the child devices will be resumed anyway in the course of a normal system resume ("global" suspend is never used for runtime PM). This patch should be applied to all stable kernels which include commit 0aa2832dd0d9 (USB: use "global suspend" for system sleep on USB-2 buses) or a backported version thereof. Signed-off-by: Alan Stern Reported-by: Peter Münster Tested-by: Peter Münster CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-hub.c | 18 ++++++++++++++++++ drivers/usb/host/ohci-pci.c | 1 + drivers/usb/host/ohci.h | 2 ++ 3 files changed, 21 insertions(+) diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c index c81c8721cc5a..cd871b895013 100644 --- a/drivers/usb/host/ohci-hub.c +++ b/drivers/usb/host/ohci-hub.c @@ -90,6 +90,24 @@ __acquires(ohci->lock) dl_done_list (ohci); finish_unlinks (ohci, ohci_frame_no(ohci)); + /* + * Some controllers don't handle "global" suspend properly if + * there are unsuspended ports. For these controllers, put all + * the enabled ports into suspend before suspending the root hub. + */ + if (ohci->flags & OHCI_QUIRK_GLOBAL_SUSPEND) { + __hc32 __iomem *portstat = ohci->regs->roothub.portstatus; + int i; + unsigned temp; + + for (i = 0; i < ohci->num_ports; (++i, ++portstat)) { + temp = ohci_readl(ohci, portstat); + if ((temp & (RH_PS_PES | RH_PS_PSS)) == + RH_PS_PES) + ohci_writel(ohci, RH_PS_PSS, portstat); + } + } + /* maybe resume can wake root hub */ if (ohci_to_hcd(ohci)->self.root_hub->do_remote_wakeup || autostop) { ohci->hc_control |= OHCI_CTRL_RWE; diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index 90879e9ccbec..bb1509675727 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -160,6 +160,7 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd) ohci_dbg(ohci, "enabled AMD prefetch quirk\n"); } + ohci->flags |= OHCI_QUIRK_GLOBAL_SUSPEND; return 0; } diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 9250cada13f0..4550ce05af7f 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -405,6 +405,8 @@ struct ohci_hcd { #define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */ #define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/ #define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */ +#define OHCI_QUIRK_GLOBAL_SUSPEND 0x800 /* must suspend ports */ + // there are also chip quirks/bugs in init logic struct work_struct nec_work; /* Worker for NEC quirk */ From 4d7c0136a54f62501f8a34c4d08a5e0258d3d3ca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Sun, 27 Apr 2014 16:47:42 +0200 Subject: [PATCH 555/623] usb: qcserial: add a number of Dell devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Dan writes: "The Dell drivers use the same configuration for PIDs: 81A2: Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card 81A3: Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card 81A4: Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card 81A8: Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card 81A9: Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card These devices are all clearly Sierra devices, but are also definitely Gobi-based. The A8 might be the MC7700/7710 and A9 is likely a MC7750. >From DellGobi5kSetup.exe from the Dell drivers: usbif0: serial/firmware loader? usbif2: nmea usbif3: modem/ppp usbif8: net/QMI" Cc: Reported-by: AceLan Kao Reported-by: Dan Williams Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 7ed681a714a5..6c0a542e8ec1 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -151,6 +151,21 @@ static const struct usb_device_id id_table[] = { {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 0)}, /* Netgear AirCard 340U Device Management */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 2)}, /* Netgear AirCard 340U NMEA */ {USB_DEVICE_INTERFACE_NUMBER(0x1199, 0x9051, 3)}, /* Netgear AirCard 340U Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 0)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a2, 3)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 0)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 2)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a3, 3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 0)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 2)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a4, 3)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 0)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 2)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a8, 3)}, /* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card Modem */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 0)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card Device Management */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 2)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card NMEA */ + {USB_DEVICE_INTERFACE_NUMBER(0x413c, 0x81a9, 3)}, /* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card Modem */ { } /* Terminating entry */ }; From df602c2d2358f02c6e49cffc5b49b9daa16db033 Mon Sep 17 00:00:00 2001 From: Daniele Forsi Date: Tue, 29 Apr 2014 11:44:03 +0200 Subject: [PATCH 556/623] usb: storage: shuttle_usbat: fix discs being detected twice Even if the USB-to-ATAPI converter supported multiple LUNs, this driver would always detect the same physical device or media because it doesn't use srb->device->lun in any way. Tested with an Hewlett-Packard CD-Writer Plus 8200e. Signed-off-by: Daniele Forsi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/shuttle_usbat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c index 4ef2a80728f7..008d805c3d21 100644 --- a/drivers/usb/storage/shuttle_usbat.c +++ b/drivers/usb/storage/shuttle_usbat.c @@ -1851,7 +1851,7 @@ static int usbat_probe(struct usb_interface *intf, us->transport_name = "Shuttle USBAT"; us->transport = usbat_flash_transport; us->transport_reset = usb_stor_CB_reset; - us->max_lun = 1; + us->max_lun = 0; result = usb_stor_probe2(us); return result; From d183c81929beeba842b74422f754446ef2b8b49c Mon Sep 17 00:00:00 2001 From: Nikita Yushchenko Date: Mon, 28 Apr 2014 19:23:44 +0400 Subject: [PATCH 557/623] fsl-usb: do not test for PHY_CLK_VALID bit on controller version 1.6 Per reference manuals of Freescale P1020 and P2020 SoCs, USB controller present in these SoCs has bit 17 of USBx_CONTROL register marked as Reserved - there is no PHY_CLK_VALID bit there. Testing for this bit in ehci_fsl_setup_phy() behaves differently on two P1020RDB boards available here - on one board test passes and fsl-usb init succeeds, but on other board test fails, causing fsl-usb init to fail. This patch changes ehci_fsl_setup_phy() not to test PHY_CLK_VALID on controller version 1.6 that (per manual) does not have this bit. Signed-off-by: Nikita Yushchenko Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 6f2c8d3899d2..cf2734b532a7 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -248,7 +248,8 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd, break; } - if (pdata->have_sysif_regs && pdata->controller_ver && + if (pdata->have_sysif_regs && + pdata->controller_ver > FSL_USB_VER_1_6 && (phy_mode == FSL_USB2_PHY_ULPI)) { /* check PHY_CLK_VALID to get phy clk valid */ if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) & From b790f210fe8423eff881b2a8a93ba5dbc45534d0 Mon Sep 17 00:00:00 2001 From: Michael Welling Date: Fri, 25 Apr 2014 19:27:48 -0500 Subject: [PATCH 558/623] tty: serial: 8250_core.c Bug fix for Exar chips. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The sleep function was updated to put the serial port to sleep only when necessary. This appears to resolve the errant behavior of the driver as described in Kernel Bug 61961 – "My Exar Corp. XR17C/D152 Dual PCI UART modem does not work with 3.8.0". Signed-off-by: Michael Welling Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 0e1bf8858431..2d4bd3929e50 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -555,7 +555,7 @@ static void serial8250_set_sleep(struct uart_8250_port *p, int sleep) */ if ((p->port.type == PORT_XR17V35X) || (p->port.type == PORT_XR17D15X)) { - serial_out(p, UART_EXAR_SLEEP, 0xff); + serial_out(p, UART_EXAR_SLEEP, sleep ? 0xff : 0); return; } From 4291086b1f081b869c6d79e5b7441633dc3ace00 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sat, 3 May 2014 14:04:59 +0200 Subject: [PATCH 559/623] n_tty: Fix n_tty_write crash when echoing in raw mode The tty atomic_write_lock does not provide an exclusion guarantee for the tty driver if the termios settings are LECHO & !OPOST. And since it is unexpected and not allowed to call TTY buffer helpers like tty_insert_flip_string concurrently, this may lead to crashes when concurrect writers call pty_write. In that case the following two writers: * the ECHOing from a workqueue and * pty_write from the process race and can overflow the corresponding TTY buffer like follows. If we look into tty_insert_flip_string_fixed_flag, there is: int space = __tty_buffer_request_room(port, goal, flags); struct tty_buffer *tb = port->buf.tail; ... memcpy(char_buf_ptr(tb, tb->used), chars, space); ... tb->used += space; so the race of the two can result in something like this: A B __tty_buffer_request_room __tty_buffer_request_room memcpy(buf(tb->used), ...) tb->used += space; memcpy(buf(tb->used), ...) ->BOOM B's memcpy is past the tty_buffer due to the previous A's tb->used increment. Since the N_TTY line discipline input processing can output concurrently with a tty write, obtain the N_TTY ldisc output_lock to serialize echo output with normal tty writes. This ensures the tty buffer helper tty_insert_flip_string is not called concurrently and everything is fine. Note that this is nicely reproducible by an ordinary user using forkpty and some setup around that (raw termios + ECHO). And it is present in kernels at least after commit d945cb9cce20ac7143c2de8d88b187f62db99bdc (pty: Rework the pty layer to use the normal buffering logic) in 2.6.31-rc3. js: add more info to the commit log js: switch to bool js: lock unconditionally js: lock only the tty->ops->write call References: CVE-2014-0196 Reported-and-tested-by: Jiri Slaby Signed-off-by: Peter Hurley Signed-off-by: Jiri Slaby Cc: Linus Torvalds Cc: Alan Cox Cc: Signed-off-by: Greg Kroah-Hartman --- drivers/tty/n_tty.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 41fe8a047d37..fe9d129c8735 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -2353,8 +2353,12 @@ static ssize_t n_tty_write(struct tty_struct *tty, struct file *file, if (tty->ops->flush_chars) tty->ops->flush_chars(tty); } else { + struct n_tty_data *ldata = tty->disc_data; + while (nr > 0) { + mutex_lock(&ldata->output_lock); c = tty->ops->write(tty, b, nr); + mutex_unlock(&ldata->output_lock); if (c < 0) { retval = c; goto break_out; From 501fed45b7e8836ee9373f4d31e2d85e3db6103a Mon Sep 17 00:00:00 2001 From: Tomoki Sekiyama Date: Fri, 2 May 2014 18:58:24 -0400 Subject: [PATCH 560/623] drivers/tty/hvc: don't free hvc_console_setup after init When 'console=hvc0' is specified to the kernel parameter in x86 KVM guest, hvc console is setup within a kthread. However, that will cause SEGV and the boot will fail when the driver is builtin to the kernel, because currently hvc_console_setup() is annotated with '__init'. This patch removes '__init' to boot the guest successfully with 'console=hvc0'. Signed-off-by: Tomoki Sekiyama Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/hvc/hvc_console.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 94f9e3a38412..0ff7fda0742f 100644 --- a/drivers/tty/hvc/hvc_console.c +++ b/drivers/tty/hvc/hvc_console.c @@ -190,7 +190,7 @@ static struct tty_driver *hvc_console_device(struct console *c, int *index) return hvc_driver; } -static int __init hvc_console_setup(struct console *co, char *options) +static int hvc_console_setup(struct console *co, char *options) { if (co->index < 0 || co->index >= MAX_NR_HVC_CONSOLES) return -ENODEV; From 5fbf1a65dd53ef313783c34a0e93a6e29def6136 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 2 May 2014 10:56:11 -0400 Subject: [PATCH 561/623] Revert "tty: Fix race condition between __tty_buffer_request_room and flush_to_ldisc" This reverts commit 6a20dbd6caa2358716136144bf524331d70b1e03. Although the commit correctly identifies an unsafe race condition between __tty_buffer_request_room() and flush_to_ldisc(), the commit fixes the race with an unnecessary spinlock in a lockless algorithm. The follow-on commit, "tty: Fix lockless tty buffer race" fixes the race locklessly. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 16 ++-------------- include/linux/tty.h | 1 - 2 files changed, 2 insertions(+), 15 deletions(-) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index f1d30f6945af..8ebd9f88a6f6 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -255,16 +255,11 @@ static int __tty_buffer_request_room(struct tty_port *port, size_t size, if (change || left < size) { /* This is the slow path - looking for new buffers to use */ if ((n = tty_buffer_alloc(port, size)) != NULL) { - unsigned long iflags; - n->flags = flags; buf->tail = n; - - spin_lock_irqsave(&buf->flush_lock, iflags); b->commit = b->used; + smp_mb(); b->next = n; - spin_unlock_irqrestore(&buf->flush_lock, iflags); - } else if (change) size = 0; else @@ -448,7 +443,6 @@ static void flush_to_ldisc(struct work_struct *work) mutex_lock(&buf->lock); while (1) { - unsigned long flags; struct tty_buffer *head = buf->head; int count; @@ -456,19 +450,14 @@ static void flush_to_ldisc(struct work_struct *work) if (atomic_read(&buf->priority)) break; - spin_lock_irqsave(&buf->flush_lock, flags); count = head->commit - head->read; if (!count) { - if (head->next == NULL) { - spin_unlock_irqrestore(&buf->flush_lock, flags); + if (head->next == NULL) break; - } buf->head = head->next; - spin_unlock_irqrestore(&buf->flush_lock, flags); tty_buffer_free(port, head); continue; } - spin_unlock_irqrestore(&buf->flush_lock, flags); count = receive_buf(tty, head, count); if (!count) @@ -523,7 +512,6 @@ void tty_buffer_init(struct tty_port *port) struct tty_bufhead *buf = &port->buf; mutex_init(&buf->lock); - spin_lock_init(&buf->flush_lock); tty_buffer_reset(&buf->sentinel, 0); buf->head = &buf->sentinel; buf->tail = &buf->sentinel; diff --git a/include/linux/tty.h b/include/linux/tty.h index 036cccd80d9f..1c3316a47d7e 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -61,7 +61,6 @@ struct tty_bufhead { struct tty_buffer *head; /* Queue head */ struct work_struct work; struct mutex lock; - spinlock_t flush_lock; atomic_t priority; struct tty_buffer sentinel; struct llist_head free; /* Free queue head */ From 62a0d8d7c2b29f92850e4ee3c38e5dfd936e92b2 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 2 May 2014 10:56:12 -0400 Subject: [PATCH 562/623] tty: Fix lockless tty buffer race Commit 6a20dbd6caa2358716136144bf524331d70b1e03, "tty: Fix race condition between __tty_buffer_request_room and flush_to_ldisc" correctly identifies an unsafe race condition between __tty_buffer_request_room() and flush_to_ldisc(), where the consumer flush_to_ldisc() prematurely advances the head before consuming the last of the data committed. For example: CPU 0 | CPU 1 __tty_buffer_request_room | flush_to_ldisc ... | ... | count = head->commit - head->read n = tty_buffer_alloc() | b->commit = b->used | b->next = n | | if (!count) /* T */ | if (head->next == NULL) /* F */ | buf->head = head->next In this case, buf->head has been advanced but head->commit may have been updated with a new value. Instead of reintroducing an unnecessary lock, fix the race locklessly. Read the commit-next pair in the reverse order of writing, which guarantees the commit value read is the latest value written if the head is advancing. Reported-by: Manfred Schlaegl Cc: # 3.12.x+ Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index 8ebd9f88a6f6..cf78d1985cd8 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -258,7 +258,11 @@ static int __tty_buffer_request_room(struct tty_port *port, size_t size, n->flags = flags; buf->tail = n; b->commit = b->used; - smp_mb(); + /* paired w/ barrier in flush_to_ldisc(); ensures the + * latest commit value can be read before the head is + * advanced to the next buffer + */ + smp_wmb(); b->next = n; } else if (change) size = 0; @@ -444,17 +448,24 @@ static void flush_to_ldisc(struct work_struct *work) while (1) { struct tty_buffer *head = buf->head; + struct tty_buffer *next; int count; /* Ldisc or user is trying to gain exclusive access */ if (atomic_read(&buf->priority)) break; + next = head->next; + /* paired w/ barrier in __tty_buffer_request_room(); + * ensures commit value read is not stale if the head + * is advancing to the next buffer + */ + smp_rmb(); count = head->commit - head->read; if (!count) { - if (head->next == NULL) + if (next == NULL) break; - buf->head = head->next; + buf->head = next; tty_buffer_free(port, head); continue; } From f0ef5d41792a46a1085dead9dfb0bdb2c574638e Mon Sep 17 00:00:00 2001 From: "Victor A. Santos" Date: Sat, 26 Apr 2014 23:20:14 -0300 Subject: [PATCH 563/623] USB: Nokia 305 should be treated as unusual dev Signed-off-by: Victor A. Santos Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index f4a82291894a..6eee0ced7330 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -234,6 +234,13 @@ UNUSUAL_DEV( 0x0421, 0x0495, 0x0370, 0x0370, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_MAX_SECTORS_64 ), +/* Patch submitted by Victor A. Santos */ +UNUSUAL_DEV( 0x0421, 0x05af, 0x0742, 0x0742, + "Nokia", + "305", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64), + /* Patch submitted by Mikhail Zolotaryov */ UNUSUAL_DEV( 0x0421, 0x06aa, 0x1110, 0x1110, "Nokia", From 6ed07d45d09bc2aa60e27b845543db9972e22a38 Mon Sep 17 00:00:00 2001 From: Daniele Forsi Date: Mon, 28 Apr 2014 17:09:11 +0200 Subject: [PATCH 564/623] USB: Nokia 5300 should be treated as unusual dev Signed-off-by: Daniele Forsi Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 6eee0ced7330..174a447868cd 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -234,6 +234,13 @@ UNUSUAL_DEV( 0x0421, 0x0495, 0x0370, 0x0370, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_MAX_SECTORS_64 ), +/* Reported by Daniele Forsi */ +UNUSUAL_DEV( 0x0421, 0x04b9, 0x0350, 0x0350, + "Nokia", + "5300", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64 ), + /* Patch submitted by Victor A. Santos */ UNUSUAL_DEV( 0x0421, 0x05af, 0x0742, 0x0742, "Nokia", From e715eb2e73918f4cefbba0b717ff8902e8030b39 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 28 Apr 2014 17:08:37 +0100 Subject: [PATCH 565/623] vexpress: Initialise the sysregs before setting up the clocks Following arm64 commit bc3ee18a7a57 (arm64: init: Move of_clk_init to time_init()), vexpress_osc_of_setup() is called via of_clk_init() long before initcalls are issued. Initialising the vexpress oscillators requires the vespress sysregs to be already initialised, so this patch adds an explicit call to vexpress_sysreg_of_early_init() in vexpress oscillator setup function. Signed-off-by: Catalin Marinas Tested-by: Will Deacon Acked-by: Will Deacon Tested-by: Pawel Moll Acked-by: Pawel Moll Cc: Mike Turquette --- drivers/clk/versatile/clk-vexpress-osc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/versatile/clk-vexpress-osc.c b/drivers/clk/versatile/clk-vexpress-osc.c index a535c7bf8574..422391242b39 100644 --- a/drivers/clk/versatile/clk-vexpress-osc.c +++ b/drivers/clk/versatile/clk-vexpress-osc.c @@ -100,6 +100,8 @@ void __init vexpress_osc_of_setup(struct device_node *node) struct clk *clk; u32 range[2]; + vexpress_sysreg_of_early_init(); + osc = kzalloc(sizeof(*osc), GFP_KERNEL); if (!osc) return; From 895162b1101b3ea5db08ca6822ae9672717efec0 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Fri, 2 May 2014 15:32:16 +0200 Subject: [PATCH 566/623] netfilter: ipv4: defrag: set local_df flag on defragmented skb else we may fail to forward skb even if original fragments do fit outgoing link mtu: 1. remote sends 2k packets in two 1000 byte frags, DF set 2. we want to forward but only see '2k > mtu and DF set' 3. we then send icmp error saying that outgoing link is 1500 But original sender never sent a packet that would not fit the outgoing link. Setting local_df makes outgoing path test size vs. IPCB(skb)->frag_max_size, so we will still send the correct error in case the largest original size did not fit outgoing link mtu. Reported-by: Maxime Bizon Suggested-by: Maxime Bizon Fixes: 5f2d04f1f9 (ipv4: fix path MTU discovery with connection tracking) Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- net/ipv4/netfilter/nf_defrag_ipv4.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c index 12e13bd82b5b..f40f321b41fc 100644 --- a/net/ipv4/netfilter/nf_defrag_ipv4.c +++ b/net/ipv4/netfilter/nf_defrag_ipv4.c @@ -22,7 +22,6 @@ #endif #include -/* Returns new sk_buff, or NULL */ static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user) { int err; @@ -33,8 +32,10 @@ static int nf_ct_ipv4_gather_frags(struct sk_buff *skb, u_int32_t user) err = ip_defrag(skb, user); local_bh_enable(); - if (!err) + if (!err) { ip_send_check(ip_hdr(skb)); + skb->local_df = 1; + } return err; } From ecd15dd7e45f3683fa8142b9f2c015dfaa0c243d Mon Sep 17 00:00:00 2001 From: Denys Fedoryshchenko Date: Sun, 4 May 2014 13:35:37 +0200 Subject: [PATCH 567/623] netfilter: nfnetlink: Fix use after free when it fails to process batch This bug manifests when calling the nft command line tool without nf_tables kernel support. kernel message: [ 44.071555] Netfilter messages via NETLINK v0.30. [ 44.072253] BUG: unable to handle kernel NULL pointer dereference at 0000000000000119 [ 44.072264] IP: [] netlink_getsockbyportid+0xf/0x70 [ 44.072272] PGD 7f2b74067 PUD 7f2b73067 PMD 0 [ 44.072277] Oops: 0000 [#1] SMP [...] [ 44.072369] Call Trace: [ 44.072373] [] netlink_unicast+0x91/0x200 [ 44.072377] [] netlink_ack+0x99/0x110 [ 44.072381] [] nfnetlink_rcv+0x3c1/0x408 [nfnetlink] [ 44.072385] [] netlink_unicast+0xf3/0x200 [ 44.072389] [] netlink_sendmsg+0x2ff/0x740 [ 44.072394] [] ? __mmdrop+0x62/0x90 [ 44.072398] [] sock_sendmsg+0x8b/0xc0 [ 44.072403] [] ? copy_user_enhanced_fast_string+0x5/0x10 [ 44.072406] [] ? move_addr_to_kernel+0x2c/0x50 [ 44.072410] [] ___sys_sendmsg+0x3c3/0x3d0 [ 44.072415] [] ? handle_mm_fault+0xa9a/0xc60 [ 44.072420] [] ? mmap_region+0x166/0x5a0 [ 44.072424] [] ? __do_page_fault+0x1dc/0x510 [ 44.072428] [] ? apparmor_capable+0x1c/0x60 [ 44.072435] [] ? _raw_spin_unlock_bh+0x1a/0x20 [ 44.072439] [] ? release_sock+0x106/0x150 [ 44.072443] [] __sys_sendmsg+0x42/0x80 [ 44.072446] [] SyS_sendmsg+0x12/0x20 [ 44.072450] [] system_call_fastpath+0x1a/0x1f Signed-off-by: Denys Fedoryshchenko Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nfnetlink.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index e009087620e3..23ef77c60fff 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -256,15 +256,15 @@ replay: #endif { nfnl_unlock(subsys_id); - kfree_skb(nskb); - return netlink_ack(skb, nlh, -EOPNOTSUPP); + netlink_ack(skb, nlh, -EOPNOTSUPP); + return kfree_skb(nskb); } } if (!ss->commit || !ss->abort) { nfnl_unlock(subsys_id); - kfree_skb(nskb); - return netlink_ack(skb, nlh, -EOPNOTSUPP); + netlink_ack(skb, nlh, -EOPNOTSUPP); + return kfree_skb(skb); } while (skb->len >= nlmsg_total_size(0)) { From f6a082fed1e6407c2f4437d0d963b1bcbe5f9f58 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Thu, 1 May 2014 09:23:06 -0700 Subject: [PATCH 568/623] net: sched: lock imbalance in hhf qdisc hhf_change() takes the sch_tree_lock and releases it but misses the error cases. Fix the missed case here. To reproduce try a command like this, # tc qdisc change dev p3p2 root hhf quantum 40960 non_hh_weight 300000 Signed-off-by: John Fastabend Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/sched/sch_hhf.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/net/sched/sch_hhf.c b/net/sched/sch_hhf.c index edee03d922e2..6e957c3b9854 100644 --- a/net/sched/sch_hhf.c +++ b/net/sched/sch_hhf.c @@ -553,11 +553,6 @@ static int hhf_change(struct Qdisc *sch, struct nlattr *opt) if (err < 0) return err; - sch_tree_lock(sch); - - if (tb[TCA_HHF_BACKLOG_LIMIT]) - sch->limit = nla_get_u32(tb[TCA_HHF_BACKLOG_LIMIT]); - if (tb[TCA_HHF_QUANTUM]) new_quantum = nla_get_u32(tb[TCA_HHF_QUANTUM]); @@ -567,6 +562,12 @@ static int hhf_change(struct Qdisc *sch, struct nlattr *opt) non_hh_quantum = (u64)new_quantum * new_hhf_non_hh_weight; if (non_hh_quantum > INT_MAX) return -EINVAL; + + sch_tree_lock(sch); + + if (tb[TCA_HHF_BACKLOG_LIMIT]) + sch->limit = nla_get_u32(tb[TCA_HHF_BACKLOG_LIMIT]); + q->quantum = new_quantum; q->hhf_non_hh_weight = new_hhf_non_hh_weight; From 89ca3b881987f5a4be4c5dbaa7f0df12bbdde2fd Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 4 May 2014 18:14:42 -0700 Subject: [PATCH 569/623] Linux 3.15-rc4 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 041c685e11ea..28a7259e0f3b 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 15 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Shuffling Zombie Juror # *DOCUMENTATION* From fcdd57c8902a936a616df2066d873b38ef3ed364 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Mon, 7 Apr 2014 13:39:06 +0300 Subject: [PATCH 570/623] UBIFS: fix remount error path Dan's "smatch" checker found out that there was a bug in the error path of the 'ubifs_remount_rw()' function. Instead of jumping to the "out" label which cleans-things up, we just returned. This patch fixes the problem. Reported-by: Dan Carpenter Signed-off-by: Artem Bityutskiy --- fs/ubifs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index a1266089eca1..a81c7b556896 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1556,7 +1556,7 @@ static int ubifs_remount_rw(struct ubifs_info *c) if (c->space_fixup) { err = ubifs_fixup_free_space(c); if (err) - return err; + goto out; } err = check_free_space(c); From 87ed89d21ede38f86be9419ca7c6dd4761764bbb Mon Sep 17 00:00:00 2001 From: Tanya Brokhman Date: Tue, 1 Apr 2014 11:01:12 +0300 Subject: [PATCH 571/623] UBI: fix error path in __wl_get_peb In case of an error (if there are not free PEB's for example), __wl_get_peb will return a negative value. In order to prevent access violation we need to test the returned value prior to using it later on. Signed-off-by: Tatyana Brokhman Reviewed-by: Dolev Raviv Acked-by: Richard Weinberger Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/wl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 02317c1c0238..457ead32105c 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -684,6 +684,9 @@ int ubi_wl_get_peb(struct ubi_device *ubi) peb = __wl_get_peb(ubi); spin_unlock(&ubi->wl_lock); + if (peb < 0) + return peb; + err = ubi_self_check_all_ff(ubi, peb, ubi->vid_hdr_aloffset, ubi->peb_size - ubi->vid_hdr_aloffset); if (err) { From 3d21bb7667c4b57a15077d60d23385d9a1c01d08 Mon Sep 17 00:00:00 2001 From: Tanya Brokhman Date: Tue, 1 Apr 2014 11:02:07 +0300 Subject: [PATCH 572/623] UBI: fix ubi free PEBs count calculation The ubi->free_count should be updated with every insert/remove to/from the ubi->free list. Signed-off-by: Tanya Brokhman Reviewed-by: Dolev Raviv Acked-by: Richard Weinberger Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/wl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 457ead32105c..0f3425dac910 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -671,6 +671,8 @@ static struct ubi_wl_entry *get_peb_for_wl(struct ubi_device *ubi) e = find_wl_entry(ubi, &ubi->free, WL_FREE_MAX_DIFF); self_check_in_wl_tree(ubi, e, &ubi->free); + ubi->free_count--; + ubi_assert(ubi->free_count >= 0); rb_erase(&e->u.rb, &ubi->free); return e; @@ -1071,6 +1073,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk, /* Give the unused PEB back */ wl_tree_add(e2, &ubi->free); + ubi->free_count++; goto out_cancel; } self_check_in_wl_tree(ubi, e1, &ubi->used); From bebfef150e0b8fa68704cddacf05b8c26462d565 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 7 Apr 2014 21:44:07 -0700 Subject: [PATCH 573/623] UBI: avoid workqueue format string leak When building the name for the workqueue thread, make sure a format string cannot leak in from the disk name. Signed-off-by: Kees Cook Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/block.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index 7ff473c871a9..8d659e6a1b4c 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -431,7 +431,7 @@ int ubiblock_create(struct ubi_volume_info *vi) * Create one workqueue per volume (per registered block device). * Rembember workqueues are cheap, they're not threads. */ - dev->wq = alloc_workqueue(gd->disk_name, 0, 0); + dev->wq = alloc_workqueue("%s", 0, 0, gd->disk_name); if (!dev->wq) goto out_free_queue; INIT_WORK(&dev->work, ubiblock_do_work); From f4ebddf9abb1fb0add1ce8e9c0bc414f1c17d81d Mon Sep 17 00:00:00 2001 From: Henning Rogge Date: Thu, 1 May 2014 10:03:46 +0200 Subject: [PATCH 574/623] mac80211: Fix mac80211 station info rx bitrate for IBSS mode Filter out incoming multicast packages before applying their bitrate to the rx bitrate station info field to prevent them from setting the rx bitrate to the basic multicast rate. Signed-off-by: Henning Rogge Signed-off-by: Johannes Berg --- net/mac80211/rx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 216c45b949e5..2b608b2b70ec 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1231,7 +1231,8 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) if (ether_addr_equal(bssid, rx->sdata->u.ibss.bssid) && test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { sta->last_rx = jiffies; - if (ieee80211_is_data(hdr->frame_control)) { + if (ieee80211_is_data(hdr->frame_control) && + !is_multicast_ether_addr(hdr->addr1)) { sta->last_rx_rate_idx = status->rate_idx; sta->last_rx_rate_flag = status->flag; sta->last_rx_rate_vht_flag = status->vht_flag; From c1fbb258846dfc425507a093922d2d001e54c3ea Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 30 Apr 2014 15:58:13 +0300 Subject: [PATCH 575/623] cfg80211: free sme on connection failures cfg80211 is notified about connection failures by __cfg80211_connect_result() call. However, this function currently does not free cfg80211 sme. This results in hanging connection attempts in some cases e.g. when mac80211 authentication attempt is denied, we have this function call: ieee80211_rx_mgmt_auth() -> cfg80211_rx_mlme_mgmt() -> cfg80211_process_auth() -> cfg80211_sme_rx_auth() -> __cfg80211_connect_result() but cfg80211_sme_free() is never get called. Fixes: ceca7b712 ("cfg80211: separate internal SME implementation") Cc: stable@vger.kernel.org (3.10+) Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg --- net/wireless/sme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/sme.c b/net/wireless/sme.c index acdcb4a81817..3546a77033de 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -234,7 +234,6 @@ void cfg80211_conn_work(struct work_struct *work) NULL, 0, NULL, 0, WLAN_STATUS_UNSPECIFIED_FAILURE, false, NULL); - cfg80211_sme_free(wdev); } wdev_unlock(wdev); } @@ -648,6 +647,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid, cfg80211_unhold_bss(bss_from_pub(bss)); cfg80211_put_bss(wdev->wiphy, bss); } + cfg80211_sme_free(wdev); return; } From 792e6aa7a15ea0fb16f8687e93caede1ea9118c7 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 30 Apr 2014 16:14:23 +0300 Subject: [PATCH 576/623] cfg80211: add cfg80211_sched_scan_stopped_rtnl Add locked-version for cfg80211_sched_scan_stopped. This is used for some users that might want to call it when rtnl is already locked. Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart") Cc: stable@vger.kernel.org (3.14+) Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 12 ++++++++++++ net/wireless/scan.c | 12 ++++++++++-- 2 files changed, 22 insertions(+), 2 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f3539a15c411..f856e5a746fa 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3668,6 +3668,18 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy); */ void cfg80211_sched_scan_stopped(struct wiphy *wiphy); +/** + * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped + * + * @wiphy: the wiphy on which the scheduled scan stopped + * + * The driver can call this function to inform cfg80211 that the + * scheduled scan had to be stopped, for whatever reason. The driver + * is then called back via the sched_scan_stop operation when done. + * This function should be called with rtnl locked. + */ +void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy); + /** * cfg80211_inform_bss_width_frame - inform cfg80211 of a received BSS frame * diff --git a/net/wireless/scan.c b/net/wireless/scan.c index 7d09a712cb1f..88f108edfb58 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -284,14 +284,22 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy) } EXPORT_SYMBOL(cfg80211_sched_scan_results); -void cfg80211_sched_scan_stopped(struct wiphy *wiphy) +void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy) { struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); + ASSERT_RTNL(); + trace_cfg80211_sched_scan_stopped(wiphy); - rtnl_lock(); __cfg80211_stop_sched_scan(rdev, true); +} +EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl); + +void cfg80211_sched_scan_stopped(struct wiphy *wiphy) +{ + rtnl_lock(); + cfg80211_sched_scan_stopped_rtnl(wiphy); rtnl_unlock(); } EXPORT_SYMBOL(cfg80211_sched_scan_stopped); From e669ba2d06c6195662601956454ac959892f0762 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 30 Apr 2014 16:14:24 +0300 Subject: [PATCH 577/623] mac80211: fix nested rtnl locking on ieee80211_reconfig ieee80211_reconfig already holds rtnl, so calling cfg80211_sched_scan_stopped results in deadlock. Use the rtnl-version of this function instead. Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart") Cc: stable@vger.kernel.org (3.14+) Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg --- net/mac80211/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 275c94f995f7..3c365837e910 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1780,7 +1780,7 @@ int ieee80211_reconfig(struct ieee80211_local *local) mutex_unlock(&local->mtx); if (sched_scan_stopped) - cfg80211_sched_scan_stopped(local->hw.wiphy); + cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy); /* * If this is for hw restart things are still running. From 7c3d5ab1f35f5475b1a1fbe74143683cfc092d33 Mon Sep 17 00:00:00 2001 From: Vasily Averin Date: Sat, 3 May 2014 03:14:04 +0400 Subject: [PATCH 578/623] ipv4: fix "conntrack zones" support for defrag user check in ip_expire Defrag user check in ip_expire was not updated after adding support for "conntrack zones". This bug manifests as a RFC violation, since the router will send the icmp time exceeeded message when using conntrack zones. Signed-off-by: Vasily Averin Signed-off-by: Pablo Neira Ayuso --- net/ipv4/ip_fragment.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index c10a3ce5cbff..ed32313e307c 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -232,8 +232,9 @@ static void ip_expire(unsigned long arg) * "Fragment Reassembly Timeout" message, per RFC792. */ if (qp->user == IP_DEFRAG_AF_PACKET || - (qp->user == IP_DEFRAG_CONNTRACK_IN && - skb_rtable(head)->rt_type != RTN_LOCAL)) + ((qp->user >= IP_DEFRAG_CONNTRACK_IN) && + (qp->user <= __IP_DEFRAG_CONNTRACK_IN_END) && + (skb_rtable(head)->rt_type != RTN_LOCAL))) goto out_rcu_unlock; From aff09ce303f83bd370772349238482ae422a2341 Mon Sep 17 00:00:00 2001 From: Vasily Averin Date: Mon, 5 May 2014 00:17:48 +0400 Subject: [PATCH 579/623] bridge: superfluous skb->nfct check in br_nf_dev_queue_xmit Currently bridge can silently drop ipv4 fragments. If node have loaded nf_defrag_ipv4 module but have no nf_conntrack_ipv4, br_nf_pre_routing defragments incoming ipv4 fragments but nfct check in br_nf_dev_queue_xmit does not allow re-fragment combined packet back, and therefore it is dropped in br_dev_queue_push_xmit without incrementing of any failcounters It seems the only way to hit the ip_fragment code in the bridge xmit path is to have a fragment list whose reassembled fragments go over the mtu. This only happens if nf_defrag is enabled. Thanks to Florian Westphal for providing feedback to clarify this. Defragmentation ipv4 is required not only in conntracks but at least in TPROXY target and socket match, therefore #ifdef is changed from NF_CONNTRACK_IPV4 to NF_DEFRAG_IPV4 Signed-off-by: Vasily Averin Signed-off-by: Pablo Neira Ayuso --- net/bridge/br_netfilter.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index 80e1b0f60a30..2acf7fa1fec6 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -859,12 +859,12 @@ static unsigned int br_nf_forward_arp(const struct nf_hook_ops *ops, return NF_STOLEN; } -#if IS_ENABLED(CONFIG_NF_CONNTRACK_IPV4) +#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4) static int br_nf_dev_queue_xmit(struct sk_buff *skb) { int ret; - if (skb->nfct != NULL && skb->protocol == htons(ETH_P_IP) && + if (skb->protocol == htons(ETH_P_IP) && skb->len + nf_bridge_mtu_reduction(skb) > skb->dev->mtu && !skb_is_gso(skb)) { if (br_parse_ip_options(skb)) From ef87dbe7614341c2e7bfe8d32fcb7028cc97442c Mon Sep 17 00:00:00 2001 From: Matthew Daley Date: Mon, 28 Apr 2014 19:05:20 +1200 Subject: [PATCH 580/623] floppy: ignore kernel-only members in FDRAWCMD ioctl input Always clear out these floppy_raw_cmd struct members after copying the entire structure from userspace so that the in-kernel version is always valid and never left in an interdeterminate state. Signed-off-by: Matthew Daley Signed-off-by: Linus Torvalds --- drivers/block/floppy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 8f5565bf34cd..12251a688871 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3121,10 +3121,11 @@ loop: return -ENOMEM; *rcmd = ptr; ret = copy_from_user(ptr, param, sizeof(*ptr)); - if (ret) - return -EFAULT; ptr->next = NULL; ptr->buffer_length = 0; + ptr->kernel_data = NULL; + if (ret) + return -EFAULT; param += sizeof(struct floppy_raw_cmd); if (ptr->cmd_count > 33) /* the command may now also take up the space @@ -3140,7 +3141,6 @@ loop: for (i = 0; i < 16; i++) ptr->reply[i] = 0; ptr->resultcode = 0; - ptr->kernel_data = NULL; if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) { if (ptr->length <= 0) From 2145e15e0557a01b9195d1c7199a1b92cb9be81f Mon Sep 17 00:00:00 2001 From: Matthew Daley Date: Mon, 28 Apr 2014 19:05:21 +1200 Subject: [PATCH 581/623] floppy: don't write kernel-only members to FDRAWCMD ioctl output Do not leak kernel-only floppy_raw_cmd structure members to userspace. This includes the linked-list pointer and the pointer to the allocated DMA space. Signed-off-by: Matthew Daley Signed-off-by: Linus Torvalds --- drivers/block/floppy.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 12251a688871..fa9bb742df6e 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3067,7 +3067,10 @@ static int raw_cmd_copyout(int cmd, void __user *param, int ret; while (ptr) { - ret = copy_to_user(param, ptr, sizeof(*ptr)); + struct floppy_raw_cmd cmd = *ptr; + cmd.next = NULL; + cmd.kernel_data = NULL; + ret = copy_to_user(param, &cmd, sizeof(cmd)); if (ret) return -EFAULT; param += sizeof(struct floppy_raw_cmd); From 0624bcaaf06c1fe5aca4e72287a3f13026764d36 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 25 Apr 2014 01:12:01 -0700 Subject: [PATCH 582/623] fix quoting of Ted's name in MAINTAINERS Unpaired quotes really confuse mutt when copy & pasting it into the To: form. Signed-off-by: Christoph Hellwig [ I'm going to remove all silly quotes entirely one day, but that day is not today. So I'll just apply this - Linus ] Signed-off-by: Linus Torvalds --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 106626442124..181f43077a03 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7304,7 +7304,7 @@ F: Documentation/blockdev/ramdisk.txt F: drivers/block/brd.c RANDOM NUMBER DRIVER -M: Theodore Ts'o" +M: "Theodore Ts'o" S: Maintained F: drivers/char/random.c From 55b441be5cd600bf645a01b14900880a09941d4c Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Thu, 1 May 2014 04:46:36 +0400 Subject: [PATCH 583/623] xtensa: ISS: don't depend on CONFIG_TTY Build console support only when CONFIG_TTY is selected. This restores ISS as the default platform for allnoconfig builds. Signed-off-by: Max Filippov Signed-off-by: Chris Zankel --- arch/xtensa/Kconfig | 1 - arch/xtensa/platforms/iss/Makefile | 3 ++- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 17b31982c566..2ca8819979b4 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -243,7 +243,6 @@ choice config XTENSA_PLATFORM_ISS bool "ISS" - depends on TTY select XTENSA_CALIBRATE_CCOUNT select SERIAL_CONSOLE help diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile index d2369b799c50..b3e89291cfba 100644 --- a/arch/xtensa/platforms/iss/Makefile +++ b/arch/xtensa/platforms/iss/Makefile @@ -4,6 +4,7 @@ # "prom monitor" library routines under Linux. # -obj-y = console.o setup.o +obj-y = setup.o +obj-$(CONFIG_TTY) += console.o obj-$(CONFIG_NET) += network.o obj-$(CONFIG_BLK_DEV_SIMDISK) += simdisk.o From 2c4a336e0a3e203fab6aa8d8f7bb70a0ad968a6b Mon Sep 17 00:00:00 2001 From: Andy King Date: Thu, 1 May 2014 15:20:43 -0700 Subject: [PATCH 584/623] vsock: Make transport the proto owner Right now the core vsock module is the owner of the proto family. This means there's nothing preventing the transport module from unloading if there are open sockets, which results in a panic. Fix that by allowing the transport to be the owner, which will refcount it properly. Includes version bump to 1.0.1.0-k Passes checkpatch this time, I swear... Acked-by: Dmitry Torokhov Signed-off-by: Andy King Signed-off-by: David S. Miller --- include/net/af_vsock.h | 6 ++++- net/vmw_vsock/af_vsock.c | 47 +++++++++++++++++++--------------------- 2 files changed, 27 insertions(+), 26 deletions(-) diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index 7d64d3609ec9..428277869400 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -155,7 +155,11 @@ struct vsock_transport { /**** CORE ****/ -int vsock_core_init(const struct vsock_transport *t); +int __vsock_core_init(const struct vsock_transport *t, struct module *owner); +static inline int vsock_core_init(const struct vsock_transport *t) +{ + return __vsock_core_init(t, THIS_MODULE); +} void vsock_core_exit(void); /**** UTILS ****/ diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 5adfd94c5b85..85d232bed87d 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1925,9 +1925,23 @@ static struct miscdevice vsock_device = { .fops = &vsock_device_ops, }; -static int __vsock_core_init(void) +int __vsock_core_init(const struct vsock_transport *t, struct module *owner) { - int err; + int err = mutex_lock_interruptible(&vsock_register_mutex); + + if (err) + return err; + + if (transport) { + err = -EBUSY; + goto err_busy; + } + + /* Transport must be the owner of the protocol so that it can't + * unload while there are open sockets. + */ + vsock_proto.owner = owner; + transport = t; vsock_init_tables(); @@ -1951,36 +1965,19 @@ static int __vsock_core_init(void) goto err_unregister_proto; } + mutex_unlock(&vsock_register_mutex); return 0; err_unregister_proto: proto_unregister(&vsock_proto); err_misc_deregister: misc_deregister(&vsock_device); + transport = NULL; +err_busy: + mutex_unlock(&vsock_register_mutex); return err; } - -int vsock_core_init(const struct vsock_transport *t) -{ - int retval = mutex_lock_interruptible(&vsock_register_mutex); - if (retval) - return retval; - - if (transport) { - retval = -EBUSY; - goto out; - } - - transport = t; - retval = __vsock_core_init(); - if (retval) - transport = NULL; - -out: - mutex_unlock(&vsock_register_mutex); - return retval; -} -EXPORT_SYMBOL_GPL(vsock_core_init); +EXPORT_SYMBOL_GPL(__vsock_core_init); void vsock_core_exit(void) { @@ -2000,5 +1997,5 @@ EXPORT_SYMBOL_GPL(vsock_core_exit); MODULE_AUTHOR("VMware, Inc."); MODULE_DESCRIPTION("VMware Virtual Socket Family"); -MODULE_VERSION("1.0.0.0-k"); +MODULE_VERSION("1.0.1.0-k"); MODULE_LICENSE("GPL v2"); From 9d4619c492c84e4c1e6d7127f1cbf55da04599d0 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 2 May 2014 06:29:21 +0200 Subject: [PATCH 585/623] Altera TSE: ALTERA_TSE should depend on HAS_DMA If NO_DMA=y: drivers/built-in.o: In function `altera_tse_probe': altera_tse_main.c:(.text+0x25ec2e): undefined reference to `dma_set_mask' altera_tse_main.c:(.text+0x25ec78): undefined reference to `dma_supported' altera_tse_main.c:(.text+0x25ecb6): undefined reference to `dma_supported' drivers/built-in.o: In function `sgdma_async_read': altera_sgdma.c:(.text+0x25f620): undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `sgdma_uninitialize': (.text+0x25f678): undefined reference to `dma_unmap_single' drivers/built-in.o: In function `sgdma_uninitialize': (.text+0x25f696): undefined reference to `dma_unmap_single' drivers/built-in.o: In function `sgdma_initialize': (.text+0x25f6f0): undefined reference to `dma_map_single' drivers/built-in.o: In function `sgdma_initialize': (.text+0x25f702): undefined reference to `dma_mapping_error' drivers/built-in.o: In function `sgdma_tx_buffer': (.text+0x25f92a): undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `sgdma_rx_status': (.text+0x25fa24): undefined reference to `dma_sync_single_for_cpu' make[3]: *** [vmlinux] Error 1 Signed-off-by: Geert Uytterhoeven Acked-by: Vince Bridgers Signed-off-by: David S. Miller --- drivers/net/ethernet/altera/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/altera/Kconfig b/drivers/net/ethernet/altera/Kconfig index 80c1ab74a4b8..fdddba51473e 100644 --- a/drivers/net/ethernet/altera/Kconfig +++ b/drivers/net/ethernet/altera/Kconfig @@ -1,5 +1,6 @@ config ALTERA_TSE tristate "Altera Triple-Speed Ethernet MAC support" + depends on HAS_DMA select PHYLIB ---help--- This driver supports the Altera Triple-Speed (TSE) Ethernet MAC. From 9becd707841207652449a8dfd90fe9c476d88546 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 2 May 2014 23:27:00 +0200 Subject: [PATCH 586/623] net: cdc_ncm: fix buffer overflow MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs if we send ZLPs") changed the padding logic for devices with the ZLP flag set. This meant that frames of any size will be sent without additional padding, except for the single byte added if the size is a multiple of the USB packet size. But if the unpadded size is identical to the maximum frame size, and the maximum size is a multiplum of the USB packet size, then this one-byte padding will overflow the buffer. Prevent padding if already at maximum frame size, letting usbnet transmit a ZLP instead in this case. Fixes: 4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs if we send ZLPs") Reported by: Yu-an Shih Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 549dbac710ed..9a2bd11943eb 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -785,7 +785,7 @@ cdc_ncm_fill_tx_frame(struct usbnet *dev, struct sk_buff *skb, __le32 sign) skb_out->len > CDC_NCM_MIN_TX_PKT) memset(skb_put(skb_out, ctx->tx_max - skb_out->len), 0, ctx->tx_max - skb_out->len); - else if ((skb_out->len % dev->maxpacket) == 0) + else if (skb_out->len < ctx->tx_max && (skb_out->len % dev->maxpacket) == 0) *skb_put(skb_out, 1) = 0; /* force short packet */ /* set final frame length */ From 531d9014d5c870fdf493e626c4b4e448273cb616 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Sun, 4 May 2014 17:07:22 +0300 Subject: [PATCH 587/623] net/mlx4_core: Adjust port number in qp_attach wrapper when detaching When using single ported VFs and the VF is using port 2, we need to adjust the port accordingly (change it from 1 to 2). Fixes: 449fc48 ('net/mlx4: Adapt code for N-Port VF') Signed-off-by: Matan Barak Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- .../ethernet/mellanox/mlx4/resource_tracker.c | 23 +++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 3b5f53ef29b2..1c3fdd4a1f7d 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -3733,6 +3733,25 @@ static int qp_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, } } +static int mlx4_adjust_port(struct mlx4_dev *dev, int slave, + u8 *gid, enum mlx4_protocol prot) +{ + int real_port; + + if (prot != MLX4_PROT_ETH) + return 0; + + if (dev->caps.steering_mode == MLX4_STEERING_MODE_B0 || + dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { + real_port = mlx4_slave_convert_port(dev, slave, gid[5]); + if (real_port < 0) + return -EINVAL; + gid[5] = real_port; + } + + return 0; +} + int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, struct mlx4_cmd_mailbox *inbox, @@ -3768,6 +3787,10 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, if (err) goto ex_detach; } else { + err = mlx4_adjust_port(dev, slave, gid, prot); + if (err) + goto ex_put; + err = rem_mcg_res(dev, slave, rqp, gid, prot, type, ®_id); if (err) goto ex_put; From 0254bc8205195c96b47abe33c67f8ccd2f2dad69 Mon Sep 17 00:00:00 2001 From: Matan Barak Date: Sun, 4 May 2014 17:07:23 +0300 Subject: [PATCH 588/623] net/mlx4_core: Fix slave id computation for single port VF The code that deals with computing the slave id based on a given GID gave wrong results when the number of single port VFs wasn't the same for port 1 vs. port 2 and the relevant VF is single ported on port 2. As a result, incoming CM MADs were dispatched to the wrong VF. Fixed that and added documentation to clarify the computation steps. Fixes: 449fc48 ('net/mlx4: Adapt code for N-Port VF') Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/port.c | 35 +++++++++++++---------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c index cfcad26ed40f..b5b3549b0c8d 100644 --- a/drivers/net/ethernet/mellanox/mlx4/port.c +++ b/drivers/net/ethernet/mellanox/mlx4/port.c @@ -1106,6 +1106,9 @@ int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid, } if (found_ix >= 0) { + /* Calculate a slave_gid which is the slave number in the gid + * table and not a globally unique slave number. + */ if (found_ix < MLX4_ROCE_PF_GIDS) slave_gid = 0; else if (found_ix < MLX4_ROCE_PF_GIDS + (vf_gids % num_vfs) * @@ -1118,41 +1121,43 @@ int mlx4_get_slave_from_roce_gid(struct mlx4_dev *dev, int port, u8 *gid, ((vf_gids % num_vfs) * ((vf_gids / num_vfs + 1)))) / (vf_gids / num_vfs)) + vf_gids % num_vfs + 1; + /* Calculate the globally unique slave id */ if (slave_gid) { struct mlx4_active_ports exclusive_ports; struct mlx4_active_ports actv_ports; struct mlx4_slaves_pport slaves_pport_actv; unsigned max_port_p_one; - int num_slaves_before = 1; + int num_vfs_before = 0; + int candidate_slave_gid; + /* Calculate how many VFs are on the previous port, if exists */ for (i = 1; i < port; i++) { bitmap_zero(exclusive_ports.ports, dev->caps.num_ports); - set_bit(i, exclusive_ports.ports); + set_bit(i - 1, exclusive_ports.ports); slaves_pport_actv = mlx4_phys_to_slaves_pport_actv( dev, &exclusive_ports); - num_slaves_before += bitmap_weight( + num_vfs_before += bitmap_weight( slaves_pport_actv.slaves, dev->num_vfs + 1); } - if (slave_gid < num_slaves_before) { - bitmap_zero(exclusive_ports.ports, dev->caps.num_ports); - set_bit(port - 1, exclusive_ports.ports); - slaves_pport_actv = - mlx4_phys_to_slaves_pport_actv( - dev, &exclusive_ports); - slave_gid += bitmap_weight( - slaves_pport_actv.slaves, - dev->num_vfs + 1) - - num_slaves_before; - } - actv_ports = mlx4_get_active_ports(dev, slave_gid); + /* candidate_slave_gid isn't necessarily the correct slave, but + * it has the same number of ports and is assigned to the same + * ports as the real slave we're looking for. On dual port VF, + * slave_gid = [single port VFs on port ] + + * [offset of the current slave from the first dual port VF] + + * 1 (for the PF). + */ + candidate_slave_gid = slave_gid + num_vfs_before; + + actv_ports = mlx4_get_active_ports(dev, candidate_slave_gid); max_port_p_one = find_first_bit( actv_ports.ports, dev->caps.num_ports) + bitmap_weight(actv_ports.ports, dev->caps.num_ports) + 1; + /* Calculate the real slave number */ for (i = 1; i < max_port_p_one; i++) { if (i == port) continue; From f24f790f8eb8bca00c66781b21de2a9ff7cd1c00 Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Sun, 4 May 2014 17:07:24 +0300 Subject: [PATCH 589/623] net/mlx4_core: Load the Eth driver first When running in SRIOV mode, VM that is assigned with a non-provisioned Ethernet VFs get themselves a random mac when the Eth driver starts. In this case, if the IB driver startup code that deals with RoCE runs first, it will use a zero mac as the source mac for the Para-Virtual CM MADs which is buggy. To handle that, we change the order of loading. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index cef267e24f9c..e98c15adb7e2 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -754,10 +754,10 @@ static void mlx4_request_modules(struct mlx4_dev *dev) has_eth_port = true; } - if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)) - request_module_nowait(IB_DRV_NAME); if (has_eth_port) request_module_nowait(EN_DRV_NAME); + if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)) + request_module_nowait(IB_DRV_NAME); } /* From 83d3459a5928f18c9344683e31bc2a7c3c25562a Mon Sep 17 00:00:00 2001 From: Eyal Perry Date: Sun, 4 May 2014 17:07:25 +0300 Subject: [PATCH 590/623] net/mlx4_core: Don't issue PCIe speed/width checks for VFs Carrying out PCI speed/width checks through pcie_get_minimum_link() on VFs yield wrong results, so remove them. Fixes: b912b2f ('net/mlx4_core: Warn if device doesn't have enough PCI bandwidth') Signed-off-by: Eyal Perry Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index e98c15adb7e2..7cf9dadcb471 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -2440,7 +2440,8 @@ slave_start: * No return code for this call, just warn the user in case of PCI * express device capabilities are under-satisfied by the bus. */ - mlx4_check_pcie_caps(dev); + if (!mlx4_is_slave(dev)) + mlx4_check_pcie_caps(dev); /* In master functions, the communication channel must be initialized * after obtaining its address from fw */ From 77e61146c67765deae45faa7db088c64a9fbca00 Mon Sep 17 00:00:00 2001 From: David Ertman Date: Tue, 22 Apr 2014 05:25:53 +0000 Subject: [PATCH 591/623] e1000e: Workaround for dropped packets in Gig/100 speeds on 82579 This is a workaround for a HW erratum on 82579 devices. Erratum is #23 in Intel 6 Series Chipset and Intel C200 Series Chipset specification Update June 2013. Problem: 82579 parts experience packet loss in Gig and 100 speeds when interconnect between PHY and MAC is exiting K1 power saving state. This was previously believed to only affect 1Gig speed, but has been observed at 100Mbs also. Workaround: Disable K1 for 82579 devices at Gig and 100 speeds. Signed-off-by: Dave Ertman Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 31 ++++++++------------- drivers/net/ethernet/intel/e1000e/phy.h | 1 + 2 files changed, 13 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 9866f264f55e..9b736b8625ae 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -2493,51 +2493,44 @@ release: * e1000_k1_gig_workaround_lv - K1 Si workaround * @hw: pointer to the HW structure * - * Workaround to set the K1 beacon duration for 82579 parts + * Workaround to set the K1 beacon duration for 82579 parts in 10Mbps + * Disable K1 in 1000Mbps and 100Mbps **/ static s32 e1000_k1_workaround_lv(struct e1000_hw *hw) { s32 ret_val = 0; u16 status_reg = 0; - u32 mac_reg; - u16 phy_reg; if (hw->mac.type != e1000_pch2lan) return 0; - /* Set K1 beacon duration based on 1Gbps speed or otherwise */ + /* Set K1 beacon duration based on 10Mbs speed */ ret_val = e1e_rphy(hw, HV_M_STATUS, &status_reg); if (ret_val) return ret_val; if ((status_reg & (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) == (HV_M_STATUS_LINK_UP | HV_M_STATUS_AUTONEG_COMPLETE)) { - mac_reg = er32(FEXTNVM4); - mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK; - - ret_val = e1e_rphy(hw, I82579_LPI_CTRL, &phy_reg); - if (ret_val) - return ret_val; - - if (status_reg & HV_M_STATUS_SPEED_1000) { + if (status_reg & + (HV_M_STATUS_SPEED_1000 | HV_M_STATUS_SPEED_100)) { u16 pm_phy_reg; - mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_8USEC; - phy_reg &= ~I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT; - /* LV 1G Packet drop issue wa */ + /* LV 1G/100 Packet drop issue wa */ ret_val = e1e_rphy(hw, HV_PM_CTRL, &pm_phy_reg); if (ret_val) return ret_val; - pm_phy_reg &= ~HV_PM_CTRL_PLL_STOP_IN_K1_GIGA; + pm_phy_reg &= ~HV_PM_CTRL_K1_ENABLE; ret_val = e1e_wphy(hw, HV_PM_CTRL, pm_phy_reg); if (ret_val) return ret_val; } else { + u32 mac_reg; + + mac_reg = er32(FEXTNVM4); + mac_reg &= ~E1000_FEXTNVM4_BEACON_DURATION_MASK; mac_reg |= E1000_FEXTNVM4_BEACON_DURATION_16USEC; - phy_reg |= I82579_LPI_CTRL_FORCE_PLL_LOCK_COUNT; + ew32(FEXTNVM4, mac_reg); } - ew32(FEXTNVM4, mac_reg); - ret_val = e1e_wphy(hw, I82579_LPI_CTRL, phy_reg); } return ret_val; diff --git a/drivers/net/ethernet/intel/e1000e/phy.h b/drivers/net/ethernet/intel/e1000e/phy.h index 3841bccf058c..537d2780b408 100644 --- a/drivers/net/ethernet/intel/e1000e/phy.h +++ b/drivers/net/ethernet/intel/e1000e/phy.h @@ -164,6 +164,7 @@ s32 e1000_get_cable_length_82577(struct e1000_hw *hw); #define HV_M_STATUS_AUTONEG_COMPLETE 0x1000 #define HV_M_STATUS_SPEED_MASK 0x0300 #define HV_M_STATUS_SPEED_1000 0x0200 +#define HV_M_STATUS_SPEED_100 0x0100 #define HV_M_STATUS_LINK_UP 0x0040 #define IGP01E1000_PHY_PCS_INIT_REG 0x00B4 From fbb9ab10a289ff28b70f53af302d119401960a39 Mon Sep 17 00:00:00 2001 From: David Ertman Date: Tue, 22 Apr 2014 05:48:54 +0000 Subject: [PATCH 592/623] e1000e: Expand workaround for 10Mb HD throughput bug In commit 772d05c51c4f4896c120ad418b1e91144a2ac813 "e1000e: slow performance between two 82579 connected via 10Mbit hub", a workaround was put into place to address the overaggressive transmit behavior of 82579 parts when connecting at 10Mbs half-duplex. This same behavior is seen on i217 and i218 parts as well. This patch expands the original workaround to encompass these parts. Signed-off-by: Dave Ertman Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 15 +++++++++++---- drivers/net/ethernet/intel/e1000e/ich8lan.h | 1 + 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 9b736b8625ae..059f1b0112f4 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -1314,14 +1314,17 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) return ret_val; } - /* When connected at 10Mbps half-duplex, 82579 parts are excessively + /* When connected at 10Mbps half-duplex, some parts are excessively * aggressive resulting in many collisions. To avoid this, increase * the IPG and reduce Rx latency in the PHY. */ - if ((hw->mac.type == e1000_pch2lan) && link) { + if (((hw->mac.type == e1000_pch2lan) || + (hw->mac.type == e1000_pch_lpt)) && link) { u32 reg; reg = er32(STATUS); if (!(reg & (E1000_STATUS_FD | E1000_STATUS_SPEED_MASK))) { + u16 emi_addr; + reg = er32(TIPG); reg &= ~E1000_TIPG_IPGT_MASK; reg |= 0xFF; @@ -1332,8 +1335,12 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) if (ret_val) return ret_val; - ret_val = - e1000_write_emi_reg_locked(hw, I82579_RX_CONFIG, 0); + if (hw->mac.type == e1000_pch2lan) + emi_addr = I82579_RX_CONFIG; + else + emi_addr = I217_RX_CONFIG; + + ret_val = e1000_write_emi_reg_locked(hw, emi_addr, 0); hw->phy.ops.release(hw); diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h index bead50f9187b..8fc6c15f31c8 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.h +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h @@ -242,6 +242,7 @@ #define I217_EEE_CAPABILITY 0x8000 /* IEEE MMD Register 3.20 */ #define I217_EEE_ADVERTISEMENT 0x8001 /* IEEE MMD Register 7.60 */ #define I217_EEE_LP_ABILITY 0x8002 /* IEEE MMD Register 7.61 */ +#define I217_RX_CONFIG 0xB20C /* Receive configuration */ #define E1000_EEE_RX_LPI_RCVD 0x0400 /* Tx LP idle received */ #define E1000_EEE_TX_LPI_RCVD 0x0800 /* Rx LP idle received */ From 7142a55c3c1fee89a60aa7b402c834b6b8afcb0a Mon Sep 17 00:00:00 2001 From: David Ertman Date: Thu, 1 May 2014 01:22:26 +0000 Subject: [PATCH 593/623] e1000e: Fix issue with link flap on 82579 Several customers have reported a link flap issue on 82579. The symptoms are random and intermittent link losses when 82579 is connected to specific link partners. Issue has been root caused as interoperability problem between 82579 and at least some Broadcom PHYs in the Energy Efficient Ethernet wake mechanism. To fix the issue, we are disabling the Phase Locked Loop shutdown in 100M Low Power Idle. This solution will cause an increase of power in 100M EEE link. It will cost additional 28mW in this specific mode. Cc: Lukasz Adamczuk Signed-off-by: Dave Ertman Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 11 +++++++++++ drivers/net/ethernet/intel/e1000e/ich8lan.h | 2 ++ 2 files changed, 13 insertions(+) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 059f1b0112f4..e8587b94b138 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -842,6 +842,17 @@ s32 e1000_set_eee_pchlan(struct e1000_hw *hw) } } + if (hw->phy.type == e1000_phy_82579) { + ret_val = e1000_read_emi_reg_locked(hw, I82579_LPI_PLL_SHUT, + &data); + if (ret_val) + goto release; + + data &= ~I82579_LPI_100_PLL_SHUT; + ret_val = e1000_write_emi_reg_locked(hw, I82579_LPI_PLL_SHUT, + data); + } + /* R/Clr IEEE MMD 3.1 bits 11:10 - Tx/Rx LPI Received */ ret_val = e1000_read_emi_reg_locked(hw, pcs_status, &data); if (ret_val) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h index 8fc6c15f31c8..5515126c81c1 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.h +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h @@ -232,12 +232,14 @@ #define I82577_MSE_THRESHOLD 0x0887 /* 82577 Mean Square Error Threshold */ #define I82579_MSE_LINK_DOWN 0x2411 /* MSE count before dropping link */ #define I82579_RX_CONFIG 0x3412 /* Receive configuration */ +#define I82579_LPI_PLL_SHUT 0x4412 /* LPI PLL Shut Enable */ #define I82579_EEE_PCS_STATUS 0x182E /* IEEE MMD Register 3.1 >> 8 */ #define I82579_EEE_CAPABILITY 0x0410 /* IEEE MMD Register 3.20 */ #define I82579_EEE_ADVERTISEMENT 0x040E /* IEEE MMD Register 7.60 */ #define I82579_EEE_LP_ABILITY 0x040F /* IEEE MMD Register 7.61 */ #define I82579_EEE_100_SUPPORTED (1 << 1) /* 100BaseTx EEE */ #define I82579_EEE_1000_SUPPORTED (1 << 2) /* 1000BaseTx EEE */ +#define I82579_LPI_100_PLL_SHUT (1 << 2) /* 100M LPI PLL Shut Enabled */ #define I217_EEE_PCS_STATUS 0x9401 /* IEEE MMD Register 3.1 */ #define I217_EEE_CAPABILITY 0x8000 /* IEEE MMD Register 3.20 */ #define I217_EEE_ADVERTISEMENT 0x8001 /* IEEE MMD Register 7.60 */ From 2c9826243bebeb90a57a7946d4144a2a9a43dc39 Mon Sep 17 00:00:00 2001 From: David Ertman Date: Thu, 1 May 2014 02:19:03 +0000 Subject: [PATCH 594/623] e1000e: Restrict MDIO Slow Mode workaround to relevant parts It has been determined that the workaround of putting the PHY into MDIO slow mode to access the PHY id is not necessary with Lynx Point and newer parts. The issue that necessitated the workaround has been fixed on the newer hardware. We will maintains, as a last ditch attempt, the conversion to MDIO Slow Mode in the failure branch when attempting to access the PHY id so as to cover all contingencies. Signed-off-by: Dave Ertman Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index e8587b94b138..f0bbd4246d71 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -186,7 +186,7 @@ static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw) { u16 phy_reg = 0; u32 phy_id = 0; - s32 ret_val; + s32 ret_val = 0; u16 retry_count; u32 mac_reg = 0; @@ -217,11 +217,13 @@ static bool e1000_phy_is_accessible_pchlan(struct e1000_hw *hw) /* In case the PHY needs to be in mdio slow mode, * set slow mode and try to get the PHY id again. */ - hw->phy.ops.release(hw); - ret_val = e1000_set_mdio_slow_mode_hv(hw); - if (!ret_val) - ret_val = e1000e_get_phy_id(hw); - hw->phy.ops.acquire(hw); + if (hw->mac.type < e1000_pch_lpt) { + hw->phy.ops.release(hw); + ret_val = e1000_set_mdio_slow_mode_hv(hw); + if (!ret_val) + ret_val = e1000e_get_phy_id(hw); + hw->phy.ops.acquire(hw); + } if (ret_val) return false; From e96f2e7c430014eff52c93cabef1ad4f42ed0db1 Mon Sep 17 00:00:00 2001 From: Ying Cai Date: Sun, 4 May 2014 15:20:04 -0700 Subject: [PATCH 595/623] ip_tunnel: Set network header properly for IP_ECN_decapsulate() In ip_tunnel_rcv(), set skb->network_header to inner IP header before IP_ECN_decapsulate(). Without the fix, IP_ECN_decapsulate() takes outer IP header as inner IP header, possibly causing error messages or packet drops. Note that this skb_reset_network_header() call was in this spot when the original feature for checking consistency of ECN bits through tunnels was added in eccc1bb8d4b4 ("tunnel: drop packet if ECN present with not-ECT"). It was only removed from this spot in 3d7b46cd20e3 ("ip_tunnel: push generic protocol handling to ip_tunnel module."). Fixes: 3d7b46cd20e3 ("ip_tunnel: push generic protocol handling to ip_tunnel module.") Reported-by: Neal Cardwell Signed-off-by: Ying Cai Acked-by: Neal Cardwell Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_tunnel.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c index fa5b7519765f..b3f859731c60 100644 --- a/net/ipv4/ip_tunnel.c +++ b/net/ipv4/ip_tunnel.c @@ -442,6 +442,8 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb, tunnel->i_seqno = ntohl(tpi->seq) + 1; } + skb_reset_network_header(skb); + err = IP_ECN_decapsulate(iph, skb); if (unlikely(err)) { if (log_ecn_error) From ccd6d0a9104e9075e57fa539ed6bb622b15284d9 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Sun, 4 May 2014 15:42:58 -0700 Subject: [PATCH 596/623] net: macb: Pass same size to DMA_UNMAP as used for DMA_MAP Just as commit "net: macb: DMA-unmap full rx-buffer" (48330e08fa168395b9fd9f369f06cca1df204361), pass the size that was used for mapping the memory also to the unmap routine to avoid warnings from the DMA_API. Signed-off-by: Soren Brinkmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index ca97005e24b4..18fdcd9d51b3 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -1113,7 +1113,7 @@ static void gem_free_rx_buffers(struct macb *bp) desc = &bp->rx_ring[i]; addr = MACB_BF(RX_WADDR, MACB_BFEXT(RX_WADDR, desc->addr)); - dma_unmap_single(&bp->pdev->dev, addr, skb->len, + dma_unmap_single(&bp->pdev->dev, addr, bp->rx_buffer_size, DMA_FROM_DEVICE); dev_kfree_skb_any(skb); skb = NULL; From 6a027b705fb6d2214647a638b44ea91ee6ce7e4c Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Sun, 4 May 2014 15:42:59 -0700 Subject: [PATCH 597/623] net: macb: Clear interrupt flags A few interrupt flags were not cleared in the ISR, resulting in a sytem trapped in the ISR in cases one of those interrupts occurred. Clear all flags to avoid such situations. Signed-off-by: Soren Brinkmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 18fdcd9d51b3..e38fe39d9589 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -951,6 +951,10 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) if (unlikely(status & (MACB_TX_ERR_FLAGS))) { macb_writel(bp, IDR, MACB_TX_INT_FLAGS); schedule_work(&bp->tx_error_task); + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_TX_ERR_FLAGS); + break; } @@ -968,6 +972,9 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) bp->hw_stats.gem.rx_overruns++; else bp->hw_stats.macb.rx_overruns++; + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_BIT(ISR_ROVR)); } if (status & MACB_BIT(HRESP)) { @@ -977,6 +984,9 @@ static irqreturn_t macb_interrupt(int irq, void *dev_id) * (work queue?) */ netdev_err(dev, "DMA bus error: HRESP not OK\n"); + + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_BIT(HRESP)); } status = macb_readl(bp, ISR); From 02f7a34f34e30ee6fd02e01201ae130003e516ab Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Sun, 4 May 2014 15:43:00 -0700 Subject: [PATCH 598/623] net: macb: Re-enable RX interrupt only when RX is done When data is received during the driver processing received data the NAPI is re-scheduled. In that case the RX interrupt should not be re-enabled. Signed-off-by: Soren Brinkmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index e38fe39d9589..3f4b8ee0b0e7 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -891,16 +891,15 @@ static int macb_poll(struct napi_struct *napi, int budget) if (work_done < budget) { napi_complete(napi); - /* - * We've done what we can to clean the buffers. Make sure we - * get notified when new packets arrive. - */ - macb_writel(bp, IER, MACB_RX_INT_FLAGS); - /* Packets received while interrupts were disabled */ status = macb_readl(bp, RSR); - if (unlikely(status)) + if (unlikely(status)) { + if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) + macb_writel(bp, ISR, MACB_BIT(RCOMP)); napi_reschedule(napi); + } else { + macb_writel(bp, IER, MACB_RX_INT_FLAGS); + } } /* TODO: Handle errors */ From 504ad98df3a6b027ce997ca8f620e949cafb151f Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Sun, 4 May 2014 15:43:01 -0700 Subject: [PATCH 599/623] net: macb: Remove 'unlikely' optimization Coverage data suggests that the unlikely case of receiving data while the receive handler is running may not be that unlikely. Coverage data after running iperf for a while: 91320: 891: work_done = bp->macbgem_ops.mog_rx(bp, budget); 91320: 892: if (work_done < budget) { 2362: 893: napi_complete(napi); -: 894: -: 895: /* Packets received while interrupts were disabled */ 4724: 896: status = macb_readl(bp, RSR); 2362: 897: if (unlikely(status)) { 762: 898: if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) 762: 899: macb_writel(bp, ISR, MACB_BIT(RCOMP)); -: 900: napi_reschedule(napi); -: 901: } else { 1600: 902: macb_writel(bp, IER, MACB_RX_INT_FLAGS); -: 903: } -: 904: } Signed-off-by: Soren Brinkmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 3f4b8ee0b0e7..3e13aa31548a 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -893,7 +893,7 @@ static int macb_poll(struct napi_struct *napi, int budget) /* Packets received while interrupts were disabled */ status = macb_readl(bp, RSR); - if (unlikely(status)) { + if (status) { if (bp->caps & MACB_CAPS_ISR_CLEAR_ON_WRITE) macb_writel(bp, ISR, MACB_BIT(RCOMP)); napi_reschedule(napi); From c8ea5a22bd3b27d68ec2f95483ce8bfe7f114933 Mon Sep 17 00:00:00 2001 From: Soren Brinkmann Date: Sun, 4 May 2014 15:43:02 -0700 Subject: [PATCH 600/623] net: macb: Fix race between HW and driver Under "heavy" RX load, the driver cannot handle the descriptors fast enough. In detail, when a descriptor is consumed, its used flag is cleared and once the RX budget is consumed all descriptors with a cleared used flag are prepared to receive more data. Under load though, the HW may constantly receive more data and use those descriptors with a cleared used flag before they are actually prepared for next usage. The head and tail pointers into the RX-ring should always be valid and we can omit clearing and checking of the used flag. Signed-off-by: Soren Brinkmann Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 3e13aa31548a..e9daa072ebb4 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -599,25 +599,16 @@ static void gem_rx_refill(struct macb *bp) { unsigned int entry; struct sk_buff *skb; - struct macb_dma_desc *desc; dma_addr_t paddr; while (CIRC_SPACE(bp->rx_prepared_head, bp->rx_tail, RX_RING_SIZE) > 0) { - u32 addr, ctrl; - entry = macb_rx_ring_wrap(bp->rx_prepared_head); - desc = &bp->rx_ring[entry]; /* Make hw descriptor updates visible to CPU */ rmb(); - addr = desc->addr; - ctrl = desc->ctrl; bp->rx_prepared_head++; - if ((addr & MACB_BIT(RX_USED))) - continue; - if (bp->rx_skbuff[entry] == NULL) { /* allocate sk_buff for this free entry in ring */ skb = netdev_alloc_skb(bp->dev, bp->rx_buffer_size); @@ -698,7 +689,6 @@ static int gem_rx(struct macb *bp, int budget) if (!(addr & MACB_BIT(RX_USED))) break; - desc->addr &= ~MACB_BIT(RX_USED); bp->rx_tail++; count++; From 4f4178f3bb1f470d7fb863ec531e08e20a0fd51c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Sat, 3 May 2014 16:12:47 +0200 Subject: [PATCH 601/623] net: cdc_mbim: __vlan_find_dev_deep need rcu_read_lock MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes this warning introduced by commit 5b8f15f78e6f ("net: cdc_mbim: handle IPv6 Neigbor Solicitations"): =============================== [ INFO: suspicious RCU usage. ] 3.15.0-rc3 #213 Tainted: G W O ------------------------------- net/8021q/vlan_core.c:69 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 1 no locks held by ksoftirqd/0/3. stack backtrace: CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G W O 3.15.0-rc3 #213 Hardware name: LENOVO 2776LEG/2776LEG, BIOS 6EET55WW (3.15 ) 12/19/2011 0000000000000001 ffff880232533bf0 ffffffff813a5ee6 0000000000000006 ffff880232530090 ffff880232533c20 ffffffff81076b94 0000000000000081 0000000000000000 ffff8802085ac000 ffff88007fc8ea00 ffff880232533c50 Call Trace: [] dump_stack+0x4e/0x68 [] lockdep_rcu_suspicious+0xfa/0x103 [] __vlan_find_dev_deep+0x54/0x94 [] cdc_mbim_rx_fixup+0x379/0x66a [cdc_mbim] [] ? _raw_spin_unlock_irqrestore+0x3a/0x49 [] ? trace_hardirqs_on_caller+0x192/0x1a1 [] usbnet_bh+0x59/0x287 [usbnet] [] tasklet_action+0xbb/0xcd [] __do_softirq+0x14c/0x30d [] run_ksoftirqd+0x1f/0x50 [] smpboot_thread_fn+0x172/0x18e [] ? SyS_setgroups+0xdf/0xdf [] kthread+0xb5/0xbd [] ? __wait_for_common+0x13b/0x170 [] ? __kthread_parkme+0x5c/0x5c [] ret_from_fork+0x7c/0xb0 [] ? __kthread_parkme+0x5c/0x5c Fixes: 5b8f15f78e6f ("net: cdc_mbim: handle IPv6 Neigbor Solicitations") Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_mbim.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index c9f3281506af..13f7705fd679 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -204,17 +204,23 @@ static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci) return; /* need to send the NA on the VLAN dev, if any */ - if (tci) + rcu_read_lock(); + if (tci) { netdev = __vlan_find_dev_deep(dev->net, htons(ETH_P_8021Q), tci); - else + if (!netdev) { + rcu_read_unlock(); + return; + } + } else { netdev = dev->net; - if (!netdev) - return; + } + dev_hold(netdev); + rcu_read_unlock(); in6_dev = in6_dev_get(netdev); if (!in6_dev) - return; + goto out; is_router = !!in6_dev->cnf.forwarding; in6_dev_put(in6_dev); @@ -224,6 +230,8 @@ static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci) true /* solicited */, false /* override */, true /* inc_opt */); +out: + dev_put(netdev); } static bool is_neigh_solicit(u8 *buf, size_t len) From ca6c5d4ad216d5942ae544bbf02503041bd802aa Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Sun, 4 May 2014 23:24:31 +0200 Subject: [PATCH 602/623] net: ipv4: ip_forward: fix inverted local_df test local_df means 'ignore DF bit if set', so if its set we're allowed to perform ip fragmentation. This wasn't noticed earlier because the output path also drops such skbs (and emits needed icmp error) and because netfilter ip defrag did not set local_df until couple of days ago. Only difference is that DF-packets-larger-than MTU now discarded earlier (f.e. we avoid pointless netfilter postrouting trip). While at it, drop the repeated test ip_exceeds_mtu, checking it once is enough... Fixes: fe6cc55f3a9 ("net: ip, ipv6: handle gso skbs in forwarding path") Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- net/ipv4/ip_forward.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index be8abe73bb9f..c29ae8371e44 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c @@ -42,12 +42,12 @@ static bool ip_may_fragment(const struct sk_buff *skb) { return unlikely((ip_hdr(skb)->frag_off & htons(IP_DF)) == 0) || - !skb->local_df; + skb->local_df; } static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) { - if (skb->len <= mtu || skb->local_df) + if (skb->len <= mtu) return false; if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) From 418a31561d594a2b636c1e2fa94ecd9e1245abb1 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 5 May 2014 00:03:34 +0200 Subject: [PATCH 603/623] net: ipv6: send pkttoobig immediately if orig frag size > mtu If conntrack defragments incoming ipv6 frags it stores largest original frag size in ip6cb and sets ->local_df. We must thus first test the largest original frag size vs. mtu, and not vice versa. Without this patch PKTTOOBIG is still generated in ip6_fragment() later in the stack, but 1) IPSTATS_MIB_INTOOBIGERRORS won't increment 2) packet did (needlessly) traverse netfilter postrouting hook. Fixes: fe6cc55f3a9 ("net: ip, ipv6: handle gso skbs in forwarding path") Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- net/ipv6/ip6_output.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 40e7581374f7..31a38bde69ef 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -344,12 +344,16 @@ static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst) static bool ip6_pkt_too_big(const struct sk_buff *skb, unsigned int mtu) { - if (skb->len <= mtu || skb->local_df) + if (skb->len <= mtu) return false; + /* ipv6 conntrack defrag sets max_frag_size + local_df */ if (IP6CB(skb)->frag_max_size && IP6CB(skb)->frag_max_size > mtu) return true; + if (skb->local_df) + return false; + if (skb_is_gso(skb) && skb_gso_network_seglen(skb) <= mtu) return false; From c7ba65d7b64984ff371cb5630b36af23506c50d5 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 5 May 2014 15:00:43 +0200 Subject: [PATCH 604/623] net: ip: push gso skb forwarding handling down the stack Doing the segmentation in the forward path has one major drawback: When using virtio, we may process gso udp packets coming from host network stack. In that case, netfilter POSTROUTING will see one packet with udp header followed by multiple ip fragments. Delay the segmentation and do it after POSTROUTING invocation to avoid this. Fixes: fe6cc55f3a9 ("net: ip, ipv6: handle gso skbs in forwarding path") Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- net/ipv4/ip_forward.c | 50 ------------------------------------------ net/ipv4/ip_output.c | 51 ++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 48 insertions(+), 53 deletions(-) diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index c29ae8371e44..6f111e48e11c 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c @@ -56,53 +56,6 @@ static bool ip_exceeds_mtu(const struct sk_buff *skb, unsigned int mtu) return true; } -static bool ip_gso_exceeds_dst_mtu(const struct sk_buff *skb) -{ - unsigned int mtu; - - if (skb->local_df || !skb_is_gso(skb)) - return false; - - mtu = ip_dst_mtu_maybe_forward(skb_dst(skb), true); - - /* if seglen > mtu, do software segmentation for IP fragmentation on - * output. DF bit cannot be set since ip_forward would have sent - * icmp error. - */ - return skb_gso_network_seglen(skb) > mtu; -} - -/* called if GSO skb needs to be fragmented on forward */ -static int ip_forward_finish_gso(struct sk_buff *skb) -{ - struct dst_entry *dst = skb_dst(skb); - netdev_features_t features; - struct sk_buff *segs; - int ret = 0; - - features = netif_skb_dev_features(skb, dst->dev); - segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK); - if (IS_ERR(segs)) { - kfree_skb(skb); - return -ENOMEM; - } - - consume_skb(skb); - - do { - struct sk_buff *nskb = segs->next; - int err; - - segs->next = NULL; - err = dst_output(segs); - - if (err && ret == 0) - ret = err; - segs = nskb; - } while (segs); - - return ret; -} static int ip_forward_finish(struct sk_buff *skb) { @@ -114,9 +67,6 @@ static int ip_forward_finish(struct sk_buff *skb) if (unlikely(opt->optlen)) ip_forward_options(skb); - if (ip_gso_exceeds_dst_mtu(skb)) - return ip_forward_finish_gso(skb); - return dst_output(skb); } diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 1cbeba5edff9..a52f50187b54 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -211,6 +211,48 @@ static inline int ip_finish_output2(struct sk_buff *skb) return -EINVAL; } +static int ip_finish_output_gso(struct sk_buff *skb) +{ + netdev_features_t features; + struct sk_buff *segs; + int ret = 0; + + /* common case: locally created skb or seglen is <= mtu */ + if (((IPCB(skb)->flags & IPSKB_FORWARDED) == 0) || + skb_gso_network_seglen(skb) <= ip_skb_dst_mtu(skb)) + return ip_finish_output2(skb); + + /* Slowpath - GSO segment length is exceeding the dst MTU. + * + * This can happen in two cases: + * 1) TCP GRO packet, DF bit not set + * 2) skb arrived via virtio-net, we thus get TSO/GSO skbs directly + * from host network stack. + */ + features = netif_skb_features(skb); + segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK); + if (IS_ERR(segs)) { + kfree_skb(skb); + return -ENOMEM; + } + + consume_skb(skb); + + do { + struct sk_buff *nskb = segs->next; + int err; + + segs->next = NULL; + err = ip_fragment(segs, ip_finish_output2); + + if (err && ret == 0) + ret = err; + segs = nskb; + } while (segs); + + return ret; +} + static int ip_finish_output(struct sk_buff *skb) { #if defined(CONFIG_NETFILTER) && defined(CONFIG_XFRM) @@ -220,10 +262,13 @@ static int ip_finish_output(struct sk_buff *skb) return dst_output(skb); } #endif - if (skb->len > ip_skb_dst_mtu(skb) && !skb_is_gso(skb)) + if (skb_is_gso(skb)) + return ip_finish_output_gso(skb); + + if (skb->len > ip_skb_dst_mtu(skb)) return ip_fragment(skb, ip_finish_output2); - else - return ip_finish_output2(skb); + + return ip_finish_output2(skb); } int ip_mc_output(struct sock *sk, struct sk_buff *skb) From c1e756bfcbcac838a86a23f3e4501b556a961e3c Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 5 May 2014 15:00:44 +0200 Subject: [PATCH 605/623] Revert "net: core: introduce netif_skb_dev_features" This reverts commit d206940319c41df4299db75ed56142177bb2e5f6, there are no more callers. Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- include/linux/netdevice.h | 7 +------ net/core/dev.c | 22 ++++++++++------------ 2 files changed, 11 insertions(+), 18 deletions(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 7ed3a3aa6604..20e99efb1ca6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3180,12 +3180,7 @@ void netdev_change_features(struct net_device *dev); void netif_stacked_transfer_operstate(const struct net_device *rootdev, struct net_device *dev); -netdev_features_t netif_skb_dev_features(struct sk_buff *skb, - const struct net_device *dev); -static inline netdev_features_t netif_skb_features(struct sk_buff *skb) -{ - return netif_skb_dev_features(skb, skb->dev); -} +netdev_features_t netif_skb_features(struct sk_buff *skb); static inline bool net_gso_ok(netdev_features_t features, int gso_type) { diff --git a/net/core/dev.c b/net/core/dev.c index d2c8a06b3a98..c619b8641337 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2418,7 +2418,7 @@ EXPORT_SYMBOL(netdev_rx_csum_fault); * 2. No high memory really exists on this machine. */ -static int illegal_highdma(const struct net_device *dev, struct sk_buff *skb) +static int illegal_highdma(struct net_device *dev, struct sk_buff *skb) { #ifdef CONFIG_HIGHMEM int i; @@ -2493,38 +2493,36 @@ static int dev_gso_segment(struct sk_buff *skb, netdev_features_t features) } static netdev_features_t harmonize_features(struct sk_buff *skb, - const struct net_device *dev, - netdev_features_t features) + netdev_features_t features) { int tmp; if (skb->ip_summed != CHECKSUM_NONE && !can_checksum_protocol(features, skb_network_protocol(skb, &tmp))) { features &= ~NETIF_F_ALL_CSUM; - } else if (illegal_highdma(dev, skb)) { + } else if (illegal_highdma(skb->dev, skb)) { features &= ~NETIF_F_SG; } return features; } -netdev_features_t netif_skb_dev_features(struct sk_buff *skb, - const struct net_device *dev) +netdev_features_t netif_skb_features(struct sk_buff *skb) { __be16 protocol = skb->protocol; - netdev_features_t features = dev->features; + netdev_features_t features = skb->dev->features; - if (skb_shinfo(skb)->gso_segs > dev->gso_max_segs) + if (skb_shinfo(skb)->gso_segs > skb->dev->gso_max_segs) features &= ~NETIF_F_GSO_MASK; if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) { struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; protocol = veh->h_vlan_encapsulated_proto; } else if (!vlan_tx_tag_present(skb)) { - return harmonize_features(skb, dev, features); + return harmonize_features(skb, features); } - features &= (dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX | + features &= (skb->dev->vlan_features | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX); if (protocol == htons(ETH_P_8021Q) || protocol == htons(ETH_P_8021AD)) @@ -2532,9 +2530,9 @@ netdev_features_t netif_skb_dev_features(struct sk_buff *skb, NETIF_F_GEN_CSUM | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; - return harmonize_features(skb, dev, features); + return harmonize_features(skb, features); } -EXPORT_SYMBOL(netif_skb_dev_features); +EXPORT_SYMBOL(netif_skb_features); int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev, struct netdev_queue *txq) From 76a691d0ab71a244f7582a5b0387728befbdb52f Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Mon, 5 May 2014 14:51:47 -0400 Subject: [PATCH 606/623] jme: Fix DMA unmap warning The jme driver forgot to check the return status from pci_map_page in its tx path, causing a dma api warning on unmap. Easy fix, just do the check and augment the tx path to tell the stack that the driver is busy so we re-queue the frame. Signed-off-by: Neil Horman CC: Guo-Fu Tseng CC: "David S. Miller" Signed-off-by: David S. Miller --- drivers/net/ethernet/jme.c | 53 +++++++++++++++++++++++++++++++++----- 1 file changed, 47 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c index b0c6050479eb..6e664d9038d6 100644 --- a/drivers/net/ethernet/jme.c +++ b/drivers/net/ethernet/jme.c @@ -1988,7 +1988,7 @@ jme_alloc_txdesc(struct jme_adapter *jme, return idx; } -static void +static int jme_fill_tx_map(struct pci_dev *pdev, struct txdesc *txdesc, struct jme_buffer_info *txbi, @@ -2005,6 +2005,9 @@ jme_fill_tx_map(struct pci_dev *pdev, len, PCI_DMA_TODEVICE); + if (unlikely(pci_dma_mapping_error(pdev, dmaaddr))) + return -EINVAL; + pci_dma_sync_single_for_device(pdev, dmaaddr, len, @@ -2021,9 +2024,30 @@ jme_fill_tx_map(struct pci_dev *pdev, txbi->mapping = dmaaddr; txbi->len = len; + return 0; } -static void +static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int endidx) +{ + struct jme_ring *txring = &(jme->txring[0]); + struct jme_buffer_info *txbi = txring->bufinf, *ctxbi; + int mask = jme->tx_ring_mask; + int j; + + for (j = startidx ; j < endidx ; ++j) { + ctxbi = txbi + ((startidx + j + 2) & (mask)); + pci_unmap_page(jme->pdev, + ctxbi->mapping, + ctxbi->len, + PCI_DMA_TODEVICE); + + ctxbi->mapping = 0; + ctxbi->len = 0; + } + +} + +static int jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) { struct jme_ring *txring = &(jme->txring[0]); @@ -2034,25 +2058,37 @@ jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx) int mask = jme->tx_ring_mask; const struct skb_frag_struct *frag; u32 len; + int ret = 0; for (i = 0 ; i < nr_frags ; ++i) { frag = &skb_shinfo(skb)->frags[i]; ctxdesc = txdesc + ((idx + i + 2) & (mask)); ctxbi = txbi + ((idx + i + 2) & (mask)); - jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, + ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, skb_frag_page(frag), frag->page_offset, skb_frag_size(frag), hidma); + if (ret) { + jme_drop_tx_map(jme, idx, idx+i); + goto out; + } + } len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len; ctxdesc = txdesc + ((idx + 1) & (mask)); ctxbi = txbi + ((idx + 1) & (mask)); - jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), + ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data), offset_in_page(skb->data), len, hidma); + if (ret) + jme_drop_tx_map(jme, idx, idx+i); + +out: + return ret; } + static int jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags) { @@ -2131,6 +2167,7 @@ jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) struct txdesc *txdesc; struct jme_buffer_info *txbi; u8 flags; + int ret = 0; txdesc = (struct txdesc *)txring->desc + idx; txbi = txring->bufinf + idx; @@ -2155,7 +2192,10 @@ jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx) if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags)) jme_tx_csum(jme, skb, &flags); jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags); - jme_map_tx_skb(jme, skb, idx); + ret = jme_map_tx_skb(jme, skb, idx); + if (ret) + return ret; + txdesc->desc1.flags = flags; /* * Set tx buffer info after telling NIC to send @@ -2228,7 +2268,8 @@ jme_start_xmit(struct sk_buff *skb, struct net_device *netdev) return NETDEV_TX_BUSY; } - jme_fill_tx_desc(jme, skb, idx); + if (jme_fill_tx_desc(jme, skb, idx)) + return NETDEV_TX_BUSY; jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0 | From d5d2bf3eabb34cc8eaf54db37fdc43f04267985a Mon Sep 17 00:00:00 2001 From: Manish Chopra Date: Tue, 6 May 2014 03:46:48 -0400 Subject: [PATCH 607/623] qlcnic: Fix panic while dumping TX queues on TX timeout o In case of non-multi TX queue mode driver does not initialize "crb_intr_mask" pointer and driver was accessing that un-initialized pointer while dumping TX queue. So dump "crb_intr_mask" only when it is initilaized. Signed-off-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index 0bc914859e38..be789513774c 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -2943,9 +2943,13 @@ static void qlcnic_dump_tx_rings(struct qlcnic_adapter *adapter) tx_ring->tx_stats.xmit_called, tx_ring->tx_stats.xmit_on, tx_ring->tx_stats.xmit_off); + + if (tx_ring->crb_intr_mask) + netdev_info(netdev, "crb_intr_mask=%d\n", + readl(tx_ring->crb_intr_mask)); + netdev_info(netdev, - "crb_intr_mask=%d, hw_producer=%d, sw_producer=%d sw_consumer=%d, hw_consumer=%d\n", - readl(tx_ring->crb_intr_mask), + "hw_producer=%d, sw_producer=%d sw_consumer=%d, hw_consumer=%d\n", readl(tx_ring->crb_cmd_producer), tx_ring->producer, tx_ring->sw_consumer, le32_to_cpu(*(tx_ring->hw_consumer))); From 84d7ad2c3b8a80888d9a483388ccbd5e5f07438f Mon Sep 17 00:00:00 2001 From: Shahed Shaikh Date: Tue, 6 May 2014 03:46:49 -0400 Subject: [PATCH 608/623] qlcnic: Set real_num_{tx|rx}_queues properly Do not set netdev->real_num_tx_queues directly, let netif_set_real_num_tx_queues() take care of it. Do not overwrite netdev->num_tx_queues everytime when driver changes its Tx ring size through ethtool -L and also notify stack to update number of Rx queues. Signed-off-by: Shahed Shaikh Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 16 ------ .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 49 ++++++++++++++++++- 2 files changed, 47 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h index 7b52a88923ef..f785d01c7d12 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h @@ -1719,22 +1719,6 @@ static inline u32 qlcnic_tx_avail(struct qlcnic_host_tx_ring *tx_ring) tx_ring->producer; } -static inline int qlcnic_set_real_num_queues(struct qlcnic_adapter *adapter, - struct net_device *netdev) -{ - int err; - - netdev->num_tx_queues = adapter->drv_tx_rings; - netdev->real_num_tx_queues = adapter->drv_tx_rings; - - err = netif_set_real_num_tx_queues(netdev, adapter->drv_tx_rings); - if (err) - netdev_err(netdev, "failed to set %d Tx queues\n", - adapter->drv_tx_rings); - - return err; -} - struct qlcnic_nic_template { int (*config_bridged_mode) (struct qlcnic_adapter *, u32); int (*config_led) (struct qlcnic_adapter *, u32, u32); diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index be789513774c..7e55e88a81bf 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -2206,6 +2206,31 @@ static void qlcnic_82xx_set_mac_filter_count(struct qlcnic_adapter *adapter) ahw->max_uc_count = count; } +static int qlcnic_set_real_num_queues(struct qlcnic_adapter *adapter, + u8 tx_queues, u8 rx_queues) +{ + struct net_device *netdev = adapter->netdev; + int err = 0; + + if (tx_queues) { + err = netif_set_real_num_tx_queues(netdev, tx_queues); + if (err) { + netdev_err(netdev, "failed to set %d Tx queues\n", + tx_queues); + return err; + } + } + + if (rx_queues) { + err = netif_set_real_num_rx_queues(netdev, rx_queues); + if (err) + netdev_err(netdev, "failed to set %d Rx queues\n", + rx_queues); + } + + return err; +} + int qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev, int pci_using_dac) @@ -2269,7 +2294,8 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev, netdev->priv_flags |= IFF_UNICAST_FLT; netdev->irq = adapter->msix_entries[0].vector; - err = qlcnic_set_real_num_queues(adapter, netdev); + err = qlcnic_set_real_num_queues(adapter, adapter->drv_tx_rings, + adapter->drv_sds_rings); if (err) return err; @@ -3982,12 +4008,21 @@ int qlcnic_validate_rings(struct qlcnic_adapter *adapter, __u32 ring_cnt, int qlcnic_setup_rings(struct qlcnic_adapter *adapter) { struct net_device *netdev = adapter->netdev; + u8 tx_rings, rx_rings; int err; if (test_bit(__QLCNIC_RESETTING, &adapter->state)) return -EBUSY; + tx_rings = adapter->drv_tss_rings; + rx_rings = adapter->drv_rss_rings; + netif_device_detach(netdev); + + err = qlcnic_set_real_num_queues(adapter, tx_rings, rx_rings); + if (err) + goto done; + if (netif_running(netdev)) __qlcnic_down(adapter, netdev); @@ -4007,7 +4042,17 @@ int qlcnic_setup_rings(struct qlcnic_adapter *adapter) return err; } - netif_set_real_num_tx_queues(netdev, adapter->drv_tx_rings); + /* Check if we need to update real_num_{tx|rx}_queues because + * qlcnic_setup_intr() may change Tx/Rx rings size + */ + if ((tx_rings != adapter->drv_tx_rings) || + (rx_rings != adapter->drv_sds_rings)) { + err = qlcnic_set_real_num_queues(adapter, + adapter->drv_tx_rings, + adapter->drv_sds_rings); + if (err) + goto done; + } if (qlcnic_83xx_check(adapter)) { qlcnic_83xx_initialize_nic(adapter, 1); From aeefa1ecfc799b0ea2c4979617f14cecd5cccbfd Mon Sep 17 00:00:00 2001 From: Sergey Popovich Date: Tue, 6 May 2014 18:23:08 +0300 Subject: [PATCH 609/623] ipv4: fib_semantics: increment fib_info_cnt after fib_info allocation Increment fib_info_cnt in fib_create_info() right after successfuly alllocating fib_info structure, overwise fib_metrics allocation failure leads to fib_info_cnt incorrectly decremented in free_fib_info(), called on error path from fib_create_info(). Signed-off-by: Sergey Popovich Signed-off-by: David S. Miller --- net/ipv4/fib_semantics.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index 8a043f03c88e..b10cd43a4722 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -821,13 +821,13 @@ struct fib_info *fib_create_info(struct fib_config *cfg) fi = kzalloc(sizeof(*fi)+nhs*sizeof(struct fib_nh), GFP_KERNEL); if (fi == NULL) goto failure; + fib_info_cnt++; if (cfg->fc_mx) { fi->fib_metrics = kzalloc(sizeof(u32) * RTAX_MAX, GFP_KERNEL); if (!fi->fib_metrics) goto failure; } else fi->fib_metrics = (u32 *) dst_default_metrics; - fib_info_cnt++; fi->fib_net = hold_net(net); fi->fib_protocol = cfg->fc_protocol; From 23a456f05353035d1a2b3f1b9a92707acdc036e0 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 6 May 2014 18:52:16 +0200 Subject: [PATCH 610/623] net: mdio: of_mdiobus_register(): fall back to mdiobus_register() for !CONFIG_OF If CONFIG_OF is not set, make of_mdiobus_register() call mdiobus_register() instead of returning -ENOSYS. This way, we can just call of_mdiobus_register() from all DT-enabled drivers to handle the compat cases. Signed-off-by: Daniel Mack Suggested-by: Florian Fainelli Acked-by: Florian Fainelli Acked-by: Mugunthan V N Signed-off-by: David S. Miller --- include/linux/of_mdio.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h index 6fe8464ed767..881a7c3571f4 100644 --- a/include/linux/of_mdio.h +++ b/include/linux/of_mdio.h @@ -31,7 +31,12 @@ extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); #else /* CONFIG_OF */ static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) { - return -ENOSYS; + /* + * Fall back to the non-DT function to register a bus. + * This way, we don't have to keep compat bits around in drivers. + */ + + return mdiobus_register(mdio); } static inline struct phy_device *of_phy_find_device(struct device_node *phy_np) From a8951d5814e1373807a94f79f7ccec7041325470 Mon Sep 17 00:00:00 2001 From: Sergey Popovich Date: Thu, 8 May 2014 16:22:35 +0300 Subject: [PATCH 611/623] netfilter: Fix potential use after free in ip6_route_me_harder() Dst is released one line before we access it again with dst->error. Fixes: 58e35d147128 netfilter: ipv6: propagate routing errors from ip6_route_me_harder() Signed-off-by: Sergey Popovich Signed-off-by: Pablo Neira Ayuso --- net/ipv6/netfilter.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c index 95f3f1da0d7f..d38e6a8d8b9f 100644 --- a/net/ipv6/netfilter.c +++ b/net/ipv6/netfilter.c @@ -30,13 +30,15 @@ int ip6_route_me_harder(struct sk_buff *skb) .daddr = iph->daddr, .saddr = iph->saddr, }; + int err; dst = ip6_route_output(net, skb->sk, &fl6); - if (dst->error) { + err = dst->error; + if (err) { IP6_INC_STATS(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES); LIMIT_NETDEBUG(KERN_DEBUG "ip6_route_me_harder: No more route.\n"); dst_release(dst); - return dst->error; + return err; } /* Drop old route. */ From c9d8f1a64225dfcc2f721d73a5984a2444920744 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Tue, 6 May 2014 11:02:49 -0700 Subject: [PATCH 612/623] ipv4: move local_port_range out of CONFIG_SYSCTL When CONFIG_SYSCTL is not set, ip_local_port_range should still work, just that no one can change it. Therefore we should move it out of sysctl_inet.c. Also, rename it to ->ip_local_ports instead. Cc: David S. Miller Cc: Francois Romieu Reported-by: Stefan de Konink Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/net/netns/ipv4.h | 2 +- net/ipv4/af_inet.c | 28 ++++++++++++++++++++++++++++ net/ipv4/inet_connection_sock.c | 8 ++++---- net/ipv4/ping.c | 4 ++-- net/ipv4/sysctl_net_ipv4.c | 29 +++++++++++------------------ 5 files changed, 46 insertions(+), 25 deletions(-) diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 80f500a29498..3d95cd475316 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -66,7 +66,7 @@ struct netns_ipv4 { int sysctl_icmp_ratemask; int sysctl_icmp_errors_use_inbound_ifaddr; - struct local_ports sysctl_local_ports; + struct local_ports ip_local_ports; int sysctl_tcp_ecn; int sysctl_ip_no_pmtu_disc; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 8c54870db792..cccc8e487c7e 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1650,6 +1650,31 @@ static int __init init_ipv4_mibs(void) return register_pernet_subsys(&ipv4_mib_ops); } +static __net_init int inet_init_net(struct net *net) +{ + /* + * Set defaults for local port range + */ + seqlock_init(&net->ipv4.ip_local_ports.lock); + net->ipv4.ip_local_ports.range[0] = 32768; + net->ipv4.ip_local_ports.range[1] = 61000; + return 0; +} + +static __net_exit void inet_exit_net(struct net *net) +{ +} + +static __net_initdata struct pernet_operations af_inet_ops = { + .init = inet_init_net, + .exit = inet_exit_net, +}; + +static int __init init_inet_pernet_ops(void) +{ + return register_pernet_subsys(&af_inet_ops); +} + static int ipv4_proc_init(void); /* @@ -1794,6 +1819,9 @@ static int __init inet_init(void) if (ip_mr_init()) pr_crit("%s: Cannot init ipv4 mroute\n", __func__); #endif + + if (init_inet_pernet_ops()) + pr_crit("%s: Cannot init ipv4 inet pernet ops\n", __func__); /* * Initialise per-cpu ipv4 mibs */ diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index 0d1e2cb877ec..a56b8e6e866a 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -37,11 +37,11 @@ void inet_get_local_port_range(struct net *net, int *low, int *high) unsigned int seq; do { - seq = read_seqbegin(&net->ipv4.sysctl_local_ports.lock); + seq = read_seqbegin(&net->ipv4.ip_local_ports.lock); - *low = net->ipv4.sysctl_local_ports.range[0]; - *high = net->ipv4.sysctl_local_ports.range[1]; - } while (read_seqretry(&net->ipv4.sysctl_local_ports.lock, seq)); + *low = net->ipv4.ip_local_ports.range[0]; + *high = net->ipv4.ip_local_ports.range[1]; + } while (read_seqretry(&net->ipv4.ip_local_ports.lock, seq)); } EXPORT_SYMBOL(inet_get_local_port_range); diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 8210964a9f19..347bdde9a585 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -240,11 +240,11 @@ static void inet_get_ping_group_range_net(struct net *net, kgid_t *low, unsigned int seq; do { - seq = read_seqbegin(&net->ipv4.sysctl_local_ports.lock); + seq = read_seqbegin(&net->ipv4.ip_local_ports.lock); *low = data[0]; *high = data[1]; - } while (read_seqretry(&net->ipv4.sysctl_local_ports.lock, seq)); + } while (read_seqretry(&net->ipv4.ip_local_ports.lock, seq)); } diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index 44eba052b43d..a116c41b05dd 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -45,10 +45,10 @@ static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; /* Update system visible IP port range */ static void set_local_port_range(struct net *net, int range[2]) { - write_seqlock(&net->ipv4.sysctl_local_ports.lock); - net->ipv4.sysctl_local_ports.range[0] = range[0]; - net->ipv4.sysctl_local_ports.range[1] = range[1]; - write_sequnlock(&net->ipv4.sysctl_local_ports.lock); + write_seqlock(&net->ipv4.ip_local_ports.lock); + net->ipv4.ip_local_ports.range[0] = range[0]; + net->ipv4.ip_local_ports.range[1] = range[1]; + write_sequnlock(&net->ipv4.ip_local_ports.lock); } /* Validate changes from /proc interface. */ @@ -57,7 +57,7 @@ static int ipv4_local_port_range(struct ctl_table *table, int write, size_t *lenp, loff_t *ppos) { struct net *net = - container_of(table->data, struct net, ipv4.sysctl_local_ports.range); + container_of(table->data, struct net, ipv4.ip_local_ports.range); int ret; int range[2]; struct ctl_table tmp = { @@ -90,11 +90,11 @@ static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low container_of(table->data, struct net, ipv4.sysctl_ping_group_range); unsigned int seq; do { - seq = read_seqbegin(&net->ipv4.sysctl_local_ports.lock); + seq = read_seqbegin(&net->ipv4.ip_local_ports.lock); *low = data[0]; *high = data[1]; - } while (read_seqretry(&net->ipv4.sysctl_local_ports.lock, seq)); + } while (read_seqretry(&net->ipv4.ip_local_ports.lock, seq)); } /* Update system visible IP port range */ @@ -103,10 +103,10 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig kgid_t *data = table->data; struct net *net = container_of(table->data, struct net, ipv4.sysctl_ping_group_range); - write_seqlock(&net->ipv4.sysctl_local_ports.lock); + write_seqlock(&net->ipv4.ip_local_ports.lock); data[0] = low; data[1] = high; - write_sequnlock(&net->ipv4.sysctl_local_ports.lock); + write_sequnlock(&net->ipv4.ip_local_ports.lock); } /* Validate changes from /proc interface. */ @@ -819,8 +819,8 @@ static struct ctl_table ipv4_net_table[] = { }, { .procname = "ip_local_port_range", - .maxlen = sizeof(init_net.ipv4.sysctl_local_ports.range), - .data = &init_net.ipv4.sysctl_local_ports.range, + .maxlen = sizeof(init_net.ipv4.ip_local_ports.range), + .data = &init_net.ipv4.ip_local_ports.range, .mode = 0644, .proc_handler = ipv4_local_port_range, }, @@ -865,13 +865,6 @@ static __net_init int ipv4_sysctl_init_net(struct net *net) net->ipv4.sysctl_ping_group_range[0] = make_kgid(&init_user_ns, 1); net->ipv4.sysctl_ping_group_range[1] = make_kgid(&init_user_ns, 0); - /* - * Set defaults for local port range - */ - seqlock_init(&net->ipv4.sysctl_local_ports.lock); - net->ipv4.sysctl_local_ports.range[0] = 32768; - net->ipv4.sysctl_local_ports.range[1] = 61000; - net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); if (net->ipv4.ipv4_hdr == NULL) goto err_reg; From ba6b918ab234186d3aa1663e296586a1b526b77a Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Tue, 6 May 2014 11:02:50 -0700 Subject: [PATCH 613/623] ping: move ping_group_range out of CONFIG_SYSCTL Similarly, when CONFIG_SYSCTL is not set, ping_group_range should still work, just that no one can change it. Therefore we should move it out of sysctl_net_ipv4.c. And, it should not share the same seqlock with ip_local_port_range. BTW, rename it to ->ping_group_range instead. Cc: David S. Miller Cc: Francois Romieu Reported-by: Stefan de Konink Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- include/net/netns/ipv4.h | 7 ++++++- net/ipv4/af_inet.c | 8 ++++++++ net/ipv4/ping.c | 6 +++--- net/ipv4/sysctl_net_ipv4.c | 13 +++---------- 4 files changed, 20 insertions(+), 14 deletions(-) diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 3d95cd475316..b2704fd0ec80 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -20,6 +20,11 @@ struct local_ports { int range[2]; }; +struct ping_group_range { + seqlock_t lock; + kgid_t range[2]; +}; + struct netns_ipv4 { #ifdef CONFIG_SYSCTL struct ctl_table_header *forw_hdr; @@ -72,7 +77,7 @@ struct netns_ipv4 { int sysctl_ip_no_pmtu_disc; int sysctl_ip_fwd_use_pmtu; - kgid_t sysctl_ping_group_range[2]; + struct ping_group_range ping_group_range; atomic_t dev_addr_genid; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index cccc8e487c7e..6d6dd345bc4d 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1658,6 +1658,14 @@ static __net_init int inet_init_net(struct net *net) seqlock_init(&net->ipv4.ip_local_ports.lock); net->ipv4.ip_local_ports.range[0] = 32768; net->ipv4.ip_local_ports.range[1] = 61000; + + seqlock_init(&net->ipv4.ping_group_range.lock); + /* + * Sane defaults - nobody may create ping sockets. + * Boot scripts should set this to distro-specific group. + */ + net->ipv4.ping_group_range.range[0] = make_kgid(&init_user_ns, 1); + net->ipv4.ping_group_range.range[1] = make_kgid(&init_user_ns, 0); return 0; } diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 347bdde9a585..044a0ddf6a79 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -236,15 +236,15 @@ exit: static void inet_get_ping_group_range_net(struct net *net, kgid_t *low, kgid_t *high) { - kgid_t *data = net->ipv4.sysctl_ping_group_range; + kgid_t *data = net->ipv4.ping_group_range.range; unsigned int seq; do { - seq = read_seqbegin(&net->ipv4.ip_local_ports.lock); + seq = read_seqbegin(&net->ipv4.ping_group_range.lock); *low = data[0]; *high = data[1]; - } while (read_seqretry(&net->ipv4.ip_local_ports.lock, seq)); + } while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); } diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c index a116c41b05dd..5cde8f263d40 100644 --- a/net/ipv4/sysctl_net_ipv4.c +++ b/net/ipv4/sysctl_net_ipv4.c @@ -87,7 +87,7 @@ static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low { kgid_t *data = table->data; struct net *net = - container_of(table->data, struct net, ipv4.sysctl_ping_group_range); + container_of(table->data, struct net, ipv4.ping_group_range.range); unsigned int seq; do { seq = read_seqbegin(&net->ipv4.ip_local_ports.lock); @@ -102,7 +102,7 @@ static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t hig { kgid_t *data = table->data; struct net *net = - container_of(table->data, struct net, ipv4.sysctl_ping_group_range); + container_of(table->data, struct net, ipv4.ping_group_range.range); write_seqlock(&net->ipv4.ip_local_ports.lock); data[0] = low; data[1] = high; @@ -805,7 +805,7 @@ static struct ctl_table ipv4_net_table[] = { }, { .procname = "ping_group_range", - .data = &init_net.ipv4.sysctl_ping_group_range, + .data = &init_net.ipv4.ping_group_range.range, .maxlen = sizeof(gid_t)*2, .mode = 0644, .proc_handler = ipv4_ping_group_range, @@ -858,13 +858,6 @@ static __net_init int ipv4_sysctl_init_net(struct net *net) table[i].data += (void *)net - (void *)&init_net; } - /* - * Sane defaults - nobody may create ping sockets. - * Boot scripts should set this to distro-specific group. - */ - net->ipv4.sysctl_ping_group_range[0] = make_kgid(&init_user_ns, 1); - net->ipv4.sysctl_ping_group_range[1] = make_kgid(&init_user_ns, 0); - net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); if (net->ipv4.ipv4_hdr == NULL) goto err_reg; From 6af55ff52b02d492d45db88df3e461fa51a6f753 Mon Sep 17 00:00:00 2001 From: Darek Marcinkiewicz Date: Tue, 6 May 2014 22:24:50 +0200 Subject: [PATCH 614/623] Driver for Beckhoff CX5020 EtherCAT master module. This driver adds support for EtherCAT master module located on CCAT FPGA found on Beckhoff CX series industrial PCs. The driver exposes EtherCAT master as an ethernet interface. EtherCAT is a fieldbus protocol defined on top of ethernet and Beckhoff CX5020 PCs come with built-in EtherCAT master module located on a FPGA, which in turn is connected to a PCI bus. Signed-off-by: Dariusz Marcinkiewicz Signed-off-by: David S. Miller --- drivers/net/ethernet/Kconfig | 12 + drivers/net/ethernet/Makefile | 1 + drivers/net/ethernet/ec_bhf.c | 706 ++++++++++++++++++++++++++++++++++ 3 files changed, 719 insertions(+) create mode 100644 drivers/net/ethernet/ec_bhf.c diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index 39b26fe28d10..d7401017a3f1 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -35,6 +35,18 @@ source "drivers/net/ethernet/calxeda/Kconfig" source "drivers/net/ethernet/chelsio/Kconfig" source "drivers/net/ethernet/cirrus/Kconfig" source "drivers/net/ethernet/cisco/Kconfig" + +config CX_ECAT + tristate "Beckhoff CX5020 EtherCAT master support" + depends on PCI + ---help--- + Driver for EtherCAT master module located on CCAT FPGA + that can be found on Beckhoff CX5020, and possibly other of CX + Beckhoff CX series industrial PCs. + + To compile this driver as a module, choose M here. The module + will be called ec_bhf. + source "drivers/net/ethernet/davicom/Kconfig" config DNET diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index 545d0b3b9cb4..35190e36c456 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_NET_CALXEDA_XGMAC) += calxeda/ obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/ obj-$(CONFIG_NET_VENDOR_CIRRUS) += cirrus/ obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/ +obj-$(CONFIG_CX_ECAT) += ec_bhf.o obj-$(CONFIG_DM9000) += davicom/ obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_NET_VENDOR_DEC) += dec/ diff --git a/drivers/net/ethernet/ec_bhf.c b/drivers/net/ethernet/ec_bhf.c new file mode 100644 index 000000000000..4884205e56ee --- /dev/null +++ b/drivers/net/ethernet/ec_bhf.c @@ -0,0 +1,706 @@ + /* + * drivers/net/ethernet/beckhoff/ec_bhf.c + * + * Copyright (C) 2014 Darek Marcinkiewicz + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +/* This is a driver for EtherCAT master module present on CCAT FPGA. + * Those can be found on Bechhoff CX50xx industrial PCs. + */ + +#if 0 +#define DEBUG +#endif +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#define TIMER_INTERVAL_NSEC 20000 + +#define INFO_BLOCK_SIZE 0x10 +#define INFO_BLOCK_TYPE 0x0 +#define INFO_BLOCK_REV 0x2 +#define INFO_BLOCK_BLK_CNT 0x4 +#define INFO_BLOCK_TX_CHAN 0x4 +#define INFO_BLOCK_RX_CHAN 0x5 +#define INFO_BLOCK_OFFSET 0x8 + +#define EC_MII_OFFSET 0x4 +#define EC_FIFO_OFFSET 0x8 +#define EC_MAC_OFFSET 0xc + +#define MAC_FRAME_ERR_CNT 0x0 +#define MAC_RX_ERR_CNT 0x1 +#define MAC_CRC_ERR_CNT 0x2 +#define MAC_LNK_LST_ERR_CNT 0x3 +#define MAC_TX_FRAME_CNT 0x10 +#define MAC_RX_FRAME_CNT 0x14 +#define MAC_TX_FIFO_LVL 0x20 +#define MAC_DROPPED_FRMS 0x28 +#define MAC_CONNECTED_CCAT_FLAG 0x78 + +#define MII_MAC_ADDR 0x8 +#define MII_MAC_FILT_FLAG 0xe +#define MII_LINK_STATUS 0xf + +#define FIFO_TX_REG 0x0 +#define FIFO_TX_RESET 0x8 +#define FIFO_RX_REG 0x10 +#define FIFO_RX_ADDR_VALID (1u << 31) +#define FIFO_RX_RESET 0x18 + +#define DMA_CHAN_OFFSET 0x1000 +#define DMA_CHAN_SIZE 0x8 + +#define DMA_WINDOW_SIZE_MASK 0xfffffffc + +static struct pci_device_id ids[] = { + { PCI_DEVICE(0x15ec, 0x5000), }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, ids); + +struct rx_header { +#define RXHDR_NEXT_ADDR_MASK 0xffffffu +#define RXHDR_NEXT_VALID (1u << 31) + __le32 next; +#define RXHDR_NEXT_RECV_FLAG 0x1 + __le32 recv; +#define RXHDR_LEN_MASK 0xfffu + __le16 len; + __le16 port; + __le32 reserved; + u8 timestamp[8]; +} __packed; + +#define PKT_PAYLOAD_SIZE 0x7e8 +struct rx_desc { + struct rx_header header; + u8 data[PKT_PAYLOAD_SIZE]; +} __packed; + +struct tx_header { + __le16 len; +#define TX_HDR_PORT_0 0x1 +#define TX_HDR_PORT_1 0x2 + u8 port; + u8 ts_enable; +#define TX_HDR_SENT 0x1 + __le32 sent; + u8 timestamp[8]; +} __packed; + +struct tx_desc { + struct tx_header header; + u8 data[PKT_PAYLOAD_SIZE]; +} __packed; + +#define FIFO_SIZE 64 + +static long polling_frequency = TIMER_INTERVAL_NSEC; + +struct bhf_dma { + u8 *buf; + size_t len; + dma_addr_t buf_phys; + + u8 *alloc; + size_t alloc_len; + dma_addr_t alloc_phys; +}; + +struct ec_bhf_priv { + struct net_device *net_dev; + + struct pci_dev *dev; + + void * __iomem io; + void * __iomem dma_io; + + struct hrtimer hrtimer; + + int tx_dma_chan; + int rx_dma_chan; + void * __iomem ec_io; + void * __iomem fifo_io; + void * __iomem mii_io; + void * __iomem mac_io; + + struct bhf_dma rx_buf; + struct rx_desc *rx_descs; + int rx_dnext; + int rx_dcount; + + struct bhf_dma tx_buf; + struct tx_desc *tx_descs; + int tx_dcount; + int tx_dnext; + + u64 stat_rx_bytes; + u64 stat_tx_bytes; +}; + +#define PRIV_TO_DEV(priv) (&(priv)->dev->dev) + +#define ETHERCAT_MASTER_ID 0x14 + +static void ec_bhf_print_status(struct ec_bhf_priv *priv) +{ + struct device *dev = PRIV_TO_DEV(priv); + + dev_dbg(dev, "Frame error counter: %d\n", + ioread8(priv->mac_io + MAC_FRAME_ERR_CNT)); + dev_dbg(dev, "RX error counter: %d\n", + ioread8(priv->mac_io + MAC_RX_ERR_CNT)); + dev_dbg(dev, "CRC error counter: %d\n", + ioread8(priv->mac_io + MAC_CRC_ERR_CNT)); + dev_dbg(dev, "TX frame counter: %d\n", + ioread32(priv->mac_io + MAC_TX_FRAME_CNT)); + dev_dbg(dev, "RX frame counter: %d\n", + ioread32(priv->mac_io + MAC_RX_FRAME_CNT)); + dev_dbg(dev, "TX fifo level: %d\n", + ioread8(priv->mac_io + MAC_TX_FIFO_LVL)); + dev_dbg(dev, "Dropped frames: %d\n", + ioread8(priv->mac_io + MAC_DROPPED_FRMS)); + dev_dbg(dev, "Connected with CCAT slot: %d\n", + ioread8(priv->mac_io + MAC_CONNECTED_CCAT_FLAG)); + dev_dbg(dev, "Link status: %d\n", + ioread8(priv->mii_io + MII_LINK_STATUS)); +} + +static void ec_bhf_reset(struct ec_bhf_priv *priv) +{ + iowrite8(0, priv->mac_io + MAC_FRAME_ERR_CNT); + iowrite8(0, priv->mac_io + MAC_RX_ERR_CNT); + iowrite8(0, priv->mac_io + MAC_CRC_ERR_CNT); + iowrite8(0, priv->mac_io + MAC_LNK_LST_ERR_CNT); + iowrite32(0, priv->mac_io + MAC_TX_FRAME_CNT); + iowrite32(0, priv->mac_io + MAC_RX_FRAME_CNT); + iowrite8(0, priv->mac_io + MAC_DROPPED_FRMS); + + iowrite8(0, priv->fifo_io + FIFO_TX_RESET); + iowrite8(0, priv->fifo_io + FIFO_RX_RESET); + + iowrite8(0, priv->mac_io + MAC_TX_FIFO_LVL); +} + +static void ec_bhf_send_packet(struct ec_bhf_priv *priv, struct tx_desc *desc) +{ + u32 len = le16_to_cpu(desc->header.len) + sizeof(desc->header); + u32 addr = (u8 *)desc - priv->tx_buf.buf; + + iowrite32((ALIGN(len, 8) << 24) | addr, priv->fifo_io + FIFO_TX_REG); + + dev_dbg(PRIV_TO_DEV(priv), "Done sending packet\n"); +} + +static int ec_bhf_desc_sent(struct tx_desc *desc) +{ + return le32_to_cpu(desc->header.sent) & TX_HDR_SENT; +} + +static void ec_bhf_process_tx(struct ec_bhf_priv *priv) +{ + if (unlikely(netif_queue_stopped(priv->net_dev))) { + /* Make sure that we perceive changes to tx_dnext. */ + smp_rmb(); + + if (ec_bhf_desc_sent(&priv->tx_descs[priv->tx_dnext])) + netif_wake_queue(priv->net_dev); + } +} + +static int ec_bhf_pkt_received(struct rx_desc *desc) +{ + return le32_to_cpu(desc->header.recv) & RXHDR_NEXT_RECV_FLAG; +} + +static void ec_bhf_add_rx_desc(struct ec_bhf_priv *priv, struct rx_desc *desc) +{ + iowrite32(FIFO_RX_ADDR_VALID | ((u8 *)(desc) - priv->rx_buf.buf), + priv->fifo_io + FIFO_RX_REG); +} + +static void ec_bhf_process_rx(struct ec_bhf_priv *priv) +{ + struct rx_desc *desc = &priv->rx_descs[priv->rx_dnext]; + struct device *dev = PRIV_TO_DEV(priv); + + while (ec_bhf_pkt_received(desc)) { + int pkt_size = (le16_to_cpu(desc->header.len) & + RXHDR_LEN_MASK) - sizeof(struct rx_header) - 4; + u8 *data = desc->data; + struct sk_buff *skb; + + skb = netdev_alloc_skb_ip_align(priv->net_dev, pkt_size); + dev_dbg(dev, "Received packet, size: %d\n", pkt_size); + + if (skb) { + memcpy(skb_put(skb, pkt_size), data, pkt_size); + skb->protocol = eth_type_trans(skb, priv->net_dev); + dev_dbg(dev, "Protocol type: %x\n", skb->protocol); + + priv->stat_rx_bytes += pkt_size; + + netif_rx(skb); + } else { + dev_err_ratelimited(dev, + "Couldn't allocate a skb_buff for a packet of size %u\n", + pkt_size); + } + + desc->header.recv = 0; + + ec_bhf_add_rx_desc(priv, desc); + + priv->rx_dnext = (priv->rx_dnext + 1) % priv->rx_dcount; + desc = &priv->rx_descs[priv->rx_dnext]; + } + +} + +static enum hrtimer_restart ec_bhf_timer_fun(struct hrtimer *timer) +{ + struct ec_bhf_priv *priv = container_of(timer, struct ec_bhf_priv, + hrtimer); + ec_bhf_process_rx(priv); + ec_bhf_process_tx(priv); + + if (!netif_running(priv->net_dev)) + return HRTIMER_NORESTART; + + hrtimer_forward_now(timer, ktime_set(0, polling_frequency)); + return HRTIMER_RESTART; +} + +static int ec_bhf_setup_offsets(struct ec_bhf_priv *priv) +{ + struct device *dev = PRIV_TO_DEV(priv); + unsigned block_count, i; + void * __iomem ec_info; + + dev_dbg(dev, "Info block:\n"); + dev_dbg(dev, "Type of function: %x\n", (unsigned)ioread16(priv->io)); + dev_dbg(dev, "Revision of function: %x\n", + (unsigned)ioread16(priv->io + INFO_BLOCK_REV)); + + block_count = ioread8(priv->io + INFO_BLOCK_BLK_CNT); + dev_dbg(dev, "Number of function blocks: %x\n", block_count); + + for (i = 0; i < block_count; i++) { + u16 type = ioread16(priv->io + i * INFO_BLOCK_SIZE + + INFO_BLOCK_TYPE); + if (type == ETHERCAT_MASTER_ID) + break; + } + if (i == block_count) { + dev_err(dev, "EtherCAT master with DMA block not found\n"); + return -ENODEV; + } + dev_dbg(dev, "EtherCAT master with DMA block found at pos: %d\n", i); + + ec_info = priv->io + i * INFO_BLOCK_SIZE; + dev_dbg(dev, "EtherCAT master revision: %d\n", + ioread16(ec_info + INFO_BLOCK_REV)); + + priv->tx_dma_chan = ioread8(ec_info + INFO_BLOCK_TX_CHAN); + dev_dbg(dev, "EtherCAT master tx dma channel: %d\n", + priv->tx_dma_chan); + + priv->rx_dma_chan = ioread8(ec_info + INFO_BLOCK_RX_CHAN); + dev_dbg(dev, "EtherCAT master rx dma channel: %d\n", + priv->rx_dma_chan); + + priv->ec_io = priv->io + ioread32(ec_info + INFO_BLOCK_OFFSET); + priv->mii_io = priv->ec_io + ioread32(priv->ec_io + EC_MII_OFFSET); + priv->fifo_io = priv->ec_io + ioread32(priv->ec_io + EC_FIFO_OFFSET); + priv->mac_io = priv->ec_io + ioread32(priv->ec_io + EC_MAC_OFFSET); + + dev_dbg(dev, + "EtherCAT block addres: %p, fifo address: %p, mii address: %p, mac address: %p\n", + priv->ec_io, priv->fifo_io, priv->mii_io, priv->mac_io); + + return 0; +} + +static netdev_tx_t ec_bhf_start_xmit(struct sk_buff *skb, + struct net_device *net_dev) +{ + struct ec_bhf_priv *priv = netdev_priv(net_dev); + struct tx_desc *desc; + unsigned len; + + dev_dbg(PRIV_TO_DEV(priv), "Starting xmit\n"); + + desc = &priv->tx_descs[priv->tx_dnext]; + + skb_copy_and_csum_dev(skb, desc->data); + len = skb->len; + + memset(&desc->header, 0, sizeof(desc->header)); + desc->header.len = cpu_to_le16(len); + desc->header.port = TX_HDR_PORT_0; + + ec_bhf_send_packet(priv, desc); + + priv->tx_dnext = (priv->tx_dnext + 1) % priv->tx_dcount; + + if (!ec_bhf_desc_sent(&priv->tx_descs[priv->tx_dnext])) { + /* Make sure that update updates to tx_dnext are perceived + * by timer routine. + */ + smp_wmb(); + + netif_stop_queue(net_dev); + + dev_dbg(PRIV_TO_DEV(priv), "Stopping netif queue\n"); + ec_bhf_print_status(priv); + } + + priv->stat_tx_bytes += len; + + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +static int ec_bhf_alloc_dma_mem(struct ec_bhf_priv *priv, + struct bhf_dma *buf, + int channel, + int size) +{ + int offset = channel * DMA_CHAN_SIZE + DMA_CHAN_OFFSET; + struct device *dev = PRIV_TO_DEV(priv); + u32 mask; + + iowrite32(0xffffffff, priv->dma_io + offset); + + mask = ioread32(priv->dma_io + offset); + mask &= DMA_WINDOW_SIZE_MASK; + dev_dbg(dev, "Read mask %x for channel %d\n", mask, channel); + + /* We want to allocate a chunk of memory that is: + * - aligned to the mask we just read + * - is of size 2^mask bytes (at most) + * In order to ensure that we will allocate buffer of + * 2 * 2^mask bytes. + */ + buf->len = min_t(int, ~mask + 1, size); + buf->alloc_len = 2 * buf->len; + + dev_dbg(dev, "Allocating %d bytes for channel %d", + (int)buf->alloc_len, channel); + buf->alloc = dma_alloc_coherent(dev, buf->alloc_len, &buf->alloc_phys, + GFP_KERNEL); + if (buf->alloc == NULL) { + dev_info(dev, "Failed to allocate buffer\n"); + return -ENOMEM; + } + + buf->buf_phys = (buf->alloc_phys + buf->len) & mask; + buf->buf = buf->alloc + (buf->buf_phys - buf->alloc_phys); + + iowrite32(0, priv->dma_io + offset + 4); + iowrite32(buf->buf_phys, priv->dma_io + offset); + dev_dbg(dev, "Buffer: %x and read from dev: %x", + (unsigned)buf->buf_phys, ioread32(priv->dma_io + offset)); + + return 0; +} + +static void ec_bhf_setup_tx_descs(struct ec_bhf_priv *priv) +{ + int i = 0; + + priv->tx_dcount = priv->tx_buf.len / sizeof(struct tx_desc); + priv->tx_descs = (struct tx_desc *) priv->tx_buf.buf; + priv->tx_dnext = 0; + + for (i = 0; i < priv->tx_dcount; i++) + priv->tx_descs[i].header.sent = cpu_to_le32(TX_HDR_SENT); +} + +static void ec_bhf_setup_rx_descs(struct ec_bhf_priv *priv) +{ + int i; + + priv->rx_dcount = priv->rx_buf.len / sizeof(struct rx_desc); + priv->rx_descs = (struct rx_desc *) priv->rx_buf.buf; + priv->rx_dnext = 0; + + for (i = 0; i < priv->rx_dcount; i++) { + struct rx_desc *desc = &priv->rx_descs[i]; + u32 next; + + if (i != priv->rx_dcount - 1) + next = (u8 *)(desc + 1) - priv->rx_buf.buf; + else + next = 0; + next |= RXHDR_NEXT_VALID; + desc->header.next = cpu_to_le32(next); + desc->header.recv = 0; + ec_bhf_add_rx_desc(priv, desc); + } +} + +static int ec_bhf_open(struct net_device *net_dev) +{ + struct ec_bhf_priv *priv = netdev_priv(net_dev); + struct device *dev = PRIV_TO_DEV(priv); + int err = 0; + + dev_info(dev, "Opening device\n"); + + ec_bhf_reset(priv); + + err = ec_bhf_alloc_dma_mem(priv, &priv->rx_buf, priv->rx_dma_chan, + FIFO_SIZE * sizeof(struct rx_desc)); + if (err) { + dev_err(dev, "Failed to allocate rx buffer\n"); + goto out; + } + ec_bhf_setup_rx_descs(priv); + + dev_info(dev, "RX buffer allocated, address: %x\n", + (unsigned)priv->rx_buf.buf_phys); + + err = ec_bhf_alloc_dma_mem(priv, &priv->tx_buf, priv->tx_dma_chan, + FIFO_SIZE * sizeof(struct tx_desc)); + if (err) { + dev_err(dev, "Failed to allocate tx buffer\n"); + goto error_rx_free; + } + dev_dbg(dev, "TX buffer allocated, addres: %x\n", + (unsigned)priv->tx_buf.buf_phys); + + iowrite8(0, priv->mii_io + MII_MAC_FILT_FLAG); + + ec_bhf_setup_tx_descs(priv); + + netif_start_queue(net_dev); + + hrtimer_init(&priv->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + priv->hrtimer.function = ec_bhf_timer_fun; + hrtimer_start(&priv->hrtimer, ktime_set(0, polling_frequency), + HRTIMER_MODE_REL); + + dev_info(PRIV_TO_DEV(priv), "Device open\n"); + + ec_bhf_print_status(priv); + + return 0; + +error_rx_free: + dma_free_coherent(dev, priv->rx_buf.alloc_len, priv->rx_buf.alloc, + priv->rx_buf.alloc_len); +out: + return err; +} + +static int ec_bhf_stop(struct net_device *net_dev) +{ + struct ec_bhf_priv *priv = netdev_priv(net_dev); + struct device *dev = PRIV_TO_DEV(priv); + + hrtimer_cancel(&priv->hrtimer); + + ec_bhf_reset(priv); + + netif_tx_disable(net_dev); + + dma_free_coherent(dev, priv->tx_buf.alloc_len, + priv->tx_buf.alloc, priv->tx_buf.alloc_phys); + dma_free_coherent(dev, priv->rx_buf.alloc_len, + priv->rx_buf.alloc, priv->rx_buf.alloc_phys); + + return 0; +} + +static struct rtnl_link_stats64 * +ec_bhf_get_stats(struct net_device *net_dev, + struct rtnl_link_stats64 *stats) +{ + struct ec_bhf_priv *priv = netdev_priv(net_dev); + + stats->rx_errors = ioread8(priv->mac_io + MAC_RX_ERR_CNT) + + ioread8(priv->mac_io + MAC_CRC_ERR_CNT) + + ioread8(priv->mac_io + MAC_FRAME_ERR_CNT); + stats->rx_packets = ioread32(priv->mac_io + MAC_RX_FRAME_CNT); + stats->tx_packets = ioread32(priv->mac_io + MAC_TX_FRAME_CNT); + stats->rx_dropped = ioread8(priv->mac_io + MAC_DROPPED_FRMS); + + stats->tx_bytes = priv->stat_tx_bytes; + stats->rx_bytes = priv->stat_rx_bytes; + + return stats; +} + +static const struct net_device_ops ec_bhf_netdev_ops = { + .ndo_start_xmit = ec_bhf_start_xmit, + .ndo_open = ec_bhf_open, + .ndo_stop = ec_bhf_stop, + .ndo_get_stats64 = ec_bhf_get_stats, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr +}; + +static int ec_bhf_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct net_device *net_dev; + struct ec_bhf_priv *priv; + void * __iomem dma_io; + void * __iomem io; + int err = 0; + + err = pci_enable_device(dev); + if (err) + return err; + + pci_set_master(dev); + + err = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&dev->dev, + "Required dma mask not supported, failed to initialize device\n"); + err = -EIO; + goto err_disable_dev; + } + + err = pci_set_consistent_dma_mask(dev, DMA_BIT_MASK(32)); + if (err) { + dev_err(&dev->dev, + "Required dma mask not supported, failed to initialize device\n"); + goto err_disable_dev; + } + + err = pci_request_regions(dev, "ec_bhf"); + if (err) { + dev_err(&dev->dev, "Failed to request pci memory regions\n"); + goto err_disable_dev; + } + + io = pci_iomap(dev, 0, 0); + if (!io) { + dev_err(&dev->dev, "Failed to map pci card memory bar 0"); + err = -EIO; + goto err_release_regions; + } + + dma_io = pci_iomap(dev, 2, 0); + if (!dma_io) { + dev_err(&dev->dev, "Failed to map pci card memory bar 2"); + err = -EIO; + goto err_unmap; + } + + net_dev = alloc_etherdev(sizeof(struct ec_bhf_priv)); + if (net_dev == 0) { + err = -ENOMEM; + goto err_unmap_dma_io; + } + + pci_set_drvdata(dev, net_dev); + SET_NETDEV_DEV(net_dev, &dev->dev); + + net_dev->features = 0; + net_dev->flags |= IFF_NOARP; + + net_dev->netdev_ops = &ec_bhf_netdev_ops; + + priv = netdev_priv(net_dev); + priv->net_dev = net_dev; + priv->io = io; + priv->dma_io = dma_io; + priv->dev = dev; + + err = ec_bhf_setup_offsets(priv); + if (err < 0) + goto err_free_net_dev; + + memcpy_fromio(net_dev->dev_addr, priv->mii_io + MII_MAC_ADDR, 6); + + dev_dbg(&dev->dev, "CX5020 Ethercat master address: %pM\n", + net_dev->dev_addr); + + err = register_netdev(net_dev); + if (err < 0) + goto err_free_net_dev; + + return 0; + +err_free_net_dev: + free_netdev(net_dev); +err_unmap_dma_io: + pci_iounmap(dev, dma_io); +err_unmap: + pci_iounmap(dev, io); +err_release_regions: + pci_release_regions(dev); +err_disable_dev: + pci_clear_master(dev); + pci_disable_device(dev); + + return err; +} + +static void ec_bhf_remove(struct pci_dev *dev) +{ + struct net_device *net_dev = pci_get_drvdata(dev); + struct ec_bhf_priv *priv = netdev_priv(net_dev); + + unregister_netdev(net_dev); + free_netdev(net_dev); + + pci_iounmap(dev, priv->dma_io); + pci_iounmap(dev, priv->io); + pci_release_regions(dev); + pci_clear_master(dev); + pci_disable_device(dev); +} + +static struct pci_driver pci_driver = { + .name = "ec_bhf", + .id_table = ids, + .probe = ec_bhf_probe, + .remove = ec_bhf_remove, +}; + +static int __init ec_bhf_init(void) +{ + return pci_register_driver(&pci_driver); +} + +static void __exit ec_bhf_exit(void) +{ + pci_unregister_driver(&pci_driver); +} + +module_init(ec_bhf_init); +module_exit(ec_bhf_exit); + +module_param(polling_frequency, long, S_IRUGO); +MODULE_PARM_DESC(polling_frequency, "Polling timer frequency in ns"); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Dariusz Marcinkiewicz "); From 6b5eeb7f874b689403e52a646e485d0191ab9507 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Fri, 9 May 2014 14:45:00 +0200 Subject: [PATCH 615/623] net: cdc_mbim: handle unaccelerated VLAN tagged frames MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This driver maps 802.1q VLANs to MBIM sessions. The mapping is based on a bogus assumption that all tagged frames will use the acceleration API because we enable NETIF_F_HW_VLAN_CTAG_TX. This fails for e.g. frames tagged in userspace using packet sockets. Such frames will erroneously be considered as untagged and silently dropped based on not being IP. Fix by falling back to looking into the ethernet header for a tag if no accelerated tag was found. Fixes: a82c7ce5bc5b ("net: cdc_ncm: map MBIM IPS SessionID to VLAN ID") Cc: Greg Suarez Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_mbim.c | 39 +++++++++++++++++++++++++++----------- 1 file changed, 28 insertions(+), 11 deletions(-) diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 13f7705fd679..2e025ddcef21 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -120,6 +120,16 @@ static void cdc_mbim_unbind(struct usbnet *dev, struct usb_interface *intf) cdc_ncm_unbind(dev, intf); } +/* verify that the ethernet protocol is IPv4 or IPv6 */ +static bool is_ip_proto(__be16 proto) +{ + switch (proto) { + case htons(ETH_P_IP): + case htons(ETH_P_IPV6): + return true; + } + return false; +} static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { @@ -128,6 +138,7 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb struct cdc_ncm_ctx *ctx = info->ctx; __le32 sign = cpu_to_le32(USB_CDC_MBIM_NDP16_IPS_SIGN); u16 tci = 0; + bool is_ip; u8 *c; if (!ctx) @@ -137,25 +148,32 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb if (skb->len <= ETH_HLEN) goto error; + /* Some applications using e.g. packet sockets will + * bypass the VLAN acceleration and create tagged + * ethernet frames directly. We primarily look for + * the accelerated out-of-band tag, but fall back if + * required + */ + skb_reset_mac_header(skb); + if (vlan_get_tag(skb, &tci) < 0 && skb->len > VLAN_ETH_HLEN && + __vlan_get_tag(skb, &tci) == 0) { + is_ip = is_ip_proto(vlan_eth_hdr(skb)->h_vlan_encapsulated_proto); + skb_pull(skb, VLAN_ETH_HLEN); + } else { + is_ip = is_ip_proto(eth_hdr(skb)->h_proto); + skb_pull(skb, ETH_HLEN); + } + /* mapping VLANs to MBIM sessions: * no tag => IPS session <0> * 1 - 255 => IPS session * 256 - 511 => DSS session * 512 - 4095 => unsupported, drop */ - vlan_get_tag(skb, &tci); - switch (tci & 0x0f00) { case 0x0000: /* VLAN ID 0 - 255 */ - /* verify that datagram is IPv4 or IPv6 */ - skb_reset_mac_header(skb); - switch (eth_hdr(skb)->h_proto) { - case htons(ETH_P_IP): - case htons(ETH_P_IPV6): - break; - default: + if (!is_ip) goto error; - } c = (u8 *)&sign; c[3] = tci; break; @@ -169,7 +187,6 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb "unsupported tci=0x%04x\n", tci); goto error; } - skb_pull(skb, ETH_HLEN); } spin_lock_bh(&ctx->mtx); From 0953f78971040fff09064bb564d9ac0cd1fb4e69 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 8 May 2014 10:09:20 +0200 Subject: [PATCH 616/623] net: mdio-gpio: fix device-tree binding documentation Fix aliases syntax in device-tree binding example to avoid copy-paste errors (the alias would be dropped silently). Signed-off-by: Johan Hovold Signed-off-by: David S. Miller --- Documentation/devicetree/bindings/net/mdio-gpio.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/mdio-gpio.txt b/Documentation/devicetree/bindings/net/mdio-gpio.txt index c79bab025369..8dbcf8295c6c 100644 --- a/Documentation/devicetree/bindings/net/mdio-gpio.txt +++ b/Documentation/devicetree/bindings/net/mdio-gpio.txt @@ -14,7 +14,7 @@ node. Example: aliases { - mdio-gpio0 = <&mdio0>; + mdio-gpio0 = &mdio0; }; mdio0: mdio { From 7f52da56f76f61112a9c1db41975376764828e71 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 8 May 2014 10:09:21 +0200 Subject: [PATCH 617/623] net: mdio-gpio: warn about missing bus alias id Use a sane default bus id (rather than -ENODEV) and print a warning when the bus alias id is missing. Signed-off-by: Johan Hovold Signed-off-by: David S. Miller --- drivers/net/phy/mdio-gpio.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c index 9c4defdec67b..5f1a2250018f 100644 --- a/drivers/net/phy/mdio-gpio.c +++ b/drivers/net/phy/mdio-gpio.c @@ -215,6 +215,10 @@ static int mdio_gpio_probe(struct platform_device *pdev) if (pdev->dev.of_node) { pdata = mdio_gpio_of_get_data(pdev); bus_id = of_alias_get_id(pdev->dev.of_node, "mdio-gpio"); + if (bus_id < 0) { + dev_warn(&pdev->dev, "failed to get alias id\n"); + bus_id = 0; + } } else { pdata = dev_get_platdata(&pdev->dev); bus_id = pdev->id; From 59993f48b38fd46863b23bb1bb1dc3291e7278fb Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 8 May 2014 10:09:22 +0200 Subject: [PATCH 618/623] Revert "net: eth: cpsw: Correctly attach to GPIO bitbang MDIO driver" This reverts commit f8d56d8f892be43a2404356073e16401eb5a42e6 ("net: eth: cpsw: Correctly attach to GPIO bitbang MDIO driver"). Fix potential null-pointer dereference at probe if the mdio-gpio device has not been successfully probed yet. The offending commit is plain wrong for a number of reasons. First of all it accesses internal driver data of an unrelated device. Neither does it check that the data is non-null (which it is in case the device has not been probed yet). Furthermore, the decision on whether to treat any driver data according to the mdio-gpio driver's internals is made based on the node name. But the name is not compared against "mdio" which is the normal name for the node, but rather against "gpio" which the node does not have to be named (and shouldn't be according to the binding documentation). [ If this hack is to be kept out-of-tree it should at least be matching against the compatible property. ] Cc: Stefan Roese Cc: stable # v3.14 Signed-off-by: Johan Hovold Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 36aa109416c4..18d83d8d7f74 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1871,18 +1871,8 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, mdio_node = of_find_node_by_phandle(be32_to_cpup(parp)); phyid = be32_to_cpup(parp+1); mdio = of_find_device_by_node(mdio_node); - - if (strncmp(mdio->name, "gpio", 4) == 0) { - /* GPIO bitbang MDIO driver attached */ - struct mii_bus *bus = dev_get_drvdata(&mdio->dev); - - snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), - PHY_ID_FMT, bus->id, phyid); - } else { - /* davinci MDIO driver attached */ - snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), - PHY_ID_FMT, mdio->name, phyid); - } + snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), + PHY_ID_FMT, mdio->name, phyid); mac_addr = of_get_mac_address(slave_node); if (mac_addr) From 6954cc1f238199e971ec905c5cc87120806ac981 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 8 May 2014 10:09:23 +0200 Subject: [PATCH 619/623] net: cpsw: fix null dereference at probe Fix null-pointer dereference at probe when the mdio platform device is missing (e.g. when it has been disabled in DT). Cc: stable # v3.8 Signed-off-by: Johan Hovold Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 18d83d8d7f74..db9360cd861c 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1871,6 +1871,10 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, mdio_node = of_find_node_by_phandle(be32_to_cpup(parp)); phyid = be32_to_cpup(parp+1); mdio = of_find_device_by_node(mdio_node); + if (!mdio) { + pr_err("Missing mdio platform device\n"); + return -EINVAL; + } snprintf(slave_data->phy_id, sizeof(slave_data->phy_id), PHY_ID_FMT, mdio->name, phyid); From 60e71ab56b5fbd839aaef4f4af7778d86e0206f0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 8 May 2014 10:09:24 +0200 Subject: [PATCH 620/623] net: cpsw: add missing of_node_put Add missing of_node_put to avoid kref leak. Signed-off-by: Johan Hovold Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index db9360cd861c..c331b7ebc812 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1871,6 +1871,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, mdio_node = of_find_node_by_phandle(be32_to_cpup(parp)); phyid = be32_to_cpup(parp+1); mdio = of_find_device_by_node(mdio_node); + of_node_put(mdio_node); if (!mdio) { pr_err("Missing mdio platform device\n"); return -EINVAL; From de682941eef3e5f6d1b653a6c214bc8a288f17c1 Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Thu, 8 May 2014 12:34:31 +0300 Subject: [PATCH 621/623] bnx2x: Fix UNDI driver unload Commit 91ebb928b "bnx2x: Add support for Multi-Function UNDI" contains a bug which prevent the emptying of the device's Rx buffers before reset. As a result, on new boards it is likely HW will reach some fatal assertion once its interfaces load after UNDI was previously loaded. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index b260913db236..3b0d43154e67 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -10051,8 +10051,8 @@ static void bnx2x_prev_unload_close_mac(struct bnx2x *bp, #define BCM_5710_UNDI_FW_MF_MAJOR (0x07) #define BCM_5710_UNDI_FW_MF_MINOR (0x08) #define BCM_5710_UNDI_FW_MF_VERS (0x05) -#define BNX2X_PREV_UNDI_MF_PORT(p) (0x1a150c + ((p) << 4)) -#define BNX2X_PREV_UNDI_MF_FUNC(f) (0x1a184c + ((f) << 4)) +#define BNX2X_PREV_UNDI_MF_PORT(p) (BAR_TSTRORM_INTMEM + 0x150c + ((p) << 4)) +#define BNX2X_PREV_UNDI_MF_FUNC(f) (BAR_TSTRORM_INTMEM + 0x184c + ((f) << 4)) static bool bnx2x_prev_unload_undi_fw_supports_mf(struct bnx2x *bp) { u8 major, minor, version; @@ -10352,6 +10352,7 @@ static int bnx2x_prev_unload_common(struct bnx2x *bp) /* Reset should be performed after BRB is emptied */ if (reset_reg & MISC_REGISTERS_RESET_REG_1_RST_BRB1) { u32 timer_count = 1000; + bool need_write = true; /* Close the MAC Rx to prevent BRB from filling up */ bnx2x_prev_unload_close_mac(bp, &mac_vals); @@ -10398,7 +10399,10 @@ static int bnx2x_prev_unload_common(struct bnx2x *bp) * cleaning methods - might be redundant but harmless. */ if (bnx2x_prev_unload_undi_fw_supports_mf(bp)) { - bnx2x_prev_unload_undi_mf(bp); + if (need_write) { + bnx2x_prev_unload_undi_mf(bp); + need_write = false; + } } else if (prev_undi) { /* If UNDI resides in memory, * manually increment it From a9de0500083c18589ba2ea4543135c1bea8419ec Mon Sep 17 00:00:00 2001 From: Emil Goode Date: Fri, 9 May 2014 01:07:17 +0200 Subject: [PATCH 622/623] net: cassini: use nested lock annotation In the cas_lock_tx function we acquire multiple locks in a loop and need to use nested lock annotation to prevent lockdep warnings. Reported-by: Meelis Roos Signed-off-by: Emil Goode Signed-off-by: David S. Miller --- drivers/net/ethernet/sun/cassini.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sun/cassini.c b/drivers/net/ethernet/sun/cassini.c index df8d383acf48..b9ac20f42651 100644 --- a/drivers/net/ethernet/sun/cassini.c +++ b/drivers/net/ethernet/sun/cassini.c @@ -246,7 +246,7 @@ static inline void cas_lock_tx(struct cas *cp) int i; for (i = 0; i < N_TX_RINGS; i++) - spin_lock(&cp->tx_lock[i]); + spin_lock_nested(&cp->tx_lock[i], i); } static inline void cas_lock_all(struct cas *cp) From 1a466ae96e9f749d02a73315a3e66375e61a61dd Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 8 May 2014 14:54:42 -0700 Subject: [PATCH 623/623] ptp: fix kconfig dependency warnings Fix kconfig warnings: PTP_1588_CLOCK selects NET_PTP_CLASSIFY, which depends on NET, so PTP_1588_CLOCK should also depend on NET. PTP_1588_CLOCK_PCH selects PTP_1588_CLOCK so the former should depend on NET. warning: (IXP4XX_ETH && PTP_1588_CLOCK) selects NET_PTP_CLASSIFY which has unmet direct dependencies (NET) warning: (SFC && TILE_NET && BFIN_MAC_USE_HWSTAMP && TIGON3 && FEC && E1000E && IGB && IXGBE && I40E && MLX4_EN && SXGBE_ETH && STMMAC_ETH && TI_CPTS && PTP_1588_CLOCK_GIANFAR && PTP_1588_CLOCK_IXP46X && DP83640_PHY && PTP_1588_CLOCK_PCH) selects PTP_1588_CLOCK which has unmet direct dependencies (NET) [This warning is caused by the new 'depends on NET' in PTP_1588_CLOCK.] Signed-off-by: Randy Dunlap Acked-by: Richard Cochran Signed-off-by: David S. Miller --- drivers/ptp/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig index 6963bdf54175..6aea373547f6 100644 --- a/drivers/ptp/Kconfig +++ b/drivers/ptp/Kconfig @@ -6,6 +6,7 @@ menu "PTP clock support" config PTP_1588_CLOCK tristate "PTP clock support" + depends on NET select PPS select NET_PTP_CLASSIFY help @@ -74,7 +75,7 @@ config DP83640_PHY config PTP_1588_CLOCK_PCH tristate "Intel PCH EG20T as PTP clock" depends on X86 || COMPILE_TEST - depends on HAS_IOMEM + depends on HAS_IOMEM && NET select PTP_1588_CLOCK help This driver adds support for using the PCH EG20T as a PTP