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Jia-Ju Bai 442b50c0af gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap() 
[ Upstream commit e36eaf94be8f7bc4e686246eed3cf92d845e2ef8 ]

The driver may sleep while holding a spinlock.
The function call path (from bottom to top) in Linux 4.19 is:

drivers/gpio/gpio-grgpio.c, 261:
	request_irq in grgpio_irq_map
drivers/gpio/gpio-grgpio.c, 255:
	_raw_spin_lock_irqsave in grgpio_irq_map

drivers/gpio/gpio-grgpio.c, 318:
	free_irq in grgpio_irq_unmap
drivers/gpio/gpio-grgpio.c, 299:
	_raw_spin_lock_irqsave in grgpio_irq_unmap

request_irq() and free_irq() can sleep at runtime.

To fix these bugs, request_irq() and free_irq() are called without
holding the spinlock.

These bugs are found by a static analysis tool STCheck written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20191218132605.10594-1-baijiaju1990@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-24 08:34:36 +01:00
..
devres.c
gpio: Export devm_gpiod_get_from_of_node() for consumers
2018-01-12 11:05:24 +01:00
gpio-74x164.c
The is the bulk of GPIO changes for the v4.16 kernel cycle.
2018-01-31 12:25:27 -08:00
gpio-74xx-mmio.c
gpio: 74xx-mmio: Use of_device_get_match_data()
2018-05-16 14:35:24 +02:00
gpio-104-dio-48e.c
gpio: 104-dio-48e: make array 'ports' static, shrinks object size
2018-05-16 14:35:24 +02:00
gpio-104-idi-48.c
gpio: make several const arrays static, shrinks object size
2018-05-16 14:35:24 +02:00
gpio-104-idio-16.c
gpio: 104-idio-16: Implement get_multiple callback
2018-03-26 10:10:18 +02:00
gpio-adnp.c
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
2019-04-03 06:26:27 +02:00
gpio-adp5520.c
gpio: adp5520: Include proper header
2018-01-13 22:12:07 +01:00
gpio-adp5588.c
gpio: adp5588: Fix sleep-in-atomic-context bug
2018-08-29 10:54:38 +02:00
gpio-altera-a10sr.c
gpio: altera-a10sr: Set proper output level for direction_output
2019-02-06 17:30:12 +01:00
gpio-altera.c
gpio: altera: Include GPIO driver header
2018-01-13 22:18:34 +01:00
gpio-amd8111.c
gpio: amd8111: Include proper header
2018-01-13 22:22:49 +01:00
gpio-amdpt.c
…
gpio-arizona.c
gpio: arizona: Include proper header
2018-01-13 22:47:48 +01:00
gpio-aspeed.c
gpio/aspeed: Fix incorrect number of banks
2020-01-27 14:51:13 +01:00
gpio-ath79.c
gpio: fix meaningless return expression
2018-07-29 23:34:54 +02:00
gpio-bcm-kona.c
gpio: bcm-kona: Don't shadow error code of gpiochip_lock_as_irq()
2018-08-06 23:46:55 +02:00
gpio-bd9571mwv.c
gpio: Add ROHM BD9571MWV-M PMIC GPIO driver
2017-04-28 09:47:46 +02:00
gpio-brcmstb.c
gpio: brcmstb: allow 0 width GPIO banks
2018-11-13 11:08:30 -08:00
gpio-bt8xx.c
gpio: bt8xx: Include proper header
2018-01-13 22:56:52 +01:00
gpio-clps711x.c
…
gpio-crystalcove.c
gpio: crystalcove: Include proper header
2018-01-14 01:48:48 +01:00
gpio-cs5535.c
gpio: cs5535: Include proper header
2018-01-14 01:56:24 +01:00
gpio-da9052.c
gpio: da905x: Include proper header
2018-01-14 02:00:10 +01:00
gpio-da9055.c
gpio: da905x: Include proper header
2018-01-14 02:00:10 +01:00
gpio-davinci.c
gpio: davinci: silence error prints in case of EPROBE_DEFER
2019-07-28 08:29:28 +02:00
gpio-dln2.c
gpio: dln2: Include proper header
2018-03-19 01:50:07 +01:00
gpio-dwapb.c
gpio: dwapb: Fix error handling in dwapb_gpio_probe()
2018-08-29 14:04:04 +02:00
gpio-eic-sprd.c
gpio: eic: sprd: Fix the incorrect EIC offset when toggling
2019-10-17 13:45:10 -07:00
gpio-em.c
gpio: em: Don't shadow error code of gpiochip_lock_as_irq()
2018-08-06 23:46:55 +02:00
gpio-ep93xx.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-exar.c
gpio: exar: add a check for the return value of ida_simple_get fails
2019-04-03 06:26:27 +02:00
gpio-f7188x.c
gpio: f7188x: Add a missing break
2017-04-28 10:09:16 +02:00
gpio-ftgpio010.c
gpio: ftgpio010: Drop of_gpio.h include
2018-03-19 01:50:24 +01:00
gpio-ge.c
gpio: ge: Fix build warning
2018-05-16 14:35:24 +02:00
gpio-gpio-mm.c
gpio: make several const arrays static, shrinks object size
2018-05-16 14:35:24 +02:00
gpio-grgpio.c
gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
2020-02-24 08:34:36 +01:00
gpio-hlwd.c
gpio: Add GPIO driver for Nintendo Wii
2018-02-22 13:54:35 +01:00
gpio-htc-egpio.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
gpio-ich.c
gpio: ich: Use BIT() macro
2018-03-19 01:50:29 +01:00
gpio-ingenic.c
gpio: ingenic: Use of_device_get_match_data()
2018-05-16 14:35:24 +02:00
gpio-intel-mid.c
gpio-intel-mid: Delete an error message
2018-02-22 15:29:05 +01:00
gpio-iop.c
gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
2017-12-02 22:42:21 +01:00
gpio-it87.c
gpio: it87: Add support for IT8613
2018-08-10 23:19:17 +02:00
gpio-janz-ttl.c
gpio: janz-ttl: Use BIT() macro
2018-03-19 01:50:30 +01:00
gpio-kempld.c
gpio: kempld: Include the right header
2018-03-19 01:50:31 +01:00
gpio-ks8695.c
gpio: ks8695: Include the right header
2018-03-19 01:50:31 +01:00
gpio-loongson1.c
gpio: loongson1: fix bgpio usage
2017-10-25 11:25:38 +02:00
gpio-loongson.c
gpio: loongson: Use BIT() macros
2018-05-16 14:35:24 +02:00
gpio-lp873x.c
gpio: lp873x: Include the right header
2018-05-16 14:35:24 +02:00
gpio-lp3943.c
gpio: lp3943: Include the right header
2018-05-16 14:35:24 +02:00
gpio-lp87565.c
gpio: lp87565: Set proper output level and direction for direction_output
2017-07-31 15:26:57 +02:00
gpio-lpc18xx.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-lpc32xx.c
gpio: lpc32xx: Include the right header
2018-05-16 14:35:24 +02:00
gpio-lynxpoint.c
gpio: lynxpoint: Include the right header
2018-05-16 14:35:24 +02:00
gpio-madera.c
gpio: madera: Support Cirrus Logic Madera class codecs
2018-06-05 11:15:30 +01:00
gpio-max730x.c
gpio: max730x: Include the right header
2018-05-16 14:35:24 +02:00
gpio-max732x.c
gpio: max732x: add error handling for i2c_new_dummy
2018-06-18 07:55:30 +02:00
gpio-max3191x.c
gpio: Remove VLA from MAX3191X driver
2018-03-27 15:18:06 +02:00
gpio-max7300.c
…
gpio-max7301.c
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
2018-12-29 13:37:56 +01:00
gpio-max77620.c
gpio: max77620: Fixup debounce delays
2019-12-01 09:16:09 +01:00
gpio-mb86s7x.c
gpio: mb86s70: Revert "Return error if requesting an already assigned gpio"
2017-10-31 13:13:34 +01:00
gpio-mc9s08dz60.c
gpio: mc9s08dz60: Include the right header
2018-05-16 14:35:24 +02:00
gpio-mc33880.c
gpio: mc33880: Include the right header
2018-05-16 14:35:24 +02:00
gpio-menz127.c
gpio: Fix wrong rounding in gpio-menz127
2018-06-18 07:55:30 +02:00
gpio-merrifield.c
gpio: merrifield: Delete an error message
2018-02-22 15:25:40 +01:00
gpio-ml-ioh.c
gpio: ml-ioh: Fix buffer underwrite on probe error path
2018-07-29 23:13:09 +02:00
gpio-mm-lantiq.c
gpio: mm-lantiq: Include the right header
2018-05-16 14:35:24 +02:00
gpio-mmio.c
gpio: mmio: Fix up inverted direction registers
2018-08-10 23:19:17 +02:00
gpio-mockup.c
gpio: mockup: fix indicated direction
2018-12-13 09:16:12 +01:00
gpio-mpc8xxx.c
gpio: mpc8xxx: Add platform device to gpiochip->parent
2020-01-17 19:47:14 +01:00
gpio-mpc5200.c
…
gpio-msic.c
gpio: msic: Include the right header
2018-05-16 14:35:24 +02:00
gpio-mt7621.c
gpio: MT7621: use a per instance irq_chip structure
2019-02-27 10:08:49 +01:00
gpio-mvebu.c
gpio: mvebu: only fail on missing clk if pwm is actually to be used
2019-01-13 09:51:03 +01:00
gpio-mxc.c
gpio: mxc: add check to return defer probe if clock tree NOT ready
2019-05-08 07:21:53 +02:00
gpio-mxs.c
gpio: mxs: Get rid of external API call
2018-11-13 11:08:14 -08:00
gpio-octeon.c
gpio: octeon: Include the right header
2018-05-24 14:22:04 +02:00
gpio-omap.c
gpio: omap: ensure irq is enabled before wakeup
2019-07-26 09:14:06 +02:00
gpio-palmas.c
gpio: palmas: Include the right header
2018-05-24 14:25:13 +02:00
gpio-pca953x.c
gpio: pca953x: Fix AI overflow on PCAL6524
2019-12-05 09:20:15 +01:00
gpio-pcf857x.c
gpio: pcf857x: Fix interrupts on multiple instances
2019-02-06 17:30:12 +01:00
gpio-pch.c
gpio: pch: Include the right header
2018-05-24 17:09:41 +02:00
gpio-pci-idio-16.c
gpio: pci-idio-16: Fix port memory offset for get_multiple callback
2018-04-27 00:55:16 +02:00
gpio-pcie-idio-24.c
gpio: pcie-idio-24: Fix off-by-one error in get_multiple loop
2018-04-30 10:48:08 +02:00
gpio-pisosr.c
gpio-pisosr: add support for get_multiple
2018-07-29 21:55:33 +02:00
gpio-pl061.c
gpio: pl061: Move irq_chip definition inside struct pl061
2019-01-26 09:32:33 +01:00
gpio-pmic-eic-sprd.c
gpio: pmic_eic: Add edge trigger emulation for PMIC EIC
2018-05-16 14:35:24 +02:00
gpio-pxa.c
gpio: pxa: handle corner case of unprobed device
2019-04-20 09:16:00 +02:00
gpio-raspberrypi-exp.c
gpio: raspberrypi-exp: decrease refcount on firmware dt node
2019-12-05 09:20:24 +01:00
gpio-rc5t583.c
gpio: rc5t583: Include the right header
2018-07-02 16:00:49 +02:00
gpio-rcar.c
gpio: rcar: Implement .get_direction() callback
2018-07-13 10:55:26 +02:00
gpio-rdc321x.c
gpio: rdc321x: Include the right header
2018-07-02 16:00:49 +02:00
gpio-reg.c
gpio: gpio-reg: fix build
2017-12-22 15:24:31 +01:00
gpio-sa1100.c
gpio: sa1100: Include the right header
2018-07-02 16:00:49 +02:00
gpio-sch311x.c
gpio: sch311x: Replace unsigned char with u8
2018-07-02 16:00:49 +02:00
gpio-sch.c
gpio: sch: Implement .get_direction()
2018-07-02 16:00:49 +02:00
gpio-sodaville.c
gpio: sodaville: use resource management for irqs
2017-03-15 11:16:36 +01:00
gpio-spear-spics.c
gpio: spear-spics: Include the right header
2018-07-02 16:00:49 +02:00
gpio-sprd.c
gpio: Add GPIO driver for Spreadtrum SC9860 platform
2018-03-02 11:00:43 +01:00
gpio-sta2x11.c
gpio: sta2x11: Inline regs macro
2018-07-02 16:00:49 +02:00
gpio-stmpe.c
gpio: stmpe: Include the right header
2018-07-02 16:00:49 +02:00
gpio-stp-xway.c
gpio: stp-xway: Include the right header
2018-07-02 16:00:49 +02:00
gpio-syscon.c
gpio: syscon: Fix possible NULL ptr usage
2019-11-24 08:20:54 +01:00
gpio-tb10x.c
gpio: tb10x: Use the right include
2018-08-10 23:04:27 +02:00
gpio-tc3589x.c
gpio: Move irqdomain into struct gpio_irq_chip
2017-11-08 14:06:21 +01:00
gpio-tegra186.c
gpio: tegra186: Add support for Tegra194
2018-07-02 16:01:02 +02:00
gpio-tegra.c
This is the bulk of GPIO changes for the v4.19 kernel cycle:
2018-08-15 21:35:38 -07:00
gpio-thunderx.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
gpio-timberdale.c
gpio: timberdale: Include the right header
2018-08-10 23:04:27 +02:00
gpio-tpic2810.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-tps6586x.c
…
gpio-tps65086.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-tps65218.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-tps65910.c
…
gpio-tps65912.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-tps68470.c
gpio: tps68470: Update to SPDX license identifier
2018-02-23 15:26:42 +01:00
gpio-ts4800.c
gpio: ts4800: Fix module autoload
2016-10-21 14:55:07 +02:00
gpio-ts4900.c
gpio: ts4900: Use of_device_get_match_data()
2018-05-16 14:35:24 +02:00
gpio-ts5500.c
…
gpio-twl4030.c
mfd: twl: Move header file out of I2C realm
2017-09-04 14:41:02 +01:00
gpio-twl6040.c
gpio: twl6040: remove unneeded forward declaration
2017-08-23 10:20:16 +02:00
gpio-ucb1400.c
…
gpio-uniphier.c
This is the bulk of GPIO changes for the v4.19 kernel cycle:
2018-08-15 21:35:38 -07:00
gpio-vf610.c
gpio: vf610: Do not share irq_chip
2019-06-15 11:54:11 +02:00
gpio-viperboard.c
…
gpio-vr41xx.c
gpio: vr41xx: Bail out on gpiochip_lock_as_irq() error
2018-08-06 23:46:55 +02:00
gpio-vx855.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-wcove.c
gpio: Move irqdomain into struct gpio_irq_chip
2017-11-08 14:06:21 +01:00
gpio-winbond.c
gpio: winbond: Add driver
2018-01-09 14:51:00 +01:00
gpio-wm831x.c
gpio-wm831x: Use seq_putc() in wm831x_gpio_dbg_show()
2018-02-12 09:36:06 +01:00
gpio-wm8350.c
gpio: constify gpio_chip structures
2016-09-13 10:35:56 +02:00
gpio-wm8994.c
pinctrl / gpio: Introduce .set_config() callback for GPIO chips
2017-01-26 15:27:37 +01:00
gpio-ws16c48.c
gpio: ws16c48: Implement get_multiple callback
2018-03-26 10:28:19 +02:00
gpio-xgene-sb.c
gpio: xgene-sb: Don't shadow error code of gpiochip_lock_as_irq()
2018-08-06 23:46:55 +02:00
gpio-xgene.c
gpio: xgene: mark PM functions as __maybe_unused
2017-03-06 14:35:22 +01:00
gpio-xilinx.c
gpio: xilinx: Use the right include
2018-08-10 23:19:17 +02:00
gpio-xlp.c
gpio: xlp: Use of_device_get_match_data()
2018-05-16 14:35:24 +02:00
gpio-xra1403.c
gpio: xra1403: Switch to a fixed upper bound for registers
2018-04-27 01:06:21 +02:00
gpio-xtensa.c
…
gpio-zevio.c
gpio: zevio: make gpio_chip const
2017-08-23 09:21:54 +02:00
gpio-zx.c
gpio: Move irqdomain into struct gpio_irq_chip
2017-11-08 14:06:21 +01:00
gpio-zynq.c
gpio: zynq: Report gpio direction at boot
2020-02-14 16:33:24 -05:00
gpiolib-acpi.c
gpiolib: acpi: Add honor_wakeup module-option + quirk mechanism
2020-01-14 20:07:03 +01:00
gpiolib-devprop.c
gpio: fix "gpio-line-names" property retrieval
2017-12-22 15:24:31 +01:00
gpiolib-legacy.c
…
gpiolib-of.c
gpio: of: Fix of_gpiochip_add() error path
2019-05-04 09:20:21 +02:00
gpiolib-sysfs.c
gpio: sysfs: avoid using kstrtol() in 'value' attribute write
2017-12-20 10:34:58 +01:00
gpiolib.c
gpio: Fix error message on out-of-range GPIO in lookup table
2020-01-17 19:47:00 +01:00
gpiolib.h
gpiolib: Mark gpio_suffixes array with __maybe_unused
2018-07-13 09:00:08 +02:00
Kconfig
gpio: max77620: Add missing dependency on GPIOLIB_IRQCHIP
2020-02-01 09:37:09 +00:00
Makefile
- New Drivers
2018-08-20 15:38:44 -07:00