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Johan Hovold ccc942eaf5 gpio: fix gpio-device list corruption 
commit cf25ef6b631c6fc6c0435fc91eba8734cca20511 upstream.

Make sure to hold the gpio_lock when removing the gpio device from the
gpio_devices list (when dropping the last reference) to avoid corrupting
the list when there are concurrent accesses.

Fixes: ff2b13592299 ("gpio: make the gpiochip a real device")
Cc: stable@vger.kernel.org      # 4.6
Reviewed-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[ johan: adjust context to 5.11 ]
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-17 17:06:18 +01:00
..
gpio-74x164.c
gpio: 74x164: utilize the for_each_set_clump8 macro
2019-12-04 19:44:12 -08:00
gpio-74xx-mmio.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-104-dio-48e.c
gpio: 104-dio-48e: Use irqchip template
2020-07-23 15:09:26 +02:00
gpio-104-idi-48.c
gpio: 104-idi-48: Use irqchip template
2020-07-23 15:09:54 +02:00
gpio-104-idio-16.c
gpio: 104-idio-16: Use irqchip template
2020-07-23 15:10:25 +02:00
gpio-adnp.c
gpio: adnp: Use irqchip template
2020-07-20 15:34:59 +02:00
gpio-adp5520.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149
2019-05-30 11:25:18 -07:00
gpio-adp5588.c
gpio: adp5588: Use irqchip template
2020-07-20 15:47:50 +02:00
gpio-aggregator.c
gpio: aggregator: Refactor ->{get, set}_multiple() to make Sparse happy
2020-08-18 21:39:39 +02:00
gpio-altera-a10sr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
gpio-altera.c
gpio: gpio-altera: Add missing kerneldoc entry and demote comment
2020-07-08 09:24:07 +02:00
gpio-amd8111.c
…
gpio-amd-fch.c
gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION
2020-09-28 12:22:04 +02:00
gpio-amdpt.c
Bulk GPIO changes for the v5.3 kernel cycle:
2019-07-09 09:07:00 -07:00
gpio-arizona.c
gpio: arizona: disable pm_runtime in case of failure
2020-12-02 10:40:54 +01:00
gpio-aspeed-sgpio.c
Some late GPIO fixes for the v5.9 series:
2020-10-02 09:51:42 -07:00
gpio-aspeed.c
gpio: aspeed: fix ast2600 bank properties
2020-10-26 15:51:57 +01:00
gpio-ath79.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
gpio-bcm-kona.c
gpio: bcm-kona: Simplify with dev_err_probe()
2020-08-28 20:13:51 +02:00
gpio-bd9571mwv.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-bd70528.c
This is the bulk of GPIO changes for the v5.5 kernel cycle
2019-12-01 17:56:50 -08:00
gpio-bd71828.c
gpio: bd71828: Remove unneeded defines for GPIO_LINE_DIRECTION_IN/OUT
2020-02-10 10:55:18 +01:00
gpio-brcmstb.c
gpio: brcmstb: support gpio-line-names property
2020-03-26 00:02:03 +01:00
gpio-bt8xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
gpio-cadence.c
gpio: cadence: Pass irqchip when adding gpiochip
2019-08-15 09:44:19 +02:00
gpio-clps711x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
gpio-creg-snps.c
gpio: aspeed-sgpio: fixed typos
2020-01-23 16:16:05 +01:00
gpio-crystalcove.c
gpio: crystalcove: Free IRQ on error path
2020-08-04 01:25:02 +02:00
gpio-cs5535.c
docs: driver-model: move it to the driver-api book
2019-07-15 11:03:02 -03:00
gpio-da9052.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
gpio-da9055.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
gpio-davinci.c
gpio: davinci: Simplify with dev_err_probe()
2020-08-28 20:15:06 +02:00
gpio-dln2.c
gpio: dln2: Use irqchip template
2020-07-23 15:03:25 +02:00
gpio-dwapb.c
gpio: dwapb: fix NULL pointer dereference at dwapb_gpio_suspend()
2020-12-02 10:40:54 +01:00
gpio-eic-sprd.c
gpio: eic-sprd: break loop when getting NULL device resource
2020-12-09 09:41:49 +01:00
gpio-em.c
gpio: em: Use platform_get_irq() to obtain interrupts
2019-11-13 13:47:48 +01:00
gpio-ep93xx.c
gpio: ep93xx: Fix single irqchip with multi gpiochips
2021-02-17 11:02:20 +01:00
gpio-exar.c
gpio: exar: Fix bad handling for ida_simple_get error path
2020-05-05 18:24:56 +02:00
gpio-f7188x.c
gpio-f7188x: Add GPIO support for F81865
2020-05-05 18:22:26 +02:00
gpio-ftgpio010.c
gpio: ftgpio010: Fix small typo
2020-04-28 15:50:28 +02:00
gpio-ge.c
…
gpio-gpio-mm.c
gpio: gpio-mm: utilize for_each_set_clump8 macro
2019-12-04 19:44:12 -08:00
gpio-grgpio.c
gpio: Remove the unused flags
2020-01-15 11:24:19 +01:00
gpio-gw-pld.c
gpio: Add a Gateworks PLD GPIO driver
2019-02-09 11:33:37 +01:00
gpio-hlwd.c
gpio: hlwd: Pass irqchip when adding gpiochip
2019-08-15 09:57:29 +02:00
gpio-htc-egpio.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-ich.c
gpio: ich: changed every 'unsigned' to 'unsigned int'
2020-07-22 16:00:27 +03:00
gpio-intel-mid.c
gpio: intel-mid: Move hardware initialization to callback
2019-10-15 01:18:51 +02:00
gpio-iop.c
Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2019-07-15 21:10:39 -07:00
gpio-it87.c
gpio: gpio-it87: Fix formatting issues which confuse kerneldoc
2020-07-08 09:24:08 +02:00
gpio-ixp4xx.c
gpio: updates for v5.4
2019-09-03 16:04:19 +02:00
gpio-janz-ttl.c
Bulk GPIO changes for the v5.3 kernel cycle:
2019-07-09 09:07:00 -07:00
gpio-kempld.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-logicvc.c
gpio: Add support for the Xylon LogiCVC GPIOs
2019-12-13 09:50:29 +01:00
gpio-loongson1.c
drivers: gpio: loongon1: use devm_platform_ioremap_resource()
2019-04-05 00:04:26 +07:00
gpio-loongson.c
MIPS: Loongson64: Rename CPU TYPES
2019-10-31 15:03:10 -07:00
gpio-lp873x.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-lp3943.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372
2019-06-05 17:37:10 +02:00
gpio-lp87565.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-lpc18xx.c
drivers: gpio: lpc18xx: use devm_platform_ioremap_resource()
2019-04-05 00:04:26 +07:00
gpio-lpc32xx.c
gpio: lpc32xx: allow building on non-lpc32xx targets
2019-08-15 21:33:07 +02:00
gpio-madera.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-max730x.c
gpio: max730x: bring gpiochip_add_data after port config
2020-05-22 17:01:25 +02:00
gpio-max732x.c
gpio: max732x: Use irqchip template
2020-08-04 01:12:43 +02:00
gpio-max3191x.c
gpio: max3191x: utilize the for_each_set_clump8 macro
2019-12-04 19:44:13 -08:00
gpio-max7300.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
gpio-max7301.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
gpio-max77620.c
gpio: max77620: Use helper variable and clarify
2020-07-17 14:03:38 +02:00
gpio-max77650.c
gpio: max77650: add MODULE_ALIAS()
2019-07-29 00:03:52 +02:00
gpio-mb86s7x.c
gpio: mb86s7x: Remove superfluous test for ACPI companion
2020-05-18 09:15:16 +02:00
gpio-mc9s08dz60.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
gpio-mc33880.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176
2019-05-30 11:29:19 -07:00
gpio-menz127.c
drivers: mcb: use symbol namespaces
2019-11-03 19:54:53 +01:00
gpio-merrifield.c
gpio: merrifield: Better show how GPIO and IRQ bases are derived from hardware
2020-04-16 20:41:06 +03:00
gpio-ml-ioh.c
gpio: gpio-ml-ioh: Fix missing ':' in 'struct ioh_gpio_reg_data
2020-06-30 17:00:11 +03:00
gpio-mlxbf2.c
gpio: gpio-mlxbf2.c: Provide __releases() annotation to stop confusing Sparse
2020-07-08 09:24:08 +02:00
gpio-mlxbf.c
gpio: gpio-mlxbf: Tell the compiler that ACPI functions may not be used
2020-07-08 09:24:08 +02:00
gpio-mm-lantiq.c
gpio: mm-lantiq: Fix small typo
2020-04-28 22:41:25 +02:00
gpio-mmio.c
gpio: mmio: replace open-coded for_each_set_bit()
2020-07-16 15:07:18 +02:00
gpio-mockup.c
gpio: mockup: refactor the module init function
2020-09-30 10:52:21 +02:00
gpio-moxtet.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-mpc8xxx.c
gpio: mpc8xxx: simplify ls1028a/ls1088a support
2020-09-30 10:50:30 +02:00
gpio-mpc5200.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
gpio-msic.c
gpio: msic: Convert to use SPDX identifier
2019-02-08 15:55:41 +02:00
gpio-mt7621.c
gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag
2020-03-25 09:50:45 +01:00
gpio-mvebu.c
gpio: mvebu: fix pwm .get_state period calculation
2021-01-30 13:55:16 +01:00
gpio-mxc.c
gpio: mxc: Support module build
2020-09-29 15:04:31 +02:00
gpio-mxs.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-octeon.c
drivers: gpio: octeon: use devm_platform_ioremap_resource()
2019-04-05 00:04:27 +07:00
gpio-omap.c
Revert "Revert "gpio: omap: Fix lost edge wake-up interrupts""
2020-10-28 16:40:47 +01:00
gpio-palmas.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
gpio-pca953x.c
gpio: pca953x: Set IRQ type when handle Intel Galileo Gen 2
2021-03-17 17:06:18 +01:00
gpio-pca9570.c
gpio: pca9570: add GPO driver for PCA9570
2020-07-16 14:35:12 +02:00
gpio-pcf857x.c
gpio: pcf857x: Fix missing first interrupt
2021-03-04 11:38:40 +01:00
gpio-pch.c
gpio: pch: Add a blank line between declaration and code
2020-07-21 19:12:57 +03:00
gpio-pci-idio-16.c
gpio: pci-idio-16: Use irqchip template
2020-07-23 15:11:26 +02:00
gpio-pcie-idio-24.c
gpio: pcie-idio-24: Enable PEX8311 interrupts
2020-11-06 15:19:44 +01:00
gpio-pisosr.c
gpio: pisosr: Simplify with dev_err_probe()
2020-08-28 20:15:51 +02:00
gpio-pl061.c
gpio: pl061: Support building as module
2020-04-14 16:23:46 +02:00
gpio-pmic-eic-sprd.c
gpio: gpio-pmic-eic-sprd: Fix incorrectly named property 'map'
2020-07-08 09:24:07 +02:00
gpio-pxa.c
gpio: pxa: Fix return value of pxa_gpio_probe()
2020-05-25 11:14:36 +02:00
gpio-raspberrypi-exp.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-rc5t583.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
gpio-rcar.c
gpio: rcar: Use irqchip template
2020-07-30 00:13:10 +02:00
gpio-rda.c
gpio: Add RDA Micro GPIO controller support
2019-10-29 15:12:52 +01:00
gpio-rdc321x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61
2019-05-24 17:36:45 +02:00
gpio-reg.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-regmap.c
gpio: add a reusable generic gpio_chip using regmap
2020-06-03 10:48:37 +02:00
gpio-sa1100.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-sama5d2-piobu.c
gpio: gpio-sama5d2-piobu: Demote all kerneldoc headers to basic comment blocks
2020-07-08 09:24:07 +02:00
gpio-sch311x.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-sch.c
gpio: sch: Add a blank line between declaration and code
2020-07-22 16:00:27 +03:00
gpio-sifive.c
gpio: sifive: Fix SiFive gpio probe
2020-11-11 09:53:09 +01:00
gpio-siox.c
gpio: siox: explicitly support only threaded irqs
2020-09-09 12:59:15 +02:00
gpio-sl28cpld.c
gpio: Add support for the sl28cpld GPIO controller
2020-09-17 16:00:20 +01:00
gpio-sodaville.c
gpio: sodaville: Convert to use SPDX identifier
2018-12-07 17:34:08 +02:00
gpio-spear-spics.c
drivers: gpio: spear-spics: use devm_platform_ioremap_resource()
2019-04-05 00:04:27 +07:00
gpio-sprd.c
gpio: sprd: Clear interrupt when setting the type as edge
2020-08-31 18:06:28 +02:00
gpio-sta2x11.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
gpio-stmpe.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
gpio-stp-xway.c
gpio: stp-xway: automatically drive GPHY leds on ar10 and grx390
2020-08-18 21:32:28 +02:00
gpio-syscon.c
gpio: gpio-syscon: Fix formatting issues which confuse kerneldoc
2020-07-08 09:24:08 +02:00
gpio-tb10x.c
gpio: remove unneeded MODULE_VERSION() usage
2019-12-12 17:09:50 +01:00
gpio-tc3589x.c
GPIO bulk changes for the v5.10 kernel cycle:
2020-10-13 10:09:33 -07:00
gpio-tegra186.c
gpio: tegra186: Allow optional irq parent callbacks
2020-10-10 12:12:10 +01:00
gpio-tegra.c
gpio: tegra: mask GPIO IRQs during IRQ shutdown
2020-04-28 16:22:33 +02:00
gpio-thunderx.c
gpio: thunderx: Switch to GPIOLIB_IRQCHIP
2020-01-15 11:18:29 +01:00
gpio-timberdale.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176
2019-05-30 11:29:19 -07:00
gpio-tpic2810.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-tps6586x.c
…
gpio-tps65086.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-tps65218.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111
2019-05-24 17:39:01 +02:00
gpio-tps65910.c
…
gpio-tps65912.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-tps68470.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-tqmx86.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-ts4800.c
drivers: gpio: ts4800: use devm_platform_ioremap_resource()
2019-04-05 00:04:28 +07:00
gpio-ts4900.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-ts5500.c
…
gpio-twl4030.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-twl6040.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-ucb1400.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
gpio-uniphier.c
gpio: uniphier: Replace zero-length array with flexible-array member
2020-03-02 08:52:55 +01:00
gpio-vf610.c
gpio: vf610: Pass irqchip when adding gpiochip
2019-08-23 09:41:18 +02:00
gpio-viperboard.c
gpio: viperboard: Replace 'unsigned' with 'unsigned int'
2019-08-05 11:26:58 +02:00
gpio-vr41xx.c
gpio: vr41xx: Use devm_platform_ioremap_resource()
2019-06-27 15:56:51 +01:00
gpio-vx855.c
gpio: vx855: fixed a typo
2020-01-15 13:45:01 +01:00
gpio-wcd934x.c
gpio: wcd934x: Fix logic of wcd_gpio_get
2020-02-10 10:50:58 +01:00
gpio-wcove.c
gpio: wcove: Request IRQ after all initialisation done
2020-08-04 01:25:02 +02:00
gpio-winbond.c
…
gpio-wm831x.c
…
gpio-wm8350.c
…
gpio-wm8994.c
…
gpio-ws16c48.c
gpio: ws16c48: Use irqchip template
2020-07-23 15:08:55 +02:00
gpio-xgene-sb.c
gpio: xgene-sb: Drop extra check to call acpi_gpiochip_request_interrupts()
2020-05-18 09:16:31 +02:00
gpio-xgene.c
gpio: Use new GPIO_LINE_DIRECTION
2019-11-07 09:27:48 +01:00
gpio-xgs-iproc.c
This is the bulk of pin control changes for the v5.6 kernel cycle:
2020-01-29 09:51:36 -08:00
gpio-xilinx.c
gpio: xilinx: Fix bug where the wrong GPIO register is written to
2020-02-10 12:52:34 +01:00
gpio-xlp.c
gpio: xlp: Pass irqchip when adding gpiochip
2019-08-15 09:55:07 +02:00
gpio-xra1403.c
gpio: xra1403: Make use of for_each_requested_gpio()
2020-06-20 23:13:27 +02:00
gpio-xtensa.c
gpio: xtensa: fix driver build
2019-12-09 10:40:18 +01:00
gpio-zevio.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
gpio-zx.c
gpio: Unconditionally assign .request()/.free()
2020-04-02 09:16:06 +02:00
gpio-zynq.c
gpio: zynq: fix reference leak in zynq_gpio functions
2020-12-02 10:41:02 +01:00
gpiolib-acpi.c
gpiolib: acpi: Allow to find GpioInt() resource by name and index
2021-03-17 17:06:18 +01:00
gpiolib-acpi.h
gpiolib: acpi: make acpi_can_fallback_to_crs() static
2019-09-10 11:34:20 +01:00
gpiolib-cdev.c
gpiolib: cdev: clear debounce period if line set to output
2021-02-13 13:55:01 +01:00
gpiolib-cdev.h
gpiolib: fix sysfs when cdev is not selected
2020-11-05 15:35:40 +01:00
gpiolib-devres.c
gpio: don't use same lockdep class for all devm_gpiochip_add_data users
2020-08-04 01:22:02 +02:00
gpiolib-legacy.c
gpio: Use SPDX header for core library
2018-09-25 09:08:48 +02:00
gpiolib-of.c
gpiolib: generalize devprop_gpiochip_set_names() for device properties
2020-09-14 10:54:01 +02:00
gpiolib-of.h
gpio: of: Add DT overlay support for GPIO hogs
2020-02-21 17:10:33 +01:00
gpiolib-sysfs.c
gpiolib: move gpiolib-sysfs function declarations into their own header
2020-07-12 10:22:00 +02:00
gpiolib-sysfs.h
gpiolib: move gpiolib-sysfs function declarations into their own header
2020-07-12 10:22:00 +02:00
gpiolib.c
gpio: fix gpio-device list corruption
2021-03-17 17:06:18 +01:00
gpiolib.h
gpiolib: cdev: support setting debounce
2020-09-30 10:57:04 +02:00
Kconfig
gpio: mxs: GPIO_MXS should not default to y unconditionally
2021-02-17 11:02:20 +01:00
Makefile
- New Drivers
2020-10-14 15:56:58 -07:00
TODO
drivers: gpio: Fix trivial spelling
2020-06-15 10:15:29 +02:00