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Ian Ray 58a5c93bd1 gpio: pca953x: fix pca953x_irq_bus_sync_unlock race 
[ Upstream commit bfc6444b57dc7186b6acc964705d7516cbaf3904 ]

Ensure that `i2c_lock' is held when setting interrupt latch and mask in
pca953x_irq_bus_sync_unlock() in order to avoid races.

The other (non-probe) call site pca953x_gpio_set_multiple() ensures the
lock is held before calling pca953x_write_regs().

The problem occurred when a request raced against irq_bus_sync_unlock()
approximately once per thousand reboots on an i.MX8MP based system.

 * Normal case

   0-0022: write register AI|3a {03,02,00,00,01} Input latch P0
   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0
   0-0022: write register AI|08 {ff,00,00,00,00} Output P3
   0-0022: write register AI|12 {fc,00,00,00,00} Config P3

 * Race case

   0-0022: write register AI|08 {ff,00,00,00,00} Output P3
   0-0022: write register AI|08 {03,02,00,00,01} *** Wrong register ***
   0-0022: write register AI|12 {fc,00,00,00,00} Config P3
   0-0022: write register AI|49 {fc,fd,ff,ff,fe} Interrupt mask P0

Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
Link: https://lore.kernel.org/r/20240620042915.2173-1-ian.ray@gehealthcare.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-25 09:49:15 +02:00
..
gpio-74x164.c
gpio: 74x164: Enable output pins after registers are reset
2024-03-06 14:45:19 +00:00
gpio-74xx-mmio.c
gpio: 74xx-mmio: Use bits instead of plain numbers for flags
2022-07-28 15:47:56 +02:00
gpio-104-dio-48e.c
gpio updates for v6.1-rc1
2022-10-08 09:46:29 -07:00
gpio-104-idi-48.c
gpio updates for v6.1-rc1
2022-10-08 09:46:29 -07:00
gpio-104-idio-16.c
gpio updates for v6.1-rc1
2022-10-08 09:46:29 -07:00
gpio-adnp.c
gpio: adnp: Make use of device properties
2022-07-19 09:57:13 +02:00
gpio-adp5520.c
gpio: adp5520: cleanup probe error path + remove platform_set_drvdata()
2021-05-21 15:29:53 +02:00
gpio-aggregator.c
gpio: aggregator: Fix calling into sleeping GPIO controllers
2022-02-02 11:53:46 +01:00
gpio-altera-a10sr.c
gpio: altera-a10sr: Switch to use fwnode instead of of_node
2022-01-24 17:23:15 +02:00
gpio-altera.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-amd8111.c
gpio: amd8111: Fix PCI device reference count leak
2022-11-30 17:18:35 +01:00
gpio-amd-fch.c
…
gpio-amdpt.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-arizona.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-aspeed-sgpio.c
gpio updates for v5.17
2022-01-11 12:31:35 -08:00
gpio-aspeed.c
gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config()
2023-10-10 22:00:45 +02:00
gpio-ath79.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-bcm-kona.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_30.RULE (part 2)
2022-06-10 14:51:35 +02:00
gpio-bd9571mwv.c
gpio: bd9571mwv: remove platform_set_drvdata() + cleanup probe
2021-05-21 15:43:26 +02:00
gpio-bd71815.c
gpio: Support ROHM BD71815 GPOs
2021-04-14 10:19:22 +01:00
gpio-bd71828.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-brcmstb.c
gpio: updates for v6.0-rc1
2022-08-04 18:34:05 -07:00
gpio-bt8xx.c
…
gpio-cadence.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-clps711x.c
…
gpio-creg-snps.c
gpio: Setup parent device and get rid of unnecessary of_node assignment
2021-12-17 17:44:19 +01:00
gpio-crystalcove.c
gpio: crystalcove: Use -ENOTSUPP consistently
2024-05-17 11:56:09 +02:00
gpio-cs5535.c
gpio: cs5535: Simplify the return expression of cs5535_gpio_probe()
2020-12-12 01:37:46 +01:00
gpio-da9052.c
gpio: da9052: remove platform_set_drvdata() + cleanup probe
2021-05-23 20:32:09 +02:00
gpio-da9055.c
gpio: da9055: remove platform_set_drvdata() + cleanup probe
2021-05-21 14:45:57 +02:00
gpio-davinci.c
gpio: davinci: Validate the obtained number of IRQs
2024-07-05 09:31:50 +02:00
gpio-dln2.c
gpio: dln2: make irq_chip immutable
2022-06-06 14:09:16 +03:00
gpio-dwapb.c
gpio: dwapb: mask/unmask IRQ when disable/enale it
2024-01-01 12:39:07 +00:00
gpio-eic-sprd.c
gpio: eic-sprd: Clear interrupt after set the interrupt type
2024-01-31 16:17:11 -08:00
gpio-em.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-en7523.c
gpio: Add support for Airoha EN7523 GPIO controller
2022-02-02 10:16:19 +01:00
gpio-ep93xx.c
gpio: ep93xx: Fix port F hwirq numbers in handler
2023-02-01 08:34:47 +01:00
gpio-exar.c
gpio: exar: access MPIO registers on cascaded chips
2022-09-04 22:25:10 +02:00
gpio-f7188x.c
gpio-f7188x: fix chip name and pin count on Nuvoton chip
2023-06-05 09:26:18 +02:00
gpio-ftgpio010.c
gpio: ftgpio010: Make irqchip immutable
2022-09-20 16:10:53 +02:00
gpio-ge.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-gpio-mm.c
gpio: gpio-mm: Implement and utilize register structures
2022-07-20 17:44:47 +02:00
gpio-grgpio.c
gpio: grgpio: Fix device removing
2022-06-23 16:42:27 +02:00
gpio-gw-pld.c
gpio: Remove unused local OF node pointers
2021-12-22 10:05:26 +01:00
gpio-hisi.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-hlwd.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-htc-egpio.c
…
gpio-i8255.c
gpio: i8255: Introduce the Intel 8255 interface library module
2022-07-20 17:44:36 +02:00
gpio-i8255.h
gpio: i8255: Introduce the Intel 8255 interface library module
2022-07-20 17:44:36 +02:00
gpio-ich.c
gpio: ich: Switch to be dependent on LPC_ICH
2021-05-05 16:07:41 +02:00
gpio-idt3243x.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-imx-scu.c
gpio: imx-scu: add imx-scu GPIO driver
2022-08-31 17:21:23 +02:00
gpio-iop.c
…
gpio-it87.c
gpio: it87: remove unused code
2021-05-05 16:07:41 +02:00
gpio-ixp4xx.c
gpio: ixp4xx: Make irqchip immutable
2022-09-13 16:17:45 +02:00
gpio-janz-ttl.c
…
gpio-kempld.c
…
gpio-logicvc.c
gpio: logicvc: Remove redundant error printing in logicvc_gpio_probe()
2021-05-12 13:35:39 +02:00
gpio-loongson1.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-loongson.c
…
gpio-lp873x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
2022-06-10 14:51:36 +02:00
gpio-lp3943.c
gpio: lp3943: unsigned to unsigned int cleanup
2022-07-19 09:57:40 +02:00
gpio-lp87565.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
2022-06-10 14:51:36 +02:00
gpio-lpc18xx.c
…
gpio-lpc32xx.c
gpio: Setup parent device and get rid of unnecessary of_node assignment
2021-12-17 17:44:19 +01:00
gpio-madera.c
…
gpio-max730x.c
gpio: max730x: Make __max730x_remove() return void
2021-10-13 19:52:26 +02:00
gpio-max732x.c
gpio: max732x: Drop unused support for irq and setup code via platform data
2022-05-05 14:37:17 +02:00
gpio-max3191x.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
gpio-max7300.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
gpio-max7301.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
gpio-max77620.c
gpio: max77620: Make the irqchip immutable
2022-05-05 14:56:37 +02:00
gpio-max77650.c
…
gpio-mb86s7x.c
…
gpio-mc33880.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
gpio-menz127.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-merrifield.c
gpio: merrifield: make irq_chip immutable
2022-06-06 14:09:16 +03:00
gpio-ml-ioh.c
gpio: ml-ioh: Convert to use managed functions pcim* and devm_*
2022-05-20 19:20:35 +02:00
gpio-mlxbf2.c
gpio: mlxbf2: Use generic_handle_irq_safe()
2022-09-19 15:08:38 +02:00
gpio-mlxbf.c
…
gpio-mm-lantiq.c
…
gpio-mmio.c
gpio: use raw spinlock for gpio chip shadowed data
2022-04-25 12:10:02 +02:00
gpio-mockup.c
gpio: mockup: Fix mode of debugfs files
2023-05-30 14:03:18 +01:00
gpio-moxtet.c
treewide: change my e-mail address, fix my name
2021-04-09 14:54:23 -07:00
gpio-mpc8xxx.c
gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type in mpc85xx
2022-09-07 13:17:23 +02:00
gpio-mpc5200.c
…
gpio-msc313.c
gpio: Remove dynamic allocation from populate_parent_alloc_arg()
2022-07-10 09:30:00 +01:00
gpio-mt7621.c
gpio updates for v6.1-rc1
2022-10-08 09:46:29 -07:00
gpio-mvebu.c
gpio: mvebu: fix irq domain leak
2023-08-03 10:23:49 +02:00
gpio-mxc.c
gpio: mxc: Unlock on error path in mxc_flip_edge()
2023-02-01 08:34:47 +01:00
gpio-mxs.c
gpio: mxs: Fix header comment
2022-06-23 23:18:13 +02:00
gpio-octeon.c
…
gpio-omap.c
gpio: omap: Move PM device over to irq domain
2022-02-09 13:36:53 +00:00
gpio-palmas.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-pca953x.c
gpio: pca953x: fix pca953x_irq_bus_sync_unlock race
2024-07-25 09:49:15 +02:00
gpio-pca9570.c
gpio: pca9570: add pca9571 support
2022-07-19 09:57:13 +02:00
gpio-pcf857x.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
gpio-pch.c
gpio: pch: Change PCI device macros
2022-06-21 18:01:11 +03:00
gpio-pci-idio-16.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-pcie-idio-24.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-pisosr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
2022-06-10 14:51:36 +02:00
gpio-pl061.c
gpio: pl061: Make the irqchip immutable
2022-04-19 15:22:26 +01:00
gpio-pmic-eic-sprd.c
gpio: pmic-eic-sprd: Add can_sleep flag for PMIC EIC chip
2023-10-06 14:56:50 +02:00
gpio-pxa.c
gpio: pxa: disable pinctrl calls for MMP_GPIO
2023-10-10 22:00:45 +02:00
gpio-raspberrypi-exp.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-rc5t583.c
…
gpio-rcar.c
gpio: rcar: Make the irqchip immutable
2022-05-24 16:35:49 +02:00
gpio-rda.c
gpio: Remove unused local OF node pointers
2021-12-22 10:05:26 +01:00
gpio-rdc321x.c
…
gpio-realtek-otto.c
gpio: realtek-otto: switch to 32-bit I/O
2022-08-31 17:46:30 +02:00
gpio-reg.c
…
gpio-regmap.c
gpio: regmap: Switch to use fwnode instead of of_node
2021-12-23 17:14:19 +01:00
gpio-rockchip.c
gpio/rockchip: fix refcount leak in rockchip_gpiolib_register()
2022-12-06 10:10:46 +01:00
gpio-sa1100.c
…
gpio-sama5d2-piobu.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-sch311x.c
…
gpio-sch.c
gpio: sch: make irq_chip immutable
2022-06-06 14:09:16 +03:00
gpio-sifive.c
gpio: sifive: add missing check for platform_get_irq
2023-06-28 11:12:34 +02:00
gpio-sim.c
gpio: sim: pass the GPIO device's software node to irq domain
2023-08-30 16:11:13 +02:00
gpio-siox.c
…
gpio-sl28cpld.c
gpio: sl28cpld: convert comma to semicolon
2021-02-15 11:43:26 +01:00
gpio-sodaville.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-spear-spics.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)
2022-06-10 14:51:35 +02:00
gpio-sprd.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-sta2x11.c
gpio: sta2x11: fix typo in a comment
2021-12-17 12:26:13 +01:00
gpio-stmpe.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-stp-xway.c
…
gpio-syscon.c
gpio: syscon: Remove usage of syscon_regmap_lookup_by_compatible
2022-05-02 10:41:33 +02:00
gpio-tb10x.c
gpio: tb10x: Fix an error handling path in tb10x_gpio_probe()
2023-10-06 14:56:43 +02:00
gpio-tc3589x.c
gpio: tc3589x: Make irqchip immutable
2022-10-03 20:56:46 +02:00
gpio-tegra186.c
gpio: Remove dynamic allocation from populate_parent_alloc_arg()
2022-07-10 09:30:00 +01:00
gpio-tegra.c
gpio: tegra: Convert to immutable irq chip
2022-10-20 13:47:54 +02:00
gpio-thunderx.c
gpio: thunderx: Don't directly include asm-generic/msi.h
2022-07-11 09:15:58 +01:00
gpio-timberdale.c
gpio: timberdale: Fix potential deadlock on &tgpio->lock
2023-10-25 12:03:09 +02:00
gpio-tn48m.c
gpio: Add Delta TN48M CPLD GPIO driver
2022-02-25 09:59:35 +01:00
gpio-tpic2810.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
gpio-tps6586x.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-tps65086.c
…
gpio-tps65218.c
gpio: Get rid of duplicate of_node assignment in the drivers
2021-12-17 17:39:35 +01:00
gpio-tps65910.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-tps65912.c
gpio: tps65912: remove platform_set_drvdata() + cleanup probe
2021-05-24 20:58:46 +02:00
gpio-tps68470.c
gpio: tps68470: Make tps68470_gpio_output() always set the initial value
2023-08-03 10:23:48 +02:00
gpio-tqmx86.c
gpio: tqmx86: fix broken IRQ_TYPE_EDGE_BOTH interrupt type
2024-06-21 14:35:49 +02:00
gpio-ts4800.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2)
2022-06-10 14:51:35 +02:00
gpio-ts4900.c
gpio fixes for v5.18-rc1
2022-04-01 10:26:09 -07:00
gpio-ts5500.c
gpio: ts5500: Fix Links to Technologic Systems web resources
2022-03-31 16:44:57 +02:00
gpio-twl4030.c
gpio: twl4030: Reorder functions which allows to drop a forward declaraion
2022-09-20 09:02:08 +02:00
gpio-twl6040.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-ucb1400.c
gpio: ucb1400: Use proper header
2022-08-31 13:37:32 +02:00
gpio-uniphier.c
gpio updates for v5.16
2021-11-08 11:55:21 -08:00
gpio-vf610.c
gpio: vf610: mask the gpio irq in system suspend and support wakeup
2023-10-25 12:03:16 +02:00
gpio-viperboard.c
gpio: viperboard: remove platform_set_drvdata() call in probe
2021-08-31 11:29:28 +02:00
gpio-virtio.c
virtio: wrap config->reset calls
2022-01-14 18:50:52 -05:00
gpio-visconti.c
gpio: Remove dynamic allocation from populate_parent_alloc_arg()
2022-07-10 09:30:00 +01:00
gpio-vx855.c
gpio: vx855: convert comma to semicolon
2021-02-15 11:43:29 +01:00
gpio-wcd934x.c
gpio: wcd934x: Fix shift-out-of-bounds error
2021-05-27 09:51:35 +02:00
gpio-wcove.c
gpio: wcove: Use -ENOTSUPP consistently
2024-05-17 11:56:09 +02:00
gpio-winbond.c
gpio: winbond: Fix error code in winbond_gpio_get()
2022-06-23 16:29:55 +02:00
gpio-wm831x.c
gpio: Propagate firmware node from a parent device
2021-12-17 17:50:46 +01:00
gpio-wm8350.c
gpio: wm8350: remove platform_set_drvdata() + cleanup probe
2021-05-25 16:21:28 +02:00
gpio-wm8994.c
gpio: wm8994: remove platform_set_drvdata() + cleanup probe
2021-05-25 16:21:14 +02:00
gpio-ws16c48.c
gpio: ws16c48: Fix off-by-one error in WS16C48 resource region extent
2023-08-16 18:27:29 +02:00
gpio-xgene-sb.c
…
gpio-xgene.c
gpio: xgene: simplify probe, return devm_gpiochip_add_data() directly
2021-05-23 20:30:26 +02:00
gpio-xgs-iproc.c
gpio: xgs-iproc: Drop if with an always false condition
2022-07-19 09:57:13 +02:00
gpio-xilinx.c
gpio: updates for v6.0-rc1
2022-08-04 18:34:05 -07:00
gpio-xlp.c
gpio: xlp: Fix build errors from Netlogic XLP removal
2021-12-03 16:00:40 +01:00
gpio-xra1403.c
…
gpio-xtensa.c
…
gpio-zevio.c
gpio: zevio: drop of_gpio.h header
2022-05-14 14:41:21 +02:00
gpio-zynq.c
gpio: Bulk conversion to generic_handle_domain_irq()
2021-08-12 11:39:38 +01:00
gpio-zynqmp-modepin.c
gpio: modepin: Add driver support for modepin GPIO controller
2021-09-23 10:09:58 +02:00
gpiolib-acpi.c
gpiolib: acpi: Ignore touchpad wakeup on GPD G1619-04
2024-01-31 16:17:08 -08:00
gpiolib-acpi.h
gpiolib: acpi: Add wake_capable variants of acpi_dev_gpio_irq_get
2022-10-04 15:41:12 +02:00
gpiolib-cdev.c
gpiolib: cdev: Disallow reconfiguration without direction (uAPI v1)
2024-07-05 09:31:51 +02:00
gpiolib-cdev.h
…
gpiolib-devres.c
gpiolib: devres: Get rid of unused devm_gpio_free()
2022-07-19 09:56:34 +02:00
gpiolib-legacy.c
…
gpiolib-of.c
gpiolib: fix OOB access in quirk callbacks
2022-09-20 08:30:57 +02:00
gpiolib-of.h
gpiolib: Bind gpio_device to a driver to enable fw_devlink=on by default
2021-01-27 16:04:10 +01:00
gpiolib-sysfs.c
gpiolib: sysfs: Fix error handling on failed export
2023-12-13 18:39:24 +01:00
gpiolib-sysfs.h
…
gpiolib.c
gpio: fix resource unwinding order in error path
2024-03-06 14:45:19 +00:00
gpiolib.h
gpiolib: protect the GPIO device against being dropped while in use by user-space
2022-12-31 13:32:42 +01:00
Kconfig
gpio: tqmx86: fix typo in Kconfig label
2024-06-21 14:35:48 +02:00
Makefile
Input updates for 6.1 merge window:
2022-10-11 10:53:25 -07:00
TODO
gpio: Update TODO to mention immutable irq_chip structures
2022-04-19 15:22:26 +01:00