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kernel_google_wahoo/drivers/gpio
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Maxim Kiselev 20c8e0e485 gpio: pcf857x: Fix missing first interrupt 
commit a8002a35935aaefcd6a42ad3289f62bab947f2ca upstream.

If no n_latch value will be provided at driver probe then all pins will
be used as an input:

    gpio->out = ~n_latch;

In that case initial state for all pins is "one":

    gpio->status = gpio->out;

So if pcf857x IRQ happens with change pin value from "zero" to "one"
then we miss it, because of "one" from IRQ and "one" from initial state
leaves corresponding pin unchanged:
change = (gpio->status ^ status) & gpio->irq_enabled;

The right solution will be to read actual state at driver probe.

Cc: stable@vger.kernel.org
Fixes: 6e20a0a429 ("gpio: pcf857x: enable gpio_to_irq() support")
Signed-off-by: Maxim Kiselev <bigunclemax@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-03 16:44:23 +01:00
..
devres.c
gpio: make flags mandatory for gpiod_get functions
2015-07-06 10:39:24 +02:00
gpio-74x164.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
gpio-74xx-mmio.c
gpio: 74xx: fix a possible NULL dereference
2015-11-17 14:39:17 +01:00
gpio-104-idio-16.c
gpio: Add GPIO support for the ACCES 104-IDIO-16
2015-10-27 11:01:19 +01:00
gpio-adnp.c
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
2019-04-03 06:23:28 +02:00
gpio-adp5520.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-adp5588.c
gpio: adp5588: Fix sleep-in-atomic-context bug
2018-10-10 08:52:10 +02:00
gpio-altera.c
gpio: altera: Use handle_level_irq when configured as a level_high
2017-12-16 10:33:51 +01:00
gpio-amd8111.c
gpio-amd8111: add release_region on ioport_map failure
2015-01-19 09:48:45 +01:00
gpio-amdpt.c
gpio: driver for AMD Promontory
2015-10-26 14:45:26 +01:00
gpio-arizona.c
gpio: arizona: add support for WM8998 and WM1814
2015-10-02 04:19:34 -07:00
gpio-ath79.c
gpio: ath79: add missing MODULE_DESCRIPTION/LICENSE
2018-02-03 17:04:26 +01:00
gpio-bcm-kona.c
gpio: bcm-kona: fix bcm_kona_gpio_reset() warnings
2016-06-24 10:18:19 -07:00
gpio-brcmstb.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-bt8xx.c
gpio: bt8xx: fix release of managed resources
2014-08-29 14:31:43 +02:00
gpio-clps711x.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-crystalcove.c
gpio: Fix checkpatch.pl issues
2015-06-16 11:00:06 +02:00
gpio-cs5535.c
Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2014-12-14 16:10:09 -08:00
gpio-da9052.c
gpio: use (!foo) instead of (foo == NULL)
2015-04-08 09:54:21 +02:00
gpio-da9055.c
gpio: use (!foo) instead of (foo == NULL)
2015-04-08 09:54:21 +02:00
gpio-davinci.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-dln2.c
gpio: dln2: fix build breakage
2015-05-13 10:02:12 +02:00
gpio-dwapb.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-em.c
gpio: kill off set_irq_flags usage
2015-07-28 09:45:39 +02:00
gpio-ep93xx.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-etraxfs.c
gpio: etraxfs: use container_of() to get state container
2015-10-02 04:19:31 -07:00
gpio-f7188x.c
gpio: Fix checkpatch.pl issues
2015-06-16 11:00:06 +02:00
gpio-ge.c
gpio: ge: Convert to use devm_kstrdup
2015-01-29 10:33:15 +01:00
gpio-generic.c
gpio: generic: clamp values from bgpio_get_set()
2015-12-17 15:47:38 +01:00
gpio-grgpio.c
gpio/grgpio: fix deadlock in grgpio_irq_unmap()
2015-08-17 10:56:24 +02:00
gpio-ich.c
gpio: ich: Implement get_direction function
2015-04-08 09:54:27 +02:00
gpio-intel-mid.c
gpio: intel-mid: Fix build warning when !CONFIG_PM
2018-02-25 11:03:42 +01:00
gpio-iop.c
gpio: iop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
2018-02-03 17:04:25 +01:00
gpio-it87.c
gpio: add GPIO support for IT87xx, replacing gpio-it8761e
2015-10-02 04:19:35 -07:00
gpio-janz-ttl.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-kempld.c
gpio: gpio-kempld: Fix get_direction return value
2015-05-12 13:49:13 +02:00
gpio-ks8695.c
gpio: ks8695: fix 'else should follow close brace '}''
2014-10-02 16:07:00 +02:00
gpio-loongson.c
gpio: loongson: Add Loongson-3A/3B GPIO driver support
2015-04-08 09:53:42 +02:00
gpio-lp3943.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-lpc18xx.c
gpio: replace trivial implementations of request/free with generic one
2015-10-16 22:13:43 +02:00
gpio-lpc32xx.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-lynxpoint.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-max730x.c
gpio: max730x: eliminate double free
2015-10-02 15:06:41 -07:00
gpio-max732x.c
gpio: max732x: Fix error handling in probe()
2015-08-26 13:34:55 +02:00
gpio-max7300.c
gpio: max7300: remove 'ret' variable
2015-04-08 09:54:10 +02:00
gpio-max7301.c
gpio: max7301: fix driver for use with CONFIG_VMAP_STACK
2019-01-13 10:05:27 +01:00
gpio-mb86s7x.c
gpio: mb86s70: Return error if requesting an already assigned gpio
2015-03-02 15:35:41 +01:00
gpio-mc9s08dz60.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mc33880.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
gpio-mcp23s08.c
spi: Drop owner assignment from spi_drivers
2015-10-28 10:30:17 +09:00
gpio-ml-ioh.c
gpio: ml-ioh: Fix buffer underwrite on probe error path
2018-09-19 22:48:58 +02:00
gpio-mm-lantiq.c
gpio: gpio-mm-lantiq: Use of_mm_gpiochip_remove
2015-01-20 11:18:51 +01:00
gpio-moxart.c
gpio: replace trivial implementations of request/free with generic one
2015-10-16 22:13:43 +02:00
gpio-mpc8xxx.c
gpio: mpc8xxx: Don't overwrite default irq_set_type callback
2020-01-04 13:34:36 +01:00
gpio-mpc5200.c
gpio: mpc5200: Use of_mm_gpiochip_remove
2015-01-20 11:18:28 +01:00
gpio-msic.c
gpio: msic: fix error return code in platform_msic_gpio_probe()
2018-11-10 07:41:39 -08:00
gpio-mvebu.c
gpio: replace trivial implementations of request/free with generic one
2015-10-16 22:13:43 +02:00
gpio-mxc.c
gpio-mxc: stop including <asm-generic/bug>
2015-10-15 00:21:12 +02:00
gpio-mxs.c
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-18 08:11:42 -07:00
gpio-octeon.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-omap.c
gpio: omap: ensure irq is enabled before wakeup
2019-08-04 09:34:45 +02:00
gpio-palmas.c
gpio: palmas: fix a possible NULL dereference
2015-11-17 14:40:24 +01:00
gpio-pca953x.c
gpio: pca953x: Fix NBANK calculation for PCA9536
2016-08-20 18:09:17 +02:00
gpio-pcf857x.c
gpio: pcf857x: Fix missing first interrupt
2021-03-03 16:44:23 +01:00
gpio-pch.c
gpio/pch: Use irq_set_handler_locked()
2015-07-14 12:12:20 +02:00
gpio-pl061.c
gpio: pl061: use the generic request/free implementations
2015-10-16 22:17:14 +02:00
gpio-pxa.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-rc5t583.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-rcar.c
gpio: rcar: Add Runtime PM handling for interrupts
2018-05-26 08:49:00 +02:00
gpio-rdc321x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-sa1100.c
gpio: sa1100: fix irq probing for ucb1x00
2016-10-07 15:23:42 +02:00
gpio-samsung.c
gpio: samsung: Remove remaining check for CONFIG_S5P_GPIO_DRVSTR
2014-09-23 17:51:39 +02:00
gpio-sch311x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-sch.c
Revert "gpio: sch: use uapi/linux/pci_ids.h directly"
2015-04-10 11:35:45 +02:00
gpio-sodaville.c
irqdomain: Use irq_domain_get_of_node() instead of direct field access
2015-10-13 19:01:23 +02:00
gpio-spear-spics.c
Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2014-12-14 16:10:09 -08:00
gpio-sta2x11.c
gpio: kill off set_irq_flags usage
2015-07-28 09:45:39 +02:00
gpio-stmpe.c
gpio: stmpe: enforce device tree only mode
2015-01-20 11:03:22 +01:00
gpio-stp-xway.c
gpio: stp-xway: Use the of_property_read_u32 helper
2015-06-02 11:22:02 +02:00
gpio-sx150x.c
gpio: sx150x: use container_of() to get state container
2015-10-02 04:19:32 -07:00
gpio-syscon.c
gpio: syscon: Fix possible NULL ptr usage
2019-11-25 15:54:50 +01:00
gpio-tb10x.c
gpio: replace trivial implementations of request/free with generic one
2015-10-16 22:13:43 +02:00
gpio-tc3589x.c
gpio: tc35894: fix up tc35894 interrupt configuration
2020-10-14 09:46:19 +02:00
gpio-tegra.c
gpio: tegra: Move driver registration to subsys_init level
2018-09-19 22:48:56 +02:00
gpio-timberdale.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-tps6586x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tps65910.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tps65912.c
gpio: tps65912: fix wrong container_of arguments
2015-02-23 15:40:32 +01:00
gpio-ts5500.c
gpio: Constify platform_device_id
2015-05-12 09:41:28 +02:00
gpio-twl4030.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-twl6040.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-tz1090-pdc.c
gpio: replace trivial implementations of request/free with generic one
2015-10-16 22:13:43 +02:00
gpio-tz1090.c
genirq: Remove irq argument from irq flow handlers
2015-09-16 15:47:51 +02:00
gpio-ucb1400.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-vf610.c
gpio: vf610: Mask all GPIO interrupts
2019-03-23 08:44:25 +01:00
gpio-viperboard.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-vr41xx.c
Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2014-12-14 16:10:09 -08:00
gpio-vx855.c
gpio: vx855: Switch to use managed resources APIs
2015-01-15 17:23:18 +01:00
gpio-wm831x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-wm8350.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-wm8994.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-xgene-sb.c
gpio: xgene: add ACPI support for APM X-Gene GPIO standby driver
2015-06-02 14:52:00 +02:00
gpio-xgene.c
gpio: xgene: mark PM functions as __maybe_unused
2018-02-25 11:03:50 +01:00
gpio-xilinx.c
gpio/xilinx: Use correct address when setting initial values.
2015-07-16 13:28:33 +02:00
gpio-xlp.c
gpio: xlp: Convert to use gpiolib irqchip helpers
2015-10-22 14:36:41 +02:00
gpio-xtensa.c
gpio: drop owner assignment from platform_drivers
2014-10-20 16:20:31 +02:00
gpio-zevio.c
gpio: zevio: Use of_mm_gpiochip_remove
2015-01-20 11:18:56 +01:00
gpio-zx.c
gpio: gpio-xz: use the generic request/free implementations
2015-10-16 22:15:51 +02:00
gpio-zynq.c
gpio: zynq: use container_of() to get state container
2015-10-02 04:19:33 -07:00
gpiolib-acpi.c
Merge tag 'pm+acpi-4.4-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2015-11-04 18:10:13 -08:00
gpiolib-legacy.c
Revert "gpiolib: Split GPIO flags parsing and GPIO configuration"
2016-07-27 09:47:29 -07:00
gpiolib-of.c
gpio: fix oops resulting from calling of_get_named_gpio(NULL, ...)
2020-08-21 10:52:57 +02:00
gpiolib-sysfs.c
Revert "gpio-sysfs: Use gpio descriptor name instead of gpiochip names array"
2015-10-05 13:07:47 +02:00
gpiolib.c
gpio: Fix error message on out-of-range GPIO in lookup table
2020-01-23 08:18:36 +01:00
gpiolib.h
gpiolib: Mark gpio_suffixes array with __maybe_unused
2018-09-26 08:35:09 +02:00
Kconfig
gpio: fix gpio-adp5588 build errors
2019-06-22 08:18:26 +02:00
Makefile
gpio: Add GPIO support for the ACCES 104-IDIO-16
2015-10-27 11:01:19 +01:00