Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Emanuele Ghidoli b26db1bb51 gpio: pca953x: fix IRQ storm on system wake up ... [ Upstream commit 3e38f946062b4845961ab86b726651b4457b2af8 ] If an input changes state during wake-up and is used as an interrupt source, the IRQ handler reads the volatile input register to clear the interrupt mask and deassert the IRQ line. However, the IRQ handler is triggered before access to the register is granted, causing the read operation to fail. As a result, the IRQ handler enters a loop, repeatedly printing the "failed reading register" message, until `pca953x_resume()` is eventually called, which restores the driver context and enables access to registers. Fix by disabling the IRQ line before entering suspend mode, and re-enabling it after the driver context is restored in `pca953x_resume()`. An IRQ can be disabled with disable_irq() and still wake the system as long as the IRQ has wake enabled, so the wake-up functionality is preserved. Fixes: b765743005 ("gpio: pca953x: Restore registers after suspend/resume cycle") Cc: stable@vger.kernel.org Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20250512095441.31645-1-francesco@dolcini.it Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> [ Apply directly to suspend/resume functions ] Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-09-09 18:44:00 +02:00
..
gpio-74x164.c	gpio: 74x164: Enable output pins after registers are reset	2024-03-06 14:36:10 +00:00
gpio-74xx-mmio.c
gpio-104-dio-48e.c
gpio-104-idi-48.c
gpio-104-idio-16.c
gpio-adnp.c
gpio-adp5520.c
gpio-adp5588.c
gpio-altera-a10sr.c
gpio-altera.c
gpio-amd-fch.c
gpio-amd8111.c	gpio: amd8111: Fix PCI device reference count leak	2022-12-14 11:30:44 +01:00
gpio-amdpt.c
gpio-arizona.c	gpio: arizona: put pm_runtime in case of failure	2020-07-29 10:18:26 +02:00
gpio-aspeed.c	gpio: aspeed: Use devm_clk api to manage clock source	2024-11-08 16:20:45 +01:00
gpio-ath79.c
gpio-bcm-kona.c	gpio: bcm-kona: Add missing newline to dev_err format string	2025-03-13 12:43:13 +01:00
gpio-bd9571mwv.c
gpio-bd70528.c
gpio-brcmstb.c
gpio-bt8xx.c
gpio-cadence.c	gpio: cadence: Add missing MODULE_DEVICE_TABLE	2021-06-03 08:59:08 +02:00
gpio-clps711x.c
gpio-creg-snps.c
gpio-crystalcove.c	gpio: crystalcove: Use -ENOTSUPP consistently	2024-05-17 11:43:52 +02:00
gpio-cs5535.c
gpio-da9052.c
gpio-da9055.c
gpio-davinci.c	gpio: davinci: fix lazy disable	2024-11-08 16:20:42 +01:00
gpio-dln2.c
gpio-dwapb.c
gpio-eic-sprd.c	gpio: eic-sprd: Clear interrupt after set the interrupt type	2024-02-23 08:24:53 +01:00
gpio-em.c
gpio-ep93xx.c	gpio: ep93xx: Fix single irqchip with multi gpiochips	2021-02-17 10:35:14 +01:00
gpio-exar.c
gpio-f7188x.c
gpio-ftgpio010.c
gpio-ge.c
gpio-gpio-mm.c
gpio-grgpio.c	gpio: grgpio: Add NULL check in grgpio_probe	2024-12-14 19:44:47 +01:00
gpio-gw-pld.c
gpio-hlwd.c
gpio-htc-egpio.c
gpio-ich.c
gpio-intel-mid.c
gpio-iop.c
gpio-it87.c
gpio-ixp4xx.c
gpio-janz-ttl.c
gpio-kempld.c
gpio-loongson.c
gpio-loongson1.c
gpio-lp873x.c
gpio-lp3943.c
gpio-lp87565.c
gpio-lpc18xx.c
gpio-lpc32xx.c
gpio-lynxpoint.c
gpio-madera.c
gpio-max730x.c
gpio-max732x.c
gpio-max3191x.c
gpio-max7300.c
gpio-max7301.c
gpio-max77620.c
gpio-max77650.c
gpio-mb86s7x.c
gpio-mc9s08dz60.c
gpio-mc33880.c
gpio-menz127.c
gpio-merrifield.c
gpio-ml-ioh.c
gpio-mlxbf.c
gpio-mm-lantiq.c
gpio-mmio.c
gpio-mockup.c	gpio: mockup: Fix mode of debugfs files	2023-05-30 12:44:09 +01:00
gpio-moxtet.c
gpio-mpc8xxx.c	gpio: mpc8xxx: Fix support for IRQ_TYPE_LEVEL_LOW flow_type in mpc85xx	2022-09-28 11:03:57 +02:00
gpio-mpc5200.c
gpio-msic.c
gpio-mt7621.c
gpio-mvebu.c	gpio: mvebu/pwm: Refuse requests with inverted polarity	2022-05-25 09:14:37 +02:00
gpio-mxc.c	gpio: mxc: Always set GPIOs used as interrupt source to INPUT mode	2023-02-06 07:52:37 +01:00
gpio-mxs.c
gpio-octeon.c
gpio-omap.c	gpio: omap: Save and restore sysconfig	2021-04-28 13:19:14 +02:00
gpio-palmas.c
gpio-pca953x.c	gpio: pca953x: fix IRQ storm on system wake up	2025-09-09 18:44:00 +02:00
gpio-pcf857x.c	gpio: pcf857x: Fix missing first interrupt	2021-03-04 10:26:49 +01:00
gpio-pch.c
gpio-pci-idio-16.c
gpio-pcie-idio-24.c	gpio: pcie-idio-24: Enable PEX8311 interrupts	2020-11-18 19:20:31 +01:00
gpio-pisosr.c
gpio-pl061.c
gpio-pmic-eic-sprd.c	gpio: pmic-eic-sprd: Add can_sleep flag for PMIC EIC chip	2023-10-10 21:46:39 +02:00
gpio-pxa.c	gpio: pxa: disable pinctrl calls for MMP_GPIO	2023-10-10 21:46:45 +02:00
gpio-raspberrypi-exp.c
gpio-rc5t583.c
gpio-rcar.c	gpio: rcar: Fix missing of_node_put() call	2025-03-13 12:43:30 +01:00
gpio-rdc321x.c
gpio-reg.c
gpio-sa1100.c
gpio-sama5d2-piobu.c
gpio-sch.c
gpio-sch311x.c
gpio-siox.c	gpio: siox: explicitly support only threaded irqs	2020-10-07 08:01:23 +02:00
gpio-sodaville.c
gpio-spear-spics.c
gpio-sprd.c	gpio: sprd: Clear interrupt when setting the type as edge	2020-10-07 08:01:27 +02:00
gpio-sta2x11.c
gpio-stmpe.c	gpio: stmpe: Check return value of stmpe_reg_read in stmpe_gpio_irq_sync_unlock	2025-03-13 12:43:16 +01:00
gpio-stp-xway.c
gpio-syscon.c
gpio-tb10x.c	gpio: tb10x: Fix an error handling path in tb10x_gpio_probe()	2023-10-10 21:46:38 +02:00
gpio-tc3589x.c	gpio: tc35894: fix up tc35894 interrupt configuration	2020-10-07 08:01:24 +02:00
gpio-tegra.c
gpio-tegra186.c	gpio: tegra186: Fix chip_data type confusion	2022-03-02 11:41:17 +01:00
gpio-thunderx.c
gpio-timberdale.c	gpio: timberdale: Fix potential deadlock on &tgpio->lock	2023-10-25 11:53:23 +02:00
gpio-tpic2810.c
gpio-tps6586x.c
gpio-tps65086.c
gpio-tps65218.c
gpio-tps65910.c
gpio-tps65912.c	gpio: tps65912: check the return value of regmap_update_bits()	2025-08-28 16:21:25 +02:00
gpio-tps68470.c	gpio: tps68470: Make tps68470_gpio_output() always set the initial value	2023-08-11 11:53:44 +02:00
gpio-tqmx86.c	gpio: tqmx86: really make IRQ optional	2021-08-12 13:20:57 +02:00
gpio-ts4800.c
gpio-ts4900.c	gpio: ts4900: Do not set DAT and OE together	2022-03-16 13:21:46 +01:00
gpio-ts5500.c
gpio-twl4030.c
gpio-twl6040.c
gpio-ucb1400.c
gpio-uniphier.c	gpio: uniphier: Fix void functions to remove return value	2021-09-30 10:09:23 +02:00
gpio-vf610.c	gpio: vf610: set value before the direction to avoid a glitch	2023-10-25 11:53:24 +02:00
gpio-viperboard.c
gpio-vr41xx.c	MIPS: Remove repetitive increase irq_err_count	2022-06-29 08:58:46 +02:00
gpio-vx855.c
gpio-wcove.c	gpio: wcove: Use -ENOTSUPP consistently	2024-05-17 11:43:52 +02:00
gpio-winbond.c	gpio: winbond: Fix error code in winbond_gpio_get()	2022-06-29 08:58:47 +02:00
gpio-wm831x.c
gpio-wm8350.c
gpio-wm8994.c
gpio-ws16c48.c
gpio-xgene-sb.c
gpio-xgene.c
gpio-xilinx.c
gpio-xlp.c
gpio-xra1403.c
gpio-xtensa.c
gpio-zevio.c
gpio-zx.c
gpio-zynq.c	gpio: zynq: Fix wakeup source leaks on device unbind	2025-05-02 07:39:17 +02:00
gpiolib-acpi.c	gpiolib: acpi: Ignore touchpad wakeup on GPD G1619-04	2024-02-23 08:24:52 +01:00
gpiolib-acpi.h
gpiolib-devprop.c
gpiolib-devres.c
gpiolib-legacy.c
gpiolib-of.c	gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data()	2022-08-25 11:17:57 +02:00
gpiolib-of.h
gpiolib-sysfs.c	gpiolib: sysfs: Fix error handling on failed export	2023-12-13 18:18:15 +01:00
gpiolib.c	gpio: prevent potential speculation leaks in gpio_device_get_desc()	2024-11-08 16:20:26 +01:00
gpiolib.h
Kconfig	gpio: tqmx86: fix typo in Kconfig label	2024-07-05 09:08:16 +02:00
Makefile
sgpio-aspeed.c	gpio/aspeed-sgpio: don't enable all interrupts by default	2020-10-07 08:01:28 +02:00
TODO