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lineage-22.1
android_kernel_samsung_sm8650/drivers/pinctrl
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Sergey Matsievskiy 0558847d22 pinctrl: ocelot: fix system hang on level based interrupts 
commit 93b8ddc54507a227087c60a0013ed833b6ae7d3c upstream.

The current implementation only calls chained_irq_enter() and
chained_irq_exit() if it detects pending interrupts.

```
for (i = 0; i < info->stride; i++) {
	uregmap_read(info->map, id_reg + 4 * i, &reg);
	if (!reg)
		continue;

	chained_irq_enter(parent_chip, desc);
```

However, in case of GPIO pin configured in level mode and the parent
controller configured in edge mode, GPIO interrupt might be lowered by the
hardware. In the result, if the interrupt is short enough, the parent
interrupt is still pending while the GPIO interrupt is cleared;
chained_irq_enter() never gets called and the system hangs trying to
service the parent interrupt.

Moving chained_irq_enter() and chained_irq_exit() outside the for loop
ensures that they are called even when GPIO interrupt is lowered by the
hardware.

The similar code with chained_irq_enter() / chained_irq_exit() functions
wrapping interrupt checking loop may be found in many other drivers:
```
grep -r -A 10 chained_irq_enter drivers/pinctrl
```

Cc: stable@vger.kernel.org
Signed-off-by: Sergey Matsievskiy <matsievskiysv@gmail.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/20241012105743.12450-2-matsievskiysv@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-01-13 22:00:24 +09:00
..
actions
aspeed pinctrl: aspeed: Revert "Force to disable the function's signal" 2023-02-14 19:11:50 +01:00
bcm pinctrl: bcm2835: Handle gpiochip_add_pin_range() errors 2023-07-19 16:21:34 +02:00
berlin pinctrl: berlin: fix spelling typo in comment 2022-09-05 14:10:14 +02:00
cirrus Reapply "Merge tag 'android14-6.1.75_r00' into android14-6.1" 2024-04-02 19:49:12 +00:00
freescale pinctrl: imx8m: kconfig: Fix build error on test compile 2022-09-08 10:06:57 +02:00
intel pinctrl: cherryview: fix address_space_handler() argument 2023-09-19 12:27:57 +02:00
mediatek pinctrl: mediatek: Initialize variable *buf to zero 2023-03-10 09:33:16 +01:00
meson pinctrl: meson-axg: add missing GPIOA_18 gpio group 2023-06-14 11:15:28 +02:00
mvebu pinctrl: armada-37xx: Remove unused macro PIN_GRP() 2022-08-22 10:46:25 +02:00
nomadik pinctrl: nomadik: remove dead code after DB8540 pinctrl removal 2022-09-19 09:35:57 +02:00
nuvoton pinctrl: nuvoton: wpcm450: fix out of bounds write 2023-10-19 23:08:52 +02:00
pxa
qcom Import S928BXXU3AXH7 changes 2024-10-20 20:09:27 +02:00
ralink pinctrl: ralink: reintroduce ralink,rt2880-pinmux compatible string 2023-05-11 23:03:36 +09:00
renesas pinctrl: renesas: rzg2l: Make reverse order of enable() for disable() 2023-11-20 11:52:10 +01:00
samsung pinctrl: samsung: Finish initializing the gpios before registering them 2022-08-16 12:23:30 +03:00
spear
sprd
starfive Reapply "Merge tag 'android14-6.1.75_r00' into android14-6.1" 2024-04-02 19:49:12 +00:00
stm32 pinctrl: stm32: Fix refcount leak in stm32_pctrl_get_irq_domain 2023-03-10 09:33:11 +01:00
sunplus pinctrl:sunplus: Add check for kmalloc 2023-07-19 16:21:37 +02:00
sunxi These are the pin control changes for the v6.1 kernel cycle: 2022-10-11 10:59:59 -07:00
tegra pinctrl: tegra: tegra194: drop unused pin groups 2022-05-04 23:40:05 +02:00
ti
uniphier
visconti
vt8500
core.c pinctrl: avoid reload of p state in list iteration 2023-12-08 08:51:13 +01:00
core.h
devicetree.c pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map 2022-11-10 12:26:18 +01:00
devicetree.h
Kconfig pinctrl: add GPL license and configure SX150x 2023-04-18 20:52:22 -07:00
Makefile pinctrl: Create subdirectory for StarFive drivers 2022-10-04 10:42:11 +02:00
pinconf-generic.c pinctrl: pinconf-generic: add missing of_node_put() 2022-12-31 13:32:16 +01:00
pinconf.c
pinconf.h
pinctrl-amd.c pinctrl: amd: Don't show Invalid config param errors 2023-09-06 21:27:03 +01:00
pinctrl-amd.h pinctrl: amd: Drop pull up select configuration 2023-07-23 13:49:31 +02:00
pinctrl-apple-gpio.c pinctrl: apple: Use a raw spinlock for the regmap 2022-05-25 09:37:44 +02:00
pinctrl-artpec6.c
pinctrl-as3722.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE 2022-06-10 14:51:36 +02:00
pinctrl-at91-pio4.c Reapply "Merge tag 'android14-6.1.75_r00' into android14-6.1" 2024-04-02 19:49:12 +00:00
pinctrl-at91.c pinctrl: at91: use devm_kasprintf() to avoid potential leaks 2023-03-10 09:33:59 +01:00
pinctrl-at91.h
pinctrl-axp209.c pinctrl: axp209: Support the AXP221/AXP223/AXP809 variant 2022-06-30 14:05:57 +02:00
pinctrl-bm1880.c
pinctrl-cy8c95x0.c Reapply "Merge tag 'android14-6.1.75_r00' into android14-6.1" 2024-04-02 19:49:12 +00:00
pinctrl-da850-pupd.c
pinctrl-da9062.c
pinctrl-digicolor.c
pinctrl-equilibrium.c pinctrl: equilibrium: Switch to use fwnode instead of of_node 2022-05-09 13:46:51 +02:00
pinctrl-equilibrium.h pinctrl: equilibrium: Switch to use fwnode instead of of_node 2022-05-09 13:46:51 +02:00
pinctrl-falcon.c
pinctrl-gemini.c
pinctrl-ingenic.c pinctrl: Ingenic: JZ4755 bug fixes 2022-10-17 11:47:38 +02:00
pinctrl-k210.c pinctrl: k210: call of_node_put() 2022-12-31 13:32:14 +01:00
pinctrl-keembay.c
pinctrl-lantiq.c
pinctrl-lantiq.h
pinctrl-lpc18xx.c
pinctrl-max77620.c pinctrl: max77620: drop unneeded MODULE_ALIAS 2022-04-22 22:56:46 +02:00
pinctrl-mcp23s08_i2c.c
pinctrl-mcp23s08_spi.c pinctrl: mcp23s08: check return value of devm_kasprintf() 2023-09-13 09:42:46 +02:00
pinctrl-mcp23s08.c pinctrl: mcp23s08: Drop assignment of default number of OF cells 2022-09-03 00:17:35 +02:00
pinctrl-mcp23s08.h
pinctrl-microchip-sgpio.c pinctrl: microchip-sgpio: check return value of devm_kasprintf() 2023-07-19 16:21:38 +02:00
pinctrl-ocelot.c pinctrl: ocelot: fix system hang on level based interrupts 2025-01-13 22:00:24 +09:00
pinctrl-oxnas.c
pinctrl-palmas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE 2022-06-10 14:51:36 +02:00
pinctrl-pic32.c
pinctrl-pic32.h
pinctrl-pistachio.c pinctrl: pistachio: Correct the fwnode_irq_get() return value check 2022-09-08 15:18:58 +02:00
pinctrl-rk805.c
pinctrl-rockchip.c pinctrl: rockchip: Fix refcount leak in rockchip_pinctrl_parse_groups 2023-03-10 09:33:11 +01:00
pinctrl-rockchip.h pinctrl: rockchip: Add RV1126 pinctrl support 2022-08-22 09:51:08 +02:00
pinctrl-single.c pinctrl: single: fix potential NULL dereference 2023-02-14 19:11:50 +01:00
pinctrl-st.c pinctrl: st: stop abusing of_get_named_gpio() 2022-10-04 09:58:17 +02:00
pinctrl-stmfx.c
pinctrl-sx150x.c pinctrl: add GPL license and configure SX150x 2023-04-18 20:52:22 -07:00
pinctrl-tb10x.c
pinctrl-thunderbay.c pinctrl: thunderbay: fix possible memory leak in thunderbay_build_functions() 2022-12-31 13:32:23 +01:00
pinctrl-utils.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE 2022-06-10 14:51:36 +02:00
pinctrl-utils.h treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE 2022-06-10 14:51:36 +02:00
pinctrl-xway.c
pinctrl-zynq.c pinctrl: zynq: use module_platform_driver to simplify the code 2022-03-15 01:46:13 +01:00
pinctrl-zynqmp.c Revert "pinctrl: pinctrl-zynqmp: Add support for output-enable and bias-high-impedance" 2022-10-18 09:50:29 +02:00
pinmux.c
pinmux.h