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linux/drivers/pinctrl
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Krzysztof Kozlowski e58ab834e4 pinctrl: qcom: lpass-lpi: fix concurrent register updates 
[ Upstream commit c8befdc411 ]

The Qualcomm LPASS LPI pin controller driver uses one lock for guarding
Read-Modify-Write code for slew rate registers.  However the pin
configuration and muxing registers have exactly the same RMW code but
are not protected.

Pin controller framework does not provide locking here, thus it is
possible to trigger simultaneous change of pin configuration registers
resulting in non-atomic changes.

Protect from concurrent access by re-using the same lock used to cover
the slew rate register.  Using the same lock instead of adding second
one will make more sense, once we add support for newer Qualcomm SoC,
where slew rate is configured in the same register as pin
configuration/muxing.

Fixes: 6e261d1090 ("pinctrl: qcom: Add sm8250 lpass lpi pinctrl driver")
Cc: stable@vger.kernel.org
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231013145705.219954-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-11-02 09:35:22 +01:00
..
actions pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
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 pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
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 drivers/pinctrl: remove redundant ret variable 2022-01-24 01:12:54 +01:00
qcom pinctrl: qcom: lpass-lpi: fix concurrent register updates 2023-11-02 09:35:22 +01:00
ralink pinctrl: ralink: reintroduce ralink,rt2880-pinmux compatible string 2023-05-11 23:03:36 +09:00
renesas pinctrl: renesas: rzn1: Enable missing PINMUX 2023-10-19 23:08:54 +02:00
samsung pinctrl: samsung: Finish initializing the gpios before registering them 2022-08-16 12:23:30 +03:00
spear pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
sprd pinctrl: sprd: Simplify bool comparison 2021-01-18 14:41:42 +01:00
starfive pinctrl: starfive: Rename "pinctrl-starfive" to "pinctrl-starfive-jh7100" 2022-10-04 10:47:48 +02:00
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 pinctrl: ti: fix error return code of ti_iodelay_dt_node_to_map() 2021-04-08 15:57:14 +02:00
uniphier pinctrl: uniphier: Add USB device pinmux settings 2022-02-11 01:37:21 +01:00
visconti gpio: visconti: Add Toshiba Visconti GPIO support 2021-02-15 11:43:26 +01:00
vt8500 pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
core.c Revert "pinctrl: avoid unsafe code pattern in find_pinctrl()" 2023-10-25 12:03:13 +02:00
core.h pinctrl: Allow modules to use pinctrl_[un]register_mappings 2019-12-30 14:27:17 +01:00
devicetree.c pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map 2022-11-10 12:26:18 +01:00
devicetree.h pinctrl: devicetree.c: remove orphan pinctrl_dt_has_hogs() 2019-10-04 23:26:23 +02:00
Kconfig These are the pin control changes for the v6.1 kernel cycle: 2022-10-11 10:59:59 -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 pinctrl: use to octal permissions for debugfs files 2021-03-10 14:41:58 +01:00
pinconf.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
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: artpec6: fix __iomem on reg in set 2020-01-07 13:57:17 +01:00
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 pinctrl: at91-pio4: check return value of devm_kasprintf() 2023-07-19 16:21:38 +02:00
pinctrl-at91.c pinctrl: at91: use devm_kasprintf() to avoid potential leaks 2023-03-10 09:33:59 +01:00
pinctrl-at91.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
pinctrl-axp209.c pinctrl: axp209: Support the AXP221/AXP223/AXP809 variant 2022-06-30 14:05:57 +02:00
pinctrl-bm1880.c pinctrl: pinctrl-bm1880: Rename ill documented struct attribute entries 2020-07-16 15:13:55 +02:00
pinctrl-cy8c95x0.c pinctrl: cy8c95x0: Align function names in cy8c95x0_pmxops 2022-09-20 11:22:12 +02:00
pinctrl-da850-pupd.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-da9062.c pinctrl: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
pinctrl-digicolor.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
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: falcon: add missing put_device() call in pinctrl_falcon_probe() 2020-12-04 09:17:51 +01:00
pinctrl-gemini.c pinctrl: gemini: fix typos 2021-10-14 01:22:58 +02:00
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: keembay: rework loops looking for groups names 2021-12-22 02:57:27 +01:00
pinctrl-lantiq.c pinctrl: fix several typos 2020-04-28 13:26:49 +02:00
pinctrl-lantiq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 332 2019-06-05 17:37:06 +02:00
pinctrl-lpc18xx.c pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
pinctrl-max77620.c pinctrl: max77620: drop unneeded MODULE_ALIAS 2022-04-22 22:56:46 +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: mcp23s08: Add optional reset GPIO 2021-06-12 01:58:10 +02:00
pinctrl-mcp23s08_i2c.c pinctrl: mcp23s08: Split to three parts: core, I²C, SPI 2020-04-16 14:21:23 +02:00
pinctrl-mcp23s08_spi.c pinctrl: mcp23s08: check return value of devm_kasprintf() 2023-09-13 09:42:46 +02:00
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 alt mode for ocelot 2023-04-06 12:10:49 +02:00
pinctrl-oxnas.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
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: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-pic32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445 2019-06-05 17:37:18 +02:00
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: Propagate firmware node from a parent device 2021-12-22 03:09:56 +01:00
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: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-sx150x.c pinctrl: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
pinctrl-tb10x.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
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: Get rid of duplicate of_node assignment in the drivers 2021-12-16 04:18:30 +01:00
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 pinctrl: add one more "const" for generic function groups 2021-12-22 02:57:27 +01:00
pinmux.h pinctrl: add one more "const" for generic function groups 2021-12-22 02:57:27 +01:00