kernel/linux.git/drivers/gpio, branch v7.0.11

gpio: aggregator: lock device when calling device_is_bound()

2026-06-01T15:54:53+00:00

[ Upstream commit 598a2b3e2e0e6aa2e9f7843c96c45b5ea11e0411 ] The kerneldoc for device_is_bound() says it must be called with the device lock taken. Add missing synchronization to this driver. Fixes: 3a27f40b4570 ("gpio: aggregator: stop using dev-sync-probe") Link: https://patch.msgid.link/20260518-gpio-dev-lock-v1-2-cc4736f3ff0b@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin

gpio: aggregator: remove the software node when deactivating the aggregator

2026-06-01T15:54:53+00:00

[ Upstream commit 61fef83f239ecace1cce716135762a2d9b7b1fc6 ] The dynamic software node we create for the aggregator platform device when using configfs is leaked when the device is deactivated. Destroy it as the last step in the tear-down path. Fixes: 86f162e73d2d ("gpio: aggregator: introduce basic configfs interface") Reported-by: Geert Uytterhoeven Closes: https://lore.kernel.org/all/CAMuHMdVZ=XUvJTGdDAjnkxgtw7Uvnn61iOy3XN_5XNZM2anctw@mail.gmail.com/ Link: https://patch.msgid.link/20260520121631.33976-1-bartosz.golaszewski@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin

gpio: aggregator: stop using dev-sync-probe

2026-06-01T15:54:53+00:00

[ Upstream commit 3a27f40b457053e6112a63d14590e4a3ff553b44 ] dev-err-probe is an overengineered solution to a simple problem. Use a combination of wait_for_probe() and device_is_bound() to synchronously wait for the platform device to probe. Reviewed-by: Linus Walleij Link: https://patch.msgid.link/20260327-gpio-kill-dev-sync-probe-v1-2-efac254f1a1d@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Stable-dep-of: 61fef83f239e ("gpio: aggregator: remove the software node when deactivating the aggregator") Signed-off-by: Sasha Levin

gpio: aggregator: fix a potential use-after-free

2026-06-01T15:54:53+00:00

[ Upstream commit 30c073cab97afb31901f94de9605177b6b84367e ] On error we free aggr->lookups->dev_id before removing the entry from the lookup table. If a concurrent thread calls gpiod_find() before we remove the entry, it could iterate over the list and call gpiod_match_lookup_table() which unconditionally dereferences dev_id when calling strcmp(). Reverse the order of cleanup. Fixes: 86f162e73d2d ("gpio: aggregator: introduce basic configfs interface") Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20260520084911.27938-1-bartosz.golaszewski@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin

gpio: cdev: check if uAPI v2 config attributes are correctly zeroed

2026-06-01T15:54:52+00:00

[ Upstream commit 3e6ccd790ed69bedd3d9626d01dd35cf9821c121 ] We check the padding of other uAPI v2 structures but not that of line config attributes. For used attributes: check if their padding is zeroed, for unused: check if the entire structure is zeroed. Fixes: 3c0d9c635ae2 ("gpiolib: cdev: support GPIO_V2_GET_LINE_IOCTL and GPIO_V2_LINE_GET_VALUES_IOCTL") Reviewed-by: Kent Gibson Link: https://patch.msgid.link/20260521-gpio-cdev-attr-padding-check-v3-1-ec3bcbe2e358@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin

gpio: of: clear OF_POPULATED on hog nodes in remove path

2026-05-14T13:31:10+00:00

commit bbee90e750262bfb406d66dc65c46d616d2b6673 upstream. The previously set OF_POPULATED flag should be cleared on the hog nodes when removing the chip. Cc: stable@vger.kernel.org Fixes: 63636d956c455 ("gpio: of: Add DT overlay support for GPIO hogs") Acked-by: Linus Walleij Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20260309-gpio-hog-fwnode-v2-1-4e61f3dbf06a@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman

gpio: tegra: return -ENOMEM on allocation failure in probe

2026-04-10T07:01:24+00:00

devm_kzalloc() failure in tegra_gpio_probe() returns -ENODEV, which indicates "no such device". The correct error code for a memory allocation failure is -ENOMEM. Signed-off-by: Samasth Norway Ananda Link: https://patch.msgid.link/20260409185853.2163034-1-samasth.norway.ananda@oracle.com Signed-off-by: Bartosz Golaszewski

gpio: tegra: fix irq_release_resources calling enable instead of disable

2026-04-09T08:35:33+00:00

tegra_gpio_irq_release_resources() erroneously calls tegra_gpio_enable() instead of tegra_gpio_disable(). When IRQ resources are released, the GPIO configuration bit (CNF) should be cleared to deconfigure the pin as a GPIO. Leaving it enabled wastes power and can cause unexpected behavior if the pin is later reused for an alternate function via pinctrl. Fixes: 66fecef5bde0 ("gpio: tegra: Convert to gpio_irq_chip") Signed-off-by: Samasth Norway Ananda Link: https://patch.msgid.link/20260407210247.1737938-1-samasth.norway.ananda@oracle.com Signed-off-by: Bartosz Golaszewski

gpio: bd72720: handle missing regmap

2026-04-08T07:14:42+00:00

Currently the probe does not check whether getting the regmap succeeded. This can cause crash when regmap is used, if it wasn't successfully obtained. Failing to get the regmap is unlikely, especially since this driver is expected to be kicked by the MFD driver only after registering the regmap - but it is still better to handle this gracefully. Signed-off-by: Matti Vaittinen Fixes: e7eef0bd4075 ("regulator: bd71828-regulator.c: Fix LDON-HEAD mode") Link: https://patch.msgid.link/5bfffee380863bcf24f3062e48094c8eb7b1342f.1775565381.git.mazziesaccount@gmail.com Signed-off-by: Bartosz Golaszewski

gpio: shared: shorten the critical section in gpiochip_setup_shared()

2026-03-30T07:51:15+00:00

Commit 710abda58055 ("gpio: shared: call gpio_chip::of_xlate() if set") introduced a critical section around the adjustmenet of entry->offset. However this may cause a deadlock if we create the auxiliary shared proxy devices with this lock taken. We only need to protect entry->offset while it's read/written so shorten the critical section and release the lock before creating the proxy device as the field in question is no longer accessed at this point. Fixes: 710abda58055 ("gpio: shared: call gpio_chip::of_xlate() if set") Reported-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260325-gpio-shared-deadlock-v1-1-e4e7a5319e95@oss.qualcomm.com Signed-off-by: Bartosz Golaszewski