linux.git/drivers/gpio, branch v7.0

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

gpio: mxc: map Both Edge pad wakeup to Rising Edge

2026-03-26T08:41:44+00:00

Suspend may fail on i.MX8QM when Falling Edge is used as a pad wakeup
trigger due to a hardware bug in the detection logic. Since the hardware
does not support Both Edge wakeup, remap requests for Both Edge to Rising
Edge by default to avoid hitting this issue.

A warning is emitted when Falling Edge is selected on i.MX8QM.

Fixes: f60c9eac54af ("gpio: mxc: enable pad wakeup on i.MX8x platforms")
cc: stable@vger.kernel.org
Reviewed-by: Peng Fan 
Signed-off-by: Shenwei Wang 
Link: https://patch.msgid.link/20260324192129.2797237-1-shenwei.wang@nxp.com
Signed-off-by: Bartosz Golaszewski

gpio: qixis-fpga: Fix error handling for devm_regmap_init_mmio()

2026-03-23T10:06:38+00:00

devm_regmap_init_mmio() returns an ERR_PTR() on failure, not NULL.
The original code checked for NULL which would never trigger on error,
potentially leading to an invalid pointer dereference.
Use IS_ERR() and PTR_ERR() to properly handle the error case.

Fixes: e88500247dc3 ("gpio: add QIXIS FPGA GPIO controller")
Signed-off-by: Felix Gu 
Link: https://patch.msgid.link/20260320-qixis-v1-1-a8efc22e8945@gmail.com
Signed-off-by: Bartosz Golaszewski

gpio: shared: handle pins shared by child nodes of devices

2026-03-23T08:54:24+00:00

Shared GPIOs may be assigned to child nodes of device nodes which don't
themselves bind to any struct device. We need to pass the firmware node
that is the actual consumer to gpiolib-shared and compare against it
instead of unconditionally using the fwnode of the consumer device.

Fixes: a060b8c511ab ("gpiolib: implement low-level, shared GPIO support")
Reported-by: Jon Hunter 
Closes: https://lore.kernel.org/all/921ba8ce-b18e-4a99-966d-c763d22081e2@nvidia.com/
Tested-by: Jon Hunter 
Acked-by: Jon Hunter 
Link: https://patch.msgid.link/20260318-gpio-shared-xlate-v2-2-0ce34c707e81@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski

gpio: shared: call gpio_chip::of_xlate() if set

2026-03-23T08:54:24+00:00

OF-based GPIO controller drivers may provide a translation function that
calculates the real chip offset from whatever devicetree sources
provide. We need to take this into account in the shared GPIO management
and call of_xlate() if it's provided and adjust the entry->offset we
initially set when scanning the tree.

To that end: modify the shared GPIO API to take the GPIO chip as
argument on setup (to avoid having to rcu_dereference() it from the GPIO
device) and protect the access to entry->offset with the existing lock.

Fixes: a060b8c511ab ("gpiolib: implement low-level, shared GPIO support")
Reported-by: Jon Hunter 
Closes: https://lore.kernel.org/all/921ba8ce-b18e-4a99-966d-c763d22081e2@nvidia.com/
Reviewed-by: Linus Walleij 
Tested-by: Jon Hunter 
Acked-by: Jon Hunter 
Link: https://patch.msgid.link/20260318-gpio-shared-xlate-v2-1-0ce34c707e81@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski

Merge branch 'gpio/dev-init-rework' into gpio/for-current

2026-03-16T09:23:47+00:00

Pull in the gpiochip_add_data_with_key() rework addressing resource
leaks in error path.

gpiolib: clear requested flag if line is invalid

2026-03-11T08:47:25+00:00

If `gpiochip_line_is_valid()` fails, then `-EINVAL` is returned, but
`desc->flags` will have `GPIOD_FLAG_REQUESTED` set, which will result
in subsequent calls misleadingly returning `-EBUSY`.

Fix that by clearing the flag in case of failure.

Fixes: a501624864f3 ("gpio: Respect valid_mask when requesting GPIOs")
Signed-off-by: Barnabás Pőcze 
Reviewed-by: Matti Vaittinen 
Link: https://patch.msgid.link/20260310204359.1202451-1-pobrn@protonmail.com
Signed-off-by: Bartosz Golaszewski