linux-stable.git/drivers/extcon, branch v6.18.32

extcon: ptn5150: handle pending IRQ events during system resume

2026-05-14T13:30:17+00:00

commit 4652fefcda3c604c83d1ae28ede94544e2142f06 upstream.

When the system is suspended and ptn5150 wakeup interrupt is disabled,
any changes on ptn5150 will only be record in interrupt status
registers and won't fire an IRQ since its trigger type is falling
edge. So the HW interrupt line will keep at low state and any further
changes won't trigger IRQ anymore. To fix it, this will schedule a
work to check whether any IRQ are pending and handle it accordingly.

Fixes: 4ed754de2d66 ("extcon: Add support for ptn5150 extcon driver")
Cc: stable@vger.kernel.org
Reviewed-by: Krzysztof Kozlowski 
Acked-by: MyungJoo Ham 
Signed-off-by: Xu Yang 
Signed-off-by: Chanwoo Choi 
Link: https://lore.kernel.org/lkml/20251115025905.1395347-1-xu.yang_2@nxp.com/
Signed-off-by: Greg Kroah-Hartman

extcon: max14526: depends on I2C to prevent build warning/errors

2025-09-08T06:13:06+00:00

Make EXTCON_MAX14526 depend on I2C to address a kconfig warning and
subsequent build errors:

WARNING: unmet direct dependencies detected for REGMAP_I2C
  Depends on [m]: I2C [=m]
  Selected by [y]:
  - EXTCON_MAX14526 [=y] && EXTCON [=y]

ld: vmlinux.o: in function `max14526_driver_init':
extcon-max14526.c:(.init.text+0x77b0e): undefined reference to `i2c_register_driver'
ld: vmlinux.o: in function `max14526_driver_exit':
extcon-max14526.c:(.exit.text+0x467c): undefined reference to `i2c_del_driver'

Fixes: 145af3ddd1cd ("extcon: Add basic support for Maxim MAX14526 MUIC")
Signed-off-by: Randy Dunlap 
Signed-off-by: Chanwoo Choi 
Link: https://lore.kernel.org/lkml/20250515234803.1385375-1-rdunlap@infradead.org/

extcon: max14526: avoid defined but not used warning

2025-09-08T06:12:54+00:00

SIMPLE_PM_DEV_OPS() is deprecated according to .
Use DEFINE_SIMPLE_PM_DEV_OPS() instead. This avoids a build warning
when CONFIG_PM is not enabled:

drivers/extcon/extcon-max14526.c:265:12: warning: ‘max14526_resume’ defined but not used [-Wunused-function]
  265 | static int max14526_resume(struct device *dev)

Fixes: 145af3ddd1cd ("extcon: Add basic support for Maxim MAX14526 MUIC")
Signed-off-by: Randy Dunlap 
Link: https://lore.kernel.org/lkml/20250513210252.1139749-1-rdunlap@infradead.org/
Signed-off-by: Chanwoo Choi

extcon: Add basic support for Maxim MAX14526 MUIC

2025-09-08T05:43:00+00:00

The MAX14526 is designed to simplify interface requirements on portable
devices by multiplexing common inputs (USB, UART, Microphone, Stereo Audio
and Composite Video) on a single micro/mini USB connector. The USB input
supports Hi-Speed USB and the audio/video inputs feature negative rail
signal operation allowing simple DC coupled accessories. These device allow
a single micro/mini USB port to support all the common interfaces on
Cellular phones and portable media players over the same external lines.

Link: https://lore.kernel.org/lkml/20250506073216.43059-3-clamor95@gmail.com/
Signed-off-by: Svyatoslav Ryhel 
Signed-off-by: Chanwoo Choi

extcon: adc-jack: Cleanup wakeup source only if it was enabled

2025-09-08T05:42:35+00:00

Driver in the probe enables wakeup source conditionally, so the cleanup
path should do the same - do not release the wakeup source memory if it
was not allocated.

Link: https://lore.kernel.org/lkml/20250509071703.39442-2-krzysztof.kozlowski@linaro.org/
Reported-by: Christophe JAILLET 
Closes: https://lore.kernel.org/r/22aaebb7-553b-4571-8a43-58a523241082@wanadoo.fr/
Fixes: 78b6a991eb6c ("extcon: adc-jack: Fix wakeup source leaks on device unbind")
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

extcon: qcom-spmi-misc: Fix wakeup source leaks on device unbind

2025-08-26T10:51:36+00:00

Device can be unbound, so driver must also release memory for the wakeup
source.

Link: https://lore.kernel.org/lkml/20250501-device-wakeup-leak-extcon-v2-4-7af77802cbea@linaro.org/
Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

extcon: fsa9480: Fix wakeup source leaks on device unbind

2025-08-26T10:51:36+00:00

Device can be unbound, so driver must also release memory for the wakeup
source.

Link: https://lore.kernel.org/lkml/20250501-device-wakeup-leak-extcon-v2-3-7af77802cbea@linaro.org/
Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

extcon: axp288: Fix wakeup source leaks on device unbind

2025-08-26T10:51:36+00:00

Device can be unbound, so driver must also release memory for the wakeup
source.

Link: https://lore.kernel.org/lkml/20250501-device-wakeup-leak-extcon-v2-2-7af77802cbea@linaro.org/
Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

extcon: adc-jack: Fix wakeup source leaks on device unbind

2025-08-26T10:51:36+00:00

Device can be unbound, so driver must also release memory for the wakeup
source.  Do not use devm interface, because it would change the order of
cleanup.

Link: https://lore.kernel.org/lkml/20250501-device-wakeup-leak-extcon-v2-1-7af77802cbea@linaro.org/
Acked-by: MyungJoo Ham 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

Merge tag 'extcon-next-for-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next

2025-01-12T12:44:27+00:00

Pull extcon updates from Chanwoo:

Update extcon next for v6.14

Detailed description for this pull request:
- Fix null pointer check of memory allocation on extcon-rtk-type-c.c.
- Add EXTCON subsystem documentation including the detailed description/example.
- Drop unneeded init of struct i2c_device_id:driver_data on extcon-fsa9480/pth5150.c.

* tag 'extcon-next-for-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon:
  extcon: Drop explicit initialization of struct i2c_device_id::driver_data to 0
  Documentation: extcon: add documentation for Extcon subsystem
  extcon: realtek: fix NULL deref check in extcon_rtk_type_c_probe