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Guenter Roeck f4d566d8de extcon: gpio: Request gpio pin before modifying its state

commit 4288d9b8ed upstream.

Commit 338de0ca (extcon: gpio: Use gpio driver/chip debounce if supported)
introduced a call to gpio_set_debounce() before actually requesting the
respective gpio pin from the gpio subsystem.

The gpio subsystem expects that a gpio pin was requested before modifying its
state. Not doing so results in a warning from gpiolib, and the gpio pin is
auto-requested. This in turn causes the subsequent devm_gpio_request_one()
to fail. So devm_gpio_request_one() must be called prior to calling
gpio_set_debounce().

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-01-29 05:06:18 -08:00

extcon-adc-jack.c

extcon: Simplify extcon_dev_register() prototype by removing unnecessary parameter

2013-09-27 09:37:01 +09:00

extcon-arizona.c

extcon: arizona: Get pdata from arizona structure not device

2013-11-26 14:30:10 +09:00

extcon-class.c

extcon: remove freed groups caused the panic or warning in unregister flow

2013-11-26 15:17:23 +09:00

extcon-gpio.c

extcon: gpio: Request gpio pin before modifying its state