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| author | Guenter Roeck <linux@roeck-us.net> | 2013-11-22 09:26:01 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-29 05:06:18 -0800 |
| commit | f4d566d8de432c1bf94f8f26dd99871601775203 (patch) | |
| tree | 3514168e8508f446daceb2141b21c195598188f1 /lib/cpu-notifier-error-inject.c | |
| parent | bfb158e133d338823eec0c55dbe2be9f685f9739 (diff) | |
extcon: gpio: Request gpio pin before modifying its state
commit 4288d9b8edcec7289e00eecdad44f14c9ea1ba0e 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>
Diffstat (limited to 'lib/cpu-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions