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(parent: 54d7719) | patch
gpio: drop lock before reading GPIO direction
authorLinus Walleij <linus.walleij@linaro.org>
Mon, 30 May 2016 15:11:59 +0000 (17:11 +0200)
committerLinus Walleij <linus.walleij@linaro.org>
Mon, 30 May 2016 15:11:59 +0000 (17:11 +0200)
commit545ebd9a9be6bcbcf3e8dc24b874bfd634131946
treef71f325c741cddd9141d9a750f6bf7dec0566454tree | snapshot (tar.gz zip)
parent54d77198fdfbc4f0fe11b4252c1d9c97d51a3264commit | diff
gpio: drop lock before reading GPIO direction

When adding the gpiochip, the GPIO HW drivers' callback get_direction()
could get called in atomic context. Some of the GPIO HW drivers may
sleep when accessing the register.

Move the lock before initializing the descriptors.

Reported-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/gpio/gpiolib.c diff | blob | blame | history