tree 2afd9edfa63e550fdb30f94d05fcd063f6e5dbcf
parent b787f68c36d49bb1d9236f403813641efa74a031
author Axel Lin <axel.lin@ingics.com> 1431184172 +0800
committer Mark Brown <broonie@kernel.org> 1431453162 +0100

ASoC: sta350: Use devm_gpiod_get_optional at appropriate place

devm_gpiod_get_optional is equivalent to devm_gpiod_get(), except that
when no GPIO was assigned to the requested function it will return NULL.
This is convenient for drivers that need to handle optional GPIOs.

I just checked the code in commit 34d7c3905adb9a9
("ASoC: improve usage of gpiod API") and found that it should use
devm_gpiod_get_optional rather than devm_gpiod_get here.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>