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ASoC: sta32x: 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.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Axel Lin 2015-05-09 23:08:33 +08:00 committed by Mark Brown
parent b787f68c36
commit 79ffbf11b7
1 changed files with 4 additions and 10 deletions
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14
sound/soc/codecs/sta32x.c
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@ -1096,16 +1096,10 @@ static int sta32x_i2c_probe(struct i2c_client *i2c,
#endif
/* GPIOs */
sta32x->gpiod_nreset = devm_gpiod_get(dev, "reset");
if (IS_ERR(sta32x->gpiod_nreset)) {
ret = PTR_ERR(sta32x->gpiod_nreset);
if (ret != -ENOENT && ret != -ENOSYS)
return ret;
sta32x->gpiod_nreset = NULL;
} else {
gpiod_direction_output(sta32x->gpiod_nreset, 0);
}
sta32x->gpiod_nreset = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(sta32x->gpiod_nreset))
return PTR_ERR(sta32x->gpiod_nreset);
/* regulators */
for (i = 0; i < ARRAY_SIZE(sta32x->supplies); i++)