Since 39b2bbe3d715 (gpio: add flags argument to gpiod_get*() functions) which appeared in v3.17-rc1, the gpiod_get* functions take an additional parameter that allows to specify direction and initial value for output.
Also there is a variant to find optional gpios that returns NULL if there is no gpio instead of -ENOENT.
Make use of both features to simplify the driver.
This changes behaviour if gpiod_get returns -ENOSYS which is the case if CONFIG_GPIOLIB is not enabled. This is a good change because without GPIOLIB there is no way to determine if the reset gpio is specified in the device tree. And if it is it must be handled, so erroring out is the right thing to do.
Furthermore this is one caller less that stops us making the flags argument to gpiod_get*() mandatory.
Fixes: b66a29808e1f ("ASoC: sta32x: make sta32x a gpio consumer for the reset GPIO") Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de --- sound/soc/codecs/sta32x.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c index 007a0e3bc273..0111baf9a5d4 100644 --- a/sound/soc/codecs/sta32x.c +++ b/sound/soc/codecs/sta32x.c @@ -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++)