In case of probe deferral, the allocated GPIO line is not freed, which prevents it from being claimed and properly asserted in later attempts.

Fix this by using devm_gpio_request().

Signed-off-by: Daniel Mack zonque@gmail.com Reported-by: Michael Hirsch hirsch@teufel.de Cc: Alexander Sverdlin subaparts@yandex.ru --- sound/soc/codecs/cs4271.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/cs4271.c b/sound/soc/codecs/cs4271.c index f994af3..e3f0a7f 100644 --- a/sound/soc/codecs/cs4271.c +++ b/sound/soc/codecs/cs4271.c @@ -485,7 +485,7 @@ static int cs4271_probe(struct snd_soc_codec *codec) gpio_nreset = cs4271plat->gpio_nreset;

if (gpio_nreset >= 0) - if (gpio_request(gpio_nreset, "CS4271 Reset")) + if (devm_gpio_request(codec->dev, gpio_nreset, "CS4271 Reset")) gpio_nreset = -EINVAL; if (gpio_nreset >= 0) { /* Reset codec */ @@ -535,15 +535,10 @@ static int cs4271_probe(struct snd_soc_codec *codec) static int cs4271_remove(struct snd_soc_codec *codec) { struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); - int gpio_nreset;

- gpio_nreset = cs4271->gpio_nreset; - - if (gpio_is_valid(gpio_nreset)) { + if (gpio_is_valid(cs4271->gpio_nreset)) /* Set codec to the reset state */ - gpio_set_value(gpio_nreset, 0); - gpio_free(gpio_nreset); - } + gpio_set_value(cs4271->gpio_nreset, 0);

return 0; };