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ASoC: cs4271: free allocated GPIO 

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>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Daniel Mack 2012-11-10 19:52:50 +01:00 committed by Mark Brown
parent 77b67063bb
commit 5574f77454
1 changed files with 3 additions and 8 deletions
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11
sound/soc/codecs/cs4271.c
View File

@ -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;
};