[PATCH 71/78] ASoC: codecs: wm8731: Use guard() for mutex locks

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at gmail.com>

Clean up the code using guard() for mutex locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 sound/soc/codecs/wm8731.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index a2f0e2f5c407..ff004c9e01fb 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -115,7 +115,7 @@ static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
 	if (deemph > 1)
 		return -EINVAL;
 
-	mutex_lock(&wm8731->lock);
+	guard(mutex)(&wm8731->lock);
 	if (wm8731->deemph != deemph) {
 		wm8731->deemph = deemph;
 
@@ -123,7 +123,6 @@ static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
 
 		ret = 1;
 	}
-	mutex_unlock(&wm8731->lock);
 
 	return ret;
 }
-- 
2.43.0