[PATCH 54/78] ASoC: codecs: sta32x: 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/sta32x.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/sta32x.c b/sound/soc/codecs/sta32x.c
index 652c6e3a9e63..61703e6e0586 100644
--- a/sound/soc/codecs/sta32x.c
+++ b/sound/soc/codecs/sta32x.c
@@ -271,7 +271,7 @@ static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
 	unsigned int cfud, val;
 	int i, ret = 0;
 
-	mutex_lock(&sta32x->coeff_lock);
+	guard(mutex)(&sta32x->coeff_lock);
 
 	/* preserve reserved bits in STA32X_CFUD */
 	regmap_read(sta32x->regmap, STA32X_CFUD, &cfud);
@@ -287,19 +287,15 @@ static int sta32x_coefficient_get(struct snd_kcontrol *kcontrol,
 		regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x04);
 	} else if (numcoef == 5) {
 		regmap_write(sta32x->regmap, STA32X_CFUD, cfud | 0x08);
-	} else {
-		ret = -EINVAL;
-		goto exit_unlock;
-	}
+	} else
+		return -EINVAL;
+
 
 	for (i = 0; i < 3 * numcoef; i++) {
 		regmap_read(sta32x->regmap, STA32X_B1CF1 + i, &val);
 		ucontrol->value.bytes.data[i] = val;
 	}
 
-exit_unlock:
-	mutex_unlock(&sta32x->coeff_lock);
-
 	return ret;
 }
 
-- 
2.43.0