[PATCH 55/78] ASoC: codecs: tas2781: 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/tas2781-comlib-i2c.c |  4 +---
 sound/soc/codecs/tas2781-i2c.c        | 20 ++++++++------------
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/sound/soc/codecs/tas2781-comlib-i2c.c b/sound/soc/codecs/tas2781-comlib-i2c.c
index e24d56a14cfd..85fcb33752a1 100644
--- a/sound/soc/codecs/tas2781-comlib-i2c.c
+++ b/sound/soc/codecs/tas2781-comlib-i2c.c
@@ -342,7 +342,7 @@ int tascodec_init(struct tasdevice_priv *tas_priv, void *codec,
 	/* Codec Lock Hold to ensure that codec_probe and firmware parsing and
 	 * loading do not simultaneously execute.
 	 */
-	mutex_lock(&tas_priv->codec_lock);
+	guard(mutex)(&tas_priv->codec_lock);
 
 	if (tas_priv->name_prefix)
 		scnprintf(tas_priv->rca_binaryname, 64, "%s-%sRCA%d.bin",
@@ -360,8 +360,6 @@ int tascodec_init(struct tasdevice_priv *tas_priv, void *codec,
 		dev_err(tas_priv->dev, "request_firmware_nowait err:0x%08x\n",
 			ret);
 
-	/* Codec Lock Release*/
-	mutex_unlock(&tas_priv->codec_lock);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(tascodec_init);
diff --git a/sound/soc/codecs/tas2781-i2c.c b/sound/soc/codecs/tas2781-i2c.c
index 9e6f0ad5f05d..f2b739780f73 100644
--- a/sound/soc/codecs/tas2781-i2c.c
+++ b/sound/soc/codecs/tas2781-i2c.c
@@ -843,12 +843,12 @@ static int tasdevice_digital_gain_get(
 	unsigned char data[4];
 	int ret;
 
-	mutex_lock(&tas_dev->codec_lock);
+	guard(mutex)(&tas_dev->codec_lock);
 	/* Read the primary device */
 	ret = tasdevice_dev_bulk_read(tas_dev, 0, reg, data, 4);
 	if (ret) {
 		dev_err(tas_dev->dev, "%s, get AMP vol error\n", __func__);
-		goto out;
+		return ret;
 	}
 
 	target = get_unaligned_be32(&data[0]);
@@ -868,8 +868,7 @@ static int tasdevice_digital_gain_get(
 	/* find out the member same as or closer to the current volume */
 	ucontrol->value.integer.value[0] =
 		abs(target - ar_l) <= abs(target - ar_r) ? l : r;
-out:
-	mutex_unlock(&tas_dev->codec_lock);
+
 	return 0;
 }
 
@@ -889,13 +888,13 @@ static int tasdevice_digital_gain_put(
 	unsigned char data[4];
 
 	vol = clamp(vol, 0, max);
-	mutex_lock(&tas_dev->codec_lock);
+	guard(mutex)(&tas_dev->codec_lock);
 	/* Read the primary device */
 	ret = tasdevice_dev_bulk_read(tas_dev, 0, reg, data, 4);
 	if (ret) {
 		dev_err(tas_dev->dev, "%s, get AMP vol error\n", __func__);
 		rc = -1;
-		goto out;
+		return rc;
 	}
 
 	volrd = get_unaligned_be32(&data[0]);
@@ -903,7 +902,7 @@ static int tasdevice_digital_gain_put(
 
 	if (volrd == volwr) {
 		rc = 0;
-		goto out;
+		return rc;
 	}
 
 	for (i = 0; i < tas_dev->ndev; i++) {
@@ -919,8 +918,7 @@ static int tasdevice_digital_gain_put(
 
 	if (status)
 		rc = -1;
-out:
-	mutex_unlock(&tas_dev->codec_lock);
+
 	return rc;
 }
 
@@ -1766,12 +1764,10 @@ static int tasdevice_dapm_event(struct snd_soc_dapm_widget *w,
 	int state = 0;
 
 	/* Codec Lock Hold */
-	mutex_lock(&tas_priv->codec_lock);
+	guard(mutex)(&tas_priv->codec_lock);
 	if (event == SND_SOC_DAPM_PRE_PMD)
 		state = 1;
 	tasdevice_tuning_switch(tas_priv, state);
-	/* Codec Lock Release*/
-	mutex_unlock(&tas_priv->codec_lock);
 
 	return 0;
 }
-- 
2.43.0