[PATCH v2 05/26] ASoC: codecs: tas2783: Use guard() for mutex locks

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@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@gmail.com>
---
 sound/soc/codecs/tas2783-sdw.c | 60 ++++++++++++++++------------------
 1 file changed, 29 insertions(+), 31 deletions(-)

diff --git a/sound/soc/codecs/tas2783-sdw.c b/sound/soc/codecs/tas2783-sdw.c
index db58c50e8a83..8ebed797acb5 100644
--- a/sound/soc/codecs/tas2783-sdw.c
+++ b/sound/soc/codecs/tas2783-sdw.c
@@ -12,6 +12,7 @@
 // Author: Baojun Xu <baojun.xu@ti.com>
 // Author: Kevin Lu <kevin-lu@ti.com>
 
+#include <linux/cleanup.h>
 #include <linux/unaligned.h>
 #include <linux/crc32.h>
 #include <linux/efi.h>
@@ -693,12 +694,12 @@ static s32 tas2783_update_calibdata(struct tas2783_prv *tas_dev)
 		return 0;
 	}
 
-	mutex_lock(&tas_dev->calib_lock);
-	ret = tas2783_validate_calibdata(tas_dev, tas_dev->cali_data.data,
-					 tas_dev->cali_data.read_sz);
-	if (!ret)
-		tas2783_set_calib_params_to_device(tas_dev, tmp_val);
-	mutex_unlock(&tas_dev->calib_lock);
+	scoped_guard(mutex, &tas_dev->calib_lock) {
+		ret = tas2783_validate_calibdata(tas_dev, tas_dev->cali_data.data,
+						 tas_dev->cali_data.read_sz);
+		if (!ret)
+			tas2783_set_calib_params_to_device(tas_dev, tmp_val);
+	}
 
 	return ret;
 }
@@ -927,22 +928,23 @@ static s32 tas_sdw_hw_params(struct snd_pcm_substream *substream,
 		dev_err(tas_dev->dev,
 			"clear latch failed, err=%d", ret);
 
-	mutex_lock(&tas_dev->pde_lock);
-	/*
-	 * Sometimes, there is error returned during power on.
-	 * So added retry logic to ensure power on so that
-	 * port prepare succeeds
-	 */
-	do {
-		ret = regmap_write(tas_dev->regmap,
-				   SDW_SDCA_CTL(1, TAS2783_SDCA_ENT_PDE23,
-						TAS2783_SDCA_CTL_REQ_POW_STATE, 0),
-						TAS2783_SDCA_POW_STATE_ON);
-		if (!ret)
-			break;
-		usleep_range(2000, 2200);
-	} while (retry--);
-	mutex_unlock(&tas_dev->pde_lock);
+	scoped_guard(mutex, &tas_dev->pde_lock) {
+		/*
+		 * Sometimes, there is error returned during power on.
+		 * So added retry logic to ensure power on so that
+		 * port prepare succeeds
+		 */
+		do {
+			ret = regmap_write(tas_dev->regmap,
+					   SDW_SDCA_CTL(1, TAS2783_SDCA_ENT_PDE23,
+							TAS2783_SDCA_CTL_REQ_POW_STATE, 0),
+							TAS2783_SDCA_POW_STATE_ON);
+			if (!ret)
+				break;
+			usleep_range(2000, 2200);
+		} while (retry--);
+	}
+
 	if (ret)
 		return ret;
 
@@ -966,7 +968,6 @@ static s32 tas_sdw_hw_params(struct snd_pcm_substream *substream,
 static s32 tas_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
 			       struct snd_soc_dai *dai)
 {
-	s32 ret;
 	struct snd_soc_component *component = dai->component;
 	struct tas2783_prv *tas_dev =
 		snd_soc_component_get_drvdata(component);
@@ -975,14 +976,11 @@ static s32 tas_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
 
 	sdw_stream_remove_slave(tas_dev->sdw_peripheral, sdw_stream);
 
-	mutex_lock(&tas_dev->pde_lock);
-	ret = regmap_write(tas_dev->regmap,
-			   SDW_SDCA_CTL(1, TAS2783_SDCA_ENT_PDE23,
-					TAS2783_SDCA_CTL_REQ_POW_STATE, 0),
-			   TAS2783_SDCA_POW_STATE_OFF);
-	mutex_unlock(&tas_dev->pde_lock);
-
-	return ret;
+	guard(mutex)(&tas_dev->pde_lock);
+	return regmap_write(tas_dev->regmap,
+			    SDW_SDCA_CTL(1, TAS2783_SDCA_ENT_PDE23,
+					 TAS2783_SDCA_CTL_REQ_POW_STATE, 0),
+			    TAS2783_SDCA_POW_STATE_OFF);
 }
 
 static const struct snd_soc_dai_ops tas_dai_ops = {
-- 
2.43.0