[PATCH v2 01/26] ASoC: codecs: sigmadsp: 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/sigmadsp.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/sigmadsp.c b/sound/soc/codecs/sigmadsp.c
index 2e08fde3989c..b7dbeb237447 100644
--- a/sound/soc/codecs/sigmadsp.c
+++ b/sound/soc/codecs/sigmadsp.c
@@ -5,6 +5,7 @@
  * Copyright 2009-2014 Analog Devices Inc.
  */
 
+#include <linux/cleanup.h>
 #include <linux/crc32.h>
 #include <linux/firmware.h>
 #include <linux/kernel.h>
@@ -135,7 +136,7 @@ static int sigmadsp_ctrl_put(struct snd_kcontrol *kcontrol,
 	uint8_t *data;
 	int ret = 0;
 
-	mutex_lock(&sigmadsp->lock);
+	guard(mutex)(&sigmadsp->lock);
 
 	data = ucontrol->value.bytes.data;
 
@@ -148,8 +149,6 @@ static int sigmadsp_ctrl_put(struct snd_kcontrol *kcontrol,
 			ctrl->cached = true;
 	}
 
-	mutex_unlock(&sigmadsp->lock);
-
 	return ret;
 }
 
@@ -160,7 +159,7 @@ static int sigmadsp_ctrl_get(struct snd_kcontrol *kcontrol,
 	struct sigmadsp *sigmadsp = snd_kcontrol_chip(kcontrol);
 	int ret = 0;
 
-	mutex_lock(&sigmadsp->lock);
+	guard(mutex)(&sigmadsp->lock);
 
 	if (!ctrl->cached) {
 		ret = sigmadsp_read(sigmadsp, ctrl->addr, ctrl->cache,
@@ -174,8 +173,6 @@ static int sigmadsp_ctrl_get(struct snd_kcontrol *kcontrol,
 			ctrl->num_bytes);
 	}
 
-	mutex_unlock(&sigmadsp->lock);
-
 	return ret;
 }
 
@@ -677,10 +674,10 @@ static void sigmadsp_activate_ctrl(struct sigmadsp *sigmadsp,
 		return;
 	changed = snd_ctl_activate_id(card, &ctrl->kcontrol->id, active);
 	if (active && changed > 0) {
-		mutex_lock(&sigmadsp->lock);
-		if (ctrl->cached)
-			sigmadsp_ctrl_write(sigmadsp, ctrl, ctrl->cache);
-		mutex_unlock(&sigmadsp->lock);
+		scoped_guard(mutex, &sigmadsp->lock) {
+			if (ctrl->cached)
+				sigmadsp_ctrl_write(sigmadsp, ctrl, ctrl->cache);
+		}
 	}
 }
 
-- 
2.43.0