[PATCH v3 22/26] ASoC: codecs: wm8962: 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.

Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/codecs/wm8962.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 2db822fc1de7..8a9598161b35 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
@@ -1564,11 +1565,10 @@ static int wm8962_dsp2_ena_put(struct snd_kcontrol *kcontrol,
 	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
 	struct wm8962_priv *wm8962 = snd_soc_component_get_drvdata(component);
 	int old = wm8962->dsp2_ena;
-	int ret = 0;
 	int dsp2_running = snd_soc_component_read(component, WM8962_DSP2_POWER_MANAGEMENT) &
 		WM8962_DSP2_ENA;
 
-	mutex_lock(&wm8962->dsp2_ena_lock);
+	guard(mutex)(&wm8962->dsp2_ena_lock);
 
 	if (ucontrol->value.integer.value[0])
 		wm8962->dsp2_ena |= 1 << shift;
@@ -1576,9 +1576,7 @@ static int wm8962_dsp2_ena_put(struct snd_kcontrol *kcontrol,
 		wm8962->dsp2_ena &= ~(1 << shift);
 
 	if (wm8962->dsp2_ena == old)
-		goto out;
-
-	ret = 1;
+		return 0;
 
 	if (dsp2_running) {
 		if (wm8962->dsp2_ena)
@@ -1587,10 +1585,7 @@ static int wm8962_dsp2_ena_put(struct snd_kcontrol *kcontrol,
 			wm8962_dsp2_stop(component);
 	}
 
-out:
-	mutex_unlock(&wm8962->dsp2_ena_lock);
-
-	return ret;
+	return 1;
 }
 
 /* The VU bits for the headphones are in a different register to the mute
-- 
2.43.0