[PATCH v4 04/24] ASoC: codecs: arizona: 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: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/codecs/arizona.c | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index 8c683b0bb74c..4411165c3734 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -7,6 +7,7 @@
  * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
  */
 
+#include <linux/cleanup.h>
 #include <linux/delay.h>
 #include <linux/gcd.h>
 #include <linux/module.h>
@@ -1158,17 +1159,16 @@ int arizona_dvfs_up(struct snd_soc_component *component, unsigned int flags)
 	struct arizona_priv *priv = snd_soc_component_get_drvdata(component);
 	int ret = 0;
 
-	mutex_lock(&priv->dvfs_lock);
+	guard(mutex)(&priv->dvfs_lock);
 
 	if (!priv->dvfs_cached && !priv->dvfs_reqs) {
 		ret = arizona_dvfs_enable(component);
 		if (ret)
-			goto err;
+			return ret;
 	}
 
 	priv->dvfs_reqs |= flags;
-err:
-	mutex_unlock(&priv->dvfs_lock);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(arizona_dvfs_up);
@@ -1179,7 +1179,7 @@ int arizona_dvfs_down(struct snd_soc_component *component, unsigned int flags)
 	unsigned int old_reqs;
 	int ret = 0;
 
-	mutex_lock(&priv->dvfs_lock);
+	guard(mutex)(&priv->dvfs_lock);
 
 	old_reqs = priv->dvfs_reqs;
 	priv->dvfs_reqs &= ~flags;
@@ -1187,7 +1187,6 @@ int arizona_dvfs_down(struct snd_soc_component *component, unsigned int flags)
 	if (!priv->dvfs_cached && old_reqs && !priv->dvfs_reqs)
 		ret = arizona_dvfs_disable(component);
 
-	mutex_unlock(&priv->dvfs_lock);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(arizona_dvfs_down);
@@ -1199,7 +1198,7 @@ int arizona_dvfs_sysclk_ev(struct snd_soc_dapm_widget *w,
 	struct arizona_priv *priv = snd_soc_component_get_drvdata(component);
 	int ret = 0;
 
-	mutex_lock(&priv->dvfs_lock);
+	guard(mutex)(&priv->dvfs_lock);
 
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMU:
@@ -1222,7 +1221,6 @@ int arizona_dvfs_sysclk_ev(struct snd_soc_dapm_widget *w,
 		break;
 	}
 
-	mutex_unlock(&priv->dvfs_lock);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(arizona_dvfs_sysclk_ev);
@@ -1657,13 +1655,11 @@ static void arizona_wm5102_set_dac_comp(struct snd_soc_component *component,
 		{ 0x80, 0x0 },
 	};
 
-	mutex_lock(&arizona->dac_comp_lock);
-
-	dac_comp[1].def = arizona->dac_comp_coeff;
-	if (rate >= 176400)
-		dac_comp[2].def = arizona->dac_comp_enabled;
-
-	mutex_unlock(&arizona->dac_comp_lock);
+	scoped_guard(mutex, &arizona->dac_comp_lock) {
+		dac_comp[1].def = arizona->dac_comp_coeff;
+		if (rate >= 176400)
+			dac_comp[2].def = arizona->dac_comp_enabled;
+	}
 
 	regmap_multi_reg_write(arizona->regmap,
 			       dac_comp,
-- 
2.43.0