[PATCH v2 11/24] ASoC: codecs: cros_ec_codec: 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: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/codecs/cros_ec_codec.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c
index 7dc5a7c3ca96..fd2d5d7f9276 100644
--- a/sound/soc/codecs/cros_ec_codec.c
+++ b/sound/soc/codecs/cros_ec_codec.c
@@ -12,6 +12,7 @@
 #include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/cleanup.h>
 #include <linux/io.h>
 #include <linux/jiffies.h>
 #include <linux/kernel.h>
@@ -608,10 +609,10 @@ static void wov_copy_work(struct work_struct *w)
 		container_of(w, struct cros_ec_codec_priv, wov_copy_work.work);
 	int ret;
 
-	mutex_lock(&priv->wov_dma_lock);
+	guard(mutex)(&priv->wov_dma_lock);
 	if (!priv->wov_substream) {
 		dev_warn(priv->dev, "no pcm substream\n");
-		goto leave;
+		return;
 	}
 
 	if (ec_codec_capable(priv, EC_CODEC_CAP_WOV_AUDIO_SHM))
@@ -624,8 +625,6 @@ static void wov_copy_work(struct work_struct *w)
 				      msecs_to_jiffies(10));
 	else if (ret)
 		dev_err(priv->dev, "failed to read audio data\n");
-leave:
-	mutex_unlock(&priv->wov_dma_lock);
 }
 
 static int wov_enable_get(struct snd_kcontrol *kcontrol,
@@ -895,12 +894,11 @@ static int wov_pcm_hw_params(struct snd_soc_component *component,
 	struct cros_ec_codec_priv *priv =
 		snd_soc_component_get_drvdata(component);
 
-	mutex_lock(&priv->wov_dma_lock);
+	guard(mutex)(&priv->wov_dma_lock);
 	priv->wov_substream = substream;
 	priv->wov_rp = priv->wov_wp = 0;
 	priv->wov_dma_offset = 0;
 	priv->wov_burst_read = true;
-	mutex_unlock(&priv->wov_dma_lock);
 
 	return 0;
 }
@@ -911,10 +909,10 @@ static int wov_pcm_hw_free(struct snd_soc_component *component,
 	struct cros_ec_codec_priv *priv =
 		snd_soc_component_get_drvdata(component);
 
-	mutex_lock(&priv->wov_dma_lock);
-	wov_queue_dequeue(priv, wov_queue_size(priv));
-	priv->wov_substream = NULL;
-	mutex_unlock(&priv->wov_dma_lock);
+	scoped_guard(mutex, &priv->wov_dma_lock) {
+		wov_queue_dequeue(priv, wov_queue_size(priv));
+		priv->wov_substream = NULL;
+	}
 
 	cancel_delayed_work_sync(&priv->wov_copy_work);
 
-- 
2.43.0