[PATCH v3 17/27] ASoC: codecs: rt5514-spi: 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/rt5514-spi.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 199507d12841..91290bfe8daa 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -6,6 +6,7 @@
  * Author: Oder Chiou <oder_chiou@realtek.com>
  */
 
+#include <linux/cleanup.h>
 #include <linux/module.h>
 #include <linux/input.h>
 #include <linux/spi/spi.h>
@@ -79,17 +80,17 @@ static void rt5514_spi_copy_work(struct work_struct *work)
 	unsigned int cur_wp, remain_data;
 	u8 buf[8];
 
-	mutex_lock(&rt5514_dsp->dma_lock);
+	guard(mutex)(&rt5514_dsp->dma_lock);
 	if (!rt5514_dsp->substream) {
 		dev_err(rt5514_dsp->dev, "No pcm substream\n");
-		goto done;
+		return;
 	}
 
 	runtime = rt5514_dsp->substream->runtime;
 	period_bytes = snd_pcm_lib_period_bytes(rt5514_dsp->substream);
 	if (!period_bytes) {
 		schedule_delayed_work(&rt5514_dsp->copy_work, 5);
-		goto done;
+		return;
 	}
 
 	if (rt5514_dsp->buf_size % period_bytes)
@@ -111,7 +112,7 @@ static void rt5514_spi_copy_work(struct work_struct *work)
 
 		if (remain_data < period_bytes) {
 			schedule_delayed_work(&rt5514_dsp->copy_work, 5);
-			goto done;
+			return;
 		}
 	}
 
@@ -146,9 +147,6 @@ static void rt5514_spi_copy_work(struct work_struct *work)
 	snd_pcm_period_elapsed(rt5514_dsp->substream);
 
 	schedule_delayed_work(&rt5514_dsp->copy_work, 5);
-
-done:
-	mutex_unlock(&rt5514_dsp->dma_lock);
 }
 
 static void rt5514_schedule_copy(struct rt5514_dsp *rt5514_dsp)
@@ -216,7 +214,7 @@ static int rt5514_spi_hw_params(struct snd_soc_component *component,
 		snd_soc_component_get_drvdata(component);
 	u8 buf[8];
 
-	mutex_lock(&rt5514_dsp->dma_lock);
+	guard(mutex)(&rt5514_dsp->dma_lock);
 	rt5514_dsp->substream = substream;
 	rt5514_dsp->dma_offset = 0;
 
@@ -225,8 +223,6 @@ static int rt5514_spi_hw_params(struct snd_soc_component *component,
 	if (buf[0] & RT5514_IRQ_STATUS_BIT)
 		rt5514_schedule_copy(rt5514_dsp);
 
-	mutex_unlock(&rt5514_dsp->dma_lock);
-
 	return 0;
 }
 
@@ -236,9 +232,8 @@ static int rt5514_spi_hw_free(struct snd_soc_component *component,
 	struct rt5514_dsp *rt5514_dsp =
 		snd_soc_component_get_drvdata(component);
 
-	mutex_lock(&rt5514_dsp->dma_lock);
-	rt5514_dsp->substream = NULL;
-	mutex_unlock(&rt5514_dsp->dma_lock);
+	scoped_guard(mutex, &rt5514_dsp->dma_lock)
+		rt5514_dsp->substream = NULL;
 
 	cancel_delayed_work_sync(&rt5514_dsp->copy_work);
 
-- 
2.43.0