[PATCH 17/78] ASoC: codecs: cs43130: Use guard() for mutex locks

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at 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 at gmail.com>
---
 sound/soc/codecs/cs43130.c | 96 +++++++++++++++++++-------------------
 1 file changed, 47 insertions(+), 49 deletions(-)

diff --git a/sound/soc/codecs/cs43130.c b/sound/soc/codecs/cs43130.c
index e7b06f962790..5e7472e9e107 100644
--- a/sound/soc/codecs/cs43130.c
+++ b/sound/soc/codecs/cs43130.c
@@ -818,26 +818,26 @@ static int cs43130_dsd_hw_params(struct snd_pcm_substream *substream,
 	unsigned int required_clk;
 	u8 dsd_speed;
 
-	mutex_lock(&cs43130->clk_mutex);
-	if (!cs43130->clk_req) {
-		/* no DAI is currently using clk */
-		if (!(CS43130_MCLK_22M % params_rate(params)))
-			required_clk = CS43130_MCLK_22M;
-		else
-			required_clk = CS43130_MCLK_24M;
+	scoped_guard(mutex, &cs43130->clk_mutex) {
+		if (!cs43130->clk_req) {
+			/* no DAI is currently using clk */
+			if (!(CS43130_MCLK_22M % params_rate(params)))
+				required_clk = CS43130_MCLK_22M;
+			else
+				required_clk = CS43130_MCLK_24M;
+
+			cs43130_set_pll(component, 0, 0, cs43130->mclk, required_clk);
+			if (cs43130->pll_bypass)
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
+			else
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
+		}
 
-		cs43130_set_pll(component, 0, 0, cs43130->mclk, required_clk);
-		if (cs43130->pll_bypass)
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
-		else
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
+		cs43130->clk_req++;
+		if (cs43130->clk_req == 2)
+			cs43130_pcm_dsd_mix(true, cs43130->regmap);
 	}
 
-	cs43130->clk_req++;
-	if (cs43130->clk_req == 2)
-		cs43130_pcm_dsd_mix(true, cs43130->regmap);
-	mutex_unlock(&cs43130->clk_mutex);
-
 	switch (params_rate(params)) {
 	case 176400:
 		dsd_speed = 0;
@@ -881,26 +881,26 @@ static int cs43130_hw_params(struct snd_pcm_substream *substream,
 	unsigned int required_clk;
 	u8 dsd_speed;
 
-	mutex_lock(&cs43130->clk_mutex);
-	if (!cs43130->clk_req) {
-		/* no DAI is currently using clk */
-		if (!(CS43130_MCLK_22M % params_rate(params)))
-			required_clk = CS43130_MCLK_22M;
-		else
-			required_clk = CS43130_MCLK_24M;
+	scoped_guard(mutex, &cs43130->clk_mutex) {
+		if (!cs43130->clk_req) {
+			/* no DAI is currently using clk */
+			if (!(CS43130_MCLK_22M % params_rate(params)))
+				required_clk = CS43130_MCLK_22M;
+			else
+				required_clk = CS43130_MCLK_24M;
+
+			cs43130_set_pll(component, 0, 0, cs43130->mclk, required_clk);
+			if (cs43130->pll_bypass)
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
+			else
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
+		}
 
-		cs43130_set_pll(component, 0, 0, cs43130->mclk, required_clk);
-		if (cs43130->pll_bypass)
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
-		else
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
+		cs43130->clk_req++;
+		if (cs43130->clk_req == 2)
+			cs43130_pcm_dsd_mix(true, cs43130->regmap);
 	}
 
-	cs43130->clk_req++;
-	if (cs43130->clk_req == 2)
-		cs43130_pcm_dsd_mix(true, cs43130->regmap);
-	mutex_unlock(&cs43130->clk_mutex);
-
 	switch (dai->id) {
 	case CS43130_ASP_DOP_DAI:
 	case CS43130_XSP_DOP_DAI:
@@ -988,14 +988,13 @@ static int cs43130_hw_free(struct snd_pcm_substream *substream,
 	struct snd_soc_component *component = dai->component;
 	struct cs43130_private *cs43130 = snd_soc_component_get_drvdata(component);
 
-	mutex_lock(&cs43130->clk_mutex);
+	guard(mutex)(&cs43130->clk_mutex);
 	cs43130->clk_req--;
 	if (!cs43130->clk_req) {
 		/* no DAI is currently using clk */
 		cs43130_change_clksrc(component, CS43130_MCLK_SRC_RCO);
 		cs43130_pcm_dsd_mix(false, cs43130->regmap);
 	}
-	mutex_unlock(&cs43130->clk_mutex);
 
 	return 0;
 }
@@ -2132,18 +2131,18 @@ static void cs43130_imp_meas(struct work_struct *wk)
 
 	cs43130->hpload_done = false;
 
-	mutex_lock(&cs43130->clk_mutex);
-	if (!cs43130->clk_req) {
-		/* clk not in use */
-		cs43130_set_pll(component, 0, 0, cs43130->mclk, CS43130_MCLK_22M);
-		if (cs43130->pll_bypass)
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
-		else
-			cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
-	}
+	scoped_guard(mutex, &cs43130->clk_mutex) {
+		if (!cs43130->clk_req) {
+			/* clk not in use */
+			cs43130_set_pll(component, 0, 0, cs43130->mclk, CS43130_MCLK_22M);
+			if (cs43130->pll_bypass)
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_EXT);
+			else
+				cs43130_change_clksrc(component, CS43130_MCLK_SRC_PLL);
+		}
 
-	cs43130->clk_req++;
-	mutex_unlock(&cs43130->clk_mutex);
+		cs43130->clk_req++;
+	}
 
 	regmap_read(cs43130->regmap, CS43130_INT_STATUS_4, &reg);
 
@@ -2215,12 +2214,11 @@ static void cs43130_imp_meas(struct work_struct *wk)
 	regmap_multi_reg_write(cs43130->regmap, hp_cln_seq,
 			       ARRAY_SIZE(hp_cln_seq));
 
-	mutex_lock(&cs43130->clk_mutex);
+	guard(mutex)(&cs43130->clk_mutex);
 	cs43130->clk_req--;
 	/* clk not in use */
 	if (!cs43130->clk_req)
 		cs43130_change_clksrc(component, CS43130_MCLK_SRC_RCO);
-	mutex_unlock(&cs43130->clk_mutex);
 }
 
 static irqreturn_t cs43130_irq_thread(int irq, void *data)
-- 
2.43.0