[PATCH 00/11] ASoC: fsl: Use guard() for mutex & spin locks

[PATCH 00/11] ASoC: fsl: Use guard() for mutex & spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Hi all,

This series converts mutex & spinlock handling in the FSL sound drivers
to use guard() helpers.
The changes are code cleanup only and should have no functional impact.

I have compile-tested all affected files except `mpc5200_dma` and 
`mpc5200_psc_ac97`, as I have not yet found the correct configuration 
needed to enable those drivers.

Best regards,
Phuc

bui duc phuc (11):
  ASoC: fsl_asrc: Use guard() for spin locks
  ASoC: fsl_audmix: Use guard() for spin locks
  ASoC: fsl_easrc: Use guard() for spin locks
  ASoC: fsl_esai: Use guard() for spin locks
  ASoC: fsl_spdif: Use guard() for spin locks
  ASoC: fsl_ssi: Use guard() for mutex locks
  ASoC: fsl_xcvr: Use guard() for spin locks
  ASoC: imx-audio-rpmsg: Use guard() for spin locks
  ASoC: fsl_rpmsg: Use guard() for mutex & spin locks
  ASoC: fsl: mpc5200_dma: Use guard() for spin locks
  ASoC: fsl: mpc5200_psc_ac97: Use guard() for mutex locks

 sound/soc/fsl/fsl_asrc.c         | 10 +----
 sound/soc/fsl/fsl_audmix.c       | 11 ++---
 sound/soc/fsl/fsl_easrc.c        | 36 +++++------------
 sound/soc/fsl/fsl_esai.c         | 16 +++-----
 sound/soc/fsl/fsl_spdif.c        |  8 +---
 sound/soc/fsl/fsl_ssi.c          | 13 ++----
 sound/soc/fsl/fsl_xcvr.c         | 29 ++++++--------
 sound/soc/fsl/imx-audio-rpmsg.c  | 25 ++++++------
 sound/soc/fsl/imx-pcm-rpmsg.c    | 69 ++++++++++++++------------------
 sound/soc/fsl/mpc5200_dma.c      | 56 +++++++++++++-------------
 sound/soc/fsl/mpc5200_psc_ac97.c | 34 ++++++----------
 11 files changed, 121 insertions(+), 186 deletions(-)

-- 
2.43.0

[PATCH 01/11] ASoC: fsl_asrc: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_asrc.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 5fda9b647c70..0b28bcfa47fe 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -222,10 +222,9 @@ static int fsl_asrc_request_pair(int channels, struct fsl_asrc_pair *pair)
 	enum asrc_pair_index index = ASRC_INVALID_PAIR;
 	struct fsl_asrc *asrc = pair->asrc;
 	struct device *dev = &asrc->pdev->dev;
-	unsigned long lock_flags;
 	int i, ret = 0;
 
-	spin_lock_irqsave(&asrc->lock, lock_flags);
+	guard(spinlock_irqsave)(&asrc->lock);
 
 	for (i = ASRC_PAIR_A; i < ASRC_PAIR_MAX_NUM; i++) {
 		if (asrc->pair[i] != NULL)
@@ -250,8 +249,6 @@ static int fsl_asrc_request_pair(int channels, struct fsl_asrc_pair *pair)
 		pair->index = index;
 	}
 
-	spin_unlock_irqrestore(&asrc->lock, lock_flags);
-
 	return ret;
 }
 
@@ -265,19 +262,16 @@ static void fsl_asrc_release_pair(struct fsl_asrc_pair *pair)
 {
 	struct fsl_asrc *asrc = pair->asrc;
 	enum asrc_pair_index index = pair->index;
-	unsigned long lock_flags;
 
 	/* Make sure the pair is disabled */
 	regmap_update_bits(asrc->regmap, REG_ASRCTR,
 			   ASRCTR_ASRCEi_MASK(index), 0);
 
-	spin_lock_irqsave(&asrc->lock, lock_flags);
+	guard(spinlock_irqsave)(&asrc->lock);
 
 	asrc->channel_avail += pair->channels;
 	asrc->pair[index] = NULL;
 	pair->error = 0;
-
-	spin_unlock_irqrestore(&asrc->lock, lock_flags);
 }
 
 /**
-- 
2.43.0

[PATCH 02/11] ASoC: fsl_audmix: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_audmix.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/sound/soc/fsl/fsl_audmix.c b/sound/soc/fsl/fsl_audmix.c
index 40a3b7432174..066239c64037 100644
--- a/sound/soc/fsl/fsl_audmix.c
+++ b/sound/soc/fsl/fsl_audmix.c
@@ -280,7 +280,6 @@ static int fsl_audmix_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 				  struct snd_soc_dai *dai)
 {
 	struct fsl_audmix *priv = snd_soc_dai_get_drvdata(dai);
-	unsigned long lock_flags;
 
 	/* Capture stream shall not be handled */
 	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
@@ -290,16 +289,14 @@ static int fsl_audmix_dai_trigger(struct snd_pcm_substream *substream, int cmd,
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		spin_lock_irqsave(&priv->lock, lock_flags);
-		priv->tdms |= BIT(dai->driver->id);
-		spin_unlock_irqrestore(&priv->lock, lock_flags);
+		scoped_guard(spinlock_irqsave, &priv->lock)
+			priv->tdms |= BIT(dai->driver->id);
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		spin_lock_irqsave(&priv->lock, lock_flags);
-		priv->tdms &= ~BIT(dai->driver->id);
-		spin_unlock_irqrestore(&priv->lock, lock_flags);
+		scoped_guard(spinlock_irqsave, &priv->lock)
+			priv->tdms &= ~BIT(dai->driver->id);
 		break;
 	default:
 		return -EINVAL;
-- 
2.43.0

[PATCH 03/11] ASoC: fsl_easrc: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_easrc.c | 36 ++++++++++--------------------------
 1 file changed, 10 insertions(+), 26 deletions(-)

diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index 114a6c0b6b73..edfd943197a0 100644
--- a/sound/soc/fsl/fsl_easrc.c
+++ b/sound/soc/fsl/fsl_easrc.c
@@ -1025,7 +1025,6 @@ static int fsl_easrc_config_context(struct fsl_asrc *easrc, unsigned int ctx_id)
 	struct fsl_easrc_ctx_priv *ctx_priv;
 	struct fsl_asrc_pair *ctx;
 	struct device *dev;
-	unsigned long lock_flags;
 	int ret;
 
 	if (!easrc)
@@ -1053,9 +1052,8 @@ static int fsl_easrc_config_context(struct fsl_asrc *easrc, unsigned int ctx_id)
 	if (ret)
 		return ret;
 
-	spin_lock_irqsave(&easrc->lock, lock_flags);
-	ret = fsl_easrc_config_slot(easrc, ctx->index);
-	spin_unlock_irqrestore(&easrc->lock, lock_flags);
+	scoped_guard(spinlock_irqsave, &easrc->lock)
+		ret = fsl_easrc_config_slot(easrc, ctx->index);
 	if (ret)
 		return ret;
 
@@ -1301,13 +1299,12 @@ static int fsl_easrc_request_context(int channels, struct fsl_asrc_pair *ctx)
 	enum asrc_pair_index index = ASRC_INVALID_PAIR;
 	struct fsl_asrc *easrc = ctx->asrc;
 	struct device *dev;
-	unsigned long lock_flags;
 	int ret = 0;
 	int i;
 
 	dev = &easrc->pdev->dev;
 
-	spin_lock_irqsave(&easrc->lock, lock_flags);
+	guard(spinlock_irqsave)(&easrc->lock);
 
 	for (i = ASRC_PAIR_A; i < EASRC_CTX_MAX_NUM; i++) {
 		if (easrc->pair[i])
@@ -1331,8 +1328,6 @@ static int fsl_easrc_request_context(int channels, struct fsl_asrc_pair *ctx)
 		easrc->channel_avail -= channels;
 	}
 
-	spin_unlock_irqrestore(&easrc->lock, lock_flags);
-
 	return ret;
 }
 
@@ -1343,7 +1338,6 @@ static int fsl_easrc_request_context(int channels, struct fsl_asrc_pair *ctx)
  */
 static void fsl_easrc_release_context(struct fsl_asrc_pair *ctx)
 {
-	unsigned long lock_flags;
 	struct fsl_asrc *easrc;
 
 	if (!ctx)
@@ -1351,14 +1345,12 @@ static void fsl_easrc_release_context(struct fsl_asrc_pair *ctx)
 
 	easrc = ctx->asrc;
 
-	spin_lock_irqsave(&easrc->lock, lock_flags);
+	guard(spinlock_irqsave)(&easrc->lock);
 
 	fsl_easrc_release_slot(easrc, ctx->index);
 
 	easrc->channel_avail += ctx->channels;
 	easrc->pair[ctx->index] = NULL;
-
-	spin_unlock_irqrestore(&easrc->lock, lock_flags);
 }
 
 /*
@@ -2292,15 +2284,13 @@ static int fsl_easrc_runtime_suspend(struct device *dev)
 {
 	struct fsl_asrc *easrc = dev_get_drvdata(dev);
 	struct fsl_easrc_priv *easrc_priv = easrc->private;
-	unsigned long lock_flags;
 
 	regcache_cache_only(easrc->regmap, true);
 
 	clk_disable_unprepare(easrc->mem_clk);
 
-	spin_lock_irqsave(&easrc->lock, lock_flags);
-	easrc_priv->firmware_loaded = 0;
-	spin_unlock_irqrestore(&easrc->lock, lock_flags);
+	scoped_guard(spinlock_irqsave, &easrc->lock)
+		easrc_priv->firmware_loaded = 0;
 
 	return 0;
 }
@@ -2311,7 +2301,6 @@ static int fsl_easrc_runtime_resume(struct device *dev)
 	struct fsl_easrc_priv *easrc_priv = easrc->private;
 	struct fsl_easrc_ctx_priv *ctx_priv;
 	struct fsl_asrc_pair *ctx;
-	unsigned long lock_flags;
 	int ret;
 	int i;
 
@@ -2323,13 +2312,11 @@ static int fsl_easrc_runtime_resume(struct device *dev)
 	regcache_mark_dirty(easrc->regmap);
 	regcache_sync(easrc->regmap);
 
-	spin_lock_irqsave(&easrc->lock, lock_flags);
-	if (easrc_priv->firmware_loaded) {
-		spin_unlock_irqrestore(&easrc->lock, lock_flags);
-		goto skip_load;
+	scoped_guard(spinlock_irqsave, &easrc->lock) {
+		if (easrc_priv->firmware_loaded)
+			return 0;
+		easrc_priv->firmware_loaded = 1;
 	}
-	easrc_priv->firmware_loaded = 1;
-	spin_unlock_irqrestore(&easrc->lock, lock_flags);
 
 	ret = fsl_easrc_get_firmware(easrc);
 	if (ret) {
@@ -2377,9 +2364,6 @@ static int fsl_easrc_runtime_resume(struct device *dev)
 			goto disable_mem_clk;
 	}
 
-skip_load:
-	return 0;
-
 disable_mem_clk:
 	clk_disable_unprepare(easrc->mem_clk);
 	return ret;
-- 
2.43.0

[PATCH 04/11] ASoC: fsl_esai: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_esai.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index cde0b0c6c1ef..4a530a6c33f0 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -709,10 +709,9 @@ static void fsl_esai_hw_reset(struct work_struct *work)
 {
 	struct fsl_esai *esai_priv = container_of(work, struct fsl_esai, work);
 	bool tx = true, rx = false, enabled[2];
-	unsigned long lock_flags;
 	u32 tfcr, rfcr;
 
-	spin_lock_irqsave(&esai_priv->lock, lock_flags);
+	guard(spinlock_irqsave)(&esai_priv->lock);
 	/* Save the registers */
 	regmap_read(esai_priv->regmap, REG_ESAI_TFCR, &tfcr);
 	regmap_read(esai_priv->regmap, REG_ESAI_RFCR, &rfcr);
@@ -750,8 +749,6 @@ static void fsl_esai_hw_reset(struct work_struct *work)
 		fsl_esai_trigger_start(esai_priv, tx);
 	if (enabled[rx])
 		fsl_esai_trigger_start(esai_priv, rx);
-
-	spin_unlock_irqrestore(&esai_priv->lock, lock_flags);
 }
 
 static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
@@ -759,7 +756,6 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
 {
 	struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
-	unsigned long lock_flags;
 
 	esai_priv->channels[tx] = substream->runtime->channels;
 
@@ -767,16 +763,14 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_RESUME:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		spin_lock_irqsave(&esai_priv->lock, lock_flags);
-		fsl_esai_trigger_start(esai_priv, tx);
-		spin_unlock_irqrestore(&esai_priv->lock, lock_flags);
+		scoped_guard(spinlock_irqsave, &esai_priv->lock)
+			fsl_esai_trigger_start(esai_priv, tx);
 		break;
 	case SNDRV_PCM_TRIGGER_SUSPEND:
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		spin_lock_irqsave(&esai_priv->lock, lock_flags);
-		fsl_esai_trigger_stop(esai_priv, tx);
-		spin_unlock_irqrestore(&esai_priv->lock, lock_flags);
+		scoped_guard(spinlock_irqsave, &esai_priv->lock)
+			fsl_esai_trigger_stop(esai_priv, tx);
 		break;
 	default:
 		return -EINVAL;
-- 
2.43.0

[PATCH 05/11] ASoC: fsl_spdif: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_spdif.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 1b9be85b34c2..ad1206ed9882 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -853,17 +853,15 @@ static int fsl_spdif_subcode_get(struct snd_kcontrol *kcontrol,
 	struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
 	struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
 	struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
-	unsigned long flags;
 	int ret = -EAGAIN;
 
-	spin_lock_irqsave(&ctrl->ctl_lock, flags);
+	guard(spinlock_irqsave)(&ctrl->ctl_lock);
 	if (ctrl->ready_buf) {
 		int idx = (ctrl->ready_buf - 1) * SPDIF_UBITS_SIZE;
 		memcpy(&ucontrol->value.iec958.subcode[0],
 				&ctrl->subcode[idx], SPDIF_UBITS_SIZE);
 		ret = 0;
 	}
-	spin_unlock_irqrestore(&ctrl->ctl_lock, flags);
 
 	return ret;
 }
@@ -885,17 +883,15 @@ static int fsl_spdif_qget(struct snd_kcontrol *kcontrol,
 	struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
 	struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
 	struct spdif_mixer_control *ctrl = &spdif_priv->fsl_spdif_control;
-	unsigned long flags;
 	int ret = -EAGAIN;
 
-	spin_lock_irqsave(&ctrl->ctl_lock, flags);
+	guard(spinlock_irqsave)(&ctrl->ctl_lock);
 	if (ctrl->ready_buf) {
 		int idx = (ctrl->ready_buf - 1) * SPDIF_QSUB_SIZE;
 		memcpy(&ucontrol->value.bytes.data[0],
 				&ctrl->qsub[idx], SPDIF_QSUB_SIZE);
 		ret = 0;
 	}
-	spin_unlock_irqrestore(&ctrl->ctl_lock, flags);
 
 	return ret;
 }
-- 
2.43.0

[PATCH 06/11] ASoC: fsl_ssi: Use guard() for mutex locks

[phucduc.bui]

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/fsl/fsl_ssi.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index b2e1da1781ae..dc022976c982 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -1218,13 +1218,13 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
 	if (reg > 0x7f)
 		return;
 
-	mutex_lock(&fsl_ac97_data->ac97_reg_lock);
+	guard(mutex)(&fsl_ac97_data->ac97_reg_lock);
 
 	ret = clk_prepare_enable(fsl_ac97_data->clk);
 	if (ret) {
 		pr_err("ac97 write clk_prepare_enable failed: %d\n",
 			ret);
-		goto ret_unlock;
+		return;
 	}
 
 	lreg = reg <<  12;
@@ -1238,9 +1238,6 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
 	udelay(100);
 
 	clk_disable_unprepare(fsl_ac97_data->clk);
-
-ret_unlock:
-	mutex_unlock(&fsl_ac97_data->ac97_reg_lock);
 }
 
 static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,
@@ -1252,12 +1249,12 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,
 	unsigned int lreg;
 	int ret;
 
-	mutex_lock(&fsl_ac97_data->ac97_reg_lock);
+	guard(mutex)(&fsl_ac97_data->ac97_reg_lock);
 
 	ret = clk_prepare_enable(fsl_ac97_data->clk);
 	if (ret) {
 		pr_err("ac97 read clk_prepare_enable failed: %d\n", ret);
-		goto ret_unlock;
+		return val;
 	}
 
 	lreg = (reg & 0x7f) <<  12;
@@ -1272,8 +1269,6 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,
 
 	clk_disable_unprepare(fsl_ac97_data->clk);
 
-ret_unlock:
-	mutex_unlock(&fsl_ac97_data->ac97_reg_lock);
 	return val;
 }
 
-- 
2.43.0

[PATCH 07/11] ASoC: fsl_xcvr: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/fsl_xcvr.c | 29 ++++++++++++-----------------
 1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index 6677d3bf36ec..41d100500534 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -797,10 +797,9 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 {
 	struct fsl_xcvr *xcvr = snd_soc_dai_get_drvdata(dai);
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
-	unsigned long lock_flags;
 	int ret = 0;
 
-	spin_lock_irqsave(&xcvr->lock, lock_flags);
+	guard(spinlock_irqsave)(&xcvr->lock);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
@@ -812,7 +811,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 					 FSL_XCVR_EXT_CTRL_DPTH_RESET(tx));
 		if (ret < 0) {
 			dev_err(dai->dev, "Failed to set DPATH RESET: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		if (tx) {
@@ -824,7 +823,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 						   FSL_XCVR_ISR_CMDC_TX_EN);
 				if (ret < 0) {
 					dev_err(dai->dev, "err updating isr %d\n", ret);
-					goto release_lock;
+					return ret;
 				}
 				fallthrough;
 			case FSL_XCVR_MODE_SPDIF:
@@ -833,7 +832,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 						      FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX);
 				if (ret < 0) {
 					dev_err(dai->dev, "Failed to start DATA_TX: %d\n", ret);
-					goto release_lock;
+					return ret;
 				}
 				break;
 			}
@@ -844,14 +843,14 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 					 FSL_XCVR_EXT_CTRL_DMA_DIS(tx), 0);
 		if (ret < 0) {
 			dev_err(dai->dev, "Failed to enable DMA: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
 					 FSL_XCVR_IRQ_EARC_ALL, FSL_XCVR_IRQ_EARC_ALL);
 		if (ret < 0) {
 			dev_err(dai->dev, "Error while setting IER0: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		/* clear DPATH RESET */
@@ -860,7 +859,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 					 0);
 		if (ret < 0) {
 			dev_err(dai->dev, "Failed to clear DPATH RESET: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		break;
@@ -873,14 +872,14 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 					 FSL_XCVR_EXT_CTRL_DMA_DIS(tx));
 		if (ret < 0) {
 			dev_err(dai->dev, "Failed to disable DMA: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		ret = regmap_update_bits(xcvr->regmap, FSL_XCVR_EXT_IER0,
 					 FSL_XCVR_IRQ_EARC_ALL, 0);
 		if (ret < 0) {
 			dev_err(dai->dev, "Failed to clear IER0: %d\n", ret);
-			goto release_lock;
+			return ret;
 		}
 
 		if (tx) {
@@ -891,7 +890,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 							FSL_XCVR_TX_DPTH_CTRL_STRT_DATA_TX);
 				if (ret < 0) {
 					dev_err(dai->dev, "Failed to stop DATA_TX: %d\n", ret);
-					goto release_lock;
+					return ret;
 				}
 				if (xcvr->soc_data->spdif_only)
 					break;
@@ -905,7 +904,7 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 				if (ret < 0) {
 					dev_err(dai->dev,
 						"Err updating ISR %d\n", ret);
-					goto release_lock;
+					return ret;
 				}
 				break;
 			}
@@ -916,8 +915,6 @@ static int fsl_xcvr_trigger(struct snd_pcm_substream *substream, int cmd,
 		break;
 	}
 
-release_lock:
-	spin_unlock_irqrestore(&xcvr->lock, lock_flags);
 	return ret;
 }
 
@@ -1448,11 +1445,10 @@ static void reset_rx_work(struct work_struct *work)
 {
 	struct fsl_xcvr *xcvr = container_of(work, struct fsl_xcvr, work_rst);
 	struct device *dev = &xcvr->pdev->dev;
-	unsigned long lock_flags;
 	u32 ext_ctrl;
 
 	dev_dbg(dev, "reset rx path\n");
-	spin_lock_irqsave(&xcvr->lock, lock_flags);
+	guard(spinlock_irqsave)(&xcvr->lock);
 	regmap_read(xcvr->regmap, FSL_XCVR_EXT_CTRL, &ext_ctrl);
 
 	if (!(ext_ctrl & FSL_XCVR_EXT_CTRL_DMA_RD_DIS)) {
@@ -1469,7 +1465,6 @@ static void reset_rx_work(struct work_struct *work)
 				   FSL_XCVR_EXT_CTRL_RX_DPTH_RESET,
 				   0);
 	}
-	spin_unlock_irqrestore(&xcvr->lock, lock_flags);
 }
 
 static irqreturn_t irq0_isr(int irq, void *devid)
-- 
2.43.0

[PATCH 08/11] ASoC: imx-audio-rpmsg: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/imx-audio-rpmsg.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/sound/soc/fsl/imx-audio-rpmsg.c b/sound/soc/fsl/imx-audio-rpmsg.c
index 38aafb8954c7..b55dfbdb4502 100644
--- a/sound/soc/fsl/imx-audio-rpmsg.c
+++ b/sound/soc/fsl/imx-audio-rpmsg.c
@@ -22,7 +22,6 @@ static int imx_audio_rpmsg_cb(struct rpmsg_device *rpdev, void *data, int len,
 	struct rpmsg_r_msg *r_msg = (struct rpmsg_r_msg *)data;
 	struct rpmsg_info *info;
 	struct rpmsg_msg *msg;
-	unsigned long flags;
 
 	if (!rpmsg->rpmsg_pdev)
 		return 0;
@@ -37,21 +36,21 @@ static int imx_audio_rpmsg_cb(struct rpmsg_device *rpdev, void *data, int len,
 		/* TYPE C is notification from M core */
 		switch (r_msg->header.cmd) {
 		case TX_PERIOD_DONE:
-			spin_lock_irqsave(&info->lock[TX], flags);
-			msg = &info->msg[TX_PERIOD_DONE + MSG_TYPE_A_NUM];
-			msg->r_msg.param.buffer_tail =
-						r_msg->param.buffer_tail;
-			msg->r_msg.param.buffer_tail %= info->num_period[TX];
-			spin_unlock_irqrestore(&info->lock[TX], flags);
+			scoped_guard(spinlock_irqsave, &info->lock[TX]) {
+				msg = &info->msg[TX_PERIOD_DONE + MSG_TYPE_A_NUM];
+				msg->r_msg.param.buffer_tail =
+							r_msg->param.buffer_tail;
+				msg->r_msg.param.buffer_tail %= info->num_period[TX];
+			}
 			info->callback[TX](info->callback_param[TX]);
 			break;
 		case RX_PERIOD_DONE:
-			spin_lock_irqsave(&info->lock[RX], flags);
-			msg = &info->msg[RX_PERIOD_DONE + MSG_TYPE_A_NUM];
-			msg->r_msg.param.buffer_tail =
-						r_msg->param.buffer_tail;
-			msg->r_msg.param.buffer_tail %= info->num_period[1];
-			spin_unlock_irqrestore(&info->lock[RX], flags);
+			scoped_guard(spinlock_irqsave, &info->lock[RX]) {
+				msg = &info->msg[RX_PERIOD_DONE + MSG_TYPE_A_NUM];
+				msg->r_msg.param.buffer_tail =
+							r_msg->param.buffer_tail;
+				msg->r_msg.param.buffer_tail %= info->num_period[1];
+			}
 			info->callback[RX](info->callback_param[RX]);
 			break;
 		default:
-- 
2.43.0

[PATCH 09/11] ASoC: fsl_rpmsg: Use guard() for mutex & spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for mutex & spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/imx-pcm-rpmsg.c | 69 +++++++++++++++--------------------
 1 file changed, 30 insertions(+), 39 deletions(-)

diff --git a/sound/soc/fsl/imx-pcm-rpmsg.c b/sound/soc/fsl/imx-pcm-rpmsg.c
index 031e5272215d..7210393dfa5d 100644
--- a/sound/soc/fsl/imx-pcm-rpmsg.c
+++ b/sound/soc/fsl/imx-pcm-rpmsg.c
@@ -39,10 +39,9 @@ static int imx_rpmsg_pcm_send_message(struct rpmsg_msg *msg,
 	struct rpmsg_device *rpdev = info->rpdev;
 	int ret = 0;
 
-	mutex_lock(&info->msg_lock);
+	guard(mutex)(&info->msg_lock);
 	if (!rpdev) {
 		dev_err(info->dev, "rpmsg channel not ready\n");
-		mutex_unlock(&info->msg_lock);
 		return -EINVAL;
 	}
 
@@ -55,15 +54,12 @@ static int imx_rpmsg_pcm_send_message(struct rpmsg_msg *msg,
 			 sizeof(struct rpmsg_s_msg));
 	if (ret) {
 		dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret);
-		mutex_unlock(&info->msg_lock);
 		return ret;
 	}
 
 	/* No receive msg for TYPE_C command */
-	if (msg->s_msg.header.type == MSG_TYPE_C) {
-		mutex_unlock(&info->msg_lock);
+	if (msg->s_msg.header.type == MSG_TYPE_C)
 		return 0;
-	}
 
 	/* wait response from rpmsg */
 	ret = wait_for_completion_timeout(&info->cmd_complete,
@@ -71,7 +67,6 @@ static int imx_rpmsg_pcm_send_message(struct rpmsg_msg *msg,
 	if (!ret) {
 		dev_err(&rpdev->dev, "rpmsg_send cmd %d timeout!\n",
 			msg->s_msg.header.cmd);
-		mutex_unlock(&info->msg_lock);
 		return -ETIMEDOUT;
 	}
 
@@ -100,8 +95,6 @@ static int imx_rpmsg_pcm_send_message(struct rpmsg_msg *msg,
 	dev_dbg(&rpdev->dev, "cmd:%d, resp %d\n", msg->s_msg.header.cmd,
 		info->r_msg.param.resp);
 
-	mutex_unlock(&info->msg_lock);
-
 	return 0;
 }
 
@@ -109,14 +102,13 @@ static int imx_rpmsg_insert_workqueue(struct snd_pcm_substream *substream,
 				      struct rpmsg_msg *msg,
 				      struct rpmsg_info *info)
 {
-	unsigned long flags;
 	int ret = 0;
 
 	/*
 	 * Queue the work to workqueue.
 	 * If the queue is full, drop the message.
 	 */
-	spin_lock_irqsave(&info->wq_lock, flags);
+	guard(spinlock_irqsave)(&info->wq_lock);
 	if (info->work_write_index != info->work_read_index) {
 		int index = info->work_write_index;
 
@@ -130,7 +122,6 @@ static int imx_rpmsg_insert_workqueue(struct snd_pcm_substream *substream,
 		info->msg_drop_count[substream->stream]++;
 		ret = -EPIPE;
 	}
-	spin_unlock_irqrestore(&info->wq_lock, flags);
 
 	return ret;
 }
@@ -523,7 +514,6 @@ static int imx_rpmsg_pcm_ack(struct snd_soc_component *component,
 	snd_pcm_sframes_t avail;
 	struct timer_list *timer;
 	struct rpmsg_msg *msg;
-	unsigned long flags;
 	int buffer_tail = 0;
 	int written_num;
 
@@ -553,11 +543,11 @@ static int imx_rpmsg_pcm_ack(struct snd_soc_component *component,
 		msg->s_msg.param.buffer_tail = buffer_tail;
 
 		/* The notification message is updated to latest */
-		spin_lock_irqsave(&info->lock[substream->stream], flags);
-		memcpy(&info->notify[substream->stream], msg,
-		       sizeof(struct rpmsg_s_msg));
-		info->notify_updated[substream->stream] = true;
-		spin_unlock_irqrestore(&info->lock[substream->stream], flags);
+		scoped_guard(spinlock_irqsave, &info->lock[substream->stream]) {
+			memcpy(&info->notify[substream->stream], msg,
+			       sizeof(struct rpmsg_s_msg));
+			info->notify_updated[substream->stream] = true;
+		}
 
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 			avail = snd_pcm_playback_hw_avail(runtime);
@@ -640,7 +630,7 @@ static void imx_rpmsg_pcm_work(struct work_struct *work)
 	bool is_notification = false;
 	struct rpmsg_info *info;
 	struct rpmsg_msg msg;
-	unsigned long flags;
+	bool updated;
 
 	work_of_rpmsg = container_of(work, struct work_of_rpmsg, work);
 	info = work_of_rpmsg->info;
@@ -651,25 +641,26 @@ static void imx_rpmsg_pcm_work(struct work_struct *work)
 	 * enough data in M core side, need to let M core know
 	 * data is updated immediately.
 	 */
-	spin_lock_irqsave(&info->lock[TX], flags);
-	if (info->notify_updated[TX]) {
-		memcpy(&msg, &info->notify[TX], sizeof(struct rpmsg_s_msg));
-		info->notify_updated[TX] = false;
-		spin_unlock_irqrestore(&info->lock[TX], flags);
-		info->send_message(&msg, info);
-	} else {
-		spin_unlock_irqrestore(&info->lock[TX], flags);
+	scoped_guard(spinlock_irqsave, &info->lock[TX]) {
+		updated = info->notify_updated[TX];
+		if (updated) {
+			memcpy(&msg, &info->notify[TX], sizeof(struct rpmsg_s_msg));
+			info->notify_updated[TX] = false;
+		}
 	}
-
-	spin_lock_irqsave(&info->lock[RX], flags);
-	if (info->notify_updated[RX]) {
-		memcpy(&msg, &info->notify[RX], sizeof(struct rpmsg_s_msg));
-		info->notify_updated[RX] = false;
-		spin_unlock_irqrestore(&info->lock[RX], flags);
+	if (updated)
 		info->send_message(&msg, info);
-	} else {
-		spin_unlock_irqrestore(&info->lock[RX], flags);
+
+	scoped_guard(spinlock_irqsave, &info->lock[RX]) {
+		updated = info->notify_updated[RX];
+		if (updated) {
+			memcpy(&msg, &info->notify[RX], sizeof(struct rpmsg_s_msg));
+			info->notify_updated[RX] = false;
+		}
 	}
+	if (updated)
+		info->send_message(&msg, info);
+
 
 	/* Skip the notification message for it has been processed above */
 	if (work_of_rpmsg->msg.s_msg.header.type == MSG_TYPE_C &&
@@ -681,10 +672,10 @@ static void imx_rpmsg_pcm_work(struct work_struct *work)
 		info->send_message(&work_of_rpmsg->msg, info);
 
 	/* update read index */
-	spin_lock_irqsave(&info->wq_lock, flags);
-	info->work_read_index++;
-	info->work_read_index %= WORK_MAX_NUM;
-	spin_unlock_irqrestore(&info->wq_lock, flags);
+	scoped_guard(spinlock_irqsave, &info->wq_lock) {
+		info->work_read_index++;
+		info->work_read_index %= WORK_MAX_NUM;
+	}
 }
 
 static int imx_rpmsg_pcm_probe(struct platform_device *pdev)
-- 
2.43.0

[PATCH 10/11] ASoC: fsl: mpc5200_dma: Use guard() for spin locks

[phucduc.bui]

From: bui duc phuc <phucduc.bui@gmail.com>

Clean up the code using guard() for spin locks.
Merely code refactoring, and no behavior change.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/fsl/mpc5200_dma.c | 56 ++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 28 deletions(-)

diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index 56e2cf2f727b..bfedb2dea0b3 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -77,18 +77,20 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
 {
 	struct psc_dma_stream *s = _psc_dma_stream;
 
-	spin_lock(&s->psc_dma->lock);
-	/* For each finished period, dequeue the completed period buffer
-	 * and enqueue a new one in it's place. */
-	while (bcom_buffer_done(s->bcom_task)) {
-		bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
+	scoped_guard(spinlock, &s->psc_dma->lock) {
+		/*
+		 * For each finished period, dequeue the completed period buffer
+		 * and enqueue a new one in its place
+		 */
+		while (bcom_buffer_done(s->bcom_task)) {
+			bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
 
-		s->period_current = (s->period_current+1) % s->runtime->periods;
-		s->period_count++;
+			s->period_current = (s->period_current+1) % s->runtime->periods;
+			s->period_count++;
 
-		psc_dma_bcom_enqueue_next_buffer(s);
+			psc_dma_bcom_enqueue_next_buffer(s);
+		}
 	}
-	spin_unlock(&s->psc_dma->lock);
 
 	/* If the stream is active, then also inform the PCM middle layer
 	 * of the period finished event. */
@@ -116,7 +118,6 @@ static int psc_dma_trigger(struct snd_soc_component *component,
 	struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
 	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
 	u16 imr;
-	unsigned long flags;
 	int i;
 
 	switch (cmd) {
@@ -135,19 +136,18 @@ static int psc_dma_trigger(struct snd_soc_component *component,
 		/* Fill up the bestcomm bd queue and enable DMA.
 		 * This will begin filling the PSC's fifo.
 		 */
-		spin_lock_irqsave(&psc_dma->lock, flags);
-
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-			bcom_gen_bd_rx_reset(s->bcom_task);
-		else
-			bcom_gen_bd_tx_reset(s->bcom_task);
+		scoped_guard(spinlock_irqsave, &psc_dma->lock) {
+			if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+				bcom_gen_bd_rx_reset(s->bcom_task);
+			else
+				bcom_gen_bd_tx_reset(s->bcom_task);
 
-		for (i = 0; i < runtime->periods; i++)
-			if (!bcom_queue_full(s->bcom_task))
-				psc_dma_bcom_enqueue_next_buffer(s);
+			for (i = 0; i < runtime->periods; i++)
+				if (!bcom_queue_full(s->bcom_task))
+					psc_dma_bcom_enqueue_next_buffer(s);
 
-		bcom_enable(s->bcom_task);
-		spin_unlock_irqrestore(&psc_dma->lock, flags);
+			bcom_enable(s->bcom_task);
+		}
 
 		out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
 
@@ -158,13 +158,13 @@ static int psc_dma_trigger(struct snd_soc_component *component,
 			substream->pstr->stream, s->period_count);
 		s->active = 0;
 
-		spin_lock_irqsave(&psc_dma->lock, flags);
-		bcom_disable(s->bcom_task);
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-			bcom_gen_bd_rx_reset(s->bcom_task);
-		else
-			bcom_gen_bd_tx_reset(s->bcom_task);
-		spin_unlock_irqrestore(&psc_dma->lock, flags);
+		scoped_guard(spinlock_irqsave, &psc_dma->lock) {
+			bcom_disable(s->bcom_task);
+			if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+				bcom_gen_bd_rx_reset(s->bcom_task);
+			else
+				bcom_gen_bd_tx_reset(s->bcom_task);
+		}
 
 		break;
 
-- 
2.43.0

[PATCH 11/11] ASoC: fsl: mpc5200_psc_ac97: Use guard() for mutex locks

[phucduc.bui]

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/fsl/mpc5200_psc_ac97.c | 34 +++++++++++---------------------
 1 file changed, 12 insertions(+), 22 deletions(-)

diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index 8554fb690772..80666da923d0 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -31,14 +31,13 @@ static unsigned short psc_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
 	int status;
 	unsigned int val;
 
-	mutex_lock(&psc_dma->mutex);
+	guard(mutex)(&psc_dma->mutex);
 
 	/* Wait for command send status zero = ready */
 	status = spin_event_timeout(!(in_be16(&psc_dma->psc_regs->sr_csr.status) &
 				MPC52xx_PSC_SR_CMDSEND), 100, 0);
 	if (status == 0) {
 		pr_err("timeout on ac97 bus (rdy)\n");
-		mutex_unlock(&psc_dma->mutex);
 		return -ENODEV;
 	}
 
@@ -54,19 +53,16 @@ static unsigned short psc_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
 	if (status == 0) {
 		pr_err("timeout on ac97 read (val) %x\n",
 				in_be16(&psc_dma->psc_regs->sr_csr.status));
-		mutex_unlock(&psc_dma->mutex);
 		return -ENODEV;
 	}
 	/* Get the data */
 	val = in_be32(&psc_dma->psc_regs->ac97_data);
 	if (((val >> 24) & 0x7f) != reg) {
 		pr_err("reg echo error on ac97 read\n");
-		mutex_unlock(&psc_dma->mutex);
 		return -ENODEV;
 	}
 	val = (val >> 8) & 0xffff;
 
-	mutex_unlock(&psc_dma->mutex);
 	return (unsigned short) val;
 }
 
@@ -75,52 +71,46 @@ static void psc_ac97_write(struct snd_ac97 *ac97,
 {
 	int status;
 
-	mutex_lock(&psc_dma->mutex);
+	guard(mutex)(&psc_dma->mutex);
 
 	/* Wait for command status zero = ready */
 	status = spin_event_timeout(!(in_be16(&psc_dma->psc_regs->sr_csr.status) &
 				MPC52xx_PSC_SR_CMDSEND), 100, 0);
 	if (status == 0) {
 		pr_err("timeout on ac97 bus (write)\n");
-		goto out;
+		return;
 	}
 	/* Write data */
 	out_be32(&psc_dma->psc_regs->ac97_cmd,
 			((reg & 0x7f) << 24) | (val << 8));
-
- out:
-	mutex_unlock(&psc_dma->mutex);
 }
 
 static void psc_ac97_warm_reset(struct snd_ac97 *ac97)
 {
 	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
 
-	mutex_lock(&psc_dma->mutex);
+	guard(mutex)(&psc_dma->mutex);
 
 	out_be32(&regs->sicr, psc_dma->sicr | MPC52xx_PSC_SICR_AWR);
 	udelay(3);
 	out_be32(&regs->sicr, psc_dma->sicr);
-
-	mutex_unlock(&psc_dma->mutex);
 }
 
 static void psc_ac97_cold_reset(struct snd_ac97 *ac97)
 {
 	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
 
-	mutex_lock(&psc_dma->mutex);
-	dev_dbg(psc_dma->dev, "cold reset\n");
+	scoped_guard(mutex_lock, &psc_dma->mutex) {
+		dev_dbg(psc_dma->dev, "cold reset\n");
 
-	mpc5200_psc_ac97_gpio_reset(psc_dma->id);
+		mpc5200_psc_ac97_gpio_reset(psc_dma->id);
 
-	/* Notify the PSC that a reset has occurred */
-	out_be32(&regs->sicr, psc_dma->sicr | MPC52xx_PSC_SICR_ACRB);
+		/* Notify the PSC that a reset has occurred */
+		out_be32(&regs->sicr, psc_dma->sicr | MPC52xx_PSC_SICR_ACRB);
 
-	/* Re-enable RX and TX */
-	out_8(&regs->command, MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
-
-	mutex_unlock(&psc_dma->mutex);
+		/* Re-enable RX and TX */
+		out_8(&regs->command, MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
+	}
 
 	usleep_range(1000, 2000);
 	psc_ac97_warm_reset(ac97);
-- 
2.43.0

Re: [PATCH 11/11] ASoC: fsl: mpc5200_psc_ac97: Use guard() for mutex locks

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 230 bytes --]

On Fri, Jun 12, 2026 at 08:26:39PM +0700, phucduc.bui@gmail.com wrote:

> -	dev_dbg(psc_dma->dev, "cold reset\n");
> +	scoped_guard(mutex_lock, &psc_dma->mutex) {
> +		dev_dbg(psc_dma->dev, "cold reset\n");

mutex_lock not mutex?

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