From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 29 Aug 2025 14:42:45 +0000 (+0200)
Subject: ALSA: atiixp: Use guard() for mutex locks
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9608fe85ff21684c6c00f2658c2806dd4b2295f0;p=users%2Fhch%2Fmisc.git

ALSA: atiixp: Use guard() for mutex locks

Replace the manual mutex lock/unlock pairs with guard() for code
simplification.

Only code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250829144342.4290-11-tiwai@suse.de
---

diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 4f544950ee7b..38c07f3de850 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1073,9 +1073,8 @@ static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
 	struct atiixp *chip = snd_pcm_substream_chip(substream);
 	int err;
 
-	mutex_lock(&chip->open_mutex);
+	guard(mutex)(&chip->open_mutex);
 	err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
-	mutex_unlock(&chip->open_mutex);
 	if (err < 0)
 		return err;
 	substream->runtime->hw.channels_max = chip->max_channels;
@@ -1089,11 +1088,9 @@ static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
 {
 	struct atiixp *chip = snd_pcm_substream_chip(substream);
-	int err;
-	mutex_lock(&chip->open_mutex);
-	err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
-	mutex_unlock(&chip->open_mutex);
-	return err;
+
+	guard(mutex)(&chip->open_mutex);
+	return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
 }
 
 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)
@@ -1111,27 +1108,23 @@ static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
 static int snd_atiixp_spdif_open(struct snd_pcm_substream *substream)
 {
 	struct atiixp *chip = snd_pcm_substream_chip(substream);
-	int err;
-	mutex_lock(&chip->open_mutex);
+
+	guard(mutex)(&chip->open_mutex);
 	if (chip->spdif_over_aclink) /* share DMA_PLAYBACK */
-		err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
+		return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 2);
 	else
-		err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
-	mutex_unlock(&chip->open_mutex);
-	return err;
+		return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_SPDIF], -1);
 }
 
 static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
 {
 	struct atiixp *chip = snd_pcm_substream_chip(substream);
-	int err;
-	mutex_lock(&chip->open_mutex);
+
+	guard(mutex)(&chip->open_mutex);
 	if (chip->spdif_over_aclink)
-		err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
+		return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
 	else
-		err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
-	mutex_unlock(&chip->open_mutex);
-	return err;
+		return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_SPDIF]);
 }
 
 /* AC97 playback */
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index f7417c2bb477..81a53336699e 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -892,24 +892,17 @@ static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream,
 static int snd_atiixp_playback_open(struct snd_pcm_substream *substream)
 {
 	struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
-	int err;
 
-	mutex_lock(&chip->open_mutex);
-	err = snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
-	mutex_unlock(&chip->open_mutex);
-	if (err < 0)
-		return err;
-	return 0;
+	guard(mutex)(&chip->open_mutex);
+	return snd_atiixp_pcm_open(substream, &chip->dmas[ATI_DMA_PLAYBACK], 0);
 }
 
 static int snd_atiixp_playback_close(struct snd_pcm_substream *substream)
 {
 	struct atiixp_modem *chip = snd_pcm_substream_chip(substream);
-	int err;
-	mutex_lock(&chip->open_mutex);
-	err = snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
-	mutex_unlock(&chip->open_mutex);
-	return err;
+
+	guard(mutex)(&chip->open_mutex);
+	return snd_atiixp_pcm_close(substream, &chip->dmas[ATI_DMA_PLAYBACK]);
 }
 
 static int snd_atiixp_capture_open(struct snd_pcm_substream *substream)