From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 29 Aug 2025 14:52:56 +0000 (+0200)
Subject: ALSA: wss: Use guard() for mutex locks
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=372b43467aecd97b7c9435b51987a5e958b7d7e2;p=users%2Fhch%2Fmisc.git

ALSA: wss: 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/20250829145300.5460-17-tiwai@suse.de
---

diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
index 1b6a80021d18..0a2c040af5f0 100644
--- a/sound/isa/wss/wss_lib.c
+++ b/sound/isa/wss/wss_lib.c
@@ -618,7 +618,7 @@ static void snd_wss_playback_format(struct snd_wss *chip,
 	unsigned long flags;
 	int full_calib = 1;
 
-	mutex_lock(&chip->mce_mutex);
+	guard(mutex)(&chip->mce_mutex);
 	if (chip->hardware == WSS_HW_CS4231A ||
 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
 		spin_lock_irqsave(&chip->reg_lock, flags);
@@ -669,7 +669,6 @@ static void snd_wss_playback_format(struct snd_wss *chip,
 			udelay(100);	/* this seems to help */
 		snd_wss_mce_down(chip);
 	}
-	mutex_unlock(&chip->mce_mutex);
 }
 
 static void snd_wss_capture_format(struct snd_wss *chip,
@@ -679,7 +678,7 @@ static void snd_wss_capture_format(struct snd_wss *chip,
 	unsigned long flags;
 	int full_calib = 1;
 
-	mutex_lock(&chip->mce_mutex);
+	guard(mutex)(&chip->mce_mutex);
 	if (chip->hardware == WSS_HW_CS4231A ||
 	    (chip->hardware & WSS_HW_CS4232_MASK)) {
 		spin_lock_irqsave(&chip->reg_lock, flags);
@@ -736,7 +735,6 @@ static void snd_wss_capture_format(struct snd_wss *chip,
 		spin_unlock_irqrestore(&chip->reg_lock, flags);
 		snd_wss_mce_down(chip);
 	}
-	mutex_unlock(&chip->mce_mutex);
 }
 
 /*
@@ -862,15 +860,12 @@ static int snd_wss_open(struct snd_wss *chip, unsigned int mode)
 {
 	unsigned long flags;
 
-	mutex_lock(&chip->open_mutex);
+	guard(mutex)(&chip->open_mutex);
 	if ((chip->mode & mode) ||
-	    ((chip->mode & WSS_MODE_OPEN) && chip->single_dma)) {
-		mutex_unlock(&chip->open_mutex);
+	    ((chip->mode & WSS_MODE_OPEN) && chip->single_dma))
 		return -EAGAIN;
-	}
 	if (chip->mode & WSS_MODE_OPEN) {
 		chip->mode |= mode;
-		mutex_unlock(&chip->open_mutex);
 		return 0;
 	}
 	/* ok. now enable and ack CODEC IRQ */
@@ -896,7 +891,6 @@ static int snd_wss_open(struct snd_wss *chip, unsigned int mode)
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
 
 	chip->mode = mode;
-	mutex_unlock(&chip->open_mutex);
 	return 0;
 }
 
@@ -904,12 +898,10 @@ static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
 {
 	unsigned long flags;
 
-	mutex_lock(&chip->open_mutex);
+	guard(mutex)(&chip->open_mutex);
 	chip->mode &= ~mode;
-	if (chip->mode & WSS_MODE_OPEN) {
-		mutex_unlock(&chip->open_mutex);
+	if (chip->mode & WSS_MODE_OPEN)
 		return;
-	}
 	/* disable IRQ */
 	spin_lock_irqsave(&chip->reg_lock, flags);
 	if (!(chip->hardware & WSS_HW_AD1848_MASK))
@@ -943,7 +935,6 @@ static void snd_wss_close(struct snd_wss *chip, unsigned int mode)
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
 
 	chip->mode = 0;
-	mutex_unlock(&chip->open_mutex);
 }
 
 /*