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ALSA: nm256: Use guard() for mutex locks

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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/20250829144342.4290-45-tiwai@suse.de
This commit is contained in:
Takashi Iwai
2025-08-29 16:43:19 +02:00
parent 23ab90a965
commit 6c56792a05
1 changed files with 2 additions and 5 deletions
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7
sound/pci/nm256/nm256.c
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@@ -446,27 +446,25 @@ snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s,
/* acquire interrupt */
static int snd_nm256_acquire_irq(struct nm256 *chip)
{
mutex_lock(&chip->irq_mutex);
guard(mutex)(&chip->irq_mutex);
if (chip->irq < 0) {
if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
dev_err(chip->card->dev,
"unable to grab IRQ %d\n", chip->pci->irq);
mutex_unlock(&chip->irq_mutex);
return -EBUSY;
}
chip->irq = chip->pci->irq;
chip->card->sync_irq = chip->irq;
}
chip->irq_acks++;
mutex_unlock(&chip->irq_mutex);
return 0;
}
/* release interrupt */
static void snd_nm256_release_irq(struct nm256 *chip)
{
mutex_lock(&chip->irq_mutex);
guard(mutex)(&chip->irq_mutex);
if (chip->irq_acks > 0)
chip->irq_acks--;
if (chip->irq_acks == 0 && chip->irq >= 0) {
@@ -474,7 +472,6 @@ static void snd_nm256_release_irq(struct nm256 *chip)
chip->irq = -1;
chip->card->sync_irq = -1;
}
mutex_unlock(&chip->irq_mutex);
}
/*