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ALSA: misc: Use guard() for spin locks 

Clean up the code using guard() for spin locks.

Merely code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250829151335.7342-20-tiwai@suse.de
pull/476/head
Takashi Iwai 2025-08-29 17:13:33 +02:00
parent 69f374931f
commit b8e1684163
1 changed files with 10 additions and 15 deletions
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25
sound/core/misc.c
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@ -127,35 +127,30 @@ int snd_fasync_helper(int fd, struct file *file, int on,
INIT_LIST_HEAD(&fasync->list);
}
spin_lock_irq(&snd_fasync_lock);
if (*fasyncp) {
kfree(fasync);
fasync = *fasyncp;
} else {
if (!fasync) {
spin_unlock_irq(&snd_fasync_lock);
return 0;
scoped_guard(spinlock_irq, &snd_fasync_lock) {
if (*fasyncp) {
kfree(fasync);
fasync = *fasyncp;
} else {
if (!fasync)
return 0;
*fasyncp = fasync;
}
*fasyncp = fasync;
fasync->on = on;
}
fasync->on = on;
spin_unlock_irq(&snd_fasync_lock);
return fasync_helper(fd, file, on, &fasync->fasync);
}
EXPORT_SYMBOL_GPL(snd_fasync_helper);
void snd_kill_fasync(struct snd_fasync *fasync, int signal, int poll)
{
unsigned long flags;
if (!fasync || !fasync->on)
return;
spin_lock_irqsave(&snd_fasync_lock, flags);
guard(spinlock_irqsave)(&snd_fasync_lock);
fasync->signal = signal;
fasync->poll = poll;
list_move(&fasync->list, &snd_fasync_list);
schedule_work(&snd_fasync_work);
spin_unlock_irqrestore(&snd_fasync_lock, flags);
}
EXPORT_SYMBOL_GPL(snd_kill_fasync);