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kernel
os
linux
ALSA: opl3: 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/20250829150026.6379-4-tiwai@suse.de
+7
-9
+7
-9
sound/drivers/opl3/opl3_seq.c
+7
-9
sound/drivers/opl3/opl3_seq.c
···
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int idx;
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struct snd_hwdep *hwdep = opl3->hwdep;
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-
mutex_lock(&hwdep->open_mutex);
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-
if (hwdep->used) {
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-
mutex_unlock(&hwdep->open_mutex);
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-
return -EBUSY;
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+
scoped_guard(mutex, &hwdep->open_mutex) {
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+
if (hwdep->used)
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+
return -EBUSY;
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+
hwdep->used++;
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}
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-
hwdep->used++;
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-
mutex_unlock(&hwdep->open_mutex);
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snd_opl3_reset(opl3);
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50
···
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snd_opl3_reset(opl3);
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hwdep = opl3->hwdep;
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-
mutex_lock(&hwdep->open_mutex);
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-
hwdep->used--;
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-
mutex_unlock(&hwdep->open_mutex);
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+
scoped_guard(mutex, &hwdep->open_mutex) {
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+
hwdep->used--;
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+
}
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wake_up(&hwdep->open_wait);
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}
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