[PATCH 17/25] ALSA: hda/analog: Use guard() for mutex locks

[Takashi Iwai <tiwai@suse.de>]

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

Only code refactoring, and no behavior change.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/hda/codecs/analog.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/hda/codecs/analog.c b/sound/hda/codecs/analog.c
index 33aaeb44c4dc..357ad5a6c0db 100644
--- a/sound/hda/codecs/analog.c
+++ b/sound/hda/codecs/analog.c
@@ -727,7 +727,7 @@ static int ad1988_auto_smux_enum_put(struct snd_kcontrol *kcontrol,
 	if (spec->cur_smux == val)
 		return 0;
 
-	mutex_lock(&codec->control_mutex);
+	guard(mutex)(&codec->control_mutex);
 	path = snd_hda_get_path_from_idx(codec,
 					 spec->smux_paths[spec->cur_smux]);
 	if (path)
@@ -736,7 +736,6 @@ static int ad1988_auto_smux_enum_put(struct snd_kcontrol *kcontrol,
 	if (path)
 		snd_hda_activate_path(codec, path, true, true);
 	spec->cur_smux = val;
-	mutex_unlock(&codec->control_mutex);
 	return 1;
 }
 
-- 
2.50.1