[PATCH 20/25] ALSA: hda/realtek: Use auto cleanup for temporary buffers

[Takashi Iwai <tiwai@suse.de>]

The release of temporary kmalloced buffers can be nicely handled via
the standard __free(kfree).

Only code refactoring, and no behavior change.

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

diff --git a/sound/hda/codecs/realtek/realtek.c b/sound/hda/codecs/realtek/realtek.c
index 1d0f9d16e6c0..d9203d5756a0 100644
--- a/sound/hda/codecs/realtek/realtek.c
+++ b/sound/hda/codecs/realtek/realtek.c
@@ -237,7 +237,7 @@ void alc_update_knob_master(struct hda_codec *codec,
 {
 	unsigned int val;
 	struct snd_kcontrol *kctl;
-	struct snd_ctl_elem_value *uctl;
+	struct snd_ctl_elem_value *uctl __free(kfree) = NULL;
 
 	kctl = snd_hda_find_mixer_ctl(codec, "Master Playback Volume");
 	if (!kctl)
@@ -251,7 +251,6 @@ void alc_update_knob_master(struct hda_codec *codec,
 	uctl->value.integer.value[0] = val;
 	uctl->value.integer.value[1] = val;
 	kctl->put(kctl, uctl);
-	kfree(uctl);
 }
 EXPORT_SYMBOL_NS_GPL(alc_update_knob_master, "SND_HDA_CODEC_REALTEK");
 
-- 
2.50.1