linux-kernel - [PATCH -next] ALSA: bebob: Fix missing unlock on error in special_clk_ctl

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Date:	Sun, 20 Jul 2014 12:50:35 +0800
From:	weiyj_lk@....com
To:	Clemens Ladisch <clemens@...isch.de>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Takashi Sakamoto <o-takashi@...amocchi.jp>
Cc:	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH -next] ALSA: bebob: Fix missing unlock on error in special_clk_ctl_put()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Add the missing unlock before return from function special_clk_ctl_put()
in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 sound/firewire/bebob/bebob_maudio.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c
index 6af50eb..6748515 100644
--- a/sound/firewire/bebob/bebob_maudio.c
+++ b/sound/firewire/bebob/bebob_maudio.c
@@ -382,8 +382,10 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl,
 	mutex_lock(&bebob->mutex);
 
 	id = uval->value.enumerated.item[0];
-	if (id >= ARRAY_SIZE(special_clk_labels))
+	if (id >= ARRAY_SIZE(special_clk_labels)) {
+		mutex_unlock(&bebob->mutex);
 		return 0;
+	}
 
 	err = avc_maudio_set_special_clk(bebob, id,
 					 params->dig_in_fmt,

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