From 1781e78c63317c04e6ae6a076acfd53236f420bc Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 16 Jan 2015 13:03:28 +0100
Subject: ALSA: ak411x: Fix race of reinit() calls

Protect the call with a mutex, as this may be called in parallel
(either from the PCM rate change and the clock change).

Acked-by: Jaroslav Kysela <perex@perex.cz>
Tested-by: Pavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 include/sound/ak4113.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/sound/ak4113.h')

diff --git a/include/sound/ak4113.h b/include/sound/ak4113.h
index f4fbf6888e78..58c145620c3c 100644
--- a/include/sound/ak4113.h
+++ b/include/sound/ak4113.h
@@ -287,6 +287,7 @@ struct ak4113 {
 	ak4113_read_t *read;
 	void *private_data;
 	atomic_t wq_processing;
+	struct mutex reinit_mutex;
 	spinlock_t lock;
 	unsigned char regmap[AK4113_WRITABLE_REGS];
 	struct snd_kcontrol *kctls[AK4113_CONTROLS];
-- 
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