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>

1 files changed, 1 insertions, 0 deletions

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];