[alsa-devel] [PATCH] ASoC: wm8731: init mutex in i2c init path

The I2C init path forgot to init the mutex, leading to an oops when controls are accessed.

Signed-off-by: Manuel Lauss manuel.lauss@gmail.com --- Fixes an oops on bootup when alsactl tries to restore codec parameters on my MIPS DB1300 board.

sound/soc/codecs/wm8731.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c index b9211b4..b115ed8 100644 --- a/sound/soc/codecs/wm8731.c +++ b/sound/soc/codecs/wm8731.c @@ -717,6 +717,8 @@ static int wm8731_i2c_probe(struct i2c_client *i2c, if (wm8731 == NULL) return -ENOMEM;

+ mutex_init(&wm8731->lock); + wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); if (IS_ERR(wm8731->regmap)) { ret = PTR_ERR(wm8731->regmap);