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authorLars-Peter Clausen <lars@metafoo.de>2014-11-09 17:01:01 +0100
committerMark Brown <broonie@kernel.org>2014-11-10 19:08:18 +0000
commit78660af7ba30e9d2cc9614465c8b65b3c85f49a9 (patch)
treeca45645d8a2fa9a3b8e3a3d851e831edd6c03361 /sound/soc/codecs/wm8903.c
parenta51ff30f45473a80f78b2572666473887e010d91 (diff)
ASoC: wm8903: Move the deemph lock to the driver level
The wm8903 uses the snd_soc_codec mutex to protect its deemph settings from concurrent access. This patch moves this lock to the driver level. This will allow us to eventually remove the snd_soc_codec mutex. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/wm8903.c')
-rw-r--r--sound/soc/codecs/wm8903.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index c038b3e04398..ffbe6df3453a 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -26,6 +26,7 @@
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/irq.h>
+#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
@@ -123,6 +124,7 @@ struct wm8903_priv {
int sysclk;
int irq;
+ struct mutex lock;
int fs;
int deemph;
@@ -457,7 +459,7 @@ static int wm8903_put_deemph(struct snd_kcontrol *kcontrol,
if (deemph > 1)
return -EINVAL;
- mutex_lock(&codec->mutex);
+ mutex_lock(&wm8903->lock);
if (wm8903->deemph != deemph) {
wm8903->deemph = deemph;
@@ -465,7 +467,7 @@ static int wm8903_put_deemph(struct snd_kcontrol *kcontrol,
ret = 1;
}
- mutex_unlock(&codec->mutex);
+ mutex_unlock(&wm8903->lock);
return ret;
}
@@ -2023,6 +2025,8 @@ static int wm8903_i2c_probe(struct i2c_client *i2c,
GFP_KERNEL);
if (wm8903 == NULL)
return -ENOMEM;
+
+ mutex_init(&wm8903->lock);
wm8903->dev = &i2c->dev;
wm8903->regmap = devm_regmap_init_i2c(i2c, &wm8903_regmap);