snd_soc_new_ac97_codec() and snd_soc_free_ac97_codec() are called from within a CODEC's probe() and remove() callbacks. Those will not run concurrently against each other for the same CODEC instance, hence it is not necessary to protect the two functions with a mutex.

This removes the last user in the ASoC core of the snd_soc_codec mutex field and will allow us to eventually remove it.

Signed-off-by: Lars-Peter Clausen lars@metafoo.de --- sound/soc/soc-core.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 889f4e3..5289984 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2107,13 +2107,9 @@ static struct platform_driver soc_driver = { int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, struct snd_ac97_bus_ops *ops, int num) { - mutex_lock(&codec->mutex); - codec->ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL); - if (codec->ac97 == NULL) { - mutex_unlock(&codec->mutex); + if (codec->ac97 == NULL) return -ENOMEM; - }

codec->ac97->bus = kzalloc(sizeof(struct snd_ac97_bus), GFP_KERNEL); if (codec->ac97->bus == NULL) { @@ -2132,7 +2128,6 @@ int snd_soc_new_ac97_codec(struct snd_soc_codec *codec, */ codec->ac97_created = 1;

- mutex_unlock(&codec->mutex); return 0; } EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); @@ -2302,7 +2297,6 @@ EXPORT_SYMBOL_GPL(snd_soc_set_ac97_ops_of_reset); */ void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) { - mutex_lock(&codec->mutex); #ifdef CONFIG_SND_SOC_AC97_BUS soc_unregister_ac97_codec(codec); #endif @@ -2310,7 +2304,6 @@ void snd_soc_free_ac97_codec(struct snd_soc_codec *codec) kfree(codec->ac97); codec->ac97 = NULL; codec->ac97_created = 0; - mutex_unlock(&codec->mutex); } EXPORT_SYMBOL_GPL(snd_soc_free_ac97_codec);