diff options
Diffstat (limited to 'sound/soc/soc-cache.c')
| -rw-r--r-- | sound/soc/soc-cache.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index cad70c9640d..9a88a276a0a 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -610,7 +610,7 @@ static int snd_soc_rbtree_cache_sync(struct snd_soc_codec *codec) struct rb_node *node; struct snd_soc_rbtree_node *rbnode; unsigned int regtmp; - unsigned int val; + unsigned int val, def; int ret; int i; @@ -622,6 +622,11 @@ static int snd_soc_rbtree_cache_sync(struct snd_soc_codec *codec) WARN_ON(codec->writable_register && codec->writable_register(codec, regtmp)); val = snd_soc_rbtree_get_register(rbnode, i); + def = snd_soc_get_cache_val(codec->reg_def_copy, i, + rbnode->word_size); + if (val == def) + continue; + codec->cache_bypass = 1; ret = snd_soc_write(codec, regtmp, val); codec->cache_bypass = 0; |