diff options
Diffstat (limited to 'sound/soc/soc-cache.c')
| -rw-r--r-- | sound/soc/soc-cache.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 375dc6dfba4..00e70b6c7da 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -72,6 +72,9 @@ int snd_soc_cache_init(struct snd_soc_codec *codec) reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size; + if (!reg_size) + return 0; + mutex_init(&codec->cache_rw_mutex); dev_dbg(codec->dev, "ASoC: Initializing cache for %s codec\n", @@ -96,8 +99,7 @@ int snd_soc_cache_exit(struct snd_soc_codec *codec) { dev_dbg(codec->dev, "ASoC: Destroying cache for %s codec\n", codec->name); - if (!codec->reg_cache) - return 0; + kfree(codec->reg_cache); codec->reg_cache = NULL; return 0; @@ -117,8 +119,9 @@ int snd_soc_cache_read(struct snd_soc_codec *codec, return -EINVAL; mutex_lock(&codec->cache_rw_mutex); - *value = snd_soc_get_cache_val(codec->reg_cache, reg, - codec->driver->reg_word_size); + if (!ZERO_OR_NULL_PTR(codec->reg_cache)) + *value = snd_soc_get_cache_val(codec->reg_cache, reg, + codec->driver->reg_word_size); mutex_unlock(&codec->cache_rw_mutex); return 0; @@ -136,8 +139,9 @@ int snd_soc_cache_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int value) { mutex_lock(&codec->cache_rw_mutex); - snd_soc_set_cache_val(codec->reg_cache, reg, value, - codec->driver->reg_word_size); + if (!ZERO_OR_NULL_PTR(codec->reg_cache)) + snd_soc_set_cache_val(codec->reg_cache, reg, value, + codec->driver->reg_word_size); mutex_unlock(&codec->cache_rw_mutex); return 0; @@ -161,8 +165,6 @@ static int snd_soc_flat_cache_sync(struct snd_soc_codec *codec) i, codec_drv->reg_word_size) == val) continue; - WARN_ON(!snd_soc_codec_writable_register(codec, i)); - ret = snd_soc_write(codec, i, val); if (ret) return ret; |