Hi Order, I just notice your patch on the ML: http://mailman.alsa-project.org/pipermail/alsa-devel/2015-October/098390.htm... I didn't subscribe the ML and I'm not in CC so I cannot directly reply to you.

I think you should make a copy of memory for index_cache rather than directly use the rt286_index_def if the index_cache is necessary.

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c index 1fbdb4f..210ab415 100644 --- a/sound/soc/codecs/rt286.c +++ b/sound/soc/codecs/rt286.c @@ -37,7 +37,7 @@ #define RT288_VENDOR_ID 0x10ec0288

struct rt286_priv { - const struct reg_default *index_cache; + struct reg_default *index_cache; int index_cache_size; struct regmap *regmap; struct snd_soc_codec *codec; @@ -1160,8 +1160,12 @@ static int rt286_i2c_probe(struct i2c_client *i2c, return -ENODEV; }

- rt286->index_cache = rt286_index_def; rt286->index_cache_size = INDEX_CACHE_SIZE; + rt286->index_cache = devm_kmalloc(&i2c->dev, INDEX_CACHE_SIZE, + GFP_KERNEL); + if (!rt286->index_cache) + return -ENOMEM; + rt286->i2c = i2c; i2c_set_clientdata(i2c, rt286);