ASoC: rt286: Fix run time error while modifying const data

Make a copy of memory for index_cache rather than directly use the
rt286_index_def to avoid run time error.

Fixes: c418a84a8c8f ("ASoC: Constify reg_default tables")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
index bd9365885f73f508fa88de0908215473efaaddb3..2088dfa0612d6e2282eb6e9bbb8be2eefc8692ef 100644 (file)
--- a/sound/soc/codecs/rt286.c
+++ b/sound/soc/codecs/rt286.c
@@ -38,7 +38,7 @@
 #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;
@@ -1161,7 +1161,11 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
                return -ENODEV;
        }
 
-       rt286->index_cache = rt286_index_def;
+       rt286->index_cache = devm_kmemdup(&i2c->dev, rt286_index_def,
+                                         sizeof(rt286_index_def), GFP_KERNEL);
+       if (!rt286->index_cache)
+               return -ENOMEM;
+
        rt286->index_cache_size = INDEX_CACHE_SIZE;
        rt286->i2c = i2c;
        i2c_set_clientdata(i2c, rt286);