Make sure we stay within the cache boundaries when updating the register cache.

Signed-off-by: Dimitris Papastamos dp@opensource.wolfsonmicro.com --- sound/soc/soc-cache.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c index 1228111..28bf1ff 100644 --- a/sound/soc/soc-cache.c +++ b/sound/soc/soc-cache.c @@ -203,8 +203,9 @@ static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg, data[1] = (value >> 8) & 0xff; data[2] = value & 0xff;

- if (!snd_soc_codec_volatile_register(codec, reg)) - reg_cache[reg] = value; + if (!snd_soc_codec_volatile_register(codec, reg) + && reg < codec->driver->reg_cache_size) + reg_cache[reg] = value;

if (codec->cache_only) { codec->cache_sync = 1;