Commit fa6d5293 authored by Dimitris Papastamos's avatar Dimitris Papastamos Committed by Mark Brown

ASoC: Fix soc-cache buffer overflow bug

Make sure we stay within the cache boundaries when updating the
register cache.
Signed-off-by: default avatarDimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0b25ad05
......@@ -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;
......
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