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ASoC: Fix soc-cache buffer overflow bug 

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

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos 2010-09-21 15:03:26 +01:00 committed by Mark Brown
parent cbfa5184cc
commit d47372e852
1 changed files with 3 additions and 2 deletions
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5
sound/soc/soc-cache.c
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@ -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;