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| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2010-09-21 14:12:35 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-09-21 18:43:40 +0100 |
| commit | fa6d52938906305356555e37e38939c7bad8fd7a (patch) | |
| tree | d8a5b909d990697bd57e7f83bbe06b61d0b54f4a /sound/soc | |
| parent | 0b25ad0571e9208c2bd1302a41ce219794c6f901 (diff) | |
| download | linux-3.10-fa6d52938906305356555e37e38939c7bad8fd7a.tar.gz linux-3.10-fa6d52938906305356555e37e38939c7bad8fd7a.tar.bz2 linux-3.10-fa6d52938906305356555e37e38939c7bad8fd7a.zip | |
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>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | 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 12281111f10..28bf1ff980c 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; |