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>
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@ -203,8 +203,9 @@ static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg,
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data[1] = (value >> 8) & 0xff;
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data[2] = value & 0xff;
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if (!snd_soc_codec_volatile_register(codec, reg))
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reg_cache[reg] = value;
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if (!snd_soc_codec_volatile_register(codec, reg)
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&& reg < codec->driver->reg_cache_size)
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reg_cache[reg] = value;
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if (codec->cache_only) {
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codec->cache_sync = 1;
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