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ASoC: cs42l51: Fix off-by-one for reg_cache_size 

Just checking the code in cs42l51_fill_cache():
The cache pointer points to codec->reg_cache + 1.
I think it is because CS42L51_FIRSTREG is 0x01,
so codec->reg_cache[0] is not used here.

Then we read CS42L51_NUMREGS bytes to cache.
So we need reg_cache_size to be CS42L51_NUMREGS + 1.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2011-11-23 12:46:11 +08:00 committed by Mark Brown
parent 4ca8af579c
commit b284362b6b
1 changed files with 1 additions and 1 deletions
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2
sound/soc/codecs/cs42l51.c
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@ -555,7 +555,7 @@ static int cs42l51_probe(struct snd_soc_codec *codec)
static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
.probe = cs42l51_probe,
.reg_cache_size = CS42L51_NUMREGS,
.reg_cache_size = CS42L51_NUMREGS + 1,
.reg_word_size = sizeof(u8),
};