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ASoC: Enforce the mask in snd_soc_update_bits()

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Avoids issues if someone does a read followed by restore and doesn't mask
out only the bits being updated.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2011-06-03 17:09:14 +01:00
parent 51b3b5cabb
commit 78bf3c9ab6
1 changed files with 1 additions and 1 deletions
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2
sound/soc/soc-core.c
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@ -2323,7 +2323,7 @@ int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
return ret;
old = ret;
new = (old & ~mask) | value;
new = (old & ~mask) | (value & mask);
change = old != new;
if (change) {
ret = snd_soc_write(codec, reg, new);