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ASoC: cs42l73: don't use negative array index

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If cs42l73_get_mclkx_coeff() returns < 0 (which it can) in
sound/soc/codecs/cs42l73.c::cs42l73_set_mclk(), then we'll be using
the (negative) return value as array index on the very next line of
code - that's bad.

Catch the negative return value and propagate it to the caller (which
checks for it) and things are a bit more sane :-)

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jesper Juhl 2012-04-12 21:54:34 +02:00 committed by Mark Brown
parent 7e1f7c8a6e
commit 86fc499823
1 changed files with 2 additions and 0 deletions
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2
sound/soc/codecs/cs42l73.c
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@ -929,6 +929,8 @@ static int cs42l73_set_mclk(struct snd_soc_dai *dai, unsigned int freq)
/* MCLKX -> MCLK */
mclkx_coeff = cs42l73_get_mclkx_coeff(freq);
if (mclkx_coeff < 0)
return mclkx_coeff;
mclk = cs42l73_mclkx_coeffs[mclkx_coeff].mclkx /
cs42l73_mclkx_coeffs[mclkx_coeff].ratio;