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[PATCH] Fix sb_mixer use before validation

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dev should be validated before it is being used as index to array.

Coverity bug #871

Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Eugene Teo 2006-03-25 03:08:07 -08:00 committed by Linus Torvalds
parent 1f4d4a80fb
commit fe9bab2df9
1 changed files with 3 additions and 3 deletions
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6
sound/oss/sb_mixer.c
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@ -273,14 +273,14 @@ int sb_common_mixer_set(sb_devc * devc, int dev, int left, int right)
int regoffs;
unsigned char val;
if ((dev < 0) || (dev >= devc->iomap_sz))
return -EINVAL;
regoffs = (*devc->iomap)[dev][LEFT_CHN].regno;
if (regoffs == 0)
return -EINVAL;
if ((dev < 0) || (dev >= devc->iomap_sz))
return -EINVAL;
val = sb_getmixer(devc, regoffs);
change_bits(devc, &val, dev, LEFT_CHN, left);