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V4L/DVB: v4l: soc_camera: fix bound checking of mbus_fmt[] index

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When code <= V4L2_MBUS_FMT_FIXED soc_mbus_get_fmtdesc returns a pointer to
mbus_fmt[x], where x < 0. Fix this.

Signed-off-by: Baruch Siach <[email protected]>
Signed-off-by: Guennadi Liakhovetski <[email protected]>
CC: [email protected]
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Baruch Siach 2010-02-19 14:09:25 -03:00 • committed by Mauro Carvalho Chehab
commit 84f3751d6a
1 changed files with 2 additions and 1 deletions
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3
drivers/media/video/soc_mediabus.c
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@ -149,7 +149,8 @@ EXPORT_SYMBOL(soc_mbus_bytes_per_line);
const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
enum v4l2_mbus_pixelcode code)
{
if ((unsigned int)(code - V4L2_MBUS_FMT_FIXED) > ARRAY_SIZE(mbus_fmt))
if (code - V4L2_MBUS_FMT_FIXED > ARRAY_SIZE(mbus_fmt) ||
code <= V4L2_MBUS_FMT_FIXED)
return NULL;
return mbus_fmt + code - V4L2_MBUS_FMT_FIXED - 1;
}