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[media] uvcvideo: Fix ENUMINPUT handling 

Properly validate the user-supplied index against the number of inputs.
The code used the pin local variable instead of the index by mistake.

Reported-by: Jozef Vesely <vesely@gjh.sk>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-03-21 09:50:36 -03:00 committed by Mauro Carvalho Chehab
parent aeebb1b314
commit 31c5f0c5e2
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/uvc/uvc_v4l2.c
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@ -694,7 +694,7 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
break;
}
pin = iterm->id;
} else if (pin < selector->bNrInPins) {
} else if (index < selector->bNrInPins) {
pin = selector->baSourceID[index];
list_for_each_entry(iterm, &chain->entities, chain) {
if (!UVC_ENTITY_IS_ITERM(iterm))