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media: uvcvideo: Avoid returning invalid controls 

If the memory where ctrl_found is placed has the value of uvc_ctrl and
__uvc_find_control does not find the control we will return an invalid
index.

Fixes: 6350d6a4ed ("media: uvcvideo: Set error_idx during ctrl_commit errors")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Ricardo Ribalda 2021-12-01 06:22:18 +01:00 committed by Mauro Carvalho Chehab
parent f0577b1b63
commit 414d3b49d9
1 changed files with 1 additions and 1 deletions
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2
drivers/media/usb/uvc/uvc_ctrl.c
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@ -1639,7 +1639,7 @@ static int uvc_ctrl_find_ctrl_idx(struct uvc_entity *entity,
struct uvc_control *uvc_control)
{
struct uvc_control_mapping *mapping = NULL;
struct uvc_control *ctrl_found;
struct uvc_control *ctrl_found = NULL;
unsigned int i;
if (!entity)