[media] gspca: Fix underflow in vidioc_s_parm()
"n" is a user controlled integer. The code here doesn't handle the case
where "n" is negative and this causes a static checker warning.
drivers/media/usb/gspca/gspca.c:1571 vidioc_s_parm()
warn: no lower bound on 'n'
parm.capture.readbuffers is unsigned, so make n unsigned too, fixing this.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c
index 43d6505..e54cee8 100644
--- a/drivers/media/usb/gspca/gspca.c
+++ b/drivers/media/usb/gspca/gspca.c
@@ -1562,7 +1562,7 @@
struct v4l2_streamparm *parm)
{
struct gspca_dev *gspca_dev = video_drvdata(filp);
- int n;
+ unsigned int n;
n = parm->parm.capture.readbuffers;
if (n == 0 || n >= GSPCA_MAX_FRAMES)