Hi Dan, Thank you for the patch. On Wednesday 21 March 2012 09:35:23 Dan Carpenter wrote: > copy_in_user() already checks for write permission, so we don't need to > do it here. This was added in 1a5e4c867c "[media] uvcvideo: Implement > compat_ioctl32 for custom ioctls". > > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> And applied to my tree. > diff --git a/drivers/media/video/uvc/uvc_v4l2.c > b/drivers/media/video/uvc/uvc_v4l2.c index ff2cddd..111bfff 100644 > --- a/drivers/media/video/uvc/uvc_v4l2.c > +++ b/drivers/media/video/uvc/uvc_v4l2.c > @@ -1105,8 +1105,6 @@ static int uvc_v4l2_put_xu_mapping(const struct > uvc_xu_control_mapping *kp, if (get_user(p, &up->menu_info)) > return -EFAULT; > umenus = compat_ptr(p); > - if (!access_ok(VERIFY_WRITE, umenus, kp->menu_count * sizeof(*umenus))) > - return -EFAULT; > > if (copy_in_user(umenus, kmenus, kp->menu_count * sizeof(*umenus))) > return -EFAULT; -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
