From 23ff6043add670713bbf2f6ee5d520459cfdfae9 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 4 Jun 2009 09:26:39 -0300 Subject: V4L/DVB (11945): uvcvideo: Don't accept to change the format when buffers are allocated. Setting a new frame format or size will likely change the buffer size required to store a complete video frame. To avoid a buffer overflow, don't allow VIDIOC_S_FMT calls when video buffers are already allocated. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_v4l2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/video/uvc/uvc_v4l2.c') diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 507542d..f8b94d6 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -251,7 +251,7 @@ static int uvc_v4l2_set_format(struct uvc_video_device *video, if (fmt->type != video->streaming->type) return -EINVAL; - if (uvc_queue_streaming(&video->queue)) + if (uvc_queue_allocated(&video->queue)) return -EBUSY; ret = uvc_v4l2_try_format(video, fmt, &probe, &format, &frame); -- cgit v1.1