Commit 9776e171 authored Feb 10, 2013 by Hans Verkuil Committed by Mauro Carvalho Chehab Mar 05, 2013

[media] stk-webcam: implement support for count == 0 when calling REQBUFS



The spec specifies that setting count to 0 in v4l2_requestbuffers
should result in releasing any streaming resources and the stream
ownership. Implement this.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

parent f81e372a

drivers/media/usb/stkwebcam/stk-webcam.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1046,6 +1046,13 @@ static int stk_vidioc_reqbufs(struct file *filp,
		if (is_streaming(dev)
		\|\| (dev->owner && dev->owner != filp))
		return -EBUSY;
		stk_free_buffers(dev);
		if (rb->count == 0) {
		stk_camera_write_reg(dev, 0x0, 0x49); /* turn off the LED */
		unset_initialised(dev);
		dev->owner = NULL;
		return 0;
		}
		dev->owner = filp;

		/FIXME If they ask for zero, we must stop streaming and free /