On 03/23/2014 04:32 PM, Laurent Pinchart wrote:
> The vb2 queue timestamp_flags field must be set by drivers, as enforced
> by a WARN_ON in vb2_queue_init. The UVC gadget driver failed to do so.
> This resulted in the following warning.
>
> [ 2.104371] g_webcam gadget: uvc_function_bind
> [ 2.105567] ------------[ cut here ]------------
> [ 2.105567] ------------[ cut here ]------------
> [ 2.106779] WARNING: CPU: 0 PID: 1 at
> drivers/media/v4l2-core/videobuf2-core.c:2207 vb2_queue_init+0xa3/0x113()
>
> Fix it.
>
> Reported-by: Fengguang Wu <fengguang...@intel.com>
> Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Reviewed-by: Hans Verkuil <hans.verk...@cisco.com>
Regards,
Hans
> ---
> drivers/usb/gadget/uvc_queue.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c
> index d4561ba..4611e9c 100644
> --- a/drivers/usb/gadget/uvc_queue.c
> +++ b/drivers/usb/gadget/uvc_queue.c
> @@ -136,6 +136,8 @@ static int uvc_queue_init(struct uvc_video_queue *queue,
> queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
> queue->queue.ops = &uvc_queue_qops;
> queue->queue.mem_ops = &vb2_vmalloc_memops;
> + queue->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC
> + | V4L2_BUF_FLAG_TSTAMP_SRC_EOF;
> ret = vb2_queue_init(&queue->queue);
> if (ret)
> return ret;
>
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