Re: [PATCH v2 3/4] rcar-vin: Stop stream when subdevice signal EOS

[Hans Verkuil <hverkuil@xs4all.nl>]

On 15/01/2021 01:21, Niklas Söderlund wrote:
> When a subdevice signals end of stream stop the VIN in addition to
> informing user-space of the event.
> 
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> ---
>  drivers/media/platform/rcar-vin/rcar-v4l2.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> index 457a65bf6b664f05..176eae2dd5151ac9 100644
> --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c
> +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c
> @@ -969,9 +969,23 @@ void rvin_v4l2_unregister(struct rvin_dev *vin)
>  static void rvin_notify_video_device(struct rvin_dev *vin,
>  				     unsigned int notification, void *arg)
>  {
> +	const struct v4l2_event *event;
> +
>  	switch (notification) {
>  	case V4L2_DEVICE_NOTIFY_EVENT:
> -		v4l2_event_queue(&vin->vdev, arg);
> +		event = arg;
> +
> +		switch (event->type) {
> +		case V4L2_EVENT_EOS:
> +			rvin_stop_streaming(vin);
> +			v4l2_info(&vin->v4l2_dev,

Can you make this v4l2_dbg to avoid polluting the kernel log?

Regards,

	Hans

> +				  "Subdevice signaled end of stream, stopping.\n");
> +			break;
> +		default:
> +			break;
> +		}
> +
> +		v4l2_event_queue(&vin->vdev, event);
>  		break;
>  	default:
>  		break;
>