Re: [PATCH v8 32/55] [media] media: use macros to check for V4L2 subdev entities

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Mauro,

Thank you for the patch.

On Sunday 30 August 2015 00:06:43 Mauro Carvalho Chehab wrote:
> Instead of relying on media subtype, use the new macros to detect
> if an entity is a subdev or an A/V DMA entity.
> 
> Please note that most drivers assume that there's just AV_DMA or
> V4L2 subdevs. This is not true anymore, as we've added MC support
> for DVB, and there are plans to add support for ALSA and FB/DRM
> too.
> 
> Ok, on the current pipelines supported by those drivers, just V4L
> stuff are there, but, assuming that some day a pipeline that also
> works with other subsystems will ever added, it is better to add
> explicit checks for the AV_DMA stuff.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
> 
> diff --git a/drivers/media/platform/exynos4-is/common.c
> b/drivers/media/platform/exynos4-is/common.c index
> 0eb34ecb8ee4..8c9a29e0e294 100644
> --- a/drivers/media/platform/exynos4-is/common.c
> +++ b/drivers/media/platform/exynos4-is/common.c
> @@ -22,8 +22,7 @@ struct v4l2_subdev *fimc_find_remote_sensor(struct
> media_entity *entity) while (pad->flags & MEDIA_PAD_FL_SINK) {
>  		/* source pad */
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		sd = media_entity_to_v4l2_subdev(pad->entity);
> diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c
> b/drivers/media/platform/exynos4-is/fimc-capture.c index
> 0627a93b2f3b..e9810fee4c30 100644
> --- a/drivers/media/platform/exynos4-is/fimc-capture.c
> +++ b/drivers/media/platform/exynos4-is/fimc-capture.c
> @@ -1141,8 +1141,7 @@ static int fimc_pipeline_validate(struct fimc_dev
> *fimc) }
>  		}
> 
> -		if (src_pad == NULL ||
> -		    media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity))
>  			break;
> 
>  		/* Don't call FIMC subdev operation to avoid nested locking */
> @@ -1397,7 +1396,7 @@ static int fimc_link_setup(struct media_entity
> *entity, struct fimc_vid_cap *vc = &fimc->vid_cap;
>  	struct v4l2_subdev *sensor;
> 
> -	if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!is_media_entity_v4l2_subdev(remote->entity))
>  		return -EINVAL;
> 
>  	if (WARN_ON(fimc == NULL))
> diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c
> b/drivers/media/platform/exynos4-is/fimc-isp-video.c index
> 3d9ccbf5f10f..5fbaf5e39903 100644
> --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c
> +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c
> @@ -467,8 +467,7 @@ static int isp_video_pipeline_validate(struct fimc_isp
> *isp)
> 
>  		/* Retrieve format at the source pad */
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		sd = media_entity_to_v4l2_subdev(pad->entity);
> diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c
> b/drivers/media/platform/exynos4-is/fimc-lite.c index
> b2607da4ad14..c2327147b360 100644
> --- a/drivers/media/platform/exynos4-is/fimc-lite.c
> +++ b/drivers/media/platform/exynos4-is/fimc-lite.c
> @@ -814,8 +814,7 @@ static int fimc_pipeline_validate(struct fimc_lite
> *fimc) }
>  		/* Retrieve format at the source pad */
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		sd = media_entity_to_v4l2_subdev(pad->entity);
> @@ -988,7 +987,6 @@ static int fimc_lite_link_setup(struct media_entity
> *entity, {
>  	struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
>  	struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
> -	unsigned int remote_ent_type = media_entity_type(remote->entity);
>  	int ret = 0;
> 
>  	if (WARN_ON(fimc == NULL))
> @@ -1000,7 +998,7 @@ static int fimc_lite_link_setup(struct media_entity
> *entity,
> 
>  	switch (local->index) {
>  	case FLITE_SD_PAD_SINK:
> -		if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) {
> +		if (!is_media_entity_v4l2_subdev(remote->entity)) {
>  			ret = -EINVAL;
>  			break;
>  		}
> @@ -1018,7 +1016,7 @@ static int fimc_lite_link_setup(struct media_entity
> *entity, case FLITE_SD_PAD_SOURCE_DMA:
>  		if (!(flags & MEDIA_LNK_FL_ENABLED))
>  			atomic_set(&fimc->out_path, FIMC_IO_NONE);
> -		else if (remote_ent_type == MEDIA_ENT_T_DEVNODE)
> +		else if (is_media_entity_v4l2_io(remote->entity))
>  			atomic_set(&fimc->out_path, FIMC_IO_DMA);
>  		else
>  			ret = -EINVAL;
> @@ -1027,7 +1025,7 @@ static int fimc_lite_link_setup(struct media_entity
> *entity, case FLITE_SD_PAD_SOURCE_ISP:
>  		if (!(flags & MEDIA_LNK_FL_ENABLED))
>  			atomic_set(&fimc->out_path, FIMC_IO_NONE);
> -		else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV)
> +		else if (is_media_entity_v4l2_subdev(remote->entity))
>  			atomic_set(&fimc->out_path, FIMC_IO_ISP);
>  		else
>  			ret = -EINVAL;
> diff --git a/drivers/media/platform/exynos4-is/media-dev.c
> b/drivers/media/platform/exynos4-is/media-dev.c index
> 92dbade2fffc..4a25df9dd869 100644
> --- a/drivers/media/platform/exynos4-is/media-dev.c
> +++ b/drivers/media/platform/exynos4-is/media-dev.c
> @@ -88,8 +88,7 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p,
> break;
>  		}
> 
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
>  		sd = media_entity_to_v4l2_subdev(pad->entity);
> 
> @@ -1062,7 +1061,7 @@ static int __fimc_md_modify_pipelines(struct
> media_entity *entity, bool enable) media_entity_graph_walk_start(&graph,
> entity);
> 
>  	while ((entity = media_entity_graph_walk_next(&graph))) {
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if (!is_media_entity_v4l2_io(entity))
>  			continue;
> 
>  		ret  = __fimc_md_modify_pipeline(entity, enable);
> @@ -1076,7 +1075,7 @@ static int __fimc_md_modify_pipelines(struct
> media_entity *entity, bool enable) media_entity_graph_walk_start(&graph,
> entity_err);
> 
>  	while ((entity_err = media_entity_graph_walk_next(&graph))) {
> -		if (media_entity_type(entity_err) != MEDIA_ENT_T_DEVNODE)
> +		if (!is_media_entity_v4l2_io(entity_err))
>  			continue;
> 
>  		__fimc_md_modify_pipeline(entity_err, !enable);
> diff --git a/drivers/media/platform/omap3isp/isp.c
> b/drivers/media/platform/omap3isp/isp.c index 69e7733d36cd..cb8ac90086c1
> 100644
> --- a/drivers/media/platform/omap3isp/isp.c
> +++ b/drivers/media/platform/omap3isp/isp.c
> @@ -691,7 +691,7 @@ static int isp_pipeline_pm_use_count(struct media_entity
> *entity) media_entity_graph_walk_start(&graph, entity);
> 
>  	while ((entity = media_entity_graph_walk_next(&graph))) {
> -		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_io(entity))
>  			use += entity->use_count;
>  	}
> 
> @@ -714,7 +714,7 @@ static int isp_pipeline_pm_power_one(struct media_entity
> *entity, int change) struct v4l2_subdev *subdev;
>  	int ret;
> 
> -	subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
> +	subdev = is_media_entity_v4l2_subdev(entity)
>  	       ? media_entity_to_v4l2_subdev(entity) : NULL;
> 
>  	if (entity->use_count == 0 && change > 0 && subdev != NULL) {
> @@ -754,7 +754,7 @@ static int isp_pipeline_pm_power(struct media_entity
> *entity, int change) media_entity_graph_walk_start(&graph, entity);
> 
>  	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_subdev(entity))
>  			ret = isp_pipeline_pm_power_one(entity, change);
> 
>  	if (!ret)
> @@ -764,7 +764,7 @@ static int isp_pipeline_pm_power(struct media_entity
> *entity, int change)
> 
>  	while ((first = media_entity_graph_walk_next(&graph))
>  	       && first != entity)
> -		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_subdev(first))
>  			isp_pipeline_pm_power_one(first, -change);
> 
>  	return ret;
> @@ -897,8 +897,7 @@ static int isp_pipeline_enable(struct isp_pipeline
> *pipe, break;
> 
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = pad->entity;
> @@ -988,8 +987,7 @@ static int isp_pipeline_disable(struct isp_pipeline
> *pipe) break;
> 
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = pad->entity;
> diff --git a/drivers/media/platform/omap3isp/ispvideo.c
> b/drivers/media/platform/omap3isp/ispvideo.c index
> 4c367352b1f7..52843ac2a9ca 100644
> --- a/drivers/media/platform/omap3isp/ispvideo.c
> +++ b/drivers/media/platform/omap3isp/ispvideo.c
> @@ -210,8 +210,7 @@ isp_video_remote_subdev(struct isp_video *video, u32
> *pad)
> 
>  	remote = media_entity_remote_pad(&video->pad);
> 
> -	if (remote == NULL ||
> -	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
>  		return NULL;
> 
>  	if (pad)
> @@ -243,7 +242,7 @@ static int isp_video_get_graph_data(struct isp_video
> *video, if (entity == &video->video.entity)
>  			continue;
> 
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if (!is_media_entity_v4l2_io(entity))
>  			continue;
> 
>  		__video = to_isp_video(media_entity_to_video_device(entity));
> @@ -917,7 +916,7 @@ static int isp_video_check_external_subdevs(struct
> isp_video *video, return -EINVAL;
>  	}
> 
> -	if (media_entity_type(source) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!is_media_entity_v4l2_subdev(source))
>  		return 0;
> 
>  	pipe->external = media_entity_to_v4l2_subdev(source);
> diff --git a/drivers/media/platform/s3c-camif/camif-capture.c
> b/drivers/media/platform/s3c-camif/camif-capture.c index
> eae667eab1b9..fb5b016cc0a1 100644
> --- a/drivers/media/platform/s3c-camif/camif-capture.c
> +++ b/drivers/media/platform/s3c-camif/camif-capture.c
> @@ -837,7 +837,7 @@ static int camif_pipeline_validate(struct camif_dev
> *camif)
> 
>  	/* Retrieve format at the sensor subdev source pad */
>  	pad = media_entity_remote_pad(&camif->pads[0]);
> -	if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  		return -EPIPE;
> 
>  	src_fmt.pad = pad->index;
> diff --git a/drivers/media/platform/vsp1/vsp1_video.c
> b/drivers/media/platform/vsp1/vsp1_video.c index 1f94c1a54e00..f74158224b93
> 100644
> --- a/drivers/media/platform/vsp1/vsp1_video.c
> +++ b/drivers/media/platform/vsp1/vsp1_video.c
> @@ -160,8 +160,7 @@ vsp1_video_remote_subdev(struct media_pad *local, u32
> *pad) struct media_pad *remote;
> 
>  	remote = media_entity_remote_pad(local);
> -	if (remote == NULL ||
> -	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
>  		return NULL;
> 
>  	if (pad)
> @@ -326,7 +325,7 @@ static int vsp1_pipeline_validate_branch(struct
> vsp1_pipeline *pipe, return -EPIPE;
> 
>  		/* We've reached a video node, that shouldn't have happened. */
> -		if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!is_media_entity_v4l2_subdev(pad->entity))
>  			return -EPIPE;
> 
>  		entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
> @@ -423,7 +422,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline
> *pipe, struct vsp1_rwpf *rwpf;
>  		struct vsp1_entity *e;
> 
> -		if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) {
> +		if (is_media_entity_v4l2_io(entity)) {
>  			pipe->num_video++;
>  			continue;
>  		}
> @@ -692,7 +691,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline
> *pipe, pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]);
> 
>  	while (pad) {
> -		if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity));
> diff --git a/drivers/media/platform/xilinx/xilinx-dma.c
> b/drivers/media/platform/xilinx/xilinx-dma.c index
> 88cd789cdaf7..8e14841bf445 100644
> --- a/drivers/media/platform/xilinx/xilinx-dma.c
> +++ b/drivers/media/platform/xilinx/xilinx-dma.c
> @@ -49,8 +49,7 @@ xvip_dma_remote_subdev(struct media_pad *local, u32 *pad)
>  	struct media_pad *remote;
> 
>  	remote = media_entity_remote_pad(local);
> -	if (remote == NULL ||
> -	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
>  		return NULL;
> 
>  	if (pad)
> @@ -113,8 +112,7 @@ static int xvip_pipeline_start_stop(struct xvip_pipeline
> *pipe, bool start) break;
> 
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = pad->entity;
> diff --git a/drivers/media/v4l2-core/v4l2-subdev.c
> b/drivers/media/v4l2-core/v4l2-subdev.c index e6e1115d8215..60da43772de9
> 100644
> --- a/drivers/media/v4l2-core/v4l2-subdev.c
> +++ b/drivers/media/v4l2-core/v4l2-subdev.c
> @@ -526,7 +526,7 @@ static int
>  v4l2_subdev_link_validate_get_format(struct media_pad *pad,
>  				     struct v4l2_subdev_format *fmt)
>  {
> -	if (media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV) {
> +	if (is_media_entity_v4l2_subdev(pad->entity)) {
>  		struct v4l2_subdev *sd =
>  			media_entity_to_v4l2_subdev(pad->entity);
> 
> diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c
> b/drivers/staging/media/davinci_vpfe/vpfe_video.c index
> 92573fa852a9..16763e0831f2 100644
> --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c
> +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c
> @@ -148,7 +148,7 @@ static void vpfe_prepare_pipeline(struct
> vpfe_video_device *video) while ((entity =
> media_entity_graph_walk_next(&graph))) {
>  		if (entity == &video->video_dev.entity)
>  			continue;
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if ((!is_media_entity_v4l2_io(remote->entity))
>  			continue;
>  		far_end = to_vpfe_video(media_entity_to_video_device(entity));
>  		if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
> @@ -293,7 +293,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline
> *pipe) media_entity_graph_walk_start(&graph, entity);
>  	while ((entity = media_entity_graph_walk_next(&graph))) {
> 
> -		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
> +		if !is_media_entity_v4l2_subdev(entity))

With these two chunks fixed,

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

I'm wondering, however, why you replace some occurrences of == 
MEDIA_ENT_T_DEVNODE with !is_media_entity_v4l2_subdev and some other with 
is_media_entity_v4l2_io.

>  			continue;
>  		subdev = media_entity_to_v4l2_subdev(entity);
>  		ret = v4l2_subdev_call(subdev, video, s_stream, 1);
> @@ -334,7 +334,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline
> *pipe)
> 
>  	while ((entity = media_entity_graph_walk_next(&graph))) {
> 
> -		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
> +		if (!is_media_entity_v4l2_subdev(entity))
>  			continue;
>  		subdev = media_entity_to_v4l2_subdev(entity);
>  		ret = v4l2_subdev_call(subdev, video, s_stream, 0);
> diff --git a/drivers/staging/media/omap4iss/iss.c
> b/drivers/staging/media/omap4iss/iss.c index 40591963b42b..44b88ff3ba83
> 100644
> --- a/drivers/staging/media/omap4iss/iss.c
> +++ b/drivers/staging/media/omap4iss/iss.c
> @@ -397,7 +397,7 @@ static int iss_pipeline_pm_use_count(struct media_entity
> *entity) media_entity_graph_walk_start(&graph, entity);
> 
>  	while ((entity = media_entity_graph_walk_next(&graph))) {
> -		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_io(entity))
>  			use += entity->use_count;
>  	}
> 
> @@ -419,7 +419,7 @@ static int iss_pipeline_pm_power_one(struct media_entity
> *entity, int change) {
>  	struct v4l2_subdev *subdev;
> 
> -	subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
> +	subdev = is_media_entity_v4l2_subdev(entity)
>  	       ? media_entity_to_v4l2_subdev(entity) : NULL;
> 
>  	if (entity->use_count == 0 && change > 0 && subdev != NULL) {
> @@ -461,7 +461,7 @@ static int iss_pipeline_pm_power(struct media_entity
> *entity, int change) media_entity_graph_walk_start(&graph, entity);
> 
>  	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_subdev(entity))
>  			ret = iss_pipeline_pm_power_one(entity, change);
> 
>  	if (!ret)
> @@ -471,7 +471,7 @@ static int iss_pipeline_pm_power(struct media_entity
> *entity, int change)
> 
>  	while ((first = media_entity_graph_walk_next(&graph))
>  	       && first != entity)
> -		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
> +		if (is_media_entity_v4l2_subdev(first))
>  			iss_pipeline_pm_power_one(first, -change);
> 
>  	return ret;
> @@ -590,8 +590,7 @@ static int iss_pipeline_disable(struct iss_pipeline
> *pipe, break;
> 
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = pad->entity;
> @@ -658,8 +657,7 @@ static int iss_pipeline_enable(struct iss_pipeline
> *pipe, break;
> 
>  		pad = media_entity_remote_pad(pad);
> -		if (pad == NULL ||
> -		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
>  			break;
> 
>  		entity = pad->entity;
> diff --git a/drivers/staging/media/omap4iss/iss_video.c
> b/drivers/staging/media/omap4iss/iss_video.c index
> 45a3f2d778fc..cbe5783735dc 100644
> --- a/drivers/staging/media/omap4iss/iss_video.c
> +++ b/drivers/staging/media/omap4iss/iss_video.c
> @@ -191,8 +191,7 @@ iss_video_remote_subdev(struct iss_video *video, u32
> *pad)
> 
>  	remote = media_entity_remote_pad(&video->pad);
> 
> -	if (remote == NULL ||
> -	    media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
> +	if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
>  		return NULL;
> 
>  	if (pad)
> @@ -217,7 +216,7 @@ iss_video_far_end(struct iss_video *video)
>  		if (entity == &video->video.entity)
>  			continue;
> 
> -		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
> +		if (!is_media_entity_v4l2_io(entity))
>  			continue;
> 
>  		far_end = to_iss_video(media_entity_to_video_device(entity));

-- 
Regards,

Laurent Pinchart