linux-kernel - Re: [PATCH] media: v4l2-mc: Drop subdev check in v4l2_create_fwnode_links_to

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Date:   Fri, 21 Apr 2023 15:10:48 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Vaishnav Achath <vaishnav.a@...com>
Cc:     mchehab@...nel.org, sakari.ailus@...ux.intel.com,
        hverkuil-cisco@...all.nl, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org, u-kumar1@...com
Subject: Re: [PATCH] media: v4l2-mc: Drop subdev check in
 v4l2_create_fwnode_links_to_pad()

Hi Vaishnav,

Thank you for the patch.

On Fri, Apr 21, 2023 at 03:34:30PM +0530, Vaishnav Achath wrote:
> While updating v4l2_create_fwnode_links_to_pad() to accept non-subdev
> sinks, the check is_media_entity_v4l2_subdev() was not removed which
> prevented the function from being used with non-subdev sinks, Drop the
> unnecessary check.
> 
> Fixes: bd5a03bc5be8 ("media: Accept non-subdev sinks in v4l2_create_fwnode_links_to_pad()")
> 
> Signed-off-by: Vaishnav Achath <vaishnav.a@...com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

Sakari, the commit this patch fixes will land in v6.4, should this be
merged as a v6.4 fix ?

> ---
>  drivers/media/v4l2-core/v4l2-mc.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c
> index bf0c18100664..22fe08fce0a9 100644
> --- a/drivers/media/v4l2-core/v4l2-mc.c
> +++ b/drivers/media/v4l2-core/v4l2-mc.c
> @@ -314,8 +314,7 @@ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev *src_sd,
>  {
>  	struct fwnode_handle *endpoint;
>  
> -	if (!(sink->flags & MEDIA_PAD_FL_SINK) ||
> -	    !is_media_entity_v4l2_subdev(sink->entity))
> +	if (!(sink->flags & MEDIA_PAD_FL_SINK))
>  		return -EINVAL;
>  
>  	fwnode_graph_for_each_endpoint(dev_fwnode(src_sd->dev), endpoint) {

-- 
Regards,

Laurent Pinchart