linux-kernel - Re: [PATCH 3/4] [media] media: use entity.graph

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Date:	Thu, 20 Aug 2015 14:43:11 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	Javier Martinez Canillas <javier@....samsung.com>,
	linux-kernel@...r.kernel.org
CC:	Sören Brinkmann <soren.brinkmann@...inx.com>,
	devel@...verdev.osuosl.org, Kukjin Kim <kgene@...nel.org>,
	linux-sh@...r.kernel.org,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Hyun Kwon <hyun.kwon@...inx.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	linux-samsung-soc@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	"Prabhakar\"" <prabhakar.csengg@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Michal Simek <michal.simek@...inx.com>,
	linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 3/4] [media] media: use entity.graph_obj.mdev instead
 of .parent

On 08/19/15 17:35, Javier Martinez Canillas wrote:
> The struct media_entity has a .parent field that stores a pointer
> to the parent struct media_device. But recently a media_gobj was
> embedded into the entities and since struct media_gojb already has
> a pointer to a struct media_device in the .mdev field, the .parent
> field becomes redundant and can be removed.
> 
> This patch replaces all the usage of .parent by .graph_obj.mdev so
> that field will become unused and can be removed on a later patch.
> 
> No functional changes.
> 
> The transformation was made using the following coccinelle spatch:
> 
> @@
> struct media_entity *me;
> @@
> 
> - me->parent
> + me->graph_obj.mdev
> 
> @@
> struct media_entity *link;
> @@
> 
> - link->source->entity->parent
> + link->source->entity->graph_obj.mdev
> 
> @@
> struct exynos_video_entity *ve;
> @@
> 
> - ve->vdev.entity.parent
> + ve->vdev.entity.graph_obj.mdev
> 
> Suggested-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>

Acked-by: Hans Verkuil <hans.verkuil@...co.com>

Regards,

	Hans
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