linux-kernel - Re: [PATCH 0/4] [media] Media entity cleanups and build fixes

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Message-ID: <20150819135837.7775703c@recife.lan>
Date:	Wed, 19 Aug 2015 13:58:37 -0300
From:	Mauro Carvalho Chehab <mchehab@....samsung.com>
To:	Javier Martinez Canillas <javier@....samsung.com>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	Sören Brinkmann <soren.brinkmann@...inx.com>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-sh@...r.kernel.org, Hans Verkuil <hans.verkuil@...co.com>,
	Hyun Kwon <hyun.kwon@...inx.com>,
	linux-samsung-soc@...r.kernel.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	"Prabhakar\"" <prabhakar.csengg@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	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 0/4] [media] Media entity cleanups and build fixes

Hi Javier,

Em Wed, 19 Aug 2015 17:35:18 +0200
Javier Martinez Canillas <javier@....samsung.com> escreveu:

> Hello,
> 
> This series contains a couple of build fixes and cleanups for the
> Media Controller framework. The goal of the series is to get rid of
> the struct media_entity .parent member since now that a media_gobj is
> embedded into entities, the media_gobj .mdev member can be used to
> store a pointer to the parent struct media_device.
> 
> So the .parent field becomes redundant and can be removed after all
> the users are converted to use entity .graph_obj.mdev instead.
> 
> Patches 1/4 and 2/4 are build fixes I found while build testing if no
> regressions were introduced by the conversion. 

Crap. Those omap drivers depend on some sub-arch specific DMA functions,
and can't use COMPILE_TEST. I hope some day someone would fix it,
in order to avoid troubles like that.

> Patch 3/4 converts
> all the drivers and the MC core to use .mdev instead of .parent and
> finally patch 4/4 removes the .parent field since now is unused.

Thanks for that!
All patches look good on my eyes.
> 
> The series depend on Mauro's "[PATCH v6 0/8] MC preparation patches
> series" [0].

I'll add those patches on my experimental branch together with the
other patches that belong to the MC next gen rework.

> 
> The transformation were automated using a coccinelle semantic patch
> and the drivers were build tested using allyesconfig and x-building
> the ARM Exynos and OMAP defconfigs + the needed media config options.
> 
> Best regards,
> Javier
> 
> [0]: http://www.mail-archive.com/linux-media@vger.kernel.org/msg91330.html
> 
> 
> Javier Martinez Canillas (4):
>   [media] staging: omap4iss: get entity ID using media_entity_id()
>   [media] omap3isp: get entity ID using media_entity_id()
>   [media] media: use entity.graph_obj.mdev instead of .parent
>   [media] media: remove media entity .parent field
> 
>  drivers/media/media-device.c                       |  8 ++---
>  drivers/media/media-entity.c                       | 34 ++++++++++++----------
>  drivers/media/platform/exynos4-is/fimc-isp-video.c |  6 ++--
>  drivers/media/platform/exynos4-is/fimc-lite.c      |  8 ++---
>  drivers/media/platform/exynos4-is/media-dev.c      |  2 +-
>  drivers/media/platform/exynos4-is/media-dev.h      |  8 ++---
>  drivers/media/platform/omap3isp/isp.c              | 11 ++++---
>  drivers/media/platform/omap3isp/ispccdc.c          |  2 +-
>  drivers/media/platform/omap3isp/ispvideo.c         | 10 ++++---
>  drivers/media/platform/vsp1/vsp1_video.c           |  2 +-
>  drivers/media/platform/xilinx/xilinx-dma.c         |  2 +-
>  drivers/staging/media/davinci_vpfe/vpfe_video.c    |  6 ++--
>  drivers/staging/media/omap4iss/iss.c               |  6 ++--
>  drivers/staging/media/omap4iss/iss_video.c         |  4 +--
>  include/media/media-entity.h                       |  1 -
>  15 files changed, 58 insertions(+), 52 deletions(-)
> 

Thanks and regards,
Mauro
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