linux-kernel - Re: [PATCH] [media] platform: constify vb2

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Date:   Fri, 9 Sep 2016 11:03:55 -0500
From:   Benoit Parrot <bparrot@...com>
To:     Julia Lawall <Julia.Lawall@...6.fr>
CC:     Sylwester Nawrocki <s.nawrocki@...sung.com>,
        <kernel-janitors@...r.kernel.org>,
        Fabien Dessenne <fabien.dessenne@...com>,
        <linux-samsung-soc@...r.kernel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kukjin Kim <kgene@...nel.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Kamil Debski <kamil@...as.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Guennadi Liakhovetski <g.liakhovetski@....de>,
        Ludovic Desroches <ludovic.desroches@...el.com>,
        Hyun Kwon <hyun.kwon@...inx.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        Sören Brinkmann <soren.brinkmann@...inx.com>,
        <linux-media@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Andrzej Pietrasiewicz <andrzej.p@...sung.com>,
        Jacek Anaszewski <j.anaszewski@...sung.com>,
        Mikhail Ulyanov <mikhail.ulyanov@...entembedded.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH] [media] platform: constify vb2_ops structures

Hi,

Thanks for the patch.

Julia Lawall <Julia.Lawall@...6.fr> wrote on Fri [2016-Sep-09 01:59:10 +0200]:
> Check for vb2_ops structures that are only stored in the ops field of a
> vb2_queue structure.  That field is declared const, so vb2_ops structures
> that have this property can be declared as const also.
> 
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct vb2_ops i@p = { ... };
> 
> @ok@
> identifier r.i;
> struct vb2_queue e;
> position p;
> @@
> e.ops = &i@p;
> 
> @bad@
> position p != {r.p,ok.p};
> identifier r.i;
> struct vb2_ops e;
> @@
> e@i@p
> 
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
>  struct vb2_ops i = { ... };
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
> 
> ---
>  drivers/media/platform/exynos-gsc/gsc-m2m.c              |    2 +-
>  drivers/media/platform/exynos4-is/fimc-capture.c         |    2 +-
>  drivers/media/platform/exynos4-is/fimc-m2m.c             |    2 +-
>  drivers/media/platform/m2m-deinterlace.c                 |    2 +-
>  drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c       |    2 +-
>  drivers/media/platform/mx2_emmaprp.c                     |    2 +-
>  drivers/media/platform/rcar-vin/rcar-dma.c               |    2 +-
>  drivers/media/platform/rcar_jpu.c                        |    2 +-
>  drivers/media/platform/s5p-g2d/g2d.c                     |    2 +-
>  drivers/media/platform/s5p-jpeg/jpeg-core.c              |    2 +-
>  drivers/media/platform/sh_vou.c                          |    2 +-
>  drivers/media/platform/soc_camera/atmel-isi.c            |    2 +-
>  drivers/media/platform/soc_camera/rcar_vin.c             |    2 +-
>  drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c |    2 +-
>  drivers/media/platform/sti/bdisp/bdisp-v4l2.c            |    2 +-

For the following 2 drivers,

>  drivers/media/platform/ti-vpe/cal.c                      |    2 +-
>  drivers/media/platform/ti-vpe/vpe.c                      |    2 +-

Reviewed-by: Benoit Parrot <bparrot@...com>

>  drivers/media/platform/vim2m.c                           |    2 +-
>  drivers/media/platform/xilinx/xilinx-dma.c               |    2 +-
>  19 files changed, 19 insertions(+), 19 deletions(-)

Regards,
Benoit Parrot