linux-kernel - Re: [PATCH] [media] staging: davinci

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Date:   Tue, 22 Nov 2016 23:37:35 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        mchehab@....samsung.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thaissa Falbo <thaissa.falbo@...il.com>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [media] staging: davinci_vpfe: fix W=1 build warnings

Hi Arnd,

Thank you for the patch, and sorry for the late reply.

On Monday 20 Jun 2016 17:47:56 Arnd Bergmann wrote:
> When building with "make W=1", we get multiple harmless build warnings
> for the vpfe driver:
> 
> drivers/staging/media/davinci_vpfe/dm365_resizer.c:241:1: error: 'static' is
> not at beginning of declaration [-Werror=old-style-declaration]
> drivers/staging/media/davinci_vpfe/dm365_resizer.c: In function
> 'resizer_set_defualt_configuration':
> drivers/staging/media/davinci_vpfe/dm365_resizer.c:831:16: error:
> initialized field overwritten [-Werror=override-init]
> drivers/staging/media/davinci_vpfe/dm365_resizer.c:831:16: note: (near
> initialization for 'rsz_default_config.rsz_rsc_param[0].h_typ_c')
> drivers/staging/media/davinci_vpfe/dm365_resizer.c:849:16: error:
> initialized field overwritten [-Werror=override-init]
> drivers/staging/media/davinci_vpfe/dm365_resizer.c:849:16: note: (near
> initialization for 'rsz_default_config.rsz_rsc_param[1].h_typ_c')
> 
> All of them are trivial to fix without changing the behavior of the
> driver, as "static const" is interpreted the same as "const static",
> and VPFE_RSZ_INTP_CUBIC is defined as zero, so the initializations
> are not really needed.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

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

and applied to my tree. I will send a pull request for v4.11.
> ---
>  drivers/staging/media/davinci_vpfe/dm365_resizer.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c
> b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index
> 3cd56cc132c7..567f995fd0f9 100644
> --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c
> +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c
> @@ -237,9 +237,8 @@ resizer_calculate_resize_ratios(struct
> vpfe_resizer_device *resizer, int index) ((informat->width) * 256) /
> (outformat->width);
>  }
> 
> -void
> -static resizer_enable_422_420_conversion(struct resizer_params *param,
> -					 int index, bool en)
> +static void resizer_enable_422_420_conversion(struct resizer_params *param,
> +					      int index, bool en)
>  {
>  	param->rsz_rsc_param[index].cen = en;
>  	param->rsz_rsc_param[index].yen = en;
> @@ -825,7 +824,7 @@ resizer_set_defualt_configuration(struct
> vpfe_resizer_device *resizer) .o_hsz = WIDTH_O - 1,
>  				.v_dif = 256,
>  				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
> -				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
> +				.v_typ_c = VPFE_RSZ_INTP_CUBIC,
>  				.h_dif = 256,
>  				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
>  				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
> @@ -843,7 +842,7 @@ resizer_set_defualt_configuration(struct
> vpfe_resizer_device *resizer) .o_hsz = WIDTH_O - 1,
>  				.v_dif = 256,
>  				.v_typ_y = VPFE_RSZ_INTP_CUBIC,
> -				.h_typ_c = VPFE_RSZ_INTP_CUBIC,
> +				.v_typ_c = VPFE_RSZ_INTP_CUBIC,
>  				.h_dif = 256,
>  				.h_typ_y = VPFE_RSZ_INTP_CUBIC,
>  				.h_typ_c = VPFE_RSZ_INTP_CUBIC,

-- 
Regards,

Laurent Pinchart