linux-kernel - Re: [PATCH] media: imx: fix macro style error

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Date:   Mon, 10 Apr 2023 16:48:41 -0700
From:   Alison Schofield <alison.schofield@...el.com>
To:     Angel Alberto Carretero <angelalbertoc.r@...il.com>
Cc:     Steve Longerbeam <slongerbeam@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: imx: fix macro style error

On Sun, Apr 09, 2023 at 10:01:36PM +0200, Angel Alberto Carretero wrote:
> Wrap macro in parenthesis to fix checkpatch error.
> 
> Tested it by compiling the driver successfully.
> 
> Signed-off-by: Angel Alberto Carretero <angelalbertoc.r@...il.com>
> ---

Hi Angel,

The code change looks fine. Here are a few patch style suggestions:

- If you do 'git log --oneline imx-media-utils.c' you'll see that
  changes in utils file only, seem to have utils in the patch subject
  prefix. "media: imx: utils:"

- Commit message is vague. How about being explicit so anyone persuing
  those one-liners knows exactly what change was made.
  "Enclose IMX_BUS_FMTS macro in parentheses"

- The commit log 'why' is to conform to the kernel coding style, not
  to fix a checkpatch error. It is good to say Issue found by
  checkpatch, but that itself is not the 'why'.

Alison

>  drivers/staging/media/imx/imx-media-utils.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
> index 411e907b68eb..eb44c09071de 100644
> --- a/drivers/staging/media/imx/imx-media-utils.c
> +++ b/drivers/staging/media/imx/imx-media-utils.c
> @@ -7,7 +7,7 @@
>  #include <linux/module.h>
>  #include "imx-media.h"
>  
> -#define IMX_BUS_FMTS(fmt...) (const u32[]) {fmt, 0}
> +#define IMX_BUS_FMTS(fmt...) ((const u32[]) {fmt, 0})
>  
>  /*
>   * List of supported pixel formats for the subdevs.
> -- 
> 2.40.0
>