linux-kernel - Re: [PATCH 1/5] drm: shmobile: Use %p4cc to print fourcc codes

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Message-ID: <20230405030516.GG9915@pendragon.ideasonboard.com>
Date:   Wed, 5 Apr 2023 06:05:16 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] drm: shmobile: Use %p4cc to print fourcc codes

Hi Geert,

Thank you for the patch.

On Fri, Mar 31, 2023 at 04:48:07PM +0200, Geert Uytterhoeven wrote:
> Replace the printing of hexadecimal fourcc format codes by
> pretty-printed format names, using the "%p4cc" format specifier.

I really like %p4cc :-) I makes things much neater.

> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
>  drivers/gpu/drm/shmobile/shmob_drm_crtc.c | 4 ++--
>  drivers/gpu/drm/shmobile/shmob_drm_kms.c  | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
> index d354ab3077cecf94..713a7612244c647a 100644
> --- a/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
> +++ b/drivers/gpu/drm/shmobile/shmob_drm_crtc.c
> @@ -355,8 +355,8 @@ static int shmob_drm_crtc_mode_set(struct drm_crtc *crtc,
>  
>  	format = shmob_drm_format_info(crtc->primary->fb->format->format);
>  	if (format == NULL) {
> -		dev_dbg(sdev->dev, "mode_set: unsupported format %08x\n",
> -			crtc->primary->fb->format->format);
> +		dev_dbg(sdev->dev, "mode_set: unsupported format %p4cc\n",
> +			&crtc->primary->fb->format->format);
>  		return -EINVAL;
>  	}
>  
> diff --git a/drivers/gpu/drm/shmobile/shmob_drm_kms.c b/drivers/gpu/drm/shmobile/shmob_drm_kms.c
> index 60a2c8d8a0d947d2..3c5fe3bc183c7c13 100644
> --- a/drivers/gpu/drm/shmobile/shmob_drm_kms.c
> +++ b/drivers/gpu/drm/shmobile/shmob_drm_kms.c
> @@ -96,8 +96,8 @@ shmob_drm_fb_create(struct drm_device *dev, struct drm_file *file_priv,
>  
>  	format = shmob_drm_format_info(mode_cmd->pixel_format);
>  	if (format == NULL) {
> -		dev_dbg(dev->dev, "unsupported pixel format %08x\n",
> -			mode_cmd->pixel_format);
> +		dev_dbg(dev->dev, "unsupported pixel format %p4cc\n",
> +			&mode_cmd->pixel_format);
>  		return ERR_PTR(-EINVAL);
>  	}
>  

-- 
Regards,

Laurent Pinchart