linux-kernel - Re: [PATCH 2/2] drm/panic: Restrict graphical logo handling to built-in

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Date: Wed, 26 Jun 2024 16:20:47 +0200
From: Jocelyn Falempe <jfalempe@...hat.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 kernel test robot <lkp@...el.com>
Subject: Re: [PATCH 2/2] drm/panic: Restrict graphical logo handling to
 built-in



On 26/06/2024 10:41, Geert Uytterhoeven wrote:
> When CONFIG_DRM_PANIC=y, but CONFIG_DRM=m:
> 
>      ld: drivers/gpu/drm/drm_panic.o: in function `drm_panic_setup_logo':
>      drivers/gpu/drm/drm_panic.c:99: multiple definition of `init_module'; drivers/gpu/drm/drm_drv.o:drivers/gpu/drm/drm_drv.c:1079: first defined here
> 
> Fix this by restricting the graphical logo handling and its
> device_initcall() to the built-in case.  Logos are freed during late
> kernel initialization, so they are no longer available at module load
> time anyway.

Thanks a lot for this fix.

Reviewed-by: Jocelyn Falempe <jfalempe@...hat.com>

> 
> Fixes: 294bbd1f2697ff28 ("drm/panic: Add support for drawing a monochrome graphical logo")
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202406261341.GYsbLpN1-lkp@intel.com/
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
>   drivers/gpu/drm/drm_panic.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c
> index 67f78b5a76b61e3d..948aed00595eb6dd 100644
> --- a/drivers/gpu/drm/drm_panic.c
> +++ b/drivers/gpu/drm/drm_panic.c
> @@ -91,7 +91,7 @@ static const struct drm_panic_line logo_ascii[] = {
>   	PANIC_LINE(" \\___)=(___/"),
>   };
>   
> -#ifdef CONFIG_LOGO
> +#if defined(CONFIG_LOGO) && !defined(MODULE)
>   static const struct linux_logo *logo_mono;
>   
>   static int drm_panic_setup_logo(void)