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Message-ID: <a720e92592db824e65d0fcc03d89e20ea59b11a6.camel@physik.fu-berlin.de>
Date:   Thu, 21 Sep 2023 09:01:29 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Thomas Zimmermann <tzimmermann@...e.de>, deller@....de,
        sam@...nborg.org, arnd@...db.de, javierm@...hat.com,
        rdunlap@...radead.org
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, oe-kbuild-all@...ts.linux.dev,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] fbdev/sh7760fb: Depend on FB=y

On Mon, 2023-09-18 at 11:03 +0200, Thomas Zimmermann wrote:
> Fix linker error if FB=m about missing fb_io_read and fb_io_write. The
> linker's error message suggests that this config setting has already
> been broken for other symbols.
> 
>   All errors (new ones prefixed by >>):
> 
>      sh4-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_probe':
>      sh7760fb.c:(.text+0x374): undefined reference to `framebuffer_alloc'
>      sh4-linux-ld: sh7760fb.c:(.text+0x394): undefined reference to `fb_videomode_to_var'
>      sh4-linux-ld: sh7760fb.c:(.text+0x39c): undefined reference to `fb_alloc_cmap'
>      sh4-linux-ld: sh7760fb.c:(.text+0x3a4): undefined reference to `register_framebuffer'
>      sh4-linux-ld: sh7760fb.c:(.text+0x3ac): undefined reference to `fb_dealloc_cmap'
>      sh4-linux-ld: sh7760fb.c:(.text+0x434): undefined reference to `framebuffer_release'
>      sh4-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_remove':
>      sh7760fb.c:(.text+0x800): undefined reference to `unregister_framebuffer'
>      sh4-linux-ld: sh7760fb.c:(.text+0x804): undefined reference to `fb_dealloc_cmap'
>      sh4-linux-ld: sh7760fb.c:(.text+0x814): undefined reference to `framebuffer_release'
>   >> sh4-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0xc): undefined reference to `fb_io_read'
>   >> sh4-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x10): undefined reference to `fb_io_write'
>      sh4-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x2c): undefined reference to `cfb_fillrect'
>      sh4-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x30): undefined reference to `cfb_copyarea'
>      sh4-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x34): undefined reference to `cfb_imageblit'
> 
> Suggested-by: Randy Dunlap <rdunlap@...radead.org>
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202309130632.LS04CPWu-lkp@intel.com/
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> ---
>  drivers/video/fbdev/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
> index 4455bfd57f0ec..64ccb34d882dd 100644
> --- a/drivers/video/fbdev/Kconfig
> +++ b/drivers/video/fbdev/Kconfig
> @@ -1756,7 +1756,7 @@ config FB_COBALT
>  
>  config FB_SH7760
>  	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
> -	depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
> +	depends on FB=y && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
>  		|| CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721)
>  	select FB_IOMEM_HELPERS
>  	help

Acked-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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