linux-kernel - Re: [PATCH] fbdev: sh7760fb: require FB=y to build cleanly

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Date:   Thu, 21 Sep 2023 09:05:20 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Randy Dunlap <rdunlap@...radead.org>, linux-kernel@...r.kernel.org
Cc:     Daniel Vetter <daniel@...ll.ch>, Helge Deller <deller@....de>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-sh@...r.kernel.org
Subject: Re: [PATCH] fbdev: sh7760fb: require FB=y to build cleanly

Hi Randy!

On Wed, 2023-09-20 at 23:02 -0700, Randy Dunlap wrote:
> Fix build errors when CONFIG_FB=m and CONFIG_FB_SH7760=y:
> 
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_probe':
> sh7760fb.c:(.text+0x374): undefined reference to `framebuffer_alloc'
> sh2-linux-ld: sh7760fb.c:(.text+0x394): undefined reference to `fb_videomode_to_var'
> sh2-linux-ld: sh7760fb.c:(.text+0x3a0): undefined reference to `fb_alloc_cmap'
> sh2-linux-ld: sh7760fb.c:(.text+0x3a4): undefined reference to `register_framebuffer'
> sh2-linux-ld: sh7760fb.c:(.text+0x3ac): undefined reference to `fb_dealloc_cmap'
> sh2-linux-ld: sh7760fb.c:(.text+0x434): undefined reference to `framebuffer_release'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o: in function `sh7760fb_remove':
> sh7760fb.c:(.text+0x800): undefined reference to `unregister_framebuffer'
> sh2-linux-ld: sh7760fb.c:(.text+0x804): undefined reference to `fb_dealloc_cmap'
> sh2-linux-ld: sh7760fb.c:(.text+0x814): undefined reference to `framebuffer_release'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0xc): undefined reference to `fb_io_read'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x10): undefined reference to `fb_io_write'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x2c): undefined reference to `cfb_fillrect'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x30): undefined reference to `cfb_copyarea'
> sh2-linux-ld: drivers/video/fbdev/sh7760fb.o:(.rodata+0x34): undefined reference to `cfb_imageblit'
> 
> Fixes: 4a25e41831ee ("video: sh7760fb: SH7760/SH7763 LCDC framebuffer driver")
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: Helge Deller <deller@....de>
> Cc: linux-fbdev@...r.kernel.org
> Cc: dri-devel@...ts.freedesktop.org
> Cc: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
> Cc: linux-sh@...r.kernel.org
> ---
>  drivers/video/fbdev/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -- a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
> --- a/drivers/video/fbdev/Kconfig
> +++ b/drivers/video/fbdev/Kconfig
> @@ -1762,7 +1762,7 @@ 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

Actually, Thomas Zimmermann already posted the same patch already on Monday ;-).

See [1].

Adrian

> [1] https://marc.info/?l=dri-devel&m=169502772500717&w=2

-- 
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