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Date: Fri, 20 Apr 2012 11:49:02 +0100
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Subject: Re: [PATCH V2 1/4] vgaarb: Add support for setting the default video device
From: Dave Airlie <airlied@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Matthew Garrett <mjg@redhat.com>, linux-kernel@vger.kernel.org,
        benh@kernel.crashing.org, airlied@redhat.com,
        "Linux/m68k" <linux-m68k@vger.kernel.org>
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On Wed, Apr 18, 2012 at 10:44 AM, Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> On Wed, Apr 18, 2012 at 11:37, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
>> On Mon, Apr 16, 2012 at 22:26, Matthew Garrett <mjg@redhat.com> wrote:
>>> --- a/include/linux/vgaarb.h
>>> +++ b/include/linux/vgaarb.h
>>> @@ -31,6 +31,7 @@
>>>  #ifndef LINUX_VGA_H
>>>  #define LINUX_VGA_H
>>>
>>> +#include <video/vga.h>
>>
>> Is this include really needed? x86_64/allmodconfig builds fine without it.
>>
>> It causes m68k/allmodconfig to fail with:
>>
>> In file included from include/linux/vgaarb.h:35,
>>                 from drivers/gpu/drm/drm_irq.c:43:
>> include/video/vga.h: In function ‘vga_mm_r’:
>> include/video/vga.h:242: error: implicit declaration of function ‘z_readb’
>> include/video/vga.h: In function ‘vga_mm_w’:
>> include/video/vga.h:247: error: implicit declaration of function ‘z_writeb’
>> include/video/vga.h: In function ‘vga_mm_w_fast’:
>> include/video/vga.h:253: error: implicit declaration of function ‘z_writew’
>> make[1]: *** [drivers/gpu/drm/drm_irq.o] Error 1
>>
>> http://kisskb.ellerman.id.au/kisskb/buildresult/6127136/
>>
>> Currently <video/vga.h> has a crude hack to make cirrusfb work on Amiga,
>> but that's the only VGA support m68k has.
>> There's also no <asm/vga.h>, so m68k/allmodconfig with CONFIG_AMIGA
>> disabled now fails with:
>>
>> In file included from include/linux/vgaarb.h:34,
>>                 from drivers/gpu/drm/drm_irq.c:42:
>> include/video/vga.h:23:21: error: asm/vga.h: No such file or directory
>> make[1]: *** [drivers/gpu/drm/drm_irq.o] Error 1
>>
>> Removing the #include <video/vga.h> fixes both cases.
>
> Anyway, I'll move the hack for cirrusfb on Amiga to <asm/vga.h> on m68k.
>
> You still may want to remove the include of <video/vga.h> if it's not needed.

I don't think its necessary, I'm dropping it here. should be gone in
-next soon after.

Dave.