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Date:	Mon, 15 Sep 2014 19:10:57 +0800
From:	Chen Gang <>
To:	Jesper Nilsson <>,
	Geert Uytterhoeven <>
CC:	Michal Simek <>,
	Rob Herring <>,
	Paul Bolle <>,
	"" <>,
	Mikael Starvik <>,
	Jesper Nilsson <>
Subject: Re: [PATCH] arch/microblaze/kernel/setup.c: Add default 'screen_info"
 for fixing compiling break

On 9/15/14 16:50, Jesper Nilsson wrote:
> On Sun, Sep 14, 2014 at 10:45:23AM +0200, Geert Uytterhoeven wrote:
>> Hi Chen,
>> On Sun, Sep 14, 2014 at 10:32 AM, Chen Gang <> wrote:
>>> Add default one just like other architectures have done (e.g. cris,
>>> score, sh ...), the related error with allmodconfig:
>>>     LD      init/built-in.o
>>>   drivers/built-in.o: In function `vgacon_save_screen':
>>>   drivers/video/console/.tmp_vgacon.o:(.text+0x834d0): undefined reference to `screen_info'
>>>   drivers/video/console/.tmp_vgacon.o:(.text+0x834ec): undefined reference to `screen_info'
>>>   drivers/built-in.o: In function `vgacon_resize':
>>>   drivers/video/console/.tmp_vgacon.o:(.text+0x83cdc): undefined reference to `screen_info'
>>>   drivers/video/console/.tmp_vgacon.o:(.text+0x83d38): undefined reference to `screen_info'
>>>   drivers/built-in.o: In function `vgacon_switch':
>>>   drivers/video/console/.tmp_vgacon.o:(.text+0x83f50): undefined reference to `screen_info'
>>>   drivers/built-in.o:drivers/video/console/.tmp_vgacon.o:(.text+0x8407c): more undefined references to `screen_info' follow
>>>   make: *** [vmlinux] Error 1
>> Can microblaze actually have VGA?
>> If not, it's better to disable it.
>> BTW, it's interesting you mention cris, as VGA_CONSOLE depends on !CRIS
>> in drivers/video/console/Kconfig...
> No CRIS platform has ever had a video console.
>> I (still) think it's time to introduce ARCH_MIGHT_HAVE_VGA, and make
>> VGA_CONSOLE depend on that, cfr.
> Sounds reasonable, at least it can avoid the specific depends on !*arch* cruft.

Thank you very much, next when I try the ARCH_MIGHT_HAVE_VGA, I shall
process it (remove useless "screen_info").

Chen Gang

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