linux-kernel - Re: [PATCH] arch/microblaze/kernel/setup.c: Add default 'screen

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Date:	Sun, 14 Sep 2014 17:02:58 +0800
From:	Chen Gang <gang.chen.5i5j@...il.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Michal Simek <monstr@...str.eu>,
	Rob Herring <rob.herring@...xeda.com>,
	Paul Bolle <pebolle@...cali.nl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>
Subject: Re: [PATCH] arch/microblaze/kernel/setup.c: Add default 'screen_info"
 for fixing compiling break

On 09/14/2014 04:45 PM, Geert Uytterhoeven wrote:
> Hi Chen,
> 
> On Sun, Sep 14, 2014 at 10:32 AM, Chen Gang <gang.chen.5i5j@...il.com> 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.
> 

Welcome the related microblaze maintainers ideas for it

> BTW, it's interesting you mention cris, as VGA_CONSOLE depends on !CRIS
> in drivers/video/console/Kconfig...
> 

Welcome the related cris maintainers ideas for it.

> I (still) think it's time to introduce ARCH_MIGHT_HAVE_VGA, and make
> VGA_CONSOLE depend on that, cfr.
> 
> commit f13399f033ae3d49e1808bacabd83d116844c94e
> Merge: 049ffa8ab33a b2c32b32a212
> Author: Linus Torvalds <torvalds@...ux-foundation.org>
> Date:   Fri Nov 15 14:05:15 2013 -0800
> 
>     Merge tag 'for-linus' of
> git://linux-c6x.org/git/projects/linux-c6x-upstreaming
> 
>     Pull Kconfig cleanups from Mark Salter:
>      "Remove some unused config options from C6X and clean up PC_PARPORT
>       dependencies.  The latter was discussed here:
> 
>         https://lkml.org/lkml/2013/10/8/12"
> 
>     * tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
>       c6x: remove unused COMMON_CLKDEV Kconfig parameter
>       Kconfig cleanup (PARPORT_PC dependencies)
>       x86: select ARCH_MIGHT_HAVE_PC_PARPORT
>       unicore32: select ARCH_MIGHT_HAVE_PC_PARPORT
>       sparc: select ARCH_MIGHT_HAVE_PC_PARPORT
>       sh: select ARCH_MIGHT_HAVE_PC_PARPORT
>       powerpc: select ARCH_MIGHT_HAVE_PC_PARPORT
>       parisc: select ARCH_MIGHT_HAVE_PC_PARPORT
>       mips: select ARCH_MIGHT_HAVE_PC_PARPORT
>       microblaze: select ARCH_MIGHT_HAVE_PC_PARPORT
>       m68k: select ARCH_MIGHT_HAVE_PC_PARPORT
>       ia64: select ARCH_MIGHT_HAVE_PC_PARPORT
>       arm: select ARCH_MIGHT_HAVE_PC_PARPORT
>       alpha: select ARCH_MIGHT_HAVE_PC_PARPORT
>       c6x: remove unused parameter in Kconfig
> 

At least for me, the contents above sounds reasonable.

And also thank you very much for always supporting me for sending
'global' patches for Kconfig.

But in honest, what I have done is not quite well, at present. And I
should continue trying...


Thanks.
-- 
Chen Gang

Open share and attitude like air water and life which God blessed
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