linux-kernel - Re: [-mm Patch] uml: fix a building error

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Message-Id: <200801172142.14326.m.kozlowski@tuxland.pl>
Date:	Thu, 17 Jan 2008 21:42:12 +0100
From:	Mariusz Kozlowski <m.kozlowski@...land.pl>
To:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"WANG Cong" <xiyou.wangcong@...il.com>,
	linux-kernel@...r.kernel.org, "Jeff Dike" <jdike@...toit.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	"David Miller" <davem@...emloft.net>, sparclinux@...r.kernel.org,
	"Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: [-mm Patch] uml: fix a building error

Hello,

> >> > This patch fixes this building error:
> >> > ...
> >> > drivers/char/mem.c: In function 'read_mem':
> >> > drivers/char/mem.c:136: error: implicit declaration of 
> >function 'unxlate_dev_mem_ptr'
> >> > ...
> >> 
> >> I see this on sparc64 as well:
> >> 
> >>   CC      drivers/char/mem.o
> >> drivers/char/mem.c: In function 'read_mem':
> >> drivers/char/mem.c:136: error: implicit declaration of 
> >function 'unxlate_dev_mem_ptr'
> >> make[2]: *** [drivers/char/mem.o] Error 1
> >> make[1]: *** [drivers/char] Error 2
> >> make: *** [drivers] Error 2
> >> 
> >> Does sparc64 need similar fix?
> >> 
> >
> >The PAT patches strike again.
> >
> >Ingo, I think you might need to toss some cross-compilers into 
> >that build
> >test setup of yours.
> 
> These functions were defined for other archs in asm-generic/iomap.h.
> We need all archs including it in io.h. I now see only few archs are
> including it..
>
> Apart from unxlate, there is also ioremap_wc which is defined in the
> same way.
> 
> I can send a patch for this. But, I don't have cross compiler setup for
> all archs to test. Andrew, I will need your help.

I can confirm that this fixes the build problem for sparc64 here.

Regards,

	Mariusz
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