linux-kernel - linux-next: build failure after merge of the tip tree

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Message-ID: <20150728153303.2ba27786@canb.auug.org.au>
Date:	Tue, 28 Jul 2015 15:33:03 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Luis R. Rodriguez" <mcgrof@...e.com>
Subject: linux-next: build failure after merge of the tip tree

Hi all,

After merging the tip tree, today's linux-next build (powerpc
allyesconfig) failed like this:

drivers/video/fbdev/aty/atyfb_base.c: In function 'atyfb_setup_generic':
drivers/video/fbdev/aty/atyfb_base.c:3447:2: error: implicit declaration of function 'ioremap_uc' [-Werror=implicit-function-declaration]
  par->ati_regbase = ioremap_uc(info->fix.mmio_start, 0x1000);
  ^
drivers/video/fbdev/aty/atyfb_base.c:3447:19: warning: assignment makes pointer from integer without a cast
  par->ati_regbase = ioremap_uc(info->fix.mmio_start, 0x1000);
                   ^

Caused by commits

  3cc2dac5be3f ("drivers/video/fbdev/atyfb: Replace MTRR UC hole with strong UC")
  8c7ea50c010b ("x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default")

The latter defines ioremap_uc() for x86 and those architectures that
use asm-generic/io.h - which is not all of them :-( .  The former commit
then uses ioremap_uc().

I have reverted commit 3cc2dac5be3f (and 7d89a3cb159a that follows it)
for today.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
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