From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 17 Apr 2013 15:46:19 +0000 (-0700)
Subject: s390: move dummy io_remap_pfn_range() to asm/pgtable.h
X-Git-Tag: v3.9-rc8~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f2e29031e6c67802e7370292dd050fd62f337ee;p=pandora-kernel.git

s390: move dummy io_remap_pfn_range() to asm/pgtable.h

Commit b4cbb197c7e7 ("vm: add vm_iomap_memory() helper function") added
a helper function wrapper around io_remap_pfn_range(), and every other
architecture defined it in <asm/pgtable.h>.

The s390 choice of <asm/io.h> may make sense, but is not very convenient
for this case, and gratuitous differences like that cause unexpected errors like this:

   mm/memory.c: In function 'vm_iomap_memory':
   mm/memory.c:2439:2: error: implicit declaration of function 'io_remap_pfn_range' [-Werror=implicit-function-declaration]

Glory be the kbuild test robot who noticed this, bisected it, and
reported it to the guilty parties (ie me).

Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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