From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Thu, 26 Jul 2007 04:07:13 +0000 (+1000)
Subject: [POWERPC] Add function to check if address is an IO port
X-Git-Tag: v2.6.23-rc2~190^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6dfbde209171cd15407e7540d363a434a489aaca;p=pandora-kernel.git

[POWERPC] Add function to check if address is an IO port

This adds a function that tells you if a given kernel virtual address
is hitting a PCI or ISA IO port permanent mapping or not. This is to
be used in the next patch to fix iomap APIs to properly unmap things.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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