From: Paul Mundt <lethal@linux-sh.org>
Date: Tue, 11 Jan 2011 06:02:59 +0000 (+0900)
Subject: sh: Fix up legacy PTEA space attribute mapping.
X-Git-Tag: v2.6.38-rc1~234^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efb3e34b6176d30c4fe8635fa8e1beb6280cc2cd;p=pandora-kernel.git

sh: Fix up legacy PTEA space attribute mapping.

When p3_ioremap() was converted to ioremap_prot() there was some breakage
introduced where the 29-bit segmentation logic would trap the area range
and return an identity mapping without having allowed the area
specification to force mapping through page tables. This wires up a PCC
mask for pgprot verification to work out whether to short-circuit the
identity mapping on legacy parts, restoring the previous behaviour.

Reported-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: stable@kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

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