From: Paul Mackerras <paulus@samba.org>
Date: Tue, 1 Jun 2010 19:33:08 +0000 (+0000)
Subject: agp/uninorth: Fix oops caused by flushing too much
X-Git-Tag: v2.6.35-rc2~45^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79905ad50bcf025deb81382413719ed600734941;p=pandora-kernel.git

agp/uninorth: Fix oops caused by flushing too much

This fixes a sporadic oops at boot on G5 Power Macs.  The table_end
variable has the address of the last byte of the table.  Adding on
PAGE_SIZE means we flush too much, and if the page after the table
is not mapped for any reason, the kernel will oops.  Instead we add
on 1 because flush_dcache_range() interprets its second argument as
the first byte past the range to be flushed.

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

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