From: Michel Dänzer <michel@tungstengraphics.com>
Date: Mon, 7 Aug 2006 10:37:46 +0000 (+1000)
Subject: drm: radeon: fix up bus mastering when writeback is disabled
X-Git-Tag: v2.6.19-rc1~641^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae1b1a4816ac11075d338af79a239f4c326d675c;p=pandora-kernel.git

drm: radeon: fix up bus mastering when writeback is disabled

When writeback isn't used, actually disable it in the hardware.

Not doing this might waste bus bandwidth or even cause memory corruption or
system crashes on systems that check bus transfers. No such incident has been
reported though.

Signed-off-by: Dave Airlie <airlied@linux.ie>
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