From: Jerome Glisse <jglisse@redhat.com>
Date: Thu, 4 Feb 2010 19:36:39 +0000 (+0100)
Subject: drm/radeon/kms: fix regression rendering issue on R6XX/R7XX
X-Git-Tag: v2.6.33-rc7~8^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=062b389c8704e539e234cfd67c7e034a514f50bf;p=pandora-kernel.git

drm/radeon/kms: fix regression rendering issue on R6XX/R7XX

It seems that some R6XX/R7XX silently ignore HDP flush when
programmed through ring, this patch addback an ioctl callback
to allow R6XX/R7XX hw to perform such flush through MMIO in
order to fix a regression. For more details see:

http://bugzilla.kernel.org/show_bug.cgi?id=15186

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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