drm/radeon: use HDP_MEM_COHERENCY_FLUSH_CNTL for sdma as well
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 7 Nov 2013 18:43:37 +0000 (13:43 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Fri, 8 Nov 2013 17:33:37 +0000 (12:33 -0500)
The new HDP flush method doesn't seem to work reliably on
sDMA either, so use the old method here too.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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