drm/amdgpu: fix TC cache flushing

TC_WB_ACTION must be set according to the docs

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Marek Olšák 2016-04-28 14:32:44 +02:00 • committed by Alex Deucher
commit f84e63f2ff
2 changed files with 4 additions and 1 deletions