drm/radeon: work around a hw bug in MGCG on CIK
commit08295790175190009e76b31f22572e609608ff0c
authorAlex Deucher <alexander.deucher@amd.com>
Mon, 17 Nov 2014 20:08:17 +0000 (17 15:08 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 27 Jan 2015 16:18:54 +0000 (27 08:18 -0800)
treefc02560391422965e3dafe9a0d5671d5fc93af37
parent4c65add00e3f8e7b2db00588db7d8f3cc68853e2
drm/radeon: work around a hw bug in MGCG on CIK

commit 4bb62c95a7e781a238b2ab374f34b1bf91e01ddc upstream.

Always need to set bit 0 of RLC_CGTT_MGCG_OVERRIDE
to avoid unreliable doorbell updates in some cases.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/radeon/cik.c