drm/radeon/kms: disable writeback on pre-R300 asics
authorAlex Deucher <alexander.deucher@amd.com>
Tue, 3 Jan 2012 14:48:38 +0000 (09:48 -0500)
committerDave Airlie <airlied@redhat.com>
Thu, 5 Jan 2012 10:07:10 +0000 (10:07 +0000)
commit28eebb703e28bc455ba704adb1026f76649b768c
treec6e22d33e869d42d7d441ddc44c7e4bf2008d28b
parentc1341e52802ab401be7addb55408e23307f9074b
drm/radeon/kms: disable writeback on pre-R300 asics

We often end up missing fences on older asics with
writeback enabled which leads to delays in the userspace
accel code, so just disable it by default on those asics.

Reported-by: Helge Deller <deller@gmx.de>
Reported-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/radeon/radeon_device.c