shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-01 00:36:40 +09:00
Code Issues Packages Projects Releases Wiki Activity

drm/radeon/kms: disable writeback on pre-R300 asics

Browse Source 
commit 28eebb703e upstream.

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>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alex Deucher
2012-01-03 09:48:38 -05:00
committed by Greg Kroah-Hartman
parent d21e9677f8
commit 7ca755c00a
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/radeon/radeon_device.c
View File

@@ -224,8 +224,11 @@ int radeon_wb_init(struct radeon_device *rdev)
if (radeon_no_wb == 1)
rdev->wb.enabled = false;
else {
/* often unreliable on AGP */
if (rdev->flags & RADEON_IS_AGP) {
/* often unreliable on AGP */
rdev->wb.enabled = false;
} else if (rdev->family < CHIP_R300) {
/* often unreliable on pre-r300 */
rdev->wb.enabled = false;
} else {
rdev->wb.enabled = true;