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path: root/drivers/gpu/drm/radeon
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Diffstat (limited to 'drivers/gpu/drm/radeon')
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 846eeb8..79b08b4 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -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;