1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 9e4240b3bf0b..f454c9a5e7f2 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -57,7 +57,9 @@ void rs400_gart_adjust_size(struct radeon_device *rdev)
         }
         if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480) {
                 /* FIXME: RS400 & RS480 seems to have issue with GART size
-                 * if 4G of system memory (needs more testing) */
+                 * if 4G of system memory (needs more testing)
+                 */
+                /* XXX is this still an issue with proper alignment? */
                 rdev->mc.gtt_size = 32 * 1024 * 1024;
                 DRM_ERROR("Forcing to 32M GART size (because of ASIC bug ?)\n");
         }
@@ -263,6 +265,7 @@ void rs400_mc_init(struct radeon_device *rdev)
         r100_vram_init_sizes(rdev);
         base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
         radeon_vram_location(rdev, &rdev->mc, base);
+        rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
         radeon_gtt_location(rdev, &rdev->mc);
         radeon_update_bandwidth_info(rdev);
 }