drm/radeon/kms: Only restrict BO to visible VRAM size when pinning to VRAM.

This prevented radeon.test=1 from testing transfers from/to GTT beyond the
visible VRAM size.
Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/radeon_object.c

@@ -185,8 +185,10 @@ int radeon_bo_pin(struct radeon_bo *bo, u32 domain, u64 *gpu_addr)
 		return 0;
 	}
 	radeon_ttm_placement_from_domain(bo, domain);
-	/* force to pin into visible video ram */
-	bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
+	if (domain == RADEON_GEM_DOMAIN_VRAM) {
+		/* force to pin into visible video ram */
+		bo->placement.lpfn = bo->rdev->mc.visible_vram_size >> PAGE_SHIFT;
+	}
 	for (i = 0; i < bo->placement.num_placement; i++)
 		bo->placements[i] |= TTM_PL_FLAG_NO_EVICT;
 	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);