diff --git a/drivers/gpu/drm/gma500/gtt.c b/drivers/gpu/drm/gma500/gtt.c
index c6465b40090f788c28153c686fd96656c67a7d2e..db2e823e895102e44b62e51cc5ff633edc8f578b 100644
--- a/drivers/gpu/drm/gma500/gtt.c
+++ b/drivers/gpu/drm/gma500/gtt.c
@@ -93,7 +93,7 @@ static int psb_gtt_insert(struct drm_device *dev, struct gtt_range *r)
 	pages = r->pages;
 
 	/* Make sure changes are visible to the GPU */
-	set_pages_array_uc(pages, r->npage);
+	set_pages_array_wc(pages, r->npage);
 
 	/* Write our page entries into the GTT itself */
 	for (i = r->roll; i < r->npage; i++) {