diff --git a/drivers/gpu/drm/gma500/psb_drv.h b/drivers/gpu/drm/gma500/psb_drv.h
index 5c5c3d0..9dc4476 100644
--- a/drivers/gpu/drm/gma500/psb_drv.h
+++ b/drivers/gpu/drm/gma500/psb_drv.h
@@ -507,7 +507,7 @@
 	/* GTT Memory manager */
 	struct psb_gtt_mm *gtt_mm;
 	struct page *scratch_page;
-	u32 *gtt_map;
+	u32 __iomem *gtt_map;
 	uint32_t stolen_base;
 	void *vram_addr;
 	unsigned long vram_stolen_size;