diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index afa56e9..0aed724 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -439,7 +439,7 @@
 		len = sg_dma_len(sg) >> PAGE_SHIFT;
 		for (m = 0; m < len; m++) {
 			addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
-			gtt_entries[i] = pte_encode(dev, addr, level);
+			iowrite32(pte_encode(dev, addr, level), &gtt_entries[i]);
 			i++;
 		}
 	}