diff --git a/[refs] b/[refs]
index ddf3355a4ef0..1226aade79b0 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 934d6086ea6b165af9218e8dcc2a9e69e1850743
+refs/heads/master: edef7e685da05c13cce50c0126189c80fe2c8f71
diff --git a/trunk/drivers/char/agp/intel-gtt.c b/trunk/drivers/char/agp/intel-gtt.c
index 7fa655ac24d8..e01f5eaaec82 100644
--- a/trunk/drivers/char/agp/intel-gtt.c
+++ b/trunk/drivers/char/agp/intel-gtt.c
@@ -666,9 +666,14 @@ static int intel_gtt_init(void)
 
 	gtt_map_size = intel_private.base.gtt_total_entries * 4;
 
-	intel_private.gtt = ioremap(intel_private.gtt_bus_addr,
-				    gtt_map_size);
-	if (!intel_private.gtt) {
+	intel_private.gtt = NULL;
+	if (INTEL_GTT_GEN < 6)
+		intel_private.gtt = ioremap_wc(intel_private.gtt_bus_addr,
+					       gtt_map_size);
+	if (intel_private.gtt == NULL)
+		intel_private.gtt = ioremap(intel_private.gtt_bus_addr,
+					    gtt_map_size);
+	if (intel_private.gtt == NULL) {
 		intel_private.driver->cleanup();
 		iounmap(intel_private.registers);
 		return -ENOMEM;