diff --git a/[refs] b/[refs]
index 80a5ce6acc45..b43ce81d4b22 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8ab4397640de51f4a93845b09270ad717244ccb3
+refs/heads/master: 5c9664d75a65adcdb9763a6df1da1d8d3f417c0c
diff --git a/trunk/drivers/gpu/drm/i915/intel_pm.c b/trunk/drivers/gpu/drm/i915/intel_pm.c
index aef23641fbcc..871bfe49b913 100644
--- a/trunk/drivers/gpu/drm/i915/intel_pm.c
+++ b/trunk/drivers/gpu/drm/i915/intel_pm.c
@@ -3695,6 +3695,10 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
 	I915_WRITE(GEN7_ROW_CHICKEN2,
 		   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
 
+	/* WaForceL3Serialization */
+	I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) &
+		   ~L3SQ_URB_READ_CAM_MATCH_DISABLE);
+
 	/* This is required by WaCatErrorRejectionIssue */
 	I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
 		   I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |