diff --git a/[refs] b/[refs]
index ba827ac8aea3..0c76a7e213c3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: df6eedc81d43c2245885c6baeb28d488c8a4dea4
+refs/heads/master: d5570a72439b2d972c915208266440c2f330d03d
diff --git a/trunk/drivers/gpu/drm/i915/intel_pm.c b/trunk/drivers/gpu/drm/i915/intel_pm.c
index 36c64091bc90..4e86037ae6b4 100644
--- a/trunk/drivers/gpu/drm/i915/intel_pm.c
+++ b/trunk/drivers/gpu/drm/i915/intel_pm.c
@@ -2338,6 +2338,8 @@ void gen6_set_rps(struct drm_device *dev, u8 val)
 	 */
 	I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, limits);
 
+	POSTING_READ(GEN6_RPNSWREQ);
+
 	dev_priv->rps.cur_delay = val;
 
 	trace_intel_gpu_freq_change(val * 50);