diff --git a/[refs] b/[refs]
index 2c6665b3d5d6..afb299cb635b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 913d8d110078788c14812dce8bb62c37946821d2
+refs/heads/master: 5ddb954b9ee50824977d2931e0ff58b3050b337d
diff --git a/trunk/drivers/gpu/drm/i915/intel_display.c b/trunk/drivers/gpu/drm/i915/intel_display.c
index 0bf683dd512c..2a32a7b60c96 100644
--- a/trunk/drivers/gpu/drm/i915/intel_display.c
+++ b/trunk/drivers/gpu/drm/i915/intel_display.c
@@ -1665,6 +1665,7 @@ static void ironlake_enable_pll_edp (struct drm_crtc *crtc)
 	dpa_ctl = I915_READ(DP_A);
 	dpa_ctl |= DP_PLL_ENABLE;
 	I915_WRITE(DP_A, dpa_ctl);
+	POSTING_READ(DP_A);
 	udelay(200);
 }