diff --git a/[refs] b/[refs]
index 93da883ab9f4..63d2445db00b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: de3f440f8c9922afe8770dd16c84f1c87d779b59
+refs/heads/master: 643ced9b0b4810b5725910667604f1a373f30f2f
diff --git a/trunk/drivers/gpu/drm/i915/i915_irq.c b/trunk/drivers/gpu/drm/i915/i915_irq.c
index e7472d82132a..fcd87ad75fec 100644
--- a/trunk/drivers/gpu/drm/i915/i915_irq.c
+++ b/trunk/drivers/gpu/drm/i915/i915_irq.c
@@ -1022,14 +1022,13 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 	/* enable kind of interrupts always enabled */
-	u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT |
-			   DE_PIPEA_VBLANK | DE_PIPEB_VBLANK;
+	u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT;
 	u32 render_mask = GT_USER_INTERRUPT;
 	u32 hotplug_mask = SDE_CRT_HOTPLUG | SDE_PORTB_HOTPLUG |
 			   SDE_PORTC_HOTPLUG | SDE_PORTD_HOTPLUG;
 
 	dev_priv->irq_mask_reg = ~display_mask;
-	dev_priv->de_irq_enable_reg = display_mask;
+	dev_priv->de_irq_enable_reg = display_mask | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK;
 
 	/* should always can generate irq */
 	I915_WRITE(DEIIR, I915_READ(DEIIR));