Enable the NULL packet during the Vsync

---
 drivers/gpu/drm/i915/intel_hdmi.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: linux-2.6.32-rc3/drivers/gpu/drm/i915/intel_hdmi.c
===================================================================
--- linux-2.6.32-rc3.orig/drivers/gpu/drm/i915/intel_hdmi.c	2009-09-10 06:13:59.000000000 +0800
+++ linux-2.6.32-rc3/drivers/gpu/drm/i915/intel_hdmi.c	2009-10-12 14:51:37.000000000 +0800
@@ -59,8 +59,10 @@
 		SDVO_VSYNC_ACTIVE_HIGH |
 		SDVO_HSYNC_ACTIVE_HIGH;
 
-	if (hdmi_priv->has_hdmi_sink)
+	if (hdmi_priv->has_hdmi_sink) {
 		sdvox |= SDVO_AUDIO_ENABLE;
+		sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
+	}
 
 	if (intel_crtc->pipe == 1)
 		sdvox |= SDVO_PIPE_B_SELECT;