diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 4448ab6..77dc6b9 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -854,7 +854,7 @@ static void haswell_verify_D0(struct hda_codec *codec,
 	 * converters are in correct power state */
 	if (!snd_hda_check_power_state(codec, cvt_nid, AC_PWRST_D0))
 		snd_hda_codec_write(codec, cvt_nid, 0, AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
-
+	msleep(40);
 	if (!snd_hda_check_power_state(codec, nid, AC_PWRST_D0)) {
 		snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
 				    AC_PWRST_D0);