diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 994713cb07bc..4751eab69ab7 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1064,6 +1064,7 @@ static void hdmi_pin_setup_infoframe(struct hda_codec *codec,
 {
 	union audio_infoframe ai;
 
+	memset(&ai, 0, sizeof(ai));
 	if (conn_type == 0) { /* HDMI */
 		struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi;