ALSA: hda - Avoid invalid "Independent HP" control for VIA codecs

Some VIA codecs have no multiple source selection for headphone pins,
thus it's useless (and wrong) to create "Independent HP" control on them.

This patch adds the check of connections to skip the control in such a
case.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_via.c

@@ -1215,14 +1215,13 @@ static struct snd_kcontrol_new via_hp_mixer[2] = {
 	},
 };
 
-static int via_hp_build(struct via_spec *spec)
+static int via_hp_build(struct hda_codec *codec)
 {
+	struct via_spec *spec = codec->spec;
 	struct snd_kcontrol_new *knew;
 	hda_nid_t nid;
-
-	knew = via_clone_control(spec, &via_hp_mixer[0]);
-	if (knew == NULL)
-		return -ENOMEM;
+	int nums;
+	hda_nid_t conn[HDA_MAX_CONNECTIONS];
 
 	switch (spec->codec_type) {
 	case VT1718S:
@@ -1239,6 +1238,14 @@ static int via_hp_build(struct via_spec *spec)
 		break;
 	}
 
+	nums = snd_hda_get_connections(codec, nid, conn, HDA_MAX_CONNECTIONS);
+	if (nums <= 1)
+		return 0;
+
+	knew = via_clone_control(spec, &via_hp_mixer[0]);
+	if (knew == NULL)
+		return -ENOMEM;
+
 	knew->subdevice = HDA_SUBDEV_NID_FLAG | nid;
 	knew->private_value = nid;
 
@@ -2561,7 +2568,7 @@ static int vt1708_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 	return 1;
@@ -3087,7 +3094,7 @@ static int vt1709_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 	return 1;
@@ -3654,7 +3661,7 @@ static int vt1708B_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 	return 1;
@@ -4140,7 +4147,7 @@ static int vt1708S_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 	return 1;
@@ -4510,7 +4517,7 @@ static int vt1702_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	return 1;
 }
@@ -4930,7 +4937,7 @@ static int vt1718S_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 
@@ -5425,7 +5432,7 @@ static int vt1716S_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	via_smart51_build(spec);
 
@@ -5781,7 +5788,7 @@ static int vt2002P_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	return 1;
 }
@@ -6000,12 +6007,12 @@ static int vt1812_auto_create_multi_out_ctls(struct via_spec *spec,
 
 	/* Line-Out: PortE */
 	err = via_add_control(spec, VIA_CTL_WIDGET_VOL,
-			      "Master Front Playback Volume",
+			      "Front Playback Volume",
 			      HDA_COMPOSE_AMP_VAL(0x8, 3, 0, HDA_OUTPUT));
 	if (err < 0)
 		return err;
 	err = via_add_control(spec, VIA_CTL_WIDGET_BIND_PIN_MUTE,
-			      "Master Front Playback Switch",
+			      "Front Playback Switch",
 			      HDA_COMPOSE_AMP_VAL(0x28, 3, 0, HDA_OUTPUT));
 	if (err < 0)
 		return err;
@@ -6130,7 +6137,7 @@ static int vt1812_parse_auto_config(struct hda_codec *codec)
 	spec->input_mux = &spec->private_imux[0];
 
 	if (spec->hp_mux)
-		via_hp_build(spec);
+		via_hp_build(codec);
 
 	return 1;
 }