ALSA: hda - Fix the check of loopback-mixer element index in patch_via.c

Fix the check of the multiple loopback-mixer, which gave sometimes
a wrong index assigned to an element even for different names, e.g.
Mic and Front Mic.  Now check the label properly for avoid duplication.

Reported-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 785f7f5022a421e15c0d745028d7df691ed1f33e..b67a5768a9dece7ca22b5a9b6725d2146e239fd0 100644 (file)
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -1875,6 +1875,7 @@ static int via_auto_create_analog_input_ctls(struct hda_codec *codec,
        struct via_spec *spec = codec->spec;
        struct hda_input_mux *imux = &spec->private_imux[0];
        int i, j, err, idx, idx2, type, type_idx = 0;
+       const char *prev_label = NULL;
        hda_nid_t cap_nid;
        hda_nid_t pin_idxs[8];
        int num_idxs;
@@ -1908,11 +1909,12 @@ static int via_auto_create_analog_input_ctls(struct hda_codec *codec,
                                break;
                if (idx >= num_idxs)
                        continue;
-               if (i > 0 && type == cfg->inputs[i - 1].type)
+               label = hda_get_autocfg_input_label(codec, cfg, i);
+               if (prev_label && !strcmp(label, prev_label))
                        type_idx++;
                else
                        type_idx = 0;
-               label = hda_get_autocfg_input_label(codec, cfg, i);
+               prev_label = label;
                idx2 = get_connection_index(codec, spec->aa_mix_nid,
                                            pin_idxs[idx]);
                if (idx2 >= 0) {