ALSA: hda - do not add non-existing Mic boost controls

If the input node does not have any volume capable input amp,
don't add such a control.

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

diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index c33e019617cdd4c137a3c53ae85b2edbe26a5c87..05dfeb7bfc970fdbe913b5c89a8d7ca8a68dfa15 100644 (file)
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -2826,6 +2826,9 @@ static int parse_mic_boost(struct hda_codec *codec)
                        struct nid_path *path;
                        unsigned int val;
 
+                       if (!nid_has_volume(codec, nid, HDA_INPUT))
+                               continue;
+
                        label = hda_get_autocfg_input_label(codec, cfg, i);
                        if (prev_label && !strcmp(label, prev_label))
                                type_idx++;