ALSA: hda - VIA: Fix notify_aa_path_ctls() invalid issue.

In notify_aa_path_ctls(), adds 'rear mic' item and confirms the A-A
path control existing before notifying card that the A-A path volume
is muted if smart5.1 is enabled.

Signed-off-by: Lydia Wang <lydiawang@viatech.com.cn>
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 1371b57c11e823209336a3a2f86b6274e550a0b9..0997031c48d228e3e0a2af8d9b1fde55ab54ed8d 100644 (file)
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -1292,14 +1292,18 @@ static void notify_aa_path_ctls(struct hda_codec *codec)
 {
        int i;
        struct snd_ctl_elem_id id;
-       const char *labels[] = {"Mic", "Front Mic", "Line"};
+       const char *labels[] = {"Mic", "Front Mic", "Line", "Rear Mic"};
+       struct snd_kcontrol *ctl;
 
        memset(&id, 0, sizeof(id));
        id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
        for (i = 0; i < ARRAY_SIZE(labels); i++) {
                sprintf(id.name, "%s Playback Volume", labels[i]);
-               snd_ctl_notify(codec->bus->card, SNDRV_CTL_EVENT_MASK_VALUE,
-                              &id);
+               ctl = snd_hda_find_mixer_ctl(codec, id.name);
+               if (ctl)
+                       snd_ctl_notify(codec->bus->card,
+                                       SNDRV_CTL_EVENT_MASK_VALUE,
+                                       &ctl->id);
        }
 }