ALSA: hda - Fix mute-LED GPIO initialization for IDT codecs

The IDT codecs initializes the GPIO setup for mute LEDs via
snd_hda_sync_vmaster_hook().  This works in most cases except for the
very first call, which is called before PCM and control creations.
Thus before Master switch is set manually via alsactl, the mute LED
may show the wrong state, depending on the polarity.

Now it's fixed by calling the LED-status update function manually when
no vmaster is set yet.

Cc: <stable@vger.kernel.org> [v3.4+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index a760c30f1caaf1babf41f81c2fbec0055af2be1b..94040ccf8e8fbd954833a6302ed37ab60a34f1ed 100644 (file)
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -4420,7 +4420,12 @@ static int stac92xx_init(struct hda_codec *codec)
        snd_hda_jack_report_sync(codec);
 
        /* sync mute LED */
-       snd_hda_sync_vmaster_hook(&spec->vmaster_mute);
+       if (spec->gpio_led) {
+               if (spec->vmaster_mute.hook)
+                       snd_hda_sync_vmaster_hook(&spec->vmaster_mute);
+               else /* the very first init call doesn't have vmaster yet */
+                       stac92xx_update_led_status(codec, false);
+       }
 
        /* sync the power-map */
        if (spec->num_pwrs)