ALSA: hda - Fix silent output regression with ALC861

commit 43dea228a3ba5463392281535dfb3d3fe56f4c2c upstream.

The 3.1 kernel has a regression for ALC861 codec where no sound output
is heard with the default setup.  It's because the amps in DACs aren't
properly unmuted while the output mixers are assigned only to pins.

This patch fixes the missing initialization of DACs when no mixer is
assigned to them.

Tested-by: Andrea Iob <andrea_iob@yahoo.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index d0494bd0558bb60d146427f60a82e571f48030c6..be79c9f75c0998a2f935194b6a9b135c3649aefb 100644 (file)
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -3077,6 +3077,12 @@ static void alc_auto_set_output_and_unmute(struct hda_codec *codec,
        if (nid)
                snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_AMP_GAIN_MUTE,
                                    AMP_OUT_ZERO);
+
+       /* unmute DAC if it's not assigned to a mixer */
+       nid = alc_look_for_out_mute_nid(codec, pin, dac);
+       if (nid == mix && nid_has_mute(codec, dac, HDA_OUTPUT))
+               snd_hda_codec_write(codec, dac, 0, AC_VERB_SET_AMP_GAIN_MUTE,
+                                   AMP_OUT_ZERO);
 }
 
 static void alc_auto_init_multi_out(struct hda_codec *codec)