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ALSA: hda/via - don't report presence on HPs with no presence support 

If headphone jack can't detect plug presence, and we have the jack in
the jack table, snd_hda_jack_detect will return the plug as always
present (as it'll be considered as a phantom jack). The problem is that
when this happens, line out pins will always be disabled, resulting in
no sound if there are no headphones connected.

This was reported as a no sound problem after suspend on
http://bugs.launchpad.net/bugs/1052499, since the bug doesn't manifests
on first initialization before the phantom jack is added, but on resume
we reexecute the initialization code, and via_hp_automute starts
reporting HP always present with the jack now on the table.

BugLink: https://bugs.launchpad.net/bugs/1052499
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Cc: <stable@vger.kernel.org> [v3.6+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Herton Ronaldo Krzesinski 2012-09-21 20:45:19 -03:00 committed by Takashi Iwai
parent 148728f1f7
commit cf55e90451
1 changed files with 2 additions and 1 deletions
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3
sound/pci/hda/patch_via.c
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@ -1672,7 +1672,8 @@ static void via_hp_automute(struct hda_codec *codec)
struct via_spec *spec = codec->spec;
if (!spec->hp_independent_mode && spec->autocfg.hp_pins[0] &&
(spec->codec_type != VT1708 || spec->vt1708_jack_detect))
(spec->codec_type != VT1708 || spec->vt1708_jack_detect) &&
is_jack_detectable(codec, spec->autocfg.hp_pins[0]))
present = snd_hda_jack_detect(codec, spec->autocfg.hp_pins[0]);
if (spec->smart51_enabled)