ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31

BugLink: https://bugs.launchpad.net/bugs/619439
This ThinkPad model needs External Amplifier muted for audible playback,
so set the inv_eapd quirk for it.

Reported-and-tested-by: Dennis Bell <dennis.bell@parkerg.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 6433e65c9507d20a65be6c0b14af1275c30e0c40..46774924957643874171c1c4e0dfd9a20672d2f3 100644 (file)
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -1774,6 +1774,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
                .name = "HP/Compaq nx7010",
                .type = AC97_TUNE_MUTE_LED
         },
+       {
+               .subvendor = 0x1014,
+               .subdevice = 0x0534,
+               .name = "ThinkPad X31",
+               .type = AC97_TUNE_INV_EAPD
+       },
        {
                .subvendor = 0x1014,
                .subdevice = 0x1f00,