ALSA: HDA: Set position fix to LPIB for an Atom/Poulsbo based device

commit 1c89fe3b51a2f8068f2f9faa9c48584151416583 upstream.

For the Asus 1101HA, reporting position by reading the DMA position
buffer map seems unstable and often wrong. The reporter says that
position_fix=LPIB works much better (although not 100%, but this is
probably due to other issues).

The controller chip is an Intel Poulsbo 8086:811b (rev 07) controller,
and complete alsa-info is available here:
https://launchpadlibrarian.net/86691768/alsa-info.txt.1TNwyE5Ea7

BugLink: http://bugs.launchpad.net/bugs/825709
Tested-by: Stefano Lodi
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index f6659751f0c95a8b5105aecf07f6e461e3467837..82b7c88e306e4bf6bdb0b7fac18683ae5d6b06f6 100644 (file)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2375,6 +2375,7 @@ static struct snd_pci_quirk position_fix_list[] __devinitdata = {
        SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
        SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
        SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS 1101HA", POS_FIX_LPIB),
        SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
        SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
        SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),