[Saucy][SRU][PATCH]ALSA : hda - not use assigned converters for all unused pins

Zhang, Xiong Y xiong.y.zhang at intel.com
Wed Oct 23 02:48:59 UTC 2013

BugLink: https://bugs.launchpad.net/dell/+bug/1154441

commit f82d7d16aee5eb4c2315ba11a90f2f3c662d45b8
Author: Mengdong Lin <mengdong.lin at intel.com>
Date:   Sat Sep 21 20:34:45 2013 -0400

    ALSA : hda - not use assigned converters for all unused pins

    BIOS can mark a pin as "no physical connection" if the port is used by an
    integrated display which is not audio capable. And audio driver will overlook
    such pins.

    On Haswell, such a disconneted pin will keep muted and connected to the 1st
    converter by default. But if the 1st convertor is assigned to a connected pin
    for audio streaming. The muted disconnected pin can make the connected pin
    no sound output.

    So this patch avoids using assigned converters for all unused pins for Haswell,
    including the disconected pins.

    Signed-off-by: Mengdong Lin <mengdong.lin at intel.com>
    Reviewed-by: David Henningsson <david.henningsson at canonical.com>
    Signed-off-by: Takashi Iwai tiwai at suse.de<mailto:tiwai at suse.de>

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