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    SubjectRe: Regression in 3.0-git after commit c82693db52beced0419cecf09a3c81adfe95a544 - sound does not work
    At Wed, 03 Aug 2011 16:41:08 -0500,
    Larry Finger wrote:
    >
    > In the latest git pull of 3.0-git from Linus's tree, the sound on my HP laptop
    > does not work. This problem was bisected to the commit in the subject.
    >
    > The lspci output for my sound device is:
    >
    > 00:07.0 Audio device [0403]: nVidia Corporation MCP67 High Definition Audio
    > [10de:055c] (rev a1)
    > Subsystem: Hewlett-Packard Company Device [103c:30d6]
    > Kernel driver in use: snd_hda_intel
    >
    > I further isolated the problem to the following hunk:
    >
    > diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
    > index 6e90b6b..4ca880b 100644
    > --- a/sound/pci/hda/patch_conexant.c
    > +++ b/sound/pci/hda/patch_conexant.c
    > @@ -1994,10 +1990,8 @@ static int patch_cxt5051(struct hda_codec *codec)
    > board_config = snd_hda_check_board_config(codec, CXT5051_MODELS,
    > cxt5051_models,
    > cxt5051_cfg_tbl);
    > -#if 0 /* use the old method just for safety */
    > if (board_config < 0)
    > - board_config = CXT5051_AUTO;
    > -#endif
    > + board_config = CXT5051_AUTO; /* model=auto as default */
    > if (board_config == CXT5051_AUTO)
    > return patch_conexant_auto(codec);
    >
    > In my case, snd_hda_check_board_config() returns -1. Thus, the new code returns
    > the value of patch_conexant_auto(), whereas the original version fell through to
    > the setup code below. Clearly, this is needed for my device.

    And reverting the above fixes your problem, right?
    Then please give alsa-info.sh outputs on both working and non-working
    kernels (run with --no-upload option).


    thanks,

    Takashi


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