[alsa-devel] [PATCH] ALSA: HDA: Fix mic initialization in VIA auto parser (was: pci/hda/patch_via.c - broken between 2.6.36 and 2.6.37 (bisected))

[Raymond Yau]

2011/2/22 Wolfgang Scheicher <wolfgang.scheicher at gmail.com>

> David Henningsson wrote:
>
> > On 2011-02-21 09:43, Mark Goldstein wrote:
> >> [...]
> >>
> >> I've never dealt with submitting patches, so probably it'll be better
> >> (and definitely faster) if you could do it.
> >>
> >> Thank you,
> >
> > Ok, here comes the patch!
>
> Tested, and Microphone now works! Thanks a lot to everyone involved.
> Good job so far!
>
> On a side note:
> One still must not touch "Smart 5.1" in alsamixer, because if one does,
> mixer will still crash and (sound)system will hang until pc is rebooted.
> I can't tell how related this two problems are, but as far as i can tell
> they both appeared with the same commit
> ( 7b315bb4980448250c80a7464c256b54d546cb26 ) i did track down on sunday.
>
> Wolfgang Scheicher
>

This will disable the creation of smart51 switch for those non 3-jacks model

static int via_smart51_build(struct via_spec *spec)
{
    struct snd_kcontrol_new *knew;
    const struct auto_pin_cfg *cfg = &spec->autocfg;
    hda_nid_t nid;
    int i;
+        if (spec->autocfg.line_outs != 1) {
+        spec->smart51_enabled=0;
+       return 0;
+     }