[alsa-devel] [PATCH] hda_codec: restore control element values during resume

[Daniel Drake]

Takashi Iwai wrote:
> The controls should have been restored by snd_hda_resume_ctls() call
> in stac92xx_resume(), so basically your patch must be suprefluous.
> Could you check whether this gets called?

I did see the snd_hda_resume_ctls() code but noted it was resuming from 
snd_kcontrol_new structures rather than snd_kcontrol instances. I'm 
still not sure what the difference is here, are they supposed to 
'mirror' each other?

Anyway, it turns out that snd_hda_resume_ctls() doesn't get executed.

stac92xx_resume() has this code:

	for (i = 0; i < spec->num_mixers; i++)
		snd_hda_resume_ctls(codec, spec->mixers[i]);

On my system, spec->num_mixers is 0.

Daniel