[alsa-devel] [PATCH 2/8] ALSA: VIA HDA: Fix stereo mixer recording no sound issue

[Takashi Iwai]

At Tue, 22 Mar 2011 14:29:09 +0800,
Lydia Wang wrote:
> 
> From: Lydia Wang <lydiawang at viatech.com.cn>
> Subject: ALSA: VIA HDA: Fix stereo mixer recording no sound issue.
> 
> Modify function via_mux_enum_put() to fix stereo mixer recording 
> no sound issue.
> 
> Signed-off-by: Lydia Wang <lydiawang at viatech.com.cn>

Well, this kind of small but important fixes are basically independent
from the previous power-management rewrite patch.  So, these should be
applied before the new pm patch, so that they can be picked up more
easily for stable kernel.  This is what I requested in the previous
mail.

Of course, it assumes that the fix is applicable individually.
For example, this patch can work even without pm-rewrite patch when
you modify the patch content to fit with the old pm funciton call,
right?


thanks,

Takashi

> ---
>  sound/pci/hda/patch_via.c |    9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> --- a/sound/pci/hda/patch_via.c
> +++ b/sound/pci/hda/patch_via.c
> @@ -633,6 +633,7 @@
>  	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
>  	struct via_spec *spec = codec->spec;
>  	unsigned int adc_idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
> +	int ret;
>  
>  	if (!spec->mux_nids[adc_idx])
>  		return -EINVAL;
> @@ -641,12 +642,14 @@
>  			       AC_VERB_GET_POWER_STATE, 0x00) != AC_PWRST_D0)
>  		snd_hda_codec_write(codec, spec->mux_nids[adc_idx], 0,
>  				    AC_VERB_SET_POWER_STATE, AC_PWRST_D0);
> -	/* update jack power state */
> -	set_widgets_power_state(codec);
>  
> -	return snd_hda_input_mux_put(codec, spec->input_mux, ucontrol,
> +	ret = snd_hda_input_mux_put(codec, spec->input_mux, ucontrol,
>  				     spec->mux_nids[adc_idx],
>  				     &spec->cur_mux[adc_idx]);
> +	/* update jack power state */
> +	set_widgets_power_state(codec);
> +
> +	return ret;
>  }
>  
>  static int via_independent_hp_info(struct snd_kcontrol *kcontrol,
>