On Fri, Jan 20, 2023 at 10:50:35AM +0100, Herve Codina wrote:
> +static int idt821034_kctrl_gain_put(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value;
> + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> + struct idt821034 *idt821034 = snd_soc_component_get_drvdata(component);
> + struct idt821034_amp *amp;
> +
> + amp->gain = val;
> + ret = 0;
> +end:
> + mutex_unlock(&idt821034->mutex);
> + return ret;
_put() methods should return 1 if the value changed to generate
events - if you use the mixer-test selftest it'll spot this and
other issues for you.
Otherwise this looks fine.
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