[PATCH v2 2/3] ASoC: codecs: Add support for the Renesas IDT821034 codec

[Mark Brown]

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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