On Tue, Oct 20, 2020 at 11:04:57AM +0200, Olivier Moysan wrote:

> +static int mclk_event(struct snd_soc_dapm_widget *w,
> +                   struct snd_kcontrol *kcontrol, int event)
> +{
> +     struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm);
> +     struct cs42l51_private *cs42l51 = snd_soc_component_get_drvdata(comp);
> +
> +     if (SND_SOC_DAPM_EVENT_ON(event))
> +             return clk_prepare_enable(cs42l51->mclk_handle);
> +
> +     /* Delay mclk shutdown to fulfill power-down sequence requirements */
> +     msleep(20);
> +     clk_disable_unprepare(cs42l51->mclk_handle);

Why not use a switch statement here?  The control flow is a bit odd with
what's basically an if/else done with only one branch in the if - this
isn't idiomatic for DAPM stuff apart from anything else.

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