[Linux-stm32] [PATCH 2/3] ASoC: stm32: dfsdm: add pm_runtime support for audio

[Mark Brown]

On Thu, Nov 18, 2021 at 10:00:34AM +0100, Olivier Moysan wrote:

>  	ret = snd_soc_add_component(component, NULL, 0);
> -	if (ret < 0)
> +	if (ret < 0) {
>  		dev_err(&pdev->dev, "%s: Failed to register PCM platform\n",
>  			__func__);
> +		return ret;
> +	}
>  
> -	return ret;
> +	pm_runtime_enable(&pdev->dev);

Enabling runtime PM after registering the component may potentially lead
to a race where something manages to go in and starts using the device
including what should be runtime PM stuff.  That'd lead to a reference
not being taken that should be.  It's unlikely to actually happen but
it's better to be safe.
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