linux-kernel - Re: [PATCH 24/25] ASoC: wm8994: remove unnecessary CONFIG_PM

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Date:   Thu, 29 Oct 2020 15:55:03 +0000
From:   Charles Keepax <ckeepax@...nsource.cirrus.com>
To:     Coiby Xu <coiby.xu@...il.com>
CC:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "open list:WOLFSON MICROELECTRONICS DRIVERS" 
        <patches@...nsource.cirrus.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 24/25] ASoC: wm8994: remove unnecessary CONFIG_PM_SLEEP

On Thu, Oct 29, 2020 at 03:43:00PM +0800, Coiby Xu wrote:
> SET_SYSTEM_SLEEP_PM_OPS has already took good care of CONFIG_PM_CONFIG.
> 
> Signed-off-by: Coiby Xu <coiby.xu@...il.com>
> ---
>  sound/soc/codecs/wm8994.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
> index fc9ea198ac79..9294ad06f76d 100644
> --- a/sound/soc/codecs/wm8994.c
> +++ b/sound/soc/codecs/wm8994.c
> @@ -4656,7 +4656,6 @@ static int wm8994_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int wm8994_suspend(struct device *dev)
>  {
>  	struct wm8994_priv *wm8994 = dev_get_drvdata(dev);
> @@ -4681,7 +4680,6 @@ static int wm8994_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
>  static const struct dev_pm_ops wm8994_pm_ops = {
>  	SET_SYSTEM_SLEEP_PM_OPS(wm8994_suspend, wm8994_resume)

Not sure this really makes sense, what is going to stop the
unused function warning if PM isn't configured?

Thanks,
Charles