[PATCH 3/4] dmaengine: at_xdmac: use __maybe_unused for pm functions

[Tudor.Ambarus at microchip.com]

On 10/7/21 2:12 PM, Claudiu Beznea wrote:
> Use __maybe_unused for pm functions.

Explaining why would be nice. E.g. avoiding ifdefs throughout the code,
and stop defining atmel_xdmac_prepare as NULL.

> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>

Reviewed-by: Tudor Ambarus <tudor.ambarus at microchip.com>

> ---
>  drivers/dma/at_xdmac.c | 12 +++---------
>  1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
> index e18abbd56fb5..12371396fcc0 100644
> --- a/drivers/dma/at_xdmac.c
> +++ b/drivers/dma/at_xdmac.c
> @@ -1950,8 +1950,7 @@ static void at_xdmac_axi_config(struct platform_device *pdev)
>  	}
>  }
>  
> -#ifdef CONFIG_PM
> -static int atmel_xdmac_prepare(struct device *dev)
> +static int __maybe_unused atmel_xdmac_prepare(struct device *dev)
>  {
>  	struct at_xdmac		*atxdmac = dev_get_drvdata(dev);
>  	struct dma_chan		*chan, *_chan;
> @@ -1965,12 +1964,8 @@ static int atmel_xdmac_prepare(struct device *dev)
>  	}
>  	return 0;
>  }
> -#else
> -#	define atmel_xdmac_prepare NULL
> -#endif
>  
> -#ifdef CONFIG_PM_SLEEP
> -static int atmel_xdmac_suspend(struct device *dev)
> +static int __maybe_unused atmel_xdmac_suspend(struct device *dev)
>  {
>  	struct at_xdmac		*atxdmac = dev_get_drvdata(dev);
>  	struct dma_chan		*chan, *_chan;
> @@ -1994,7 +1989,7 @@ static int atmel_xdmac_suspend(struct device *dev)
>  	return 0;
>  }
>  
> -static int atmel_xdmac_resume(struct device *dev)
> +static int __maybe_unused atmel_xdmac_resume(struct device *dev)
>  {
>  	struct at_xdmac		*atxdmac = dev_get_drvdata(dev);
>  	struct at_xdmac_chan	*atchan;
> @@ -2032,7 +2027,6 @@ static int atmel_xdmac_resume(struct device *dev)
>  	}
>  	return 0;
>  }
> -#endif /* CONFIG_PM_SLEEP */
>  
>  static int at_xdmac_probe(struct platform_device *pdev)
>  {
>