linux-kernel - Re: [PATCH] memory: atmel-ebi: mark PM ops as __maybe

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Date:   Wed, 19 Apr 2017 19:52:27 +0200
From:   Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Lee Jones <lee.jones@...aro.org>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memory: atmel-ebi: mark PM ops as __maybe_unused

On 19/04/2017 at 19:48:07 +0200, Arnd Bergmann wrote:
> We get a harmless warning without CONFIG_PM:
> 
> drivers/memory/atmel-ebi.c:584:12: error: 'atmel_ebi_resume' defined but not used [-Werror=unused-function]
> 
> Marking the function as __maybe_unused does the right thing here
> and drops it silently when unused.
> 
> Fixes: a483fb10e5ea ("memory: atmel-ebi: Add PM ops")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Sure,

Acked-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

I think you can safely take it through arm-soc directly.

> ---
>  drivers/memory/atmel-ebi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/memory/atmel-ebi.c b/drivers/memory/atmel-ebi.c
> index 35910f945bfa..99e644cda4d1 100644
> --- a/drivers/memory/atmel-ebi.c
> +++ b/drivers/memory/atmel-ebi.c
> @@ -581,7 +581,7 @@ static int atmel_ebi_probe(struct platform_device *pdev)
>  	return of_platform_populate(np, NULL, NULL, dev);
>  }
>  
> -static int atmel_ebi_resume(struct device *dev)
> +static __maybe_unused int atmel_ebi_resume(struct device *dev)
>  {
>  	struct atmel_ebi *ebi = dev_get_drvdata(dev);
>  	struct atmel_ebi_dev *ebid;
> -- 
> 2.9.0
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com