linux-kernel - Re: [PATCH] dmaengine: tegra210-adma: Fix unused function warnings

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Date:   Wed, 10 Jul 2019 09:38:37 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     YueHaibing <yuehaibing@...wei.com>, <ldewangan@...dia.com>,
        <vkoul@...nel.org>, <dan.j.williams@...el.com>,
        <thierry.reding@...il.com>
CC:     <linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: tegra210-adma: Fix unused function warnings


On 09/07/2019 09:32, YueHaibing wrote:
> If CONFIG_PM is not set, build warnings:
> 
> drivers/dma/tegra210-adma.c:747:12: warning: tegra_adma_runtime_resume defined but not used [-Wunused-function]
>  static int tegra_adma_runtime_resume(struct device *dev)
> drivers/dma/tegra210-adma.c:715:12: warning: tegra_adma_runtime_suspend defined but not used [-Wunused-function]
>  static int tegra_adma_runtime_suspend(struct device *dev)
> 
> Mark the two function as __maybe_unused.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  drivers/dma/tegra210-adma.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
> index 2805853..b33cf6e 100644
> --- a/drivers/dma/tegra210-adma.c
> +++ b/drivers/dma/tegra210-adma.c
> @@ -712,7 +712,7 @@ static struct dma_chan *tegra_dma_of_xlate(struct of_phandle_args *dma_spec,
>  	return chan;
>  }
>  
> -static int tegra_adma_runtime_suspend(struct device *dev)
> +static int __maybe_unused tegra_adma_runtime_suspend(struct device *dev)
>  {
>  	struct tegra_adma *tdma = dev_get_drvdata(dev);
>  	struct tegra_adma_chan_regs *ch_reg;
> @@ -744,7 +744,7 @@ static int tegra_adma_runtime_suspend(struct device *dev)
>  	return 0;
>  }
>  
> -static int tegra_adma_runtime_resume(struct device *dev)
> +static int __maybe_unused tegra_adma_runtime_resume(struct device *dev)
>  {
>  	struct tegra_adma *tdma = dev_get_drvdata(dev);
>  	struct tegra_adma_chan_regs *ch_reg;
> 

Thanks!

Acked-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
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