linux-kernel - Re: [PATCH 31/33] dmaengine: at_hdmac: Use pm

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Message-ID: <Y1AqvN1gn/wyAf55@matsya>
Date:   Wed, 19 Oct 2022 22:20:04 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Tudor Ambarus <tudor.ambarus@...rochip.com>
Cc:     peda@...ntia.se, du@...ntia.se, regressions@...mhuis.info,
        ludovic.desroches@...rochip.com, maciej.sosnowski@...el.com,
        dan.j.williams@...el.com, nicolas.ferre@...rochip.com,
        mripard@...nel.org, torfl6749@...il.com,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Tudor Ambarus <tudor.ambarus@...il.com>
Subject: Re: [PATCH 31/33] dmaengine: at_hdmac: Use pm_ptr()

On 20-08-22, 15:57, Tudor Ambarus wrote:
> From: Tudor Ambarus <tudor.ambarus@...il.com>
> 
> Use pm_ptr() macro to fill at_xdmac_driver.driver.pm. In case CONFIG_PM is
> not enabled, the macro will return NULL.

You annotated at_dma_dev_pm_ops with __maybe_unused which is a correct
thing to do, but should be explained here

> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus@...il.com>
> ---
>  drivers/dma/at_hdmac.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
> index 0b473e6d161d..e35b4b325452 100644
> --- a/drivers/dma/at_hdmac.c
> +++ b/drivers/dma/at_hdmac.c
> @@ -2524,7 +2524,7 @@ static int at_dma_resume_noirq(struct device *dev)
>  	return 0;
>  }
>  
> -static const struct dev_pm_ops at_dma_dev_pm_ops = {
> +static const struct dev_pm_ops __maybe_unused at_dma_dev_pm_ops = {
>  	.prepare = at_dma_prepare,
>  	.suspend_noirq = at_dma_suspend_noirq,
>  	.resume_noirq = at_dma_resume_noirq,
> @@ -2536,7 +2536,7 @@ static struct platform_driver at_dma_driver = {
>  	.id_table	= atdma_devtypes,
>  	.driver = {
>  		.name	= "at_hdmac",
> -		.pm	= &at_dma_dev_pm_ops,
> +		.pm	= pm_ptr(&at_dma_dev_pm_ops),
>  		.of_match_table	= of_match_ptr(atmel_dma_dt_ids),
>  	},
>  };
> -- 
> 2.25.1

-- 
~Vinod