linux-kernel - Re: [PATCH] spi: st: Switch from CONFIG_PM_SLEEP guards to pm_sleep

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Message-ID: <ed9e407e-22a8-49e4-b1ec-0525265351a6@gmail.com>
Date: Sun, 13 Jul 2025 15:56:48 +0200
From: Raphaël Gallais-Pou <rgallaispou@...il.com>
To: Mark Brown <broonie@...nel.org>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: st: Switch from CONFIG_PM_SLEEP guards to
 pm_sleep_ptr()



Le 09/06/2025 à 23:21, Raphael Gallais-Pou a écrit :
> Letting the compiler remove these functions when the kernel is built
> without CONFIG_PM_SLEEP support is simpler and less error prone than the
> use of #ifdef based kernel configuration guards.
>
> Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>

Hi Mark,

Gentle ping ! :)

Thanks,
Raphaël
> ---
>   drivers/spi/spi-st-ssc4.c | 14 +++++---------
>   1 file changed, 5 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c
> index 4cff976ab16fbdf3708ab870176a04f2628b501b..49ab4c515156fbabe0761028a5cb4770b61ca508 100644
> --- a/drivers/spi/spi-st-ssc4.c
> +++ b/drivers/spi/spi-st-ssc4.c
> @@ -378,8 +378,7 @@ static void spi_st_remove(struct platform_device *pdev)
>   	pinctrl_pm_select_sleep_state(&pdev->dev);
>   }
>   
> -#ifdef CONFIG_PM
> -static int spi_st_runtime_suspend(struct device *dev)
> +static int __maybe_unused spi_st_runtime_suspend(struct device *dev)
>   {
>   	struct spi_controller *host = dev_get_drvdata(dev);
>   	struct spi_st *spi_st = spi_controller_get_devdata(host);
> @@ -392,7 +391,7 @@ static int spi_st_runtime_suspend(struct device *dev)
>   	return 0;
>   }
>   
> -static int spi_st_runtime_resume(struct device *dev)
> +static int __maybe_unused spi_st_runtime_resume(struct device *dev)
>   {
>   	struct spi_controller *host = dev_get_drvdata(dev);
>   	struct spi_st *spi_st = spi_controller_get_devdata(host);
> @@ -403,10 +402,8 @@ static int spi_st_runtime_resume(struct device *dev)
>   
>   	return ret;
>   }
> -#endif
>   
> -#ifdef CONFIG_PM_SLEEP
> -static int spi_st_suspend(struct device *dev)
> +static int __maybe_unused spi_st_suspend(struct device *dev)
>   {
>   	struct spi_controller *host = dev_get_drvdata(dev);
>   	int ret;
> @@ -418,7 +415,7 @@ static int spi_st_suspend(struct device *dev)
>   	return pm_runtime_force_suspend(dev);
>   }
>   
> -static int spi_st_resume(struct device *dev)
> +static int __maybe_unused spi_st_resume(struct device *dev)
>   {
>   	struct spi_controller *host = dev_get_drvdata(dev);
>   	int ret;
> @@ -429,7 +426,6 @@ static int spi_st_resume(struct device *dev)
>   
>   	return pm_runtime_force_resume(dev);
>   }
> -#endif
>   
>   static const struct dev_pm_ops spi_st_pm = {
>   	SET_SYSTEM_SLEEP_PM_OPS(spi_st_suspend, spi_st_resume)
> @@ -445,7 +441,7 @@ MODULE_DEVICE_TABLE(of, stm_spi_match);
>   static struct platform_driver spi_st_driver = {
>   	.driver = {
>   		.name = "spi-st",
> -		.pm = &spi_st_pm,
> +		.pm = pm_sleep_ptr(&spi_st_pm),
>   		.of_match_table = of_match_ptr(stm_spi_match),
>   	},
>   	.probe = spi_st_probe,
>
> ---
> base-commit: 475c850a7fdd0915b856173186d5922899d65686
> change-id: 20250609-update_pm_macro-b6def2446904
>
> Best regards,