linux-kernel - Re: [PATCH 1/3] thermal: st: switch from CONFIG_PM_SLEEP guards to pm_sleep

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Date: Tue, 25 Jun 2024 08:17:38 +0200
From: Patrice CHOTARD <patrice.chotard@...s.st.com>
To: Raphael Gallais-Pou <rgallaispou@...il.com>,
        "Rafael J. Wysocki"
	<rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Zhang Rui
	<rui.zhang@...el.com>, Lukasz Luba <lukasz.luba@....com>,
        Maxime Coquelin
	<mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH 1/3] thermal: st: switch from CONFIG_PM_SLEEP guards to
 pm_sleep_ptr()



On 5/18/24 14:12, Raphael Gallais-Pou wrote:
> 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.
> 
> Remove those guards on every ST thermal related drivers.
> 
> Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>
> ---
>  drivers/thermal/st/st_thermal.c        | 4 +---
>  drivers/thermal/st/st_thermal_memmap.c | 2 +-
>  drivers/thermal/st/stm_thermal.c       | 8 +++-----
>  3 files changed, 5 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/thermal/st/st_thermal.c b/drivers/thermal/st/st_thermal.c
> index 2a105409864e..5f33543a3a54 100644
> --- a/drivers/thermal/st/st_thermal.c
> +++ b/drivers/thermal/st/st_thermal.c
> @@ -236,7 +236,6 @@ void st_thermal_unregister(struct platform_device *pdev)
>  }
>  EXPORT_SYMBOL_GPL(st_thermal_unregister);
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int st_thermal_suspend(struct device *dev)
>  {
>  	struct st_thermal_sensor *sensor = dev_get_drvdata(dev);
> @@ -265,9 +264,8 @@ static int st_thermal_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
> -SIMPLE_DEV_PM_OPS(st_thermal_pm_ops, st_thermal_suspend, st_thermal_resume);
> +DEFINE_SIMPLE_DEV_PM_OPS(st_thermal_pm_ops, st_thermal_suspend, st_thermal_resume);
>  EXPORT_SYMBOL_GPL(st_thermal_pm_ops);
>  
>  MODULE_AUTHOR("STMicroelectronics (R&D) Limited <ajitpal.singh@...com>");
> diff --git a/drivers/thermal/st/st_thermal_memmap.c b/drivers/thermal/st/st_thermal_memmap.c
> index 29c2269b0fb3..28b380013956 100644
> --- a/drivers/thermal/st/st_thermal_memmap.c
> +++ b/drivers/thermal/st/st_thermal_memmap.c
> @@ -180,7 +180,7 @@ static void st_mmap_remove(struct platform_device *pdev)
>  static struct platform_driver st_mmap_thermal_driver = {
>  	.driver = {
>  		.name	= "st_thermal_mmap",
> -		.pm     = &st_thermal_pm_ops,
> +		.pm     = pm_sleep_ptr(&st_thermal_pm_ops),
>  		.of_match_table = st_mmap_thermal_of_match,
>  	},
>  	.probe		= st_mmap_probe,
> diff --git a/drivers/thermal/st/stm_thermal.c b/drivers/thermal/st/stm_thermal.c
> index 34785b9276fc..ffd988600ed6 100644
> --- a/drivers/thermal/st/stm_thermal.c
> +++ b/drivers/thermal/st/stm_thermal.c
> @@ -440,7 +440,6 @@ static int stm_thermal_prepare(struct stm_thermal_sensor *sensor)
>  	return ret;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int stm_thermal_suspend(struct device *dev)
>  {
>  	struct stm_thermal_sensor *sensor = dev_get_drvdata(dev);
> @@ -466,10 +465,9 @@ static int stm_thermal_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif /* CONFIG_PM_SLEEP */
>  
> -static SIMPLE_DEV_PM_OPS(stm_thermal_pm_ops,
> -			 stm_thermal_suspend, stm_thermal_resume);
> +static DEFINE_SIMPLE_DEV_PM_OPS(stm_thermal_pm_ops,
> +				stm_thermal_suspend, stm_thermal_resume);
>  
>  static const struct thermal_zone_device_ops stm_tz_ops = {
>  	.get_temp	= stm_thermal_get_temp,
> @@ -580,7 +578,7 @@ static void stm_thermal_remove(struct platform_device *pdev)
>  static struct platform_driver stm_thermal_driver = {
>  	.driver = {
>  		.name	= "stm_thermal",
> -		.pm     = &stm_thermal_pm_ops,
> +		.pm     = pm_sleep_ptr(&stm_thermal_pm_ops),
>  		.of_match_table = stm_thermal_of_match,
>  	},
>  	.probe		= stm_thermal_probe,
> 
Hi Raphael

Reviewed-by: Patrice Chotard <patrice.chotard@...s.st.com>

Thanks
Patrice