[PATCH 3/8] watchdog: mtk_wdt: Remove #ifdef guards for PM related functions

[PATCH 3/8] watchdog: mtk_wdt: Remove #ifdef guards for PM related functions

[Paul Cercueil]

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards. Not using #ifdef guards means that the code is
always compiled independently of any Kconfig option, and thanks to that
bugs and regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
---
 drivers/watchdog/mtk_wdt.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index f0d4e3cc7459..e97787536792 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -401,7 +401,6 @@ static int mtk_wdt_probe(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mtk_wdt_suspend(struct device *dev)
 {
 	struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev);
@@ -423,7 +422,6 @@ static int mtk_wdt_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct of_device_id mtk_wdt_dt_ids[] = {
 	{ .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data },
@@ -437,16 +435,14 @@ static const struct of_device_id mtk_wdt_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids);
 
-static const struct dev_pm_ops mtk_wdt_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend,
-				mtk_wdt_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(mtk_wdt_pm_ops,
+				mtk_wdt_suspend, mtk_wdt_resume);
 
 static struct platform_driver mtk_wdt_driver = {
 	.probe		= mtk_wdt_probe,
 	.driver		= {
 		.name		= DRV_NAME,
-		.pm		= &mtk_wdt_pm_ops,
+		.pm		= pm_sleep_ptr(&mtk_wdt_pm_ops),
 		.of_match_table	= mtk_wdt_dt_ids,
 	},
 };
-- 
2.35.1


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Re: [PATCH 3/8] watchdog: mtk_wdt: Remove #ifdef guards for PM related functions

[Guenter Roeck]

On Tue, Jun 28, 2022 at 08:34:44PM +0100, Paul Cercueil wrote:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-mediatek@lists.infradead.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/mtk_wdt.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
> index f0d4e3cc7459..e97787536792 100644
> --- a/drivers/watchdog/mtk_wdt.c
> +++ b/drivers/watchdog/mtk_wdt.c
> @@ -401,7 +401,6 @@ static int mtk_wdt_probe(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int mtk_wdt_suspend(struct device *dev)
>  {
>  	struct mtk_wdt_dev *mtk_wdt = dev_get_drvdata(dev);
> @@ -423,7 +422,6 @@ static int mtk_wdt_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
>  static const struct of_device_id mtk_wdt_dt_ids[] = {
>  	{ .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data },
> @@ -437,16 +435,14 @@ static const struct of_device_id mtk_wdt_dt_ids[] = {
>  };
>  MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids);
>  
> -static const struct dev_pm_ops mtk_wdt_pm_ops = {
> -	SET_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend,
> -				mtk_wdt_resume)
> -};
> +static DEFINE_SIMPLE_DEV_PM_OPS(mtk_wdt_pm_ops,
> +				mtk_wdt_suspend, mtk_wdt_resume);
>  
>  static struct platform_driver mtk_wdt_driver = {
>  	.probe		= mtk_wdt_probe,
>  	.driver		= {
>  		.name		= DRV_NAME,
> -		.pm		= &mtk_wdt_pm_ops,
> +		.pm		= pm_sleep_ptr(&mtk_wdt_pm_ops),
>  		.of_match_table	= mtk_wdt_dt_ids,
>  	},
>  };
> -- 
> 2.35.1
> 

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Re: [PATCH 3/8] watchdog: mtk_wdt: Remove #ifdef guards for PM related functions

[AngeloGioacchino Del Regno]

Il 28/06/22 21:34, Paul Cercueil ha scritto:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Matthias Brugger <matthias.bgg@gmail.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-mediatek@lists.infradead.org
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

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[PATCH 4/8] watchdog: s3c2410_wdt: Remove #ifdef guards for PM related functions

[Paul Cercueil]

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards. Not using #ifdef guards means that the code is
always compiled independently of any Kconfig option, and thanks to that
bugs and regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
---
 drivers/watchdog/s3c2410_wdt.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index 6db22f2e3a4f..95919392927f 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -845,8 +845,6 @@ static void s3c2410wdt_shutdown(struct platform_device *dev)
 	s3c2410wdt_stop(&wdt->wdt_device);
 }
 
-#ifdef CONFIG_PM_SLEEP
-
 static int s3c2410wdt_suspend(struct device *dev)
 {
 	int ret;
@@ -885,10 +883,9 @@ static int s3c2410wdt_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops, s3c2410wdt_suspend,
-			s3c2410wdt_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops,
+				s3c2410wdt_suspend, s3c2410wdt_resume);
 
 static struct platform_driver s3c2410wdt_driver = {
 	.probe		= s3c2410wdt_probe,
@@ -897,7 +894,7 @@ static struct platform_driver s3c2410wdt_driver = {
 	.id_table	= s3c2410_wdt_ids,
 	.driver		= {
 		.name	= "s3c2410-wdt",
-		.pm	= &s3c2410wdt_pm_ops,
+		.pm	= pm_sleep_ptr(&s3c2410wdt_pm_ops),
 		.of_match_table	= of_match_ptr(s3c2410_wdt_match),
 	},
 };
-- 
2.35.1


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Re: [PATCH 4/8] watchdog: s3c2410_wdt: Remove #ifdef guards for PM related functions

[Guenter Roeck]

On Tue, Jun 28, 2022 at 08:34:45PM +0100, Paul Cercueil wrote:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Cc: Alim Akhtar <alim.akhtar@samsung.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-samsung-soc@vger.kernel.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/s3c2410_wdt.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
> index 6db22f2e3a4f..95919392927f 100644
> --- a/drivers/watchdog/s3c2410_wdt.c
> +++ b/drivers/watchdog/s3c2410_wdt.c
> @@ -845,8 +845,6 @@ static void s3c2410wdt_shutdown(struct platform_device *dev)
>  	s3c2410wdt_stop(&wdt->wdt_device);
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
> -
>  static int s3c2410wdt_suspend(struct device *dev)
>  {
>  	int ret;
> @@ -885,10 +883,9 @@ static int s3c2410wdt_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
> -static SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops, s3c2410wdt_suspend,
> -			s3c2410wdt_resume);
> +static DEFINE_SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops,
> +				s3c2410wdt_suspend, s3c2410wdt_resume);
>  
>  static struct platform_driver s3c2410wdt_driver = {
>  	.probe		= s3c2410wdt_probe,
> @@ -897,7 +894,7 @@ static struct platform_driver s3c2410wdt_driver = {
>  	.id_table	= s3c2410_wdt_ids,
>  	.driver		= {
>  		.name	= "s3c2410-wdt",
> -		.pm	= &s3c2410wdt_pm_ops,
> +		.pm	= pm_sleep_ptr(&s3c2410wdt_pm_ops),
>  		.of_match_table	= of_match_ptr(s3c2410_wdt_match),
>  	},
>  };
> -- 
> 2.35.1
> 

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Re: [PATCH 4/8] watchdog: s3c2410_wdt: Remove #ifdef guards for PM related functions

[Krzysztof Kozlowski]

On 28/06/2022 21:34, Paul Cercueil wrote:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof

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[PATCH 5/8] watchdog: sama5d4_wdt: Remove #ifdef guards for PM related functions

[Paul Cercueil]

Use the new LATE_SYSTEM_SLEEP_PM_OPS() and pm_sleep_ptr() macros to
handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards. Not using #ifdef guards means that the code is
always compiled independently of any Kconfig option, and thanks to that
bugs and regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
Cc: linux-arm-kernel@lists.infradead.org
---
 drivers/watchdog/sama5d4_wdt.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.c
index ec20ad4e534f..aeee934ca51b 100644
--- a/drivers/watchdog/sama5d4_wdt.c
+++ b/drivers/watchdog/sama5d4_wdt.c
@@ -339,7 +339,6 @@ static const struct of_device_id sama5d4_wdt_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, sama5d4_wdt_of_match);
 
-#ifdef CONFIG_PM_SLEEP
 static int sama5d4_wdt_suspend_late(struct device *dev)
 {
 	struct sama5d4_wdt *wdt = dev_get_drvdata(dev);
@@ -366,18 +365,17 @@ static int sama5d4_wdt_resume_early(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops sama5d4_wdt_pm_ops = {
-	SET_LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
-			sama5d4_wdt_resume_early)
+	LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
+				 sama5d4_wdt_resume_early)
 };
 
 static struct platform_driver sama5d4_wdt_driver = {
 	.probe		= sama5d4_wdt_probe,
 	.driver		= {
 		.name	= "sama5d4_wdt",
-		.pm	= &sama5d4_wdt_pm_ops,
+		.pm	= pm_sleep_ptr(&sama5d4_wdt_pm_ops),
 		.of_match_table = sama5d4_wdt_of_match,
 	}
 };
-- 
2.35.1


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Re: [PATCH 5/8] watchdog: sama5d4_wdt: Remove #ifdef guards for PM related functions

[Guenter Roeck]

On Tue, Jun 28, 2022 at 08:34:46PM +0100, Paul Cercueil wrote:
> Use the new LATE_SYSTEM_SLEEP_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
> Cc: linux-arm-kernel@lists.infradead.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/sama5d4_wdt.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.c
> index ec20ad4e534f..aeee934ca51b 100644
> --- a/drivers/watchdog/sama5d4_wdt.c
> +++ b/drivers/watchdog/sama5d4_wdt.c
> @@ -339,7 +339,6 @@ static const struct of_device_id sama5d4_wdt_of_match[] = {
>  };
>  MODULE_DEVICE_TABLE(of, sama5d4_wdt_of_match);
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int sama5d4_wdt_suspend_late(struct device *dev)
>  {
>  	struct sama5d4_wdt *wdt = dev_get_drvdata(dev);
> @@ -366,18 +365,17 @@ static int sama5d4_wdt_resume_early(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
>  static const struct dev_pm_ops sama5d4_wdt_pm_ops = {
> -	SET_LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
> -			sama5d4_wdt_resume_early)
> +	LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
> +				 sama5d4_wdt_resume_early)
>  };
>  
>  static struct platform_driver sama5d4_wdt_driver = {
>  	.probe		= sama5d4_wdt_probe,
>  	.driver		= {
>  		.name	= "sama5d4_wdt",
> -		.pm	= &sama5d4_wdt_pm_ops,
> +		.pm	= pm_sleep_ptr(&sama5d4_wdt_pm_ops),
>  		.of_match_table = sama5d4_wdt_of_match,
>  	}
>  };
> -- 
> 2.35.1
> 

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Re: [PATCH 5/8] watchdog: sama5d4_wdt: Remove #ifdef guards for PM related functions

[Claudiu.Beznea]

On 28.06.2022 22:34, Paul Cercueil wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Use the new LATE_SYSTEM_SLEEP_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> Cc: Claudiu Beznea <claudiu.beznea@microchip.com>
> Cc: linux-arm-kernel@lists.infradead.org

Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>

> ---
>  drivers/watchdog/sama5d4_wdt.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/watchdog/sama5d4_wdt.c b/drivers/watchdog/sama5d4_wdt.c
> index ec20ad4e534f..aeee934ca51b 100644
> --- a/drivers/watchdog/sama5d4_wdt.c
> +++ b/drivers/watchdog/sama5d4_wdt.c
> @@ -339,7 +339,6 @@ static const struct of_device_id sama5d4_wdt_of_match[] = {
>  };
>  MODULE_DEVICE_TABLE(of, sama5d4_wdt_of_match);
> 
> -#ifdef CONFIG_PM_SLEEP
>  static int sama5d4_wdt_suspend_late(struct device *dev)
>  {
>         struct sama5d4_wdt *wdt = dev_get_drvdata(dev);
> @@ -366,18 +365,17 @@ static int sama5d4_wdt_resume_early(struct device *dev)
> 
>         return 0;
>  }
> -#endif
> 
>  static const struct dev_pm_ops sama5d4_wdt_pm_ops = {
> -       SET_LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
> -                       sama5d4_wdt_resume_early)
> +       LATE_SYSTEM_SLEEP_PM_OPS(sama5d4_wdt_suspend_late,
> +                                sama5d4_wdt_resume_early)
>  };
> 
>  static struct platform_driver sama5d4_wdt_driver = {
>         .probe          = sama5d4_wdt_probe,
>         .driver         = {
>                 .name   = "sama5d4_wdt",
> -               .pm     = &sama5d4_wdt_pm_ops,
> +               .pm     = pm_sleep_ptr(&sama5d4_wdt_pm_ops),
>                 .of_match_table = sama5d4_wdt_of_match,
>         }
>  };
> --
> 2.35.1
> 

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[PATCH 6/8] watchdog: st_lpc_wdt: Remove #ifdef guards for PM related functions

[Paul Cercueil]

Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
handle the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards. Not using #ifdef guards means that the code is
always compiled independently of any Kconfig option, and thanks to that
bugs and regressions are easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: linux-arm-kernel@lists.infradead.org
---
 drivers/watchdog/st_lpc_wdt.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/watchdog/st_lpc_wdt.c b/drivers/watchdog/st_lpc_wdt.c
index 14ab6559c748..39abecdb9dd1 100644
--- a/drivers/watchdog/st_lpc_wdt.c
+++ b/drivers/watchdog/st_lpc_wdt.c
@@ -248,7 +248,6 @@ static int st_wdog_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int st_wdog_suspend(struct device *dev)
 {
 	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);
@@ -285,16 +284,14 @@ static int st_wdog_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(st_wdog_pm_ops,
-			 st_wdog_suspend,
-			 st_wdog_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(st_wdog_pm_ops,
+				st_wdog_suspend, st_wdog_resume);
 
 static struct platform_driver st_wdog_driver = {
 	.driver	= {
 		.name = "st-lpc-wdt",
-		.pm = &st_wdog_pm_ops,
+		.pm = pm_sleep_ptr(&st_wdog_pm_ops),
 		.of_match_table = st_wdog_match,
 	},
 	.probe = st_wdog_probe,
-- 
2.35.1


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Re: [PATCH 6/8] watchdog: st_lpc_wdt: Remove #ifdef guards for PM related functions

[Guenter Roeck]

On Tue, Jun 28, 2022 at 08:34:47PM +0100, Paul Cercueil wrote:
> Use the new DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to
> handle the .suspend/.resume callbacks.
> 
> These macros allow the suspend and resume functions to be automatically
> dropped by the compiler when CONFIG_SUSPEND is disabled, without having
> to use #ifdef guards. Not using #ifdef guards means that the code is
> always compiled independently of any Kconfig option, and thanks to that
> bugs and regressions are easier to catch.
> 
> Signed-off-by: Paul Cercueil <paul@crapouillou.net>
> Cc: Patrice Chotard <patrice.chotard@foss.st.com>
> Cc: linux-arm-kernel@lists.infradead.org

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/st_lpc_wdt.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/watchdog/st_lpc_wdt.c b/drivers/watchdog/st_lpc_wdt.c
> index 14ab6559c748..39abecdb9dd1 100644
> --- a/drivers/watchdog/st_lpc_wdt.c
> +++ b/drivers/watchdog/st_lpc_wdt.c
> @@ -248,7 +248,6 @@ static int st_wdog_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> -#ifdef CONFIG_PM_SLEEP
>  static int st_wdog_suspend(struct device *dev)
>  {
>  	struct st_wdog *st_wdog = watchdog_get_drvdata(&st_wdog_dev);
> @@ -285,16 +284,14 @@ static int st_wdog_resume(struct device *dev)
>  
>  	return 0;
>  }
> -#endif
>  
> -static SIMPLE_DEV_PM_OPS(st_wdog_pm_ops,
> -			 st_wdog_suspend,
> -			 st_wdog_resume);
> +static DEFINE_SIMPLE_DEV_PM_OPS(st_wdog_pm_ops,
> +				st_wdog_suspend, st_wdog_resume);
>  
>  static struct platform_driver st_wdog_driver = {
>  	.driver	= {
>  		.name = "st-lpc-wdt",
> -		.pm = &st_wdog_pm_ops,
> +		.pm = pm_sleep_ptr(&st_wdog_pm_ops),
>  		.of_match_table = st_wdog_match,
>  	},
>  	.probe = st_wdog_probe,
> -- 
> 2.35.1
> 

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