diff mbox series

[v2] clocksource: ingenic-ost: define pm functions properly in platform_driver struct

Message ID 20221123083159.22821-1-lukas.bulwahn@gmail.com
State New
Headers
Series [v2] clocksource: ingenic-ost: define pm functions properly in platform_driver struct |

Commit Message

Lukas Bulwahn Nov. 23, 2022, 8:31 a.m. UTC 
  Commit ca7b72b5a5f2 ("clocksource: Add driver for the Ingenic JZ47xx OST")
adds the struct platform_driver ingenic_ost_driver, with the definition of
pm functions under the non-existing config PM_SUSPEND, which means the
intended pm functions were never actually included in any build.

As the only callbacks are .suspend_noirq and .resume_noirq, we can assume
that it is intended to be CONFIG_PM_SLEEP.

Since commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate
old ones"), the default pattern for platform_driver definitions
conditional for CONFIG_PM_SLEEP is to use pm_sleep_ptr().

As __maybe_unused annotations on the dev_pm_ops structure and its callbacks
are not needed anymore, remove these as well.

Suggested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
v1: https://lore.kernel.org/all/20221122141434.30498-1-lukas.bulwahn@gmail.com/

v1 -> v2:
  - incorporated Paul Cercueil's feedback:
    - changed to pm_sleep_ptr
    - dropped Fixes: tag

 drivers/clocksource/ingenic-ost.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Comments

Paul Cercueil Nov. 23, 2022, 5:54 p.m. UTC | #1 
Hi Lukas,

Le mer. 23 nov. 2022 à 09:31:59 +0100, Lukas Bulwahn 
<lukas.bulwahn@gmail.com> a écrit :
> Commit ca7b72b5a5f2 ("clocksource: Add driver for the Ingenic JZ47xx 
> OST")
> adds the struct platform_driver ingenic_ost_driver, with the 
> definition of
> pm functions under the non-existing config PM_SUSPEND, which means the
> intended pm functions were never actually included in any build.
> 
> As the only callbacks are .suspend_noirq and .resume_noirq, we can 
> assume
> that it is intended to be CONFIG_PM_SLEEP.
> 
> Since commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, 
> deprecate
> old ones"), the default pattern for platform_driver definitions
> conditional for CONFIG_PM_SLEEP is to use pm_sleep_ptr().
> 
> As __maybe_unused annotations on the dev_pm_ops structure and its 
> callbacks
> are not needed anymore, remove these as well.
> 
> Suggested-by: Paul Cercueil <paul@crapouillou.net>
> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>

Reviewed-by: Paul Cercueil <paul@crapouillou.net>

Cheers,
-Paul

> ---
> v1: 
> https://lore.kernel.org/all/20221122141434.30498-1-lukas.bulwahn@gmail.com/
> 
> v1 -> v2:
>   - incorporated Paul Cercueil's feedback:
>     - changed to pm_sleep_ptr
>     - dropped Fixes: tag
> 
>  drivers/clocksource/ingenic-ost.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/clocksource/ingenic-ost.c 
> b/drivers/clocksource/ingenic-ost.c
> index 06d25754e606..9f7c280a1336 100644
> --- a/drivers/clocksource/ingenic-ost.c
> +++ b/drivers/clocksource/ingenic-ost.c
> @@ -141,7 +141,7 @@ static int __init ingenic_ost_probe(struct 
> platform_device *pdev)
>  	return 0;
>  }
> 
> -static int __maybe_unused ingenic_ost_suspend(struct device *dev)
> +static int ingenic_ost_suspend(struct device *dev)
>  {
>  	struct ingenic_ost *ost = dev_get_drvdata(dev);
> 
> @@ -150,14 +150,14 @@ static int __maybe_unused 
> ingenic_ost_suspend(struct device *dev)
>  	return 0;
>  }
> 
> -static int __maybe_unused ingenic_ost_resume(struct device *dev)
> +static int ingenic_ost_resume(struct device *dev)
>  {
>  	struct ingenic_ost *ost = dev_get_drvdata(dev);
> 
>  	return clk_enable(ost->clk);
>  }
> 
> -static const struct dev_pm_ops __maybe_unused ingenic_ost_pm_ops = {
> +static const struct dev_pm_ops ingenic_ost_pm_ops = {
>  	/* _noirq: We want the OST clock to be gated last / ungated first */
>  	.suspend_noirq = ingenic_ost_suspend,
>  	.resume_noirq  = ingenic_ost_resume,
> @@ -181,9 +181,7 @@ static const struct of_device_id 
> ingenic_ost_of_match[] = {
>  static struct platform_driver ingenic_ost_driver = {
>  	.driver = {
>  		.name = "ingenic-ost",
> -#ifdef CONFIG_PM_SUSPEND
> -		.pm = &ingenic_ost_pm_ops,
> -#endif
> +		.pm = pm_sleep_ptr(&ingenic_ost_pm_ops),
>  		.of_match_table = ingenic_ost_of_match,
>  	},
>  };
> --
> 2.17.1
>
Thomas Gleixner Dec. 1, 2022, 11 a.m. UTC | #2 
Lukas!

On Wed, Nov 23 2022 at 09:31, Lukas Bulwahn wrote:
> Commit ca7b72b5a5f2 ("clocksource: Add driver for the Ingenic JZ47xx OST")
> adds the struct platform_driver ingenic_ost_driver, with the definition of
> pm functions under the non-existing config PM_SUSPEND, which means the
> intended pm functions were never actually included in any build.
>
> As the only callbacks are .suspend_noirq and .resume_noirq, we can assume
> that it is intended to be CONFIG_PM_SLEEP.
>
> Since commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate
> old ones"), the default pattern for platform_driver definitions
> conditional for CONFIG_PM_SLEEP is to use pm_sleep_ptr().
>
> As __maybe_unused annotations on the dev_pm_ops structure and its callbacks
> are not needed anymore, remove these as well.
>
> Suggested-by: Paul Cercueil <paul@crapouillou.net>
> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>

just a minor nit. The subsystem prefix should be:

     clocksource/drivers/ingenic-ost:

git log --one-line $FILE is usually a good hint for the subsystem
specific prefix choice.

Fixed it up while applying.

Thanks,

        tglx
diff mbox series

Patch

diff --git a/drivers/clocksource/ingenic-ost.c b/drivers/clocksource/ingenic-ost.c
index 06d25754e606..9f7c280a1336 100644
--- a/drivers/clocksource/ingenic-ost.c
+++ b/drivers/clocksource/ingenic-ost.c
@@ -141,7 +141,7 @@  static int __init ingenic_ost_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused ingenic_ost_suspend(struct device *dev)
+static int ingenic_ost_suspend(struct device *dev)
 {
 	struct ingenic_ost *ost = dev_get_drvdata(dev);
 
@@ -150,14 +150,14 @@  static int __maybe_unused ingenic_ost_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused ingenic_ost_resume(struct device *dev)
+static int ingenic_ost_resume(struct device *dev)
 {
 	struct ingenic_ost *ost = dev_get_drvdata(dev);
 
 	return clk_enable(ost->clk);
 }
 
-static const struct dev_pm_ops __maybe_unused ingenic_ost_pm_ops = {
+static const struct dev_pm_ops ingenic_ost_pm_ops = {
 	/* _noirq: We want the OST clock to be gated last / ungated first */
 	.suspend_noirq = ingenic_ost_suspend,
 	.resume_noirq  = ingenic_ost_resume,
@@ -181,9 +181,7 @@  static const struct of_device_id ingenic_ost_of_match[] = {
 static struct platform_driver ingenic_ost_driver = {
 	.driver = {
 		.name = "ingenic-ost",
-#ifdef CONFIG_PM_SUSPEND
-		.pm = &ingenic_ost_pm_ops,
-#endif
+		.pm = pm_sleep_ptr(&ingenic_ost_pm_ops),
 		.of_match_table = ingenic_ost_of_match,
 	},
 };