diff mbox series

[18/41] rtc: mpfs: Convert to platform remove callback returning void

Message ID 20230304133028.2135435-19-u.kleine-koenig@pengutronix.de (mailing list archive)
State Handled Elsewhere
Headers show
Series rtc: Convert to platform remove callback returning void | expand

Commit Message

Uwe Kleine-König March 4, 2023, 1:30 p.m. UTC
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/rtc/rtc-mpfs.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Conor Dooley March 4, 2023, 1:47 p.m. UTC | #1
On Sat, Mar 04, 2023 at 02:30:05PM +0100, Uwe Kleine-König wrote:
> The .remove() callback for a platform driver returns an int which makes
> many driver authors wrongly assume it's possible to do error handling by
> returning an error code. However the value returned is (mostly) ignored
> and this typically results in resource leaks. To improve here there is a
> quest to make the remove callback return void. In the first step of this
> quest all drivers are converted to .remove_new() which already returns
> void.
> 
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
>  drivers/rtc/rtc-mpfs.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-mpfs.c b/drivers/rtc/rtc-mpfs.c
> index 2a479d44f198..5b96a6d39210 100644
> --- a/drivers/rtc/rtc-mpfs.c
> +++ b/drivers/rtc/rtc-mpfs.c
> @@ -274,11 +274,9 @@ static int mpfs_rtc_probe(struct platform_device *pdev)
>  	return devm_rtc_register_device(rtcdev->rtc);
>  }
>  
> -static int mpfs_rtc_remove(struct platform_device *pdev)
> +static void mpfs_rtc_remove(struct platform_device *pdev)
>  {
>  	dev_pm_clear_wake_irq(&pdev->dev);
> -
> -	return 0;
>  }
>  
>  static const struct of_device_id mpfs_rtc_of_match[] = {
> @@ -290,7 +288,7 @@ MODULE_DEVICE_TABLE(of, mpfs_rtc_of_match);
>  
>  static struct platform_driver mpfs_rtc_driver = {
>  	.probe = mpfs_rtc_probe,
> -	.remove = mpfs_rtc_remove,
> +	.remove_new = mpfs_rtc_remove,
>  	.driver	= {
>  		.name = "mpfs_rtc",
>  		.of_match_table = mpfs_rtc_of_match,
> -- 
> 2.39.1
>
diff mbox series

Patch

diff --git a/drivers/rtc/rtc-mpfs.c b/drivers/rtc/rtc-mpfs.c
index 2a479d44f198..5b96a6d39210 100644
--- a/drivers/rtc/rtc-mpfs.c
+++ b/drivers/rtc/rtc-mpfs.c
@@ -274,11 +274,9 @@  static int mpfs_rtc_probe(struct platform_device *pdev)
 	return devm_rtc_register_device(rtcdev->rtc);
 }
 
-static int mpfs_rtc_remove(struct platform_device *pdev)
+static void mpfs_rtc_remove(struct platform_device *pdev)
 {
 	dev_pm_clear_wake_irq(&pdev->dev);
-
-	return 0;
 }
 
 static const struct of_device_id mpfs_rtc_of_match[] = {
@@ -290,7 +288,7 @@  MODULE_DEVICE_TABLE(of, mpfs_rtc_of_match);
 
 static struct platform_driver mpfs_rtc_driver = {
 	.probe = mpfs_rtc_probe,
-	.remove = mpfs_rtc_remove,
+	.remove_new = mpfs_rtc_remove,
 	.driver	= {
 		.name = "mpfs_rtc",
 		.of_match_table = mpfs_rtc_of_match,