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pinctrl: sprd-sc9860: Convert to platform remove callback returning void 

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 ignored (apart
from emitting a warning) 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. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

To convert the sprd-sc9860 driver, make sprd_pinctrl_remove()
return void (instead of zero) and use .remove_new as callback.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231009162510.335208-4-u.kleine-koenig@pengutronix.de
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Uwe Kleine-König 2023-10-09 18:25:10 +02:00 committed by Linus Walleij
parent 22ee670a8a
commit c341ac65bf
3 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pinctrl/sprd/pinctrl-sprd-sc9860.c
View File

@ -943,7 +943,7 @@ static struct platform_driver sprd_pinctrl_driver = {
.of_match_table = sprd_pinctrl_of_match,
},
.probe = sprd_pinctrl_probe,
.remove = sprd_pinctrl_remove,
.remove_new = sprd_pinctrl_remove,
.shutdown = sprd_pinctrl_shutdown,
};
module_platform_driver(sprd_pinctrl_driver);

3
drivers/pinctrl/sprd/pinctrl-sprd.c
View File

@ -1110,12 +1110,11 @@ int sprd_pinctrl_core_probe(struct platform_device *pdev,
}
EXPORT_SYMBOL_GPL(sprd_pinctrl_core_probe);
int sprd_pinctrl_remove(struct platform_device *pdev)
void sprd_pinctrl_remove(struct platform_device *pdev)
{
struct sprd_pinctrl *sprd_pctl = platform_get_drvdata(pdev);
pinctrl_unregister(sprd_pctl->pctl);
return 0;
}
EXPORT_SYMBOL_GPL(sprd_pinctrl_remove);

2
drivers/pinctrl/sprd/pinctrl-sprd.h
View File

@ -53,7 +53,7 @@ struct sprd_pins_info {
int sprd_pinctrl_core_probe(struct platform_device *pdev,
struct sprd_pins_info *sprd_soc_pin_info,
int pins_cnt);
int sprd_pinctrl_remove(struct platform_device *pdev);
void sprd_pinctrl_remove(struct platform_device *pdev);
void sprd_pinctrl_shutdown(struct platform_device *pdev);
#endif /* __PINCTRL_SPRD_H__ */