[05/32] power: supply: acer_a500_battery: Convert to platform remove callback returning void

Commit Message

Uwe Kleine-König Sept. 18, 2023, 1:36 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 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() is renamed to .remove().

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

Signed-off-by: Uwe Kleine-König <[e-mail]>
---
 drivers/power/supply/acer_a500_battery.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/power/supply/acer_a500_battery.c b/drivers/power/supply/acer_a500_battery.c
index 32a0bfcac08f..ef5c419b1b7f 100644
--- a/drivers/power/supply/acer_a500_battery.c
+++ b/drivers/power/supply/acer_a500_battery.c
@@ -251,13 +251,11 @@  static int a500_battery_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int a500_battery_remove(struct platform_device *pdev)
+static void a500_battery_remove(struct platform_device *pdev)
 {
 	struct a500_battery *bat = dev_get_drvdata(&pdev->dev);
 
 	cancel_delayed_work_sync(&bat->poll_work);
-
-	return 0;
 }
 
 static int __maybe_unused a500_battery_suspend(struct device *dev)
@@ -287,7 +285,7 @@  static struct platform_driver a500_battery_driver = {
 		.pm = &a500_battery_pm_ops,
 	},
 	.probe = a500_battery_probe,
-	.remove = a500_battery_remove,
+	.remove_new = a500_battery_remove,
 };
 module_platform_driver(a500_battery_driver);