iio: light: cm3605: 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().

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>
Link: https://lore.kernel.org/r/20230919174931.1417681-37-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/light/cm3605.c b/drivers/iio/light/cm3605.c
index e7f0b81b7f5abcf3c1bef0fa1be0684358221335..22a63a89f289a28fccd310547031542bdd2c9bc2 100644 (file)
--- a/drivers/iio/light/cm3605.c
+++ b/drivers/iio/light/cm3605.c
@@ -266,7 +266,7 @@ out_disable_vdd:
        return ret;
 }
 
-static int cm3605_remove(struct platform_device *pdev)
+static void cm3605_remove(struct platform_device *pdev)
 {
        struct iio_dev *indio_dev = platform_get_drvdata(pdev);
        struct cm3605 *cm3605 = iio_priv(indio_dev);
@@ -276,8 +276,6 @@ static int cm3605_remove(struct platform_device *pdev)
        gpiod_set_value_cansleep(cm3605->aset, 0);
        iio_device_unregister(indio_dev);
        regulator_disable(cm3605->vdd);
-
-       return 0;
 }
 
 static int cm3605_pm_suspend(struct device *dev)
@@ -320,7 +318,7 @@ static struct platform_driver cm3605_driver = {
                .pm = pm_sleep_ptr(&cm3605_dev_pm_ops),
        },
        .probe = cm3605_probe,
-       .remove = cm3605_remove,
+       .remove_new = cm3605_remove,
 };
 module_platform_driver(cm3605_driver);