cpuidle: kirkwood: 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 (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.

Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230712094014.41787-1-frank.li@vivo.com

diff --git a/drivers/cpuidle/cpuidle-kirkwood.c b/drivers/cpuidle/cpuidle-kirkwood.c
index 13bf743f885b6c794b2d4c422a97f6d9c007a4b2..602c4dfdd7e2ead6bc1d44efe3185d2baf7d6cee 100644 (file)
--- a/drivers/cpuidle/cpuidle-kirkwood.c
+++ b/drivers/cpuidle/cpuidle-kirkwood.c
@@ -59,15 +59,14 @@ static int kirkwood_cpuidle_probe(struct platform_device *pdev)
        return cpuidle_register(&kirkwood_idle_driver, NULL);
 }
 
-static int kirkwood_cpuidle_remove(struct platform_device *pdev)
+static void kirkwood_cpuidle_remove(struct platform_device *pdev)
 {
        cpuidle_unregister(&kirkwood_idle_driver);
-       return 0;
 }
 
 static struct platform_driver kirkwood_cpuidle_driver = {
        .probe = kirkwood_cpuidle_probe,
-       .remove = kirkwood_cpuidle_remove,
+       .remove_new = kirkwood_cpuidle_remove,
        .driver = {
                   .name = "kirkwood_cpuidle",
                   },