um: rtc: 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>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>

diff --git a/arch/um/drivers/rtc_kern.c b/arch/um/drivers/rtc_kern.c
index 97ceb205cfe66039d7682dcad7eace7806f223dd..3a1582219c4b85a1432ff4a127b85d76fd54a542 100644 (file)
--- a/arch/um/drivers/rtc_kern.c
+++ b/arch/um/drivers/rtc_kern.c
@@ -168,16 +168,15 @@ cleanup:
        return err;
 }
 
-static int uml_rtc_remove(struct platform_device *pdev)
+static void uml_rtc_remove(struct platform_device *pdev)
 {
        device_init_wakeup(&pdev->dev, 0);
        uml_rtc_cleanup();
-       return 0;
 }
 
 static struct platform_driver uml_rtc_driver = {
        .probe = uml_rtc_probe,
-       .remove = uml_rtc_remove,
+       .remove_new = uml_rtc_remove,
        .driver = {
                .name = "uml-rtc",
        },