macintosh: windfarm_pm72: 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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/0406f1db35f23f66fa8a5f8c756fa456601795c4.1704900449.git.u.kleine-koenig@pengutronix.de

diff --git a/drivers/macintosh/windfarm_pm72.c b/drivers/macintosh/windfarm_pm72.c
index e21f973551cc25206687861323ab219948774a39..14fa1e9ac3e00489ce2340f5f72405d50c1f1c94 100644 (file)
--- a/drivers/macintosh/windfarm_pm72.c
+++ b/drivers/macintosh/windfarm_pm72.c
@@ -775,17 +775,14 @@ static int wf_pm72_probe(struct platform_device *dev)
        return 0;
 }
 
-static int wf_pm72_remove(struct platform_device *dev)
+static void wf_pm72_remove(struct platform_device *dev)
 {
        wf_unregister_client(&pm72_events);
-
-       /* should release all sensors and controls */
-       return 0;
 }
 
 static struct platform_driver wf_pm72_driver = {
        .probe  = wf_pm72_probe,
-       .remove = wf_pm72_remove,
+       .remove_new = wf_pm72_remove,
        .driver = {
                .name = "windfarm",
        },