thermal: 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 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>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/thermal/kirkwood_thermal.c b/drivers/thermal/kirkwood_thermal.c
index acb10d24256d2a6304c49f0c398b51de3d4a301d..a18158ebe65f63c0bec85130d3186379b3d8cc95 100644 (file)
--- a/drivers/thermal/kirkwood_thermal.c
+++ b/drivers/thermal/kirkwood_thermal.c
@@ -90,21 +90,19 @@ static int kirkwood_thermal_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int kirkwood_thermal_exit(struct platform_device *pdev)
+static void kirkwood_thermal_exit(struct platform_device *pdev)
 {
        struct thermal_zone_device *kirkwood_thermal =
                platform_get_drvdata(pdev);
 
        thermal_zone_device_unregister(kirkwood_thermal);
-
-       return 0;
 }
 
 MODULE_DEVICE_TABLE(of, kirkwood_thermal_id_table);
 
 static struct platform_driver kirkwood_thermal_driver = {
        .probe = kirkwood_thermal_probe,
-       .remove = kirkwood_thermal_exit,
+       .remove_new = kirkwood_thermal_exit,
        .driver = {
                .name = "kirkwood_thermal",
                .of_match_table = kirkwood_thermal_id_table,