PM / devfreq: exynos-nocp: 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: Chanwoo Choi <cw00.choi@samsung.com>

diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c
index c1cc23bcb995ccd4929a34eb554c2022543e9409..5edc522f715c3e1e1cd334cc66dae5f5ab9018a6 100644 (file)
--- a/drivers/devfreq/event/exynos-nocp.c
+++ b/drivers/devfreq/event/exynos-nocp.c
@@ -275,18 +275,16 @@ static int exynos_nocp_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int exynos_nocp_remove(struct platform_device *pdev)
+static void exynos_nocp_remove(struct platform_device *pdev)
 {
        struct exynos_nocp *nocp = platform_get_drvdata(pdev);
 
        clk_disable_unprepare(nocp->clk);
-
-       return 0;
 }
 
 static struct platform_driver exynos_nocp_driver = {
        .probe  = exynos_nocp_probe,
-       .remove = exynos_nocp_remove,
+       .remove_new = exynos_nocp_remove,
        .driver = {
                .name   = "exynos-nocp",
                .of_match_table = exynos_nocp_id_match,