pwm: rockchip: 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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index 7f084eb34092342d6e7868a3da394df64036d99f..c1a1f2d864b5ecb107cbac91fc74cd69bba831ef 100644 (file)
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -376,7 +376,7 @@ err_clk:
        return ret;
 }
 
-static int rockchip_pwm_remove(struct platform_device *pdev)
+static void rockchip_pwm_remove(struct platform_device *pdev)
 {
        struct rockchip_pwm_chip *pc = platform_get_drvdata(pdev);
 
@@ -384,8 +384,6 @@ static int rockchip_pwm_remove(struct platform_device *pdev)
 
        clk_unprepare(pc->pclk);
        clk_unprepare(pc->clk);
-
-       return 0;
 }
 
 static struct platform_driver rockchip_pwm_driver = {
@@ -394,7 +392,7 @@ static struct platform_driver rockchip_pwm_driver = {
                .of_match_table = rockchip_pwm_dt_ids,
        },
        .probe = rockchip_pwm_probe,
-       .remove = rockchip_pwm_remove,
+       .remove_new = rockchip_pwm_remove,
 };
 module_platform_driver(rockchip_pwm_driver);