linux-kernel - [PATCH 23/30] clk: renesas: Convert to platform remove callback returning void

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230312161512.2715500-24-u.kleine-koenig@pengutronix.de>
Date:   Sun, 12 Mar 2023 17:15:05 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 23/30] clk: renesas: 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@...gutronix.de>
---
 drivers/clk/renesas/rcar-usb2-clock-sel.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/rcar-usb2-clock-sel.c b/drivers/clk/renesas/rcar-usb2-clock-sel.c
index 684d8937965e..17c110978e33 100644
--- a/drivers/clk/renesas/rcar-usb2-clock-sel.c
+++ b/drivers/clk/renesas/rcar-usb2-clock-sel.c
@@ -125,15 +125,13 @@ static int rcar_usb2_clock_sel_resume(struct device *dev)
 	return 0;
 }
 
-static int rcar_usb2_clock_sel_remove(struct platform_device *pdev)
+static void rcar_usb2_clock_sel_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 
 	of_clk_del_provider(dev->of_node);
 	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
-
-	return 0;
 }
 
 static int rcar_usb2_clock_sel_probe(struct platform_device *pdev)
@@ -215,7 +213,7 @@ static struct platform_driver rcar_usb2_clock_sel_driver = {
 		.pm	= &rcar_usb2_clock_sel_pm_ops,
 	},
 	.probe		= rcar_usb2_clock_sel_probe,
-	.remove		= rcar_usb2_clock_sel_remove,
+	.remove_new	= rcar_usb2_clock_sel_remove,
 };
 builtin_platform_driver(rcar_usb2_clock_sel_driver);
 
-- 
2.39.1