netdev - [PATCH net-next 3/5] ptp: ptp_idt82p33: Convert to platform remove callback returning void

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Message-ID:  <5807d0b11214b35f48908fd35cbb7b31b7655ba6.1712734365.git.u.kleine-koenig@pengutronix.de>
Date: Wed, 10 Apr 2024 09:34:52 +0200
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: Richard Cochran <richardcochran@...il.com>
Cc: netdev@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH net-next 3/5] ptp: ptp_idt82p33: 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@...gutronix.de>
---
 drivers/ptp/ptp_idt82p33.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/ptp/ptp_idt82p33.c b/drivers/ptp/ptp_idt82p33.c
index 057190b9cd3d..92bb42c43fb2 100644
--- a/drivers/ptp/ptp_idt82p33.c
+++ b/drivers/ptp/ptp_idt82p33.c
@@ -1447,15 +1447,13 @@ static int idt82p33_probe(struct platform_device *pdev)
 	return 0;
 }

-static int idt82p33_remove(struct platform_device *pdev)
+static void idt82p33_remove(struct platform_device *pdev)
 {
 	struct idt82p33 *idt82p33 = platform_get_drvdata(pdev);

 	cancel_delayed_work_sync(&idt82p33->extts_work);

 	idt82p33_ptp_clock_unregister_all(idt82p33);
-
-	return 0;
 }

 static struct platform_driver idt82p33_driver = {
@@ -1463,7 +1461,7 @@ static struct platform_driver idt82p33_driver = {
 		.name = "82p33x1x-phc",
 	},
 	.probe = idt82p33_probe,
-	.remove	= idt82p33_remove,
+	.remove_new = idt82p33_remove,
 };

 module_platform_driver(idt82p33_driver);
-- 
2.43.0