linux-kernel - [PATCH 07/20] pinctrl: nomadik: abx500: Convert to platform remove callback returning void

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Message-Id: <20231009083856.222030-8-u.kleine-koenig@pengutronix.de>
Date:   Mon,  9 Oct 2023 10:38:43 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 07/20] pinctrl: nomadik: abx500: 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/pinctrl/nomadik/pinctrl-abx500.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/nomadik/pinctrl-abx500.c b/drivers/pinctrl/nomadik/pinctrl-abx500.c
index 6b90051af206..233857d54403 100644
--- a/drivers/pinctrl/nomadik/pinctrl-abx500.c
+++ b/drivers/pinctrl/nomadik/pinctrl-abx500.c
@@ -1079,12 +1079,11 @@ static int abx500_gpio_probe(struct platform_device *pdev)
  * abx500_gpio_remove() - remove Ab8500-gpio driver
  * @pdev:	Platform device registered
  */
-static int abx500_gpio_remove(struct platform_device *pdev)
+static void abx500_gpio_remove(struct platform_device *pdev)
 {
 	struct abx500_pinctrl *pct = platform_get_drvdata(pdev);
 
 	gpiochip_remove(&pct->chip);
-	return 0;
 }
 
 static struct platform_driver abx500_gpio_driver = {
@@ -1093,7 +1092,7 @@ static struct platform_driver abx500_gpio_driver = {
 		.of_match_table = abx500_gpio_match,
 	},
 	.probe = abx500_gpio_probe,
-	.remove = abx500_gpio_remove,
+	.remove_new = abx500_gpio_remove,
 };
 
 static int __init abx500_gpio_init(void)
-- 
2.40.1