linux-kernel - [PATCH 23/27] thermal/drivers/stm: Convert to platform remove callback returning void

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Message-Id: <20230712081258.29254-23-frank.li@vivo.com>
Date:   Wed, 12 Jul 2023 16:12:54 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-pm@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 23/27] thermal/drivers/stm: 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.

Cc: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 drivers/thermal/st/stm_thermal.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/st/stm_thermal.c b/drivers/thermal/st/stm_thermal.c
index 903fcf1763f1..da6a25ce4469 100644
--- a/drivers/thermal/st/stm_thermal.c
+++ b/drivers/thermal/st/stm_thermal.c
@@ -571,14 +571,12 @@ static int stm_thermal_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int stm_thermal_remove(struct platform_device *pdev)
+static void stm_thermal_remove(struct platform_device *pdev)
 {
 	struct stm_thermal_sensor *sensor = platform_get_drvdata(pdev);
 
 	stm_thermal_sensor_off(sensor);
 	thermal_remove_hwmon_sysfs(sensor->th_dev);
-
-	return 0;
 }
 
 static struct platform_driver stm_thermal_driver = {
@@ -588,7 +586,7 @@ static struct platform_driver stm_thermal_driver = {
 		.of_match_table = stm_thermal_of_match,
 	},
 	.probe		= stm_thermal_probe,
-	.remove		= stm_thermal_remove,
+	.remove_new	= stm_thermal_remove,
 };
 module_platform_driver(stm_thermal_driver);
 
-- 
2.39.0