linux-kernel - [PATCH 07/19] cpufreq: scpi: Convert to platform remove callback returning void

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Message-Id: <20230712093322.37322-7-frank.li@vivo.com>
Date:   Wed, 12 Jul 2023 17:33:10 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 07/19] cpufreq: scpi: 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/cpufreq/scpi-cpufreq.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index fd2c16821d54..28f1e0490af1 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -208,11 +208,10 @@ static int scpi_cpufreq_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int scpi_cpufreq_remove(struct platform_device *pdev)
+static void scpi_cpufreq_remove(struct platform_device *pdev)
 {
 	cpufreq_unregister_driver(&scpi_cpufreq_driver);
 	scpi_ops = NULL;
-	return 0;
 }
 
 static struct platform_driver scpi_cpufreq_platdrv = {
@@ -220,7 +219,7 @@ static struct platform_driver scpi_cpufreq_platdrv = {
 		.name	= "scpi-cpufreq",
 	},
 	.probe		= scpi_cpufreq_probe,
-	.remove		= scpi_cpufreq_remove,
+	.remove_new	= scpi_cpufreq_remove,
 };
 module_platform_driver(scpi_cpufreq_platdrv);
 
-- 
2.39.0