linux-kernel - [PATCH 18/19] cpufreq: qoriq: Convert to platform remove callback returning void

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Message-Id: <20230712093322.37322-18-frank.li@vivo.com>
Date:   Wed, 12 Jul 2023 17:33:21 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     "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-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 18/19] cpufreq: qoriq: 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/qoriq-cpufreq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/qoriq-cpufreq.c b/drivers/cpufreq/qoriq-cpufreq.c
index 573b417e1483..0aecaecbb0e6 100644
--- a/drivers/cpufreq/qoriq-cpufreq.c
+++ b/drivers/cpufreq/qoriq-cpufreq.c
@@ -288,11 +288,9 @@ static int qoriq_cpufreq_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int qoriq_cpufreq_remove(struct platform_device *pdev)
+static void qoriq_cpufreq_remove(struct platform_device *pdev)
 {
 	cpufreq_unregister_driver(&qoriq_cpufreq_driver);
-
-	return 0;
 }
 
 static struct platform_driver qoriq_cpufreq_platform_driver = {
@@ -300,7 +298,7 @@ static struct platform_driver qoriq_cpufreq_platform_driver = {
 		.name = "qoriq-cpufreq",
 	},
 	.probe = qoriq_cpufreq_probe,
-	.remove = qoriq_cpufreq_remove,
+	.remove_new = qoriq_cpufreq_remove,
 };
 module_platform_driver(qoriq_cpufreq_platform_driver);
 
-- 
2.39.0