linux-kernel - [PATCH 05/19] cpufreq: imx6q: Convert to platform remove callback returning void

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Message-Id: <20230712093322.37322-5-frank.li@vivo.com>
Date:   Wed, 12 Jul 2023 17:33:08 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 05/19] cpufreq: imx6q: 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/imx6q-cpufreq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 9fb1501033bb..494d044b9e72 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -519,7 +519,7 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int imx6q_cpufreq_remove(struct platform_device *pdev)
+static void imx6q_cpufreq_remove(struct platform_device *pdev)
 {
 	cpufreq_unregister_driver(&imx6q_cpufreq_driver);
 	dev_pm_opp_free_cpufreq_table(cpu_dev, &freq_table);
@@ -530,8 +530,6 @@ static int imx6q_cpufreq_remove(struct platform_device *pdev)
 	regulator_put(soc_reg);
 
 	clk_bulk_put(num_clks, clks);
-
-	return 0;
 }
 
 static struct platform_driver imx6q_cpufreq_platdrv = {
@@ -539,7 +537,7 @@ static struct platform_driver imx6q_cpufreq_platdrv = {
 		.name	= "imx6q-cpufreq",
 	},
 	.probe		= imx6q_cpufreq_probe,
-	.remove		= imx6q_cpufreq_remove,
+	.remove_new	= imx6q_cpufreq_remove,
 };
 module_platform_driver(imx6q_cpufreq_platdrv);
 
-- 
2.39.0