linux-kernel - [PATCH 12/29] platform/x86: hp: tc1100-wmi: Convert to platform remove callback returning void

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Date:   Thu,  2 Mar 2023 15:47:15 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Barnabás Pőcze <pobrn@...tonmail.com>,
        Jorge Lopez <jorge.lopez2@...com>
Cc:     kernel@...gutronix.de,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 12/29] platform/x86: hp: tc1100-wmi: 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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/platform/x86/hp/tc1100-wmi.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/hp/tc1100-wmi.c b/drivers/platform/x86/hp/tc1100-wmi.c
index ded26213c420..5298b0f6804f 100644
--- a/drivers/platform/x86/hp/tc1100-wmi.c
+++ b/drivers/platform/x86/hp/tc1100-wmi.c
@@ -170,11 +170,9 @@ static int __init tc1100_probe(struct platform_device *device)
 }
 
 
-static int tc1100_remove(struct platform_device *device)
+static void tc1100_remove(struct platform_device *device)
 {
 	sysfs_remove_group(&device->dev.kobj, &tc1100_attribute_group);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM
@@ -223,7 +221,7 @@ static struct platform_driver tc1100_driver = {
 		.pm = &tc1100_pm_ops,
 #endif
 	},
-	.remove = tc1100_remove,
+	.remove_new = tc1100_remove,
 };
 
 static int __init tc1100_init(void)
-- 
2.39.1