linux-kernel - [PATCH 16/29] platform/x86: intel: chtdc_ti_pwrbtn: Convert to platform remove callback returning void

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Date:   Thu,  2 Mar 2023 15:47:19 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>
Cc:     kernel@...gutronix.de,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 16/29] platform/x86: intel: chtdc_ti_pwrbtn: 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/intel/chtdc_ti_pwrbtn.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/intel/chtdc_ti_pwrbtn.c b/drivers/platform/x86/intel/chtdc_ti_pwrbtn.c
index 9606a994af22..615f8d1a0c68 100644
--- a/drivers/platform/x86/intel/chtdc_ti_pwrbtn.c
+++ b/drivers/platform/x86/intel/chtdc_ti_pwrbtn.c
@@ -67,11 +67,10 @@ static int chtdc_ti_pwrbtn_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int chtdc_ti_pwrbtn_remove(struct platform_device *pdev)
+static void chtdc_ti_pwrbtn_remove(struct platform_device *pdev)
 {
 	dev_pm_clear_wake_irq(&pdev->dev);
 	device_init_wakeup(&pdev->dev, false);
-	return 0;
 }
 
 static const struct platform_device_id chtdc_ti_pwrbtn_id_table[] = {
@@ -85,7 +84,7 @@ static struct platform_driver chtdc_ti_pwrbtn_driver = {
 		.name	= KBUILD_MODNAME,
 	},
 	.probe		= chtdc_ti_pwrbtn_probe,
-	.remove		= chtdc_ti_pwrbtn_remove,
+	.remove_new	= chtdc_ti_pwrbtn_remove,
 	.id_table	= chtdc_ti_pwrbtn_id_table,
 };
 module_platform_driver(chtdc_ti_pwrbtn_driver);
-- 
2.39.1