linux-kernel - [PATCH 44/58] mmc: wbsd: Convert to platform remove callback returning void

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Message-Id: <20230713080807.69999-44-frank.li@vivo.com>
Date:   Thu, 13 Jul 2023 16:07:53 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Pierre Ossman <pierre@...man.eu>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 44/58] mmc: wbsd: 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/mmc/host/wbsd.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index 521af9251f33..f361cefcee01 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -1758,11 +1758,9 @@ static int wbsd_probe(struct platform_device *dev)
 	return wbsd_init(&dev->dev, param_io, param_irq, param_dma, 0);
 }
 
-static int wbsd_remove(struct platform_device *dev)
+static void wbsd_remove(struct platform_device *dev)
 {
 	wbsd_shutdown(&dev->dev, 0);
-
-	return 0;
 }
 
 /*
@@ -1904,8 +1902,7 @@ static struct platform_device *wbsd_device;
 
 static struct platform_driver wbsd_driver = {
 	.probe		= wbsd_probe,
-	.remove		= wbsd_remove,
-
+	.remove_new	= wbsd_remove,
 	.suspend	= wbsd_platform_suspend,
 	.resume		= wbsd_platform_resume,
 	.driver		= {
-- 
2.39.0