linux-kernel - [PATCH 15/58] mmc: sdhci-pxav3: Convert to platform remove callback returning void

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Message-Id: <20230713080807.69999-15-frank.li@vivo.com>
Date:   Thu, 13 Jul 2023 16:07:24 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        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 15/58] mmc: sdhci-pxav3: 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/sdhci-pxav3.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index e39dcc998772..3af43ac05825 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -470,7 +470,7 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int sdhci_pxav3_remove(struct platform_device *pdev)
+static void sdhci_pxav3_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -486,8 +486,6 @@ static int sdhci_pxav3_remove(struct platform_device *pdev)
 	clk_disable_unprepare(pxa->clk_core);
 
 	sdhci_pltfm_free(pdev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -570,7 +568,7 @@ static struct platform_driver sdhci_pxav3_driver = {
 		.pm	= &sdhci_pxav3_pmops,
 	},
 	.probe		= sdhci_pxav3_probe,
-	.remove		= sdhci_pxav3_remove,
+	.remove_new	= sdhci_pxav3_remove,
 };
 
 module_platform_driver(sdhci_pxav3_driver);
-- 
2.39.0