linux-kernel - [PATCH 28/58] mmc: sdhci-of-dwcmshc: Convert to platform remove callback returning void

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Message-Id: <20230713080807.69999-28-frank.li@vivo.com>
Date:   Thu, 13 Jul 2023 16:07:37 +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 28/58] mmc: sdhci-of-dwcmshc: 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-of-dwcmshc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index e68cd87998c8..5cfd24cd33fc 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -574,7 +574,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
 	return err;
 }
 
-static int dwcmshc_remove(struct platform_device *pdev)
+static void dwcmshc_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -589,8 +589,6 @@ static int dwcmshc_remove(struct platform_device *pdev)
 		clk_bulk_disable_unprepare(RK35xx_MAX_CLKS,
 					   rk_priv->rockchip_clks);
 	sdhci_pltfm_free(pdev);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -657,7 +655,7 @@ static struct platform_driver sdhci_dwcmshc_driver = {
 		.pm = &dwcmshc_pmops,
 	},
 	.probe	= dwcmshc_probe,
-	.remove	= dwcmshc_remove,
+	.remove_new = dwcmshc_remove,
 };
 module_platform_driver(sdhci_dwcmshc_driver);
 
-- 
2.39.0