linux-kernel - [PATCH v2 09/61] mmc: sdhci-pic32: Convert to platform remove callback returning void

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Message-Id: <20230726040041.26267-9-frank.li@vivo.com>
Date:   Wed, 26 Jul 2023 11:59:49 +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 v2 09/61] mmc: sdhci-pic32: 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-pic32.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-pic32.c b/drivers/mmc/host/sdhci-pic32.c
index 6696b6bdd88e..7a0351a9c74e 100644
--- a/drivers/mmc/host/sdhci-pic32.c
+++ b/drivers/mmc/host/sdhci-pic32.c
@@ -210,7 +210,7 @@ static int pic32_sdhci_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int pic32_sdhci_remove(struct platform_device *pdev)
+static void pic32_sdhci_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct pic32_sdhci_priv *sdhci_pdata = sdhci_priv(host);
@@ -221,8 +221,6 @@ static int pic32_sdhci_remove(struct platform_device *pdev)
 	clk_disable_unprepare(sdhci_pdata->base_clk);
 	clk_disable_unprepare(sdhci_pdata->sys_clk);
 	sdhci_pltfm_free(pdev);
-
-	return 0;
 }
 
 static const struct of_device_id pic32_sdhci_id_table[] = {
@@ -238,7 +236,7 @@ static struct platform_driver pic32_sdhci_driver = {
 		.of_match_table = of_match_ptr(pic32_sdhci_id_table),
 	},
 	.probe		= pic32_sdhci_probe,
-	.remove		= pic32_sdhci_remove,
+	.remove_new	= pic32_sdhci_remove,
 };
 
 module_platform_driver(pic32_sdhci_driver);
-- 
2.39.0