linux-kernel - [PATCH v3 50/62] mmc: sdhci-spear: Convert to platform remove callback returning void

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230727070051.17778-50-frank.li@vivo.com>
Date:   Thu, 27 Jul 2023 15:00:39 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        Viresh Kumar <vireshk@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 50/62] mmc: sdhci-spear: 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>
Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
---
 drivers/mmc/host/sdhci-spear.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index c79035727b20..ec6c7d8e3736 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -117,7 +117,7 @@ static int sdhci_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int sdhci_remove(struct platform_device *pdev)
+static void sdhci_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct spear_sdhci *sdhci = sdhci_priv(host);
@@ -131,8 +131,6 @@ static int sdhci_remove(struct platform_device *pdev)
 	sdhci_remove_host(host, dead);
 	clk_disable_unprepare(sdhci->clk);
 	sdhci_free_host(host);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -186,7 +184,7 @@ static struct platform_driver sdhci_driver = {
 		.of_match_table = of_match_ptr(sdhci_spear_id_table),
 	},
 	.probe		= sdhci_probe,
-	.remove		= sdhci_remove,
+	.remove_new	= sdhci_remove,
 };
 
 module_platform_driver(sdhci_driver);
-- 
2.39.0