linux-kernel - [PATCH 13/58] mmc: omap: Convert to platform remove callback returning void

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Message-Id: <20230713080807.69999-13-frank.li@vivo.com>
Date:   Thu, 13 Jul 2023 16:07:22 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Aaro Koskinen <aaro.koskinen@....fi>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-omap@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 13/58] mmc: omap: 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/omap.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 6a259563690d..9fb8995b43a1 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1506,7 +1506,7 @@ static int mmc_omap_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int mmc_omap_remove(struct platform_device *pdev)
+static void mmc_omap_remove(struct platform_device *pdev)
 {
 	struct mmc_omap_host *host = platform_get_drvdata(pdev);
 	int i;
@@ -1532,8 +1532,6 @@ static int mmc_omap_remove(struct platform_device *pdev)
 		dma_release_channel(host->dma_rx);
 
 	destroy_workqueue(host->mmc_omap_wq);
-
-	return 0;
 }
 
 #if IS_BUILTIN(CONFIG_OF)
@@ -1546,7 +1544,7 @@ MODULE_DEVICE_TABLE(of, mmc_omap_match);
 
 static struct platform_driver mmc_omap_driver = {
 	.probe		= mmc_omap_probe,
-	.remove		= mmc_omap_remove,
+	.remove_new	= mmc_omap_remove,
 	.driver		= {
 		.name	= DRIVER_NAME,
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-- 
2.39.0