linux-kernel - [PATCH v3 53/62] mmc: pwrseq_simple: Convert to platform remove callback returning void

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Message-Id: <20230727070051.17778-53-frank.li@vivo.com>
Date:   Thu, 27 Jul 2023 15:00:42 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     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 v3 53/62] mmc: pwrseq_simple: 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/core/pwrseq_simple.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/core/pwrseq_simple.c b/drivers/mmc/core/pwrseq_simple.c
index 3bac1e71411b..df9588503ad0 100644
--- a/drivers/mmc/core/pwrseq_simple.c
+++ b/drivers/mmc/core/pwrseq_simple.c
@@ -142,18 +142,16 @@ static int mmc_pwrseq_simple_probe(struct platform_device *pdev)
 	return mmc_pwrseq_register(&pwrseq->pwrseq);
 }
 
-static int mmc_pwrseq_simple_remove(struct platform_device *pdev)
+static void mmc_pwrseq_simple_remove(struct platform_device *pdev)
 {
 	struct mmc_pwrseq_simple *pwrseq = platform_get_drvdata(pdev);
 
 	mmc_pwrseq_unregister(&pwrseq->pwrseq);
-
-	return 0;
 }
 
 static struct platform_driver mmc_pwrseq_simple_driver = {
 	.probe = mmc_pwrseq_simple_probe,
-	.remove = mmc_pwrseq_simple_remove,
+	.remove_new = mmc_pwrseq_simple_remove,
 	.driver = {
 		.name = "pwrseq_simple",
 		.of_match_table = mmc_pwrseq_simple_of_match,
-- 
2.39.0