linux-kernel - [PATCH 14/58] mmc: dw_mmc: exynos: Convert to platform remove callback returning void

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Message-Id: <20230713080807.69999-14-frank.li@vivo.com>
Date:   Thu, 13 Jul 2023 16:07:23 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-mmc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 14/58] mmc: dw_mmc: exynos: 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/dw_mmc-exynos.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 9f20ac524c8b..698408e8bad0 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -664,15 +664,13 @@ static int dw_mci_exynos_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int dw_mci_exynos_remove(struct platform_device *pdev)
+static void dw_mci_exynos_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 
 	dw_mci_pltfm_remove(pdev);
-
-	return 0;
 }
 
 static const struct dev_pm_ops dw_mci_exynos_pmops = {
@@ -685,7 +683,7 @@ static const struct dev_pm_ops dw_mci_exynos_pmops = {
 
 static struct platform_driver dw_mci_exynos_pltfm_driver = {
 	.probe		= dw_mci_exynos_probe,
-	.remove		= dw_mci_exynos_remove,
+	.remove_new	= dw_mci_exynos_remove,
 	.driver		= {
 		.name		= "dwmmc_exynos",
 		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,
-- 
2.39.0