linux-kernel - [PATCH v2 35/61] mmc: meson-mx-sdio: Convert to platform remove callback returning void

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Message-Id: <20230726040041.26267-35-frank.li@vivo.com>
Date:   Wed, 26 Jul 2023 12:00:15 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.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-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 35/61] mmc: meson-mx-sdio: 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/meson-mx-sdio.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/meson-mx-sdio.c b/drivers/mmc/host/meson-mx-sdio.c
index 3a19a05ef55a..a11577f2ee69 100644
--- a/drivers/mmc/host/meson-mx-sdio.c
+++ b/drivers/mmc/host/meson-mx-sdio.c
@@ -728,7 +728,7 @@ static int meson_mx_mmc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int meson_mx_mmc_remove(struct platform_device *pdev)
+static void meson_mx_mmc_remove(struct platform_device *pdev)
 {
 	struct meson_mx_mmc_host *host = platform_get_drvdata(pdev);
 	struct device *slot_dev = mmc_dev(host->mmc);
@@ -743,8 +743,6 @@ static int meson_mx_mmc_remove(struct platform_device *pdev)
 	clk_disable_unprepare(host->core_clk);
 
 	mmc_free_host(host->mmc);
-
-	return 0;
 }
 
 static const struct of_device_id meson_mx_mmc_of_match[] = {
@@ -756,7 +754,7 @@ MODULE_DEVICE_TABLE(of, meson_mx_mmc_of_match);
 
 static struct platform_driver meson_mx_mmc_driver = {
 	.probe   = meson_mx_mmc_probe,
-	.remove  = meson_mx_mmc_remove,
+	.remove_new = meson_mx_mmc_remove,
 	.driver  = {
 		.name = "meson-mx-sdio",
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-- 
2.39.0