linux-kernel - [PATCH 13/40] soc/loongson: loongson2_guts: Convert to platform remove callback returning void

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Message-Id: <20230925095532.1984344-14-u.kleine-koenig@pengutronix.de>
Date:   Mon, 25 Sep 2023 11:55:04 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Yinbo Zhu <zhuyinbo@...ngson.cn>
Cc:     loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: [PATCH 13/40] soc/loongson: loongson2_guts: 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 ignored (apart
from emitting a warning) 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. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/soc/loongson/loongson2_guts.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/loongson/loongson2_guts.c b/drivers/soc/loongson/loongson2_guts.c
index bace4bc8e03b..48f8382888a7 100644
--- a/drivers/soc/loongson/loongson2_guts.c
+++ b/drivers/soc/loongson/loongson2_guts.c
@@ -150,11 +150,9 @@ static int loongson2_guts_probe(struct platform_device *pdev)
 	return 0;
 }

-static int loongson2_guts_remove(struct platform_device *dev)
+static void loongson2_guts_remove(struct platform_device *dev)
 {
 	soc_device_unregister(soc_dev);
-
-	return 0;
 }

 /*
@@ -173,7 +171,7 @@ static struct platform_driver loongson2_guts_driver = {
 		.of_match_table = loongson2_guts_of_match,
 	},
 	.probe = loongson2_guts_probe,
-	.remove = loongson2_guts_remove,
+	.remove_new = loongson2_guts_remove,
 };

 static int __init loongson2_guts_init(void)
-- 
2.40.1