linux-kernel - [PATCH 06/27] thermal/drivers/mediatek/lvts_thermal: Convert to platform remove callback returning void

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Date:   Wed, 12 Jul 2023 16:12:37 +0800
From:   Yangtao Li <frank.li@...o.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Yangtao Li <frank.li@...o.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH 06/27] thermal/drivers/mediatek/lvts_thermal: 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/thermal/mediatek/lvts_thermal.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index b693fac2d677..5dfa69c7669e 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -1158,7 +1158,7 @@ static int lvts_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int lvts_remove(struct platform_device *pdev)
+static void lvts_remove(struct platform_device *pdev)
 {
 	struct lvts_domain *lvts_td;
 	int i;
@@ -1169,8 +1169,6 @@ static int lvts_remove(struct platform_device *pdev)
 		lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false);
 
 	lvts_debugfs_exit(lvts_td);
-
-	return 0;
 }
 
 static const struct lvts_ctrl_data mt8195_lvts_mcu_data_ctrl[] = {
@@ -1271,7 +1269,7 @@ MODULE_DEVICE_TABLE(of, lvts_of_match);
 
 static struct platform_driver lvts_driver = {
 	.probe = lvts_probe,
-	.remove = lvts_remove,
+	.remove_new = lvts_remove,
 	.driver = {
 		.name = "mtk-lvts-thermal",
 		.of_match_table = lvts_of_match,
-- 
2.39.0