linux-kernel - [PATCH 02/15] memory: brcmstb_memc: Convert to platform remove callback returning void

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Message-ID:  <e4f3c86270161ce231cd0e4f3be9c632578e17a2.1702822744.git.u.kleine-koenig@pengutronix.de>
Date: Sun, 17 Dec 2023 15:29:28 +0100
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: kernel@...gutronix.de,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 02/15] memory: brcmstb_memc: 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/memory/brcmstb_memc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/memory/brcmstb_memc.c b/drivers/memory/brcmstb_memc.c
index a6ea51996522..ea9213f7152e 100644
--- a/drivers/memory/brcmstb_memc.c
+++ b/drivers/memory/brcmstb_memc.c
@@ -152,13 +152,11 @@ static int brcmstb_memc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int brcmstb_memc_remove(struct platform_device *pdev)
+static void brcmstb_memc_remove(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 
 	sysfs_remove_group(&dev->kobj, &dev_attr_group);
-
-	return 0;
 }
 
 enum brcmstb_memc_hwtype {
@@ -284,7 +282,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(brcmstb_memc_pm_ops, brcmstb_memc_suspend,
 
 static struct platform_driver brcmstb_memc_driver = {
 	.probe = brcmstb_memc_probe,
-	.remove = brcmstb_memc_remove,
+	.remove_new = brcmstb_memc_remove,
 	.driver = {
 		.name		= "brcmstb_memc",
 		.of_match_table	= brcmstb_memc_of_match,
-- 
2.42.0