linux-kernel - [PATCH 05/40] soc/fsl: dpaa2-console: Convert to platform remove callback returning void

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Message-Id: <20230925095532.1984344-6-u.kleine-koenig@pengutronix.de>
Date:   Mon, 25 Sep 2023 11:54:56 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Li Yang <leoyang.li@....com>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...gutronix.de
Subject: [PATCH 05/40] soc/fsl: dpaa2-console: 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/fsl/dpaa2-console.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/fsl/dpaa2-console.c b/drivers/soc/fsl/dpaa2-console.c
index 1dca693b6b38..6dbc77db7718 100644
--- a/drivers/soc/fsl/dpaa2-console.c
+++ b/drivers/soc/fsl/dpaa2-console.c
@@ -300,12 +300,10 @@ static int dpaa2_console_probe(struct platform_device *pdev)
 	return error;
 }

-static int dpaa2_console_remove(struct platform_device *pdev)
+static void dpaa2_console_remove(struct platform_device *pdev)
 {
 	misc_deregister(&dpaa2_mc_console_dev);
 	misc_deregister(&dpaa2_aiop_console_dev);
-
-	return 0;
 }

 static const struct of_device_id dpaa2_console_match_table[] = {
@@ -322,7 +320,7 @@ static struct platform_driver dpaa2_console_driver = {
 		   .of_match_table = dpaa2_console_match_table,
 		   },
 	.probe = dpaa2_console_probe,
-	.remove = dpaa2_console_remove,
+	.remove_new = dpaa2_console_remove,
 };
 module_platform_driver(dpaa2_console_driver);

-- 
2.40.1