Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:3 as permitted sender) client-ip=2620:137:e000::3:3;
From:   =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>
To:     Herve Codina <herve.codina@bootlin.com>,
        Qiang Zhao <qiang.zhao@nxp.com>, Li Yang <leoyang.li@nxp.com>
Cc:     linuxppc-dev@lists.ozlabs.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        kernel@pengutronix.de
Subject: [PATCH 06/40] soc/fsl: cpm: qmc: Convert to platform remove callback returning void
Date:   Mon, 25 Sep 2023 11:54:57 +0200
Message-Id: <20230925095532.1984344-7-u.kleine-koenig@pengutronix.de>
In-Reply-To: <20230925095532.1984344-1-u.kleine-koenig@pengutronix.de>
References: <20230925095532.1984344-1-u.kleine-koenig@pengutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

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@pengutronix.de>
---
 drivers/soc/fsl/qe/qmc.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
index b3c292c9a14e..92ec76c03965 100644
--- a/drivers/soc/fsl/qe/qmc.c
+++ b/drivers/soc/fsl/qe/qmc.c
@@ -1415,7 +1415,7 @@ static int qmc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int qmc_remove(struct platform_device *pdev)
+static void qmc_remove(struct platform_device *pdev)
 {
 	struct qmc *qmc = platform_get_drvdata(pdev);
 
@@ -1427,8 +1427,6 @@ static int qmc_remove(struct platform_device *pdev)
 
 	/* Disconnect the serial from TSA */
 	tsa_serial_disconnect(qmc->tsa_serial);
-
-	return 0;
 }
 
 static const struct of_device_id qmc_id_table[] = {
@@ -1443,7 +1441,7 @@ static struct platform_driver qmc_driver = {
 		.of_match_table = of_match_ptr(qmc_id_table),
 	},
 	.probe = qmc_probe,
-	.remove = qmc_remove,
+	.remove_new = qmc_remove,
 };
 module_platform_driver(qmc_driver);
 
-- 
2.40.1