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From:   =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>
To:     Lee Jones <lee@kernel.org>
Cc:     Tony Lindgren <tony@atomide.com>, linux-omap@vger.kernel.org,
        linux-kernel@vger.kernel.org, kernel@pengutronix.de
Subject: [PATCH v2 10/18] mfd: omap-usb-host: Convert to platform remove callback returning void
Date:   Thu, 23 Nov 2023 17:56:38 +0100
Message-ID: <20231123165627.492259-11-u.kleine-koenig@pengutronix.de>
In-Reply-To: <20231123165627.492259-1-u.kleine-koenig@pengutronix.de>
References: <20231123165627.492259-1-u.kleine-koenig@pengutronix.de>
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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/mfd/omap-usb-host.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 78f1bb55dbc0..ebc62033db16 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -816,13 +816,12 @@ static int usbhs_omap_remove_child(struct device *dev, void *data)
  *
  * Reverses the effect of usbhs_omap_probe().
  */
-static int usbhs_omap_remove(struct platform_device *pdev)
+static void usbhs_omap_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
 
 	/* remove children */
 	device_for_each_child(&pdev->dev, NULL, usbhs_omap_remove_child);
-	return 0;
 }
 
 static const struct dev_pm_ops usbhsomap_dev_pm_ops = {
@@ -845,7 +844,7 @@ static struct platform_driver usbhs_omap_driver = {
 		.of_match_table = usbhs_omap_dt_ids,
 	},
 	.probe		= usbhs_omap_probe,
-	.remove		= usbhs_omap_remove,
+	.remove_new	= usbhs_omap_remove,
 };
 
 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
-- 
2.42.0