linux-kernel - [PATCH 3/5] usb: gadget: udc: renesas

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Message-ID: <20250724091910.21092-4-johan@kernel.org>
Date: Thu, 24 Jul 2025 11:19:08 +0200
From: Johan Hovold <johan@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
	Bin Liu <b-liu@...com>
Cc: Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>,
	stable@...r.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: [PATCH 3/5] usb: gadget: udc: renesas_usb3: fix device leak at unbind

Make sure to drop the reference to the companion device taken during
probe when the driver is unbound.

Fixes: 39facfa01c9f ("usb: gadget: udc: renesas_usb3: Add register of usb role switch")
Cc: stable@...r.kernel.org	# 4.19
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/usb/gadget/udc/renesas_usb3.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 3e4d56457597..d23b1762e0e4 100644
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -2657,6 +2657,7 @@ static void renesas_usb3_remove(struct platform_device *pdev)
 	struct renesas_usb3 *usb3 = platform_get_drvdata(pdev);
 
 	debugfs_remove_recursive(usb3->dentry);
+	put_device(usb3->host_dev);
 	device_remove_file(&pdev->dev, &dev_attr_role);
 
 	cancel_work_sync(&usb3->role_work);
-- 
2.49.1