[PATCH v4 1/3] usb: gadget: rcar: Fix gadget registration lifecycle in remove

[Michele Bisogno <micbis.openwrt@gmail.com>]

The driver currently fails to unregister the USB gadget when the
device is removed or the driver is unbound. This leads to dangling
pointers in the UDC core and potential memory corruption.

Add a call to usb_del_gadget_udc() in the remove path to ensure
a clean teardown of the gadget interface.

Signed-off-by: Michele Bisogno <micbis.openwrt@gmail.com>
---
 drivers/usb/gadget/rcar/common.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/gadget/rcar/common.c b/drivers/usb/gadget/rcar/common.c
index 2ba022a3f2c..f7b34f0485f 100644
--- a/drivers/usb/gadget/rcar/common.c
+++ b/drivers/usb/gadget/rcar/common.c
@@ -447,8 +447,12 @@ err_clk:
 static int usbhs_udc_otg_remove(struct udevice *dev)
 {
 	struct usbhs_priv_otg_data *priv = dev_get_priv(dev);
+	struct usb_gadget *gadget;
 
 	usbhs_rcar3_power_ctrl(&priv->usbhs_priv, false);
+	gadget = usbhsg_get_gadget(&priv->usbhs_priv);
+	if (gadget)
+		usb_del_gadget_udc(gadget);
 	usbhs_mod_remove(&priv->usbhs_priv);
 	usbhs_fifo_remove(&priv->usbhs_priv);
 	usbhs_pipe_remove(&priv->usbhs_priv);
-- 
2.34.1