[PATCH 2/6] usb: gadget: Drop usb_udc_release()

[Marek Vasut]

This callback is never called, drop it. Instead, call kfree(udc)
in usb_del_gadget_udc() to free the struct usb_udc data.

Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
---
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Lukasz Majewski <lukma at denx.de>
Cc: Mattijs Korpershoek <mkorpershoek at baylibre.com>
Cc: Miquel Raynal <miquel.raynal at bootlin.com>
Cc: Neil Armstrong <neil.armstrong at linaro.org>
Cc: Nishanth Menon <nm at ti.com>
Cc: Zixun LI <admin at hifiphile.com>
---
 drivers/usb/gadget/udc/udc-core.c | 19 +------------------
 1 file changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index 37c0ee43c52..275d6fe7be8 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -41,7 +41,6 @@ struct usb_udc {
 	struct list_head		list;
 };
 
-static struct class *udc_class;
 static LIST_HEAD(udc_list);
 DEFINE_MUTEX(udc_lock);
 
@@ -150,21 +149,6 @@ static inline void usb_gadget_udc_stop(struct usb_udc *udc)
 	udc->gadget->ops->udc_stop(udc->gadget);
 }
 
-/**
- * usb_udc_release - release the usb_udc struct
- * @dev: the dev member within usb_udc
- *
- * This is called by driver's core in order to free memory once the last
- * reference is released.
- */
-static void usb_udc_release(struct device *dev)
-{
-	struct usb_udc *udc;
-
-	udc = container_of(dev, struct usb_udc, dev);
-	kfree(udc);
-}
-
 /**
  * usb_add_gadget_udc - adds a new gadget to the udc class driver list
  * @parent: the parent device to this udc. Usually the controller driver's
@@ -185,8 +169,6 @@ int usb_add_gadget_udc(struct device *parent, struct usb_gadget *gadget)
 	dev_set_name(&gadget->dev, "gadget");
 	gadget->dev.parent = parent;
 
-	udc->dev.release = usb_udc_release;
-	udc->dev.class = udc_class;
 	udc->dev.parent = parent;
 
 	udc->gadget = gadget;
@@ -247,6 +229,7 @@ found:
 
 	if (udc->driver)
 		usb_gadget_remove_driver(udc);
+	kfree(udc);
 }
 EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
 
-- 
2.45.2