/* utility to simplify map/unmap of usb_requests to/from DMA */
+extern int usb_gadget_map_request_by_dev(struct device *dev,
+ struct usb_request *req, int is_in);
extern int usb_gadget_map_request(struct usb_gadget *gadget,
struct usb_request *req, int is_in);
+extern void usb_gadget_unmap_request_by_dev(struct device *dev,
+ struct usb_request *req, int is_in);
extern void usb_gadget_unmap_request(struct usb_gadget *gadget,
struct usb_request *req, int is_in);