testdev_to_usbdev
struct usb_device *udev = testdev_to_usbdev(dev);
urb = simple_alloc_urb(testdev_to_usbdev(dev), pipe, size, 0);
struct usb_device *udev = testdev_to_usbdev(dev);
struct usb_device *udev = testdev_to_usbdev(dev);
struct usb_device *udev = testdev_to_usbdev(dev);
udev = testdev_to_usbdev(dev);
udev = testdev_to_usbdev(dev);
udev = testdev_to_usbdev(dev);
struct urb *urb = usbtest_alloc_urb(testdev_to_usbdev(tdev),
struct usb_device *udev = testdev_to_usbdev(dev);
struct usb_device *udev = testdev_to_usbdev(tdev);