struct class_device *class_dev; /* class device for this bus */
struct kref kref; /* handles reference counting this bus */
void (*release)(struct usb_bus *bus); /* function to destroy this bus's memory */
struct class_device *class_dev; /* class device for this bus */
struct kref kref; /* handles reference counting this bus */
void (*release)(struct usb_bus *bus); /* function to destroy this bus's memory */