static int usb_serial_initfn(USBDevice *dev) { USBSerialState *s = DO_UPCAST(USBSerialState, dev, dev); s->dev.speed = USB_SPEED_FULL; qemu_chr_add_handlers(s->cs, usb_serial_can_read, usb_serial_read, usb_serial_event, s); usb_serial_handle_reset(dev); return 0;