usbd_set_polling  881 dev/usb/ukbd.c 	usbd_set_polling(dev, on);
usbd_set_polling  243 dev/usb/umass_scsi.c 		usbd_set_polling(sc->sc_udev, 1);
usbd_set_polling  265 dev/usb/umass_scsi.c 		usbd_set_polling(sc->sc_udev, 0);
usbd_set_polling  157 dev/usb/usbdi.h void usbd_set_polling(usbd_device_handle iface, int on);