HelenOS sources
usb_str_speed 188 uspace/drv/bus/usb/usbhub/usbhub.c usb_str_speed(hub_dev->speed),
usb_str_speed 89 uspace/drv/bus/usb/xhci/device.c usb_str_speed(dev->base.speed));
usb_str_speed 160 uspace/drv/bus/usb/xhci/hc.c usb_str_speed(speeds[psiv].usb_speed), major);
usb_str_speed 884 uspace/drv/bus/usb/xhci/hc.c "to HC port speed.", usb_str_speed(dev->base.speed));
usb_str_speed 187 uspace/drv/bus/usb/xhci/rh.c usb_str_speed(dev->speed), dev->port);
usb_str_speed 71 uspace/lib/usb/include/usb/usb.h const char *usb_str_speed(usb_speed_t);
usb_str_speed 107 uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h usb_str_speed((batch).ep->device->speed), \
usb_str_speed 94 uspace/lib/usbhost/src/bus.c dev->address, usb_str_speed(dev->speed)[0]);
usb_str_speed 166 uspace/lib/usbhost/src/ddf_helpers.c hub->address, usb_str_speed(speed), port);
usb_str_speed 189 uspace/lib/usbhost/src/usb2_bus.c usb_log_debug("Found new %s speed USB device.", usb_str_speed(dev->speed));
HelenOS homepage, sources at GitHub