HelenOS sources
usb_str_direction 149 uspace/drv/bus/usb/ehci/ehci_batch.c ehci_batch, usb_str_direction(ehci_batch->base.dir),
usb_str_direction 222 uspace/drv/bus/usb/ehci/hc.c usb_str_direction(ep->direction));
usb_str_direction 245 uspace/drv/bus/usb/ehci/hc.c usb_str_direction(ep->direction));
usb_str_direction 330 uspace/drv/bus/usb/ohci/ohci_batch.c usb_str_direction(dir),
usb_str_direction 375 uspace/drv/bus/usb/ohci/ohci_batch.c usb_str_direction(dir),
usb_str_direction 256 uspace/drv/bus/usb/uhci/uhci_batch.c usb_str_direction(uhci_batch->base.ep->direction),
usb_str_direction 311 uspace/drv/bus/usb/xhci/transfers.c XHCI_DEV_FMT, ep_num, usb_str_direction(dir), XHCI_DEV_ARGS(*dev));
usb_str_direction 489 uspace/drv/bus/usb/xhci/transfers.c usb_str_direction(dir));
usb_str_direction 59 uspace/lib/usb/include/usb/usb.h const char *usb_str_direction(usb_direction_t);
usb_str_direction 109 uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h usb_str_direction((batch).dir), \
usb_str_direction 410 uspace/lib/usbhost/src/bus.c usb_str_direction(ep->direction),
usb_str_direction 492 uspace/lib/usbhost/src/bus.c usb_str_direction(ep->direction),
usb_str_direction 274 uspace/lib/usbhost/src/utility.c usb_log_warning("Device(%u): Resetting unregistered endpoint %u %s.", dev->address, ep_num, usb_str_direction(dir));
HelenOS homepage, sources at GitHub