HelenOS sources

TRB_CTRL_SET_DIR  220 uspace/drv/bus/usb/xhci/transfers.c 		TRB_CTRL_SET_DIR(*trb, stage_dir);
TRB_CTRL_SET_DIR  231 uspace/drv/bus/usb/xhci/transfers.c 	TRB_CTRL_SET_DIR(*trb_status, get_status_direction_flag(trb_setup,