HelenOS sources

xhci_legsup_t      94 uspace/drv/bus/usb/xhci/hc.c 			hc->legsup = (xhci_legsup_t *) ec;
xhci_legsup_t      68 uspace/drv/bus/usb/xhci/hc.h 	xhci_legsup_t *legsup;		/**< Legacy support capability */
HelenOS homepage, sources at GitHub