Symbol: UHCI_INVALID_PTR
usr/src/uts/common/io/usb/hcd/uhci/uhciutil.c
1450
uhcip->uhci_ctrl_xfers_q_head->prev_qh = UHCI_INVALID_PTR;
usr/src/uts/common/io/usb/hcd/uhci/uhciutil.c
1478
uhcip->uhci_bulk_xfers_q_head->prev_qh = UHCI_INVALID_PTR;