PDWORD
PDWORD lpBytesReturned /* byte count */
*(PDWORD)lpOutBuffer = hpt_get_controller_count();
PDWORD lpBytesReturned /* byte count */
PDWORD lpBytesReturned /* byte count */
int hpt_default_ioctl(_VBUS_ARG DWORD, PVOID, DWORD, PVOID, DWORD, PDWORD);