PnpBusTypeGuidGetIndex

UINT16 __stdcall PnpBusTypeGuidGetIndex(GUID *BusTypeGuid){
  unsigned int v2; 
  GUID *v3; 
  GUID v5; 
  __int64 v6; 
  UINT8 *PoolWithTag; 
  UINT8 *v8; 
  PVOID v9; 
  ExAcquireFastMutex(&PnpBusTypeGuidLock);
  v2 = 0;
  if( !PnpBusTypeGuidCount )
    goto LABEL_7;
  do
  {
    v3 = (GUID *)((char *)PnpBusTypeGuidArray + 16 * v2);
    if( BusTypeGuid == v3 )
      break;
    if( RtlCompareMemory(BusTypeGuid, v3, 0x10ui64) == 16 )
      break;
    ++v2;
  }
  while( v2 < PnpBusTypeGuidCount );
  if( v2 == PnpBusTypeGuidCount )
  {
LABEL_7:
    if( v2 == PnpBusTypeGuidCountMax )
    {
      PoolWithTag = (UINT8 *)ExAllocatePoolWithTag(PagedPool, 16i64 * (v2 + 1), 0x75737050ui64);
      v8 = PoolWithTag;
      if( PoolWithTag )
      {
        v9 = PnpBusTypeGuidArray;
        memmove(PoolWithTag, (UINT8 *)PnpBusTypeGuidArray, 16i64 * (unsigned int)PnpBusTypeGuidCount);
        ++PnpBusTypeGuidCountMax;
        if( v9 )
          ExFreePoolWithTag(v9, 0);
        PnpBusTypeGuidArray = v8;
      }
      else
      {
        v2 = -1;
      }
    }
    if( v2 != -1 )
    {
      v5 = *BusTypeGuid;
      v6 = 2i64 * (unsigned int)PnpBusTypeGuidCount++;
      *(GUID *)((char *)PnpBusTypeGuidArray + 8 * v6) = v5;
    }
  }
  KeReleaseGuardedMutex(&PnpBusTypeGuidLock);
  return v2;
}

Referenced by: