void __fastcall IopRemoveCurrentRelationFromList(_DEVICE_OBJECT_LIST **a1, _DEVICE_OBJECT *a2, _DWORD *a3){
unsigned int v5;
_DEVICE_OBJECT_LIST **v6;
_DEVICE_OBJECT *v7;
v7 = 0i64;
if( *a3 <= 1u )
{
v5 = a3[1] - 1;
PipDeviceObjectListElementAt(*a1, v5, &v7, 0i64, 0i64);
if( v7 == a2 )
{
PipDeviceObjectListRemove(*v6, v5);
if( *a3 <= 1u )
a3[1] = v5;
}
}
}