__int64 __fastcall IopRemoveDeviceRelationsFromList(unsigned int **a1){
unsigned int *v1;
unsigned int v3;
int v5;
__int64 v6;
v1 = *a1;
v5 = 0;
v3 = *v1;
while( (--v3 & 0x80000000) == 0 )
{
PipDeviceObjectListElementAt(*a1, v3, &v6, &v5, 0i64);
if( !v5 )
PipDeviceObjectListRemove((_DEVICE_OBJECT_LIST *)*a1, v3);
}
return 0i64;
}