__int64 __fastcall IovpCancelRoutine(__int64 a1, __int64 a2, __int64 (__fastcall *a3)(__int64, __int64)){
__int64(__fastcall *v6)(__int64, __int64);
if( (MmVerifierData & 0x6A0000) == 0 && !VfIsRuleClassEnabled(0x23ui64)
|| !a1
|| !*(_QWORD *)(*(_QWORD *)(*(_QWORD *)(a1 + 8) + 48i64) + 64i64)
|| (v6 = (__int64(__fastcall *)(__int64, __int64))pXdvDriverCancel) == 0i64 )
{
v6 = a3;
}
return v6(a1, a2);
}