---
title: kIOReturnPortExists
framework: driverkit
role: symbol
role_heading: Macro
path: driverkit/kioreturnportexists
---

# kIOReturnPortExists

## Declaration

```occ
#define kIOReturnPortExists
```

## See Also

### Errors

- [kIOReturnAborted](driverkit/kioreturnaborted.md)
- [kIOReturnBadArgument](driverkit/kioreturnbadargument.md)
- [kIOReturnBadMedia](driverkit/kioreturnbadmedia.md)
- [kIOReturnBadMessageID](driverkit/kioreturnbadmessageid.md)
- [kIOReturnBusy](driverkit/kioreturnbusy.md)
- [kIOReturnCannotLock](driverkit/kioreturncannotlock.md)
- [kIOReturnCannotWire](driverkit/kioreturncannotwire.md)
- [kIOReturnDeviceError](driverkit/kioreturndeviceerror.md)
- [kIOReturnDMAError](driverkit/kioreturndmaerror.md)
- [kIOReturnError](driverkit/kioreturnerror.md)
- [kIOReturnExclusiveAccess](driverkit/kioreturnexclusiveaccess.md)
- [kIOReturnInternalError](driverkit/kioreturninternalerror.md)
- [kIOReturnInvalid](driverkit/kioreturninvalid.md)
- [kIOReturnIOError](driverkit/kioreturnioerror.md)
- [kIOReturnIPCError](driverkit/kioreturnipcerror.md)