---
title: StopDevice
framework: audiodriverkit
role: symbol
role_heading: Instance Method
path: audiodriverkit/iouseraudiodriver/stopdevice
---

# StopDevice

Tells the driver to stop I/O on an audio device or audio clock device.

## Declaration

```occ
virtual kern_return_t StopDevice(IOUserAudioObjectID in_object_id, IOUserAudioStartStopFlags in_flags);
```

## Parameters

- `in_object_id`: The identifier of the device on which to stop I/O.
- `in_flags`: A flag that indicates how to perform the I/O stop operation.

## Return Value

Return Value kIOReturnSuccess on success, or another value if an error occurs. For a list of error codes, see Error Codes.

## Discussion

Discussion The default implementation always returns kIOReturnSuccess. Subclass and override this method to handle hardware-specific stopping, then call the superclass to update the I/O state. This call results in a call to StopIO on the device.

## See Also

### Starting and Stopping the Driver

- [StartDevice](audiodriverkit/iouseraudiodriver/startdevice.md)
- [IOUserAudioObjectID](audiodriverkit/audiodriverkit/iouseraudioobjectid.md)
- [IOUserAudioStartStopFlags](audiodriverkit/audiodriverkit/iouseraudiostartstopflags.md)