---
title: asyncStreamWrite
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofirewirecontroller/1457295-asyncstreamwrite
---

# asyncStreamWrite

## Declaration

```occ
virtual IOReturn asyncStreamWrite(UInt32 generation, int speed, int tag, int sync, int channel, IOMemoryDescriptor *buf, IOByteCount offset, int size, IOFWAsyncStreamCommand *cmd);
```