---
title: deviceRequest
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iousbhostdevice/3516788-devicerequest
---

# deviceRequest

## Declaration

```occ
virtual IOReturn deviceRequest(IOService *forClient, StandardUSB::DeviceRequest & request, void *rawBuffer, IOMemoryDescriptor *descriptorBuffer, uint32_t & bytesTransferred, IOUSBHostCompletion *completion, uint32_t completionTimeoutMs);
```