---
title: AsyncDeviceRequest
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iousbhostdevice/3294607-asyncdevicerequest
---

# AsyncDeviceRequest

## Declaration

```occ
kern_return_t AsyncDeviceRequest(IOService *forClient, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength, IOMemoryDescriptor *dataBuffer, OSAction *completion, uint32_t completionTimeoutMs, OSDispatchMethod supermethod);
```