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IOCTL_INTERNAL_USB_UNREGISTER_COMPOSITE_DEVICE IOCTL (usbioctl.h)

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The IOCTL_INTERNAL_USB_UNREGISTER_COMPOSITE_DEVICE I/O request unregisters the driver of a USB multi-function device (composite driver) and releases all resources that are associated with registration. The request is successful only if the composite driver was previously registered with the underlying USB driver stack through the IOCTL_INTERNAL_USB_REGISTER_COMPOSITE_DEVICE request.

IOCTL_INTERNAL_USB_UNREGISTER_COMPOSITE_DEVICE is a kernel-mode I/O control request. This request targets the Universal Serial Bus (USB) hub physical device object (PDO). This request must be sent at an interrupt request level (IRQL) of PASSIVE_LEVEL.

Major code

IRP_MJ_INTERNAL_DEVICE_CONTROL

Input buffer

None.

Input buffer length

None.

Output buffer

None.

Output buffer length

None.

Status block

The USB driver stack sets Irp->IoStatus.Status to STATUS_SUCCESS or the appropriate error status.

Remarks

You must send the IOCTL_INTERNAL_USB_UNREGISTER_COMPOSITE_DEVICE request in the composite driver's remove-device (IRP_MN_REMOVE_DEVICE) routine.

Requirements

Requirement Value
Minimum supported client Windows 8
Header usbioctl.h (include Usbioctl.h)
IRQL PASSIVE_LEVEL

See also

How to Register a Composite Device

IOCTL_INTERNAL_USB_REGISTER_COMPOSITE_DEVICE