Motorola USB08 - Manual (Page 175)

Universal USB Device Driver (USBIO)
Programming Interface
USB08 Evaluation Board Designer Reference Manual
MOTOROLA Universal USB Device Driver (USBIO) 175
IOCTL_USBIO_UNBIND_PIPE
The IOCTL_USBIO_UNBIND_PIPE operation deletes the binding
between a file handle and a pipe object.
lpInBuffer Not used with this operation. Set to NULL.
nInBufferSize Not used with this operation. Set to zero.
lpOutBuffer Not used with this operation. Set to NULL.
nOutBufferSize Not used with this operation. Set to zero.
Comments After this operation is successfully completed the handle is unbound and
may be used to bind another pipe. It is not necessary to unbind a pipe
handle before it is closed. Closing a handle unbinds it implicitly.