* The function is provided primarily for OSS layer and USB gadget drivers,
* and it allows only the limited set of ioctls (hw_params, sw_params,
* prepare, start, drain, drop, forward).
* The function is provided primarily for OSS layer and USB gadget drivers,
* and it allows only the limited set of ioctls (hw_params, sw_params,
* prepare, start, drain, drop, forward).