usb_add_function — add a function to a configuration
int usb_add_function ( | struct usb_configuration * config, |
struct usb_function * function); |
After initialization, each configuration must have one or more
functions added to it. Adding a function involves calling its @bind
method to allocate resources such as interface and string identifiers
and endpoints.
This function returns the value of the function's bind, which is
zero for success else a negative errno value.