Man page 9 : usb_add_function

usb_add_function - add a function to a configuration

int usb_add_function(struct usb_configuration *  config , struct usb_function *  function );

config
    the configuration

function
    the function being added

single threaded during gadget setup

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 functionAqs bind, which is zero for success else a negative errno value.

David Brownell <>
    Author.