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 function's bind, which is zero for success else a negative errno value.
David Brownell <[email protected]>
Author.