Man page 9 : usb_add_config

usb_add_config - add a configuration to a device.

int usb_add_config(struct usb_composite_dev *  cdev , struct usb_configuration *  config , int (* bind ) (struct usb_configuration *));

cdev
    wraps the USB gadget

config
    the configuration, with bConfigurationValue assigned

bind
    the configurationAqs bind function

single threaded during gadget setup

One of the main tasks of a composite bind() routine is to add each of the configurations it supports, using this routine.

This function returns the value of the configurationAqs bind(), which is zero for success else a negative errno value. Binding configurations assigns global resources including string IDs, and per-configuration resources such as interface IDs and endpoints.

David Brownell <>
    Author.