suse man page for usb_add_config

USB_ADD_CONFIG(9)					      Kernel Mode Gadget API						 USB_ADD_CONFIG(9)

NAME
       usb_add_config - add a configuration to a device.

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

ARGUMENTS
       cdev
	   wraps the USB gadget

       config
	   the configuration, with bConfigurationValue assigned

CONTEXT
       single threaded during gadget setup

DESCRIPTION
       One of the main tasks of a composite driver's bind routine is to add each of the configurations it supports, using this routine.

       This function returns the value of the configuration's 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.

AUTHOR
       David Brownell <dbrownell@users.sourceforge.net>
	   Author.

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							 USB_ADD_CONFIG(9)