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 *)); |
cdevwraps the USB gadget
configthe configuration, with bConfigurationValue assigned
bindthe configuration's bind function
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 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.