usb_add_config (9) Linux Manual Page
usb_add_config – add a configuration to a device.
Synopsis
int usb_add_config(struct usb_composite_dev *cdev, struct usb_configuration *config, int (*bind)(struct usb_configuration *));Arguments
cdev
-
- wraps the USB gadget
config
- the configuration, with bConfigurationValue assigned
bind
- the configuration’s bind function
Context
single threaded during gadget setup
Description
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.
Author
David Brownell <dbrownell [at] users.sourceforge.net>
- Author.