'\" t
.\"     Title: usb_add_function
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: July 2017
.\"    Manual: Kernel Mode Gadget API
.\"    Source: Kernel Hackers Manual 4.11.6
.\"  Language: English
.\"
.TH "USB_ADD_FUNCTION" "9" "July 2017" "Kernel Hackers Manual 4\&.11\&" "Kernel Mode Gadget API"
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.SH "NAME"
usb_add_function \- add a function to a configuration
.SH "SYNOPSIS"
.HP \w'int\ usb_add_function('u
.BI "int usb_add_function(struct\ usb_configuration\ *\ " "config" ", struct\ usb_function\ *\ " "function" ");"
.SH "ARGUMENTS"
.PP
\fIstruct usb_configuration * config\fR
.RS 4
the configuration
.RE
.PP
\fIstruct usb_function * function\fR
.RS 4
the function being added
.RE
.SH "CONTEXT"
.PP
single threaded during gadget setup
.SH "DESCRIPTION"
.PP
After initialization, each configuration must have one or more functions added to it\&. Adding a function involves calling its
\fIbind\fR() method to allocate resources such as interface and string identifiers and endpoints\&.
.PP
This function returns the value of the function\*(Aqs
\fBbind\fR, which is zero for success else a negative errno value\&.
.SH "AUTHOR"
.PP
\fBDavid Brownell\fR <\&dbrownell@users.sourceforge.net\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br