'\" t
.\"     Title: usb_register_dev
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: April 2019
.\"    Manual: USB Core APIs
.\"    Source: Kernel Hackers Manual 4.9.168
.\"  Language: English
.\"
.TH "USB_REGISTER_DEV" "9" "April 2019" "Kernel Hackers Manual 4\&.9\&." "USB Core APIs"
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.SH "NAME"
usb_register_dev \- register a USB device, and ask for a minor number
.SH "SYNOPSIS"
.HP \w'int\ usb_register_dev('u
.BI "int usb_register_dev(struct\ usb_interface\ *\ " "intf" ", struct\ usb_class_driver\ *\ " "class_driver" ");"
.SH "ARGUMENTS"
.PP
\fIintf\fR
.RS 4
pointer to the usb_interface that is being registered
.RE
.PP
\fIclass_driver\fR
.RS 4
pointer to the usb_class_driver for this device
.RE
.SH "DESCRIPTION"
.PP
This should be called by all USB drivers that use the USB major number\&. If CONFIG_USB_DYNAMIC_MINORS is enabled, the minor number will be dynamically allocated out of the list of available ones\&. If it is not enabled, the minor number will be based on the next available free minor, starting at the class_driver\->minor_base\&.
.PP
This function also creates a usb class device in the sysfs tree\&.
.PP
\fBusb_deregister_dev\fR
must be called when the driver is done with the minor numbers given out by this function\&.
.SH "RETURN"
.PP
\-EINVAL if something bad happens with trying to register a device, and 0 on success\&.
.SH "COPYRIGHT"
.br