'\" t
.\"     Title: device_register
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Device drivers infrastructure
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DEVICE_REGISTER" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
device_register \- register a device with the system\&.
.SH "SYNOPSIS"
.HP \w'int\ device_register('u
.BI "int device_register(struct\ device\ *\ " "dev" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
pointer to the device structure
.RE
.SH "DESCRIPTION"
.PP
This happens in two clean steps \- initialize the device and add it to the system\&. The two steps can be called separately, but this is the easiest and most common\&. I\&.e\&. you should only call the two helpers separately if have a clearly defined need to use and refcount the device before it is added to the hierarchy\&.
.PP
For more information, see the kerneldoc for
\fBdevice_initialize\fR
and
\fBdevice_add\fR\&.
.SH "NOTE"
.PP
_Never_ directly free
\fIdev\fR
after calling this function, even if it returned an error! Always use
\fBput_device\fR
to give up the reference initialized in this function instead\&.
.SH "COPYRIGHT"
.br