'\" t
.\"     Title: register_blkdev
.\"    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: Block Devices
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "REGISTER_BLKDEV" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Block Devices"
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.SH "NAME"
register_blkdev \- register a new block device
.SH "SYNOPSIS"
.HP \w'int\ register_blkdev('u
.BI "int register_blkdev(unsigned\ int\ " "major" ", const\ char\ *\ " "name" ");"
.SH "ARGUMENTS"
.PP
\fImajor\fR
.RS 4
the requested major device number [1\&.\&.255]\&. If
\fImajor\fR=0, try to allocate any unused major number\&.
.RE
.PP
\fIname\fR
.RS 4
the name of the new block device as a zero terminated string
.RE
.SH "DESCRIPTION"
.PP
The
\fIname\fR
must be unique within the system\&.
.PP
The return value depends on the
\fImajor\fR
input parameter\&. \- if a major device number was requested in range [1\&.\&.255] then the function returns zero on success, or a negative error code \- if any unused major number was requested with
\fImajor\fR=0 parameter then the return value is the allocated major number in range [1\&.\&.255] or a negative error code otherwise
.SH "COPYRIGHT"
.br