'\" t
.\"     Title: devm_request_resource
.\"    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: Hardware Interfaces
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DEVM_REQUEST_RESOURC" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Hardware Interfaces"
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.SH "NAME"
devm_request_resource \- request and reserve an I/O or memory resource
.SH "SYNOPSIS"
.HP \w'int\ devm_request_resource('u
.BI "int devm_request_resource(struct\ device\ *\ " "dev" ", struct\ resource\ *\ " "root" ", struct\ resource\ *\ " "new" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
device for which to request the resource
.RE
.PP
\fIroot\fR
.RS 4
root of the resource tree from which to request the resource
.RE
.PP
\fInew\fR
.RS 4
descriptor of the resource to request
.RE
.SH "DESCRIPTION"
.PP
This is a device\-managed version of
\fBrequest_resource\fR\&. There is usually no need to release resources requested by this function explicitly since that will be taken care of when the device is unbound from its driver\&. If for some reason the resource needs to be released explicitly, because of ordering issues for example, drivers must call
\fBdevm_release_resource\fR
rather than the regular
\fBrelease_resource\fR\&.
.PP
When a conflict is detected between any existing resources and the newly requested resource, an error message will be printed\&.
.PP
Returns 0 on success or a negative error code on failure\&.
.SH "COPYRIGHT"
.br