'\" t
.\"     Title: class_find_device
.\"    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 "CLASS_FIND_DEVICE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
class_find_device \- device iterator for locating a particular device
.SH "SYNOPSIS"
.HP \w'struct\ device\ *\ class_find_device('u
.BI "struct device * class_find_device(struct\ class\ *\ " "class" ", struct\ device\ *\ " "start" ", const\ void\ *\ " "data" ", int\ (*" "match" ")\ (struct\ device\ *,\ const\ void\ *));"
.SH "ARGUMENTS"
.PP
\fIclass\fR
.RS 4
the class we\*(Aqre iterating
.RE
.PP
\fIstart\fR
.RS 4
Device to begin with
.RE
.PP
\fIdata\fR
.RS 4
data for the match function
.RE
.PP
\fImatch\fR
.RS 4
function to check device
.RE
.SH "DESCRIPTION"
.PP
This is similar to the
\fBclass_for_each_dev\fR
function above, but it returns a reference to a device that is \*(Aqfound\*(Aq for later use, as determined by the
\fImatch\fR
callback\&.
.PP
The callback should return 0 if the device doesn\*(Aqt match and non\-zero if it does\&. If the callback returns non\-zero, this function will return to the caller and not iterate over any more devices\&.
.PP
Note, you will need to drop the reference with
\fBput_device\fR
after use\&.
.PP
\fImatch\fR
is allowed to do anything including calling back into class code\&. There\*(Aqs no locking restriction\&.
.SH "COPYRIGHT"
.br