'\" t
.\"     Title: class_for_each_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_FOR_EACH_DEVIC" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
class_for_each_device \- device iterator
.SH "SYNOPSIS"
.HP \w'int\ class_for_each_device('u
.BI "int class_for_each_device(struct\ class\ *\ " "class" ", struct\ device\ *\ " "start" ", void\ *\ " "data" ", int\ (*" "fn" ")\ (struct\ device\ *,\ void\ *));"
.SH "ARGUMENTS"
.PP
\fIclass\fR
.RS 4
the class we\*(Aqre iterating
.RE
.PP
\fIstart\fR
.RS 4
the device to start with in the list, if any\&.
.RE
.PP
\fIdata\fR
.RS 4
data for the callback
.RE
.PP
\fIfn\fR
.RS 4
function to be called for each device
.RE
.SH "DESCRIPTION"
.PP
Iterate over
\fIclass\fR\*(Aqs list of devices, and call
\fIfn\fR
for each, passing it
\fIdata\fR\&. If
\fIstart\fR
is set, the list iteration will start there, otherwise if it is NULL, the iteration starts at the beginning of the list\&.
.PP
We check the return of
\fIfn\fR
each time\&. If it returns anything other than 0, we break out and return that value\&.
.PP
\fIfn\fR
is allowed to do anything including calling back into class code\&. There\*(Aqs no locking restriction\&.
.SH "COPYRIGHT"
.br