'\" t
.\"     Title: device_create
.\"    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_CREATE" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Device drivers infrastructure"
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.SH "NAME"
device_create \- creates a device and registers it with sysfs
.SH "SYNOPSIS"
.HP \w'struct\ device\ *\ device_create('u
.BI "struct device * device_create(struct\ class\ *\ " "class" ", struct\ device\ *\ " "parent" ", dev_t\ " "devt" ", void\ *\ " "drvdata" ", const\ char\ *\ " "fmt" ", " "\&.\&.\&." ");"
.SH "ARGUMENTS"
.PP
\fIclass\fR
.RS 4
pointer to the struct class that this device should be registered to
.RE
.PP
\fIparent\fR
.RS 4
pointer to the parent struct device of this new device, if any
.RE
.PP
\fIdevt\fR
.RS 4
the dev_t for the char device to be added
.RE
.PP
\fIdrvdata\fR
.RS 4
the data to be added to the device for callbacks
.RE
.PP
\fIfmt\fR
.RS 4
string for the device\*(Aqs name
.RE
.PP
\fI\&.\&.\&.\fR
.RS 4
variable arguments
.RE
.SH "DESCRIPTION"
.PP
This function can be used by char device classes\&. A struct device will be created in sysfs, registered to the specified class\&.
.PP
A
\(lqdev\(rq
file will be created, showing the dev_t for the device, if the dev_t is not 0,0\&. If a pointer to a parent struct device is passed in, the newly created struct device will be a child of that device in sysfs\&. The pointer to the struct device will be returned from the call\&. Any further sysfs files that might be required can be created using this pointer\&.
.PP
Returns
struct device
pointer on success, or
\fBERR_PTR\fR
on error\&.
.SH "NOTE"
.PP
the struct class passed to this function must have previously been created with a call to
\fBclass_create\fR\&.
.SH "COPYRIGHT"
.br