'\" t
.\"     Title: enable_cmf
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: September 2017
.\"    Manual: The ccw bus
.\"    Source: Kernel Hackers Manual 4.12.13
.\"  Language: English
.\"
.TH "ENABLE_CMF" "9" "September 2017" "Kernel Hackers Manual 4\&.12\&" "The ccw bus"
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.SH "NAME"
enable_cmf \- switch on the channel measurement for a specific device
.SH "SYNOPSIS"
.HP \w'int\ enable_cmf('u
.BI "int enable_cmf(struct\ ccw_device\ *\ " "cdev" ");"
.SH "ARGUMENTS"
.PP
\fIstruct ccw_device * cdev\fR
.RS 4
The ccw device to be enabled
.RE
.SH "DESCRIPTION"
.PP
Returns
\fB0\fR
for success or a negative error value\&.
.SH "NOTE"
.PP
If this is called on a device for which channel measurement is already enabled a reset of the measurement data is triggered\&.
.SH "CONTEXT"
.PP
non\-atomic
.SH "AUTHOR"
.PP
\fBCornelia Huck\fR <\&cornelia.huck@de.ibm.com\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br