'\" t
.\"     Title: ccw_device_clear
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: The ccw bus
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "CCW_DEVICE_CLEAR" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "The ccw bus"
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.SH "NAME"
ccw_device_clear \- terminate I/O request processing
.SH "SYNOPSIS"
.HP \w'int\ ccw_device_clear('u
.BI "int ccw_device_clear(struct\ ccw_device\ *\ " "cdev" ", unsigned\ long\ " "intparm" ");"
.SH "ARGUMENTS"
.PP
\fIcdev\fR
.RS 4
target ccw device
.RE
.PP
\fIintparm\fR
.RS 4
interruption parameter; value is only used if no I/O is outstanding, otherwise the intparm associated with the I/O request is returned
.RE
.SH "DESCRIPTION"
.PP
\fBccw_device_clear\fR
calls csch on
\fIcdev\fR\*(Aqs subchannel\&.
.SH "RETURN"
.PP
\fB0\fR
on success, \-\fBENODEV\fR
on device not operational, \-\fBEINVAL\fR
on invalid device state\&.
.SH "CONTEXT"
.PP
Interrupts disabled, ccw device lock held
.SH "AUTHOR"
.PP
\fBCornelia Huck\fR <\&cornelia.huck@de.ibm.com\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br