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.TH "PM_SEND" "9" "09 April 2004" "" ""

.SH NAME
pm_send \- send request to a single device
.SH SYNOPSIS
.sp
\fB
.sp
int pm_send  (struct pm_dev * \fIdev\fB, pm_request_t \fIrqst\fB, void * \fIdata\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIdev\fB\fR
device to send to
.TP
\fB\fIrqst\fB\fR
power management request
.TP
\fB\fIdata\fB\fR
data for the callback
.SH "DESCRIPTION"
.PP
Issue a power management request to a given device. The 
PM_SUSPEND and PM_RESUME events are handled specially. The
data field must hold the intended next state. No call is made
if the state matches.
.SH "BUGS"
.PP
what stops two power management requests occurring in parallel
and conflicting.
.SH "WARNING"
.PP
Calling pm_send directly is not generally recommended, in
particular there is no locking against the pm_dev going away. The
caller must maintain all needed locking or have 'inside knowledge'
on the safety. Also remember that this function is not locked against
pm_unregister. This means that you must handle SMP races on callback
execution and unload yourself.
.SH "ABOUT THIS DOCUMENT"
.PP
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
.PP
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
.PP
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
.PP
For more details see the file COPYING in the source
distribution of Linux.
.PP
If you have comments on the formatting of this manpage, then please contact
Michael Still (mikal@stillhq.com).
.PP
This documentation was generated with kernel version 2.6.0.