Fixed possible null pointer dereference in ethercat tool.
/******************************************************************************
*
* $Id$
*
* Copyright (C) 2006-2012 Florian Pose, Ingenieurgemeinschaft IgH
*
* This file is part of the IgH EtherCAT Master.
*
* The IgH EtherCAT Master is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* The IgH EtherCAT Master 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.
*
* You should have received a copy of the GNU General Public License along
* with the IgH EtherCAT Master; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* ---
*
* The license mentioned above concerns the source code only. Using the
* EtherCAT technology and brand is only permitted in compliance with the
* industrial property and similar rights of Beckhoff Automation GmbH.
*
*****************************************************************************/
/**
\file
EtherCAT datagram pair methods.
*/
/*****************************************************************************/
#include "datagram_pair.h"
/*****************************************************************************/
/** Datagram pair constructor.
*/
void ec_datagram_pair_init(
ec_datagram_pair_t *pair /**< Datagram pair. */
)
{
unsigned int i;
INIT_LIST_HEAD(&pair->list);
for (i = 0; i < EC_NUM_DEVICES; i++) {
ec_datagram_init(&pair->datagrams[i]);
}
}
/*****************************************************************************/
/** Datagram pair destructor.
*/
void ec_datagram_pair_clear(
ec_datagram_pair_t *pair /**< Datagram pair. */
)
{
unsigned int i;
for (i = 0; i < EC_NUM_DEVICES; i++) {
ec_datagram_clear(&pair->datagrams[i]);
}
}
/*****************************************************************************/