ccw_device_start_timeout
extern int ccw_device_start_timeout(struct ccw_device *, struct ccw1 *,
EXPORT_SYMBOL(ccw_device_start_timeout);
rc = ccw_device_start_timeout(cdev, __ccw_from_cmd(iob),
rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),