ccw_device_halt
extern int ccw_device_halt(struct ccw_device *, unsigned long);
EXPORT_SYMBOL(ccw_device_halt);
rc = ccw_device_halt(cdev, QDIO_DOING_CLEANUP);
rc = ccw_device_halt(ch->cdev, 0);
rc = ccw_device_halt(ch->cdev, 0);
int rc = ccw_device_halt(ch->cdev, 0);
rc = ccw_device_halt(ch->cdev, 0);
ccw_device_halt(ch->cdev, 0);
ccw_device_halt(ch2->cdev, 0);
rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);