get_ccwdev_by_dev_id
gdev->cdev[i] = get_ccwdev_by_dev_id(&dev_id);
cdev = get_ccwdev_by_dev_id(&dev_id);
EXPORT_SYMBOL_GPL(get_ccwdev_by_dev_id);
struct ccw_device *get_ccwdev_by_dev_id(struct ccw_dev_id *dev_id);