make_dev_covering
dev = make_dev_covering(&default_dev_ops, ops, 0xffff00ff,
ndev = make_dev_covering(dops,
ndev = make_dev_covering(dops, dp->d_rawdev->si_ops,
dp->d_cdev = make_dev_covering(
dp->d_cdev = make_dev_covering(
cdev_t make_dev_covering(struct dev_ops *ops, struct dev_ops *bops, int minor,