SBPROF_TB_MAJOR
if (register_chrdev(SBPROF_TB_MAJOR, DEVNAME, &sbprof_tb_fops)) {
SBPROF_TB_MAJOR);
dev = device_create(&tb_class, NULL, MKDEV(SBPROF_TB_MAJOR, 0), NULL, "tb");
unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME);
device_destroy(&tb_class, MKDEV(SBPROF_TB_MAJOR, 0));
unregister_chrdev(SBPROF_TB_MAJOR, DEVNAME);
MODULE_ALIAS_CHARDEV_MAJOR(SBPROF_TB_MAJOR);