73 	int retval = -EEXIST;  in n_tracerouter_open()  local
80 			retval = -EFAULT;  in n_tracerouter_open()
86 			retval = 0;  in n_tracerouter_open()
90 	return retval;  in n_tracerouter_open()
206 	int retval;  in n_tracerouter_init()  local
214 	retval = tty_register_ldisc(N_TRACEROUTER, &tty_ptirouter_ldisc);  in n_tracerouter_init()
215 	if (retval < 0) {  in n_tracerouter_init()
216 		pr_err("%s: Registration failed: %d\n", __func__, retval);  in n_tracerouter_init()
219 	return retval;  in n_tracerouter_init()
229 	int retval = tty_unregister_ldisc(N_TRACEROUTER);  in n_tracerouter_exit()  local
231 	if (retval < 0)  in n_tracerouter_exit()
232 		pr_err("%s: Unregistration failed: %d\n", __func__,  retval);  in n_tracerouter_exit()