3267 static int try_enable_preferred_console(struct console *newcon,  in try_enable_preferred_console()  argument
3278 		if (!newcon->match ||  in try_enable_preferred_console()
3279 		    newcon->match(newcon, c->name, c->index, c->options) != 0) {  in try_enable_preferred_console()
3281 			BUILD_BUG_ON(sizeof(c->name) != sizeof(newcon->name));  in try_enable_preferred_console()
3282 			if (strcmp(c->name, newcon->name) != 0)  in try_enable_preferred_console()
3284 			if (newcon->index >= 0 &&  in try_enable_preferred_console()
3285 			    newcon->index != c->index)  in try_enable_preferred_console()
3287 			if (newcon->index < 0)  in try_enable_preferred_console()
3288 				newcon->index = c->index;  in try_enable_preferred_console()
3290 			if (_braille_register_console(newcon, c))  in try_enable_preferred_console()
3293 			if (newcon->setup &&  in try_enable_preferred_console()
3294 			    (err = newcon->setup(newcon, c->options)) != 0)  in try_enable_preferred_console()
3297 		newcon->flags |= CON_ENABLED;  in try_enable_preferred_console()
3299 			newcon->flags |= CON_CONSDEV;  in try_enable_preferred_console()
3308 	if (newcon->flags & CON_ENABLED && c->user_specified ==	user_specified)  in try_enable_preferred_console()
3315 static void try_enable_default_console(struct console *newcon)  in try_enable_default_console()  argument
3317 	if (newcon->index < 0)  in try_enable_default_console()
3318 		newcon->index = 0;  in try_enable_default_console()
3320 	if (newcon->setup && newcon->setup(newcon, NULL) != 0)  in try_enable_default_console()
3323 	newcon->flags |= CON_ENABLED;  in try_enable_default_console()
3325 	if (newcon->device)  in try_enable_default_console()
3326 		newcon->flags |= CON_CONSDEV;  in try_enable_default_console()
3334 static void console_init_seq(struct console *newcon, bool bootcon_registered)  in console_init_seq()  argument
3339 	if (newcon->flags & (CON_PRINTBUFFER | CON_BOOT)) {  in console_init_seq()
3342 		newcon->seq = syslog_seq;  in console_init_seq()
3346 		newcon->seq = prb_next_seq(prb);  in console_init_seq()
3367 			if (!console_flush_all(true, &newcon->seq, &handover)) {  in console_init_seq()
3380 				newcon->seq = prb_next_seq(prb);  in console_init_seq()
3384 					    con->seq < newcon->seq) {  in console_init_seq()
3385 						newcon->seq = con->seq;  in console_init_seq()
3419 void register_console(struct console *newcon)  in register_console()  argument
3429 		if (WARN(con == newcon, "console '%s%d' already registered\n",  in register_console()
3441 	if ((newcon->flags & CON_BOOT) && realcon_registered) {  in register_console()
3443 			newcon->name, newcon->index);  in register_console()
3462 			try_enable_default_console(newcon);  in register_console()
3467 	err = try_enable_preferred_console(newcon, true);  in register_console()
3471 		err = try_enable_preferred_console(newcon, false);  in register_console()
3474 	if (err || newcon->flags & CON_BRL)  in register_console()
3484 	    ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV)) {  in register_console()
3485 		newcon->flags &= ~CON_PRINTBUFFER;  in register_console()
3488 	newcon->dropped = 0;  in register_console()
3489 	console_init_seq(newcon, bootcon_registered);  in register_console()
3497 		newcon->flags |= CON_CONSDEV;  in register_console()
3498 		hlist_add_head_rcu(&newcon->node, &console_list);  in register_console()
3500 	} else if (newcon->flags & CON_CONSDEV) {  in register_console()
3503 		hlist_add_head_rcu(&newcon->node, &console_list);  in register_console()
3506 		hlist_add_behind_rcu(&newcon->node, console_list.first);  in register_console()
3524 	con_printk(KERN_INFO, newcon, "enabled\n");  in register_console()
3526 	    ((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV) &&  in register_console()