dummycon_unregister_output_notifier 3592 drivers/video/fbdev/core/fbcon.c 	dummycon_unregister_output_notifier(&fbcon_output_nb);
dummycon_unregister_output_notifier 3637 drivers/video/fbdev/core/fbcon.c 		dummycon_unregister_output_notifier(&fbcon_output_nb);
dummycon_unregister_output_notifier  235 include/linux/console.h void dummycon_unregister_output_notifier(struct notifier_block *nb);