582 	struct sysrq_state *sysrq =  in sysrq_reinject_alt_sysrq()  local
584 	struct input_handle *handle = &sysrq->handle;  in sysrq_reinject_alt_sysrq()
585 	unsigned int alt_code = sysrq->alt_use;  in sysrq_reinject_alt_sysrq()
587 	if (sysrq->need_reinject) {  in sysrq_reinject_alt_sysrq()
589 		sysrq->reinjecting = true;  in sysrq_reinject_alt_sysrq()
602 		sysrq->reinjecting = false;  in sysrq_reinject_alt_sysrq()
609 	struct sysrq_state *sysrq = handle->private;  in sysrq_filter()  local
610 	bool was_active = sysrq->active;  in sysrq_filter()
617 	if (sysrq->reinjecting)  in sysrq_filter()
633 				if (sysrq->active && code == sysrq->alt_use)  in sysrq_filter()
634 					sysrq->active = false;  in sysrq_filter()
636 				sysrq->alt = KEY_RESERVED;  in sysrq_filter()
639 				sysrq->alt = code;  in sysrq_filter()
640 				sysrq->need_reinject = false;  in sysrq_filter()
645 			if (value == 1 && sysrq->alt != KEY_RESERVED) {  in sysrq_filter()
646 				sysrq->active = true;  in sysrq_filter()
647 				sysrq->alt_use = sysrq->alt;  in sysrq_filter()
652 				sysrq->need_reinject = true;  in sysrq_filter()
663 			if (sysrq->active)  in sysrq_filter()
669 			if (sysrq->active && value && value != 2) {  in sysrq_filter()
670 				sysrq->need_reinject = false;  in sysrq_filter()
676 		suppress = sysrq->active;  in sysrq_filter()
678 		if (!sysrq->active) {  in sysrq_filter()
685 				set_bit(code, sysrq->key_down);  in sysrq_filter()
687 				clear_bit(code, sysrq->key_down);  in sysrq_filter()
690 				schedule_work(&sysrq->reinject_work);  in sysrq_filter()
693 			   test_and_clear_bit(code, sysrq->key_down)) {  in sysrq_filter()
703 		suppress = sysrq->active;  in sysrq_filter()
714 	struct sysrq_state *sysrq;  in sysrq_connect()  local
717 	sysrq = kzalloc(sizeof(struct sysrq_state), GFP_KERNEL);  in sysrq_connect()
718 	if (!sysrq)  in sysrq_connect()
721 	INIT_WORK(&sysrq->reinject_work, sysrq_reinject_alt_sysrq);  in sysrq_connect()
723 	sysrq->handle.dev = dev;  in sysrq_connect()
724 	sysrq->handle.handler = handler;  in sysrq_connect()
725 	sysrq->handle.name = "sysrq";  in sysrq_connect()
726 	sysrq->handle.private = sysrq;  in sysrq_connect()
728 	error = input_register_handle(&sysrq->handle);  in sysrq_connect()
735 	error = input_open_device(&sysrq->handle);  in sysrq_connect()
744 	input_unregister_handle(&sysrq->handle);  in sysrq_connect()
746 	kfree(sysrq);  in sysrq_connect()
752 	struct sysrq_state *sysrq = handle->private;  in sysrq_disconnect()  local
755 	cancel_work_sync(&sysrq->reinject_work);  in sysrq_disconnect()
757 	kfree(sysrq);  in sysrq_disconnect()