368 #define IS_HNDL_PENDING(hndl)	(!(hndl)->r_evt)  argument
373 				    struct scmi_event_handler *hndl);
375 				      struct scmi_event_handler *hndl);
389 	struct scmi_event_handler *hndl;  in scmi_lookup_and_call_event_chain()  local
397 	hndl = scmi_get_active_handler(ni, evt_key);  in scmi_lookup_and_call_event_chain()
398 	if (!hndl)  in scmi_lookup_and_call_event_chain()
401 	ret = blocking_notifier_call_chain(&hndl->chain,  in scmi_lookup_and_call_event_chain()
407 	scmi_put_active_handler(ni, hndl);  in scmi_lookup_and_call_event_chain()
883 	struct scmi_event_handler *hndl;  in scmi_allocate_event_handler()  local
885 	hndl = kzalloc(sizeof(*hndl), GFP_KERNEL);  in scmi_allocate_event_handler()
886 	if (!hndl)  in scmi_allocate_event_handler()
888 	hndl->key = evt_key;  in scmi_allocate_event_handler()
889 	BLOCKING_INIT_NOTIFIER_HEAD(&hndl->chain);  in scmi_allocate_event_handler()
890 	refcount_set(&hndl->users, 1);  in scmi_allocate_event_handler()
892 	hash_add(ni->pending_events_handlers, &hndl->hash, hndl->key);  in scmi_allocate_event_handler()
894 	return hndl;  in scmi_allocate_event_handler()
904 static void scmi_free_event_handler(struct scmi_event_handler *hndl)  in scmi_free_event_handler()  argument
906 	hash_del(&hndl->hash);  in scmi_free_event_handler()
907 	kfree(hndl);  in scmi_free_event_handler()
923 					  struct scmi_event_handler *hndl)  in scmi_bind_event_handler()  argument
927 	r_evt = SCMI_GET_REVT(ni, KEY_XTRACT_PROTO_ID(hndl->key),  in scmi_bind_event_handler()
928 			      KEY_XTRACT_EVT_ID(hndl->key));  in scmi_bind_event_handler()
936 	hash_del(&hndl->hash);  in scmi_bind_event_handler()
944 	scmi_acquire_protocol(ni->handle, KEY_XTRACT_PROTO_ID(hndl->key));  in scmi_bind_event_handler()
945 	hndl->r_evt = r_evt;  in scmi_bind_event_handler()
949 		 &hndl->hash, hndl->key);  in scmi_bind_event_handler()
970 					     struct scmi_event_handler *hndl)  in scmi_valid_pending_handler()  argument
974 	if (!IS_HNDL_PENDING(hndl))  in scmi_valid_pending_handler()
977 	pd = SCMI_GET_PROTO(ni, KEY_XTRACT_PROTO_ID(hndl->key));  in scmi_valid_pending_handler()
1002 				       struct scmi_event_handler *hndl)  in scmi_register_event_handler()  argument
1006 	ret = scmi_bind_event_handler(ni, hndl);  in scmi_register_event_handler()
1009 			hndl->key);  in scmi_register_event_handler()
1011 		ret = scmi_valid_pending_handler(ni, hndl);  in scmi_register_event_handler()
1015 				hndl->key);  in scmi_register_event_handler()
1056 	struct scmi_event_handler *hndl = NULL;  in __scmi_event_handler_get_ops()  local
1065 		hndl = KEY_FIND(r_evt->proto->registered_events_handlers,  in __scmi_event_handler_get_ops()
1066 				hndl, evt_key);  in __scmi_event_handler_get_ops()
1067 		if (hndl)  in __scmi_event_handler_get_ops()
1068 			refcount_inc(&hndl->users);  in __scmi_event_handler_get_ops()
1073 	if (!hndl) {  in __scmi_event_handler_get_ops()
1074 		hndl = KEY_FIND(ni->pending_events_handlers, hndl, evt_key);  in __scmi_event_handler_get_ops()
1075 		if (hndl)  in __scmi_event_handler_get_ops()
1076 			refcount_inc(&hndl->users);  in __scmi_event_handler_get_ops()
1080 	if (!hndl && create) {  in __scmi_event_handler_get_ops()
1081 		hndl = scmi_allocate_event_handler(ni, evt_key);  in __scmi_event_handler_get_ops()
1082 		if (hndl && scmi_register_event_handler(ni, hndl)) {  in __scmi_event_handler_get_ops()
1085 				hndl->key);  in __scmi_event_handler_get_ops()
1087 			scmi_put_handler_unlocked(ni, hndl);  in __scmi_event_handler_get_ops()
1088 			hndl = NULL;  in __scmi_event_handler_get_ops()
1093 	return hndl;  in __scmi_event_handler_get_ops()
1123 	struct scmi_event_handler *hndl = NULL;  in scmi_get_active_handler()  local
1129 		hndl = KEY_FIND(r_evt->proto->registered_events_handlers,  in scmi_get_active_handler()
1130 				hndl, evt_key);  in scmi_get_active_handler()
1131 		if (hndl)  in scmi_get_active_handler()
1132 			refcount_inc(&hndl->users);  in scmi_get_active_handler()
1136 	return hndl;  in scmi_get_active_handler()
1198 static int scmi_enable_events(struct scmi_event_handler *hndl)  in scmi_enable_events()  argument
1202 	if (!hndl->enabled) {  in scmi_enable_events()
1203 		ret = __scmi_enable_evt(hndl->r_evt,  in scmi_enable_events()
1204 					KEY_XTRACT_SRC_ID(hndl->key), true);  in scmi_enable_events()
1206 			hndl->enabled = true;  in scmi_enable_events()
1212 static int scmi_disable_events(struct scmi_event_handler *hndl)  in scmi_disable_events()  argument
1216 	if (hndl->enabled) {  in scmi_disable_events()
1217 		ret = __scmi_enable_evt(hndl->r_evt,  in scmi_disable_events()
1218 					KEY_XTRACT_SRC_ID(hndl->key), false);  in scmi_disable_events()
1220 			hndl->enabled = false;  in scmi_disable_events()
1241 				      struct scmi_event_handler *hndl)  in scmi_put_handler_unlocked()  argument
1245 	if (refcount_dec_and_test(&hndl->users)) {  in scmi_put_handler_unlocked()
1246 		if (!IS_HNDL_PENDING(hndl))  in scmi_put_handler_unlocked()
1247 			scmi_disable_events(hndl);  in scmi_put_handler_unlocked()
1248 		scmi_free_event_handler(hndl);  in scmi_put_handler_unlocked()
1256 			     struct scmi_event_handler *hndl)  in scmi_put_handler()  argument
1260 	struct scmi_registered_event *r_evt = hndl->r_evt;  in scmi_put_handler()
1268 	freed = scmi_put_handler_unlocked(ni, hndl);  in scmi_put_handler()
1285 				    struct scmi_event_handler *hndl)  in scmi_put_active_handler()  argument
1288 	struct scmi_registered_event *r_evt = hndl->r_evt;  in scmi_put_active_handler()
1292 	freed = scmi_put_handler_unlocked(ni, hndl);  in scmi_put_active_handler()
1304 static int scmi_event_handler_enable_events(struct scmi_event_handler *hndl)  in scmi_event_handler_enable_events()  argument
1306 	if (scmi_enable_events(hndl)) {  in scmi_event_handler_enable_events()
1307 		pr_err("Failed to ENABLE events for key:%X !\n", hndl->key);  in scmi_event_handler_enable_events()
1353 	struct scmi_event_handler *hndl;  in scmi_register_notifier()  local
1362 	hndl = scmi_get_or_create_handler(ni, evt_key);  in scmi_register_notifier()
1363 	if (!hndl)  in scmi_register_notifier()
1366 	blocking_notifier_chain_register(&hndl->chain, nb);  in scmi_register_notifier()
1369 	if (!IS_HNDL_PENDING(hndl)) {  in scmi_register_notifier()
1370 		ret = scmi_event_handler_enable_events(hndl);  in scmi_register_notifier()
1372 			scmi_put_handler(ni, hndl);  in scmi_register_notifier()
1399 	struct scmi_event_handler *hndl;  in scmi_unregister_notifier()  local
1408 	hndl = scmi_get_handler(ni, evt_key);  in scmi_unregister_notifier()
1409 	if (!hndl)  in scmi_unregister_notifier()
1416 	blocking_notifier_chain_unregister(&hndl->chain, nb);  in scmi_unregister_notifier()
1417 	scmi_put_handler(ni, hndl);  in scmi_unregister_notifier()
1430 	scmi_put_handler(ni, hndl);  in scmi_unregister_notifier()
1569 	struct scmi_event_handler *hndl;  in scmi_protocols_late_init()  local
1579 	hash_for_each_safe(ni->pending_events_handlers, bkt, tmp, hndl, hash) {  in scmi_protocols_late_init()
1582 		ret = scmi_bind_event_handler(ni, hndl);  in scmi_protocols_late_init()
1586 				hndl->key);  in scmi_protocols_late_init()
1587 			ret = scmi_event_handler_enable_events(hndl);  in scmi_protocols_late_init()
1591 					hndl->key);  in scmi_protocols_late_init()
1592 				scmi_put_active_handler(ni, hndl);  in scmi_protocols_late_init()
1595 			ret = scmi_valid_pending_handler(ni, hndl);  in scmi_protocols_late_init()
1599 					hndl->key);  in scmi_protocols_late_init()
1601 				scmi_put_handler_unlocked(ni, hndl);  in scmi_protocols_late_init()