19 	struct j1939_ecu *ecu = container_of(kref, struct j1939_ecu, kref);  in __j1939_ecu_release()  local
20 	struct j1939_priv *priv = ecu->priv;  in __j1939_ecu_release()
22 	list_del(&ecu->list);  in __j1939_ecu_release()
23 	kfree(ecu);  in __j1939_ecu_release()
27 void j1939_ecu_put(struct j1939_ecu *ecu)  in j1939_ecu_put()  argument
29 	kref_put(&ecu->kref, __j1939_ecu_release);  in j1939_ecu_put()
32 static void j1939_ecu_get(struct j1939_ecu *ecu)  in j1939_ecu_get()  argument
34 	kref_get(&ecu->kref);  in j1939_ecu_get()
37 static bool j1939_ecu_is_mapped_locked(struct j1939_ecu *ecu)  in j1939_ecu_is_mapped_locked()  argument
39 	struct j1939_priv *priv = ecu->priv;  in j1939_ecu_is_mapped_locked()
43 	return j1939_ecu_find_by_addr_locked(priv, ecu->addr) == ecu;  in j1939_ecu_is_mapped_locked()
48 static void j1939_ecu_map_locked(struct j1939_ecu *ecu)  in j1939_ecu_map_locked()  argument
50 	struct j1939_priv *priv = ecu->priv;  in j1939_ecu_map_locked()
55 	if (!j1939_address_is_unicast(ecu->addr))  in j1939_ecu_map_locked()
58 	ent = &priv->ents[ecu->addr];  in j1939_ecu_map_locked()
60 	if (ent->ecu) {  in j1939_ecu_map_locked()
62 			    ecu->addr, ecu->name);  in j1939_ecu_map_locked()
66 	j1939_ecu_get(ecu);  in j1939_ecu_map_locked()
67 	ent->ecu = ecu;  in j1939_ecu_map_locked()
68 	ent->nusers += ecu->nusers;  in j1939_ecu_map_locked()
72 void j1939_ecu_unmap_locked(struct j1939_ecu *ecu)  in j1939_ecu_unmap_locked()  argument
74 	struct j1939_priv *priv = ecu->priv;  in j1939_ecu_unmap_locked()
79 	if (!j1939_address_is_unicast(ecu->addr))  in j1939_ecu_unmap_locked()
82 	if (!j1939_ecu_is_mapped_locked(ecu))  in j1939_ecu_unmap_locked()
85 	ent = &priv->ents[ecu->addr];  in j1939_ecu_unmap_locked()
86 	ent->ecu = NULL;  in j1939_ecu_unmap_locked()
87 	ent->nusers -= ecu->nusers;  in j1939_ecu_unmap_locked()
88 	j1939_ecu_put(ecu);  in j1939_ecu_unmap_locked()
91 void j1939_ecu_unmap(struct j1939_ecu *ecu)  in j1939_ecu_unmap()  argument
93 	write_lock_bh(&ecu->priv->lock);  in j1939_ecu_unmap()
94 	j1939_ecu_unmap_locked(ecu);  in j1939_ecu_unmap()
95 	write_unlock_bh(&ecu->priv->lock);  in j1939_ecu_unmap()
104 		if (priv->ents[i].ecu)  in j1939_ecu_unmap_all()
105 			j1939_ecu_unmap_locked(priv->ents[i].ecu);  in j1939_ecu_unmap_all()
109 void j1939_ecu_timer_start(struct j1939_ecu *ecu)  in j1939_ecu_timer_start()  argument
114 	j1939_ecu_get(ecu);  in j1939_ecu_timer_start()
117 	hrtimer_start(&ecu->ac_timer, ms_to_ktime(250),  in j1939_ecu_timer_start()
121 void j1939_ecu_timer_cancel(struct j1939_ecu *ecu)  in j1939_ecu_timer_cancel()  argument
123 	if (hrtimer_cancel(&ecu->ac_timer))  in j1939_ecu_timer_cancel()
124 		j1939_ecu_put(ecu);  in j1939_ecu_timer_cancel()
129 	struct j1939_ecu *ecu =  in j1939_ecu_timer_handler()  local
131 	struct j1939_priv *priv = ecu->priv;  in j1939_ecu_timer_handler()
137 	j1939_ecu_map_locked(ecu);  in j1939_ecu_timer_handler()
142 	j1939_ecu_put(ecu);  in j1939_ecu_timer_handler()
150 	struct j1939_ecu *ecu;  in j1939_ecu_create_locked()  local
154 	ecu = kzalloc(sizeof(*ecu), gfp_any());  in j1939_ecu_create_locked()
155 	if (!ecu)  in j1939_ecu_create_locked()
157 	kref_init(&ecu->kref);  in j1939_ecu_create_locked()
158 	ecu->addr = J1939_IDLE_ADDR;  in j1939_ecu_create_locked()
159 	ecu->name = name;  in j1939_ecu_create_locked()
161 	hrtimer_init(&ecu->ac_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_SOFT);  in j1939_ecu_create_locked()
162 	ecu->ac_timer.function = j1939_ecu_timer_handler;  in j1939_ecu_create_locked()
163 	INIT_LIST_HEAD(&ecu->list);  in j1939_ecu_create_locked()
166 	ecu->priv = priv;  in j1939_ecu_create_locked()
167 	list_add_tail(&ecu->list, &priv->ecus);  in j1939_ecu_create_locked()
169 	return ecu;  in j1939_ecu_create_locked()
177 	return priv->ents[addr].ecu;  in j1939_ecu_find_by_addr_locked()
182 	struct j1939_ecu *ecu;  in j1939_ecu_get_by_addr_locked()  local
189 	ecu = j1939_ecu_find_by_addr_locked(priv, addr);  in j1939_ecu_get_by_addr_locked()
190 	if (ecu)  in j1939_ecu_get_by_addr_locked()
191 		j1939_ecu_get(ecu);  in j1939_ecu_get_by_addr_locked()
193 	return ecu;  in j1939_ecu_get_by_addr_locked()
198 	struct j1939_ecu *ecu;  in j1939_ecu_get_by_addr()  local
201 	ecu = j1939_ecu_get_by_addr_locked(priv, addr);  in j1939_ecu_get_by_addr()
204 	return ecu;  in j1939_ecu_get_by_addr()
211 	struct j1939_ecu *ecu;  in j1939_ecu_find_by_name_locked()  local
215 	list_for_each_entry(ecu, &priv->ecus, list) {  in j1939_ecu_find_by_name_locked()
216 		if (ecu->name == name)  in j1939_ecu_find_by_name_locked()
217 			return ecu;  in j1939_ecu_find_by_name_locked()
226 	struct j1939_ecu *ecu;  in j1939_ecu_get_by_name_locked()  local
233 	ecu = j1939_ecu_find_by_name_locked(priv, name);  in j1939_ecu_get_by_name_locked()
234 	if (ecu)  in j1939_ecu_get_by_name_locked()
235 		j1939_ecu_get(ecu);  in j1939_ecu_get_by_name_locked()
237 	return ecu;  in j1939_ecu_get_by_name_locked()
242 	struct j1939_ecu *ecu;  in j1939_ecu_get_by_name()  local
245 	ecu = j1939_ecu_get_by_name_locked(priv, name);  in j1939_ecu_get_by_name()
248 	return ecu;  in j1939_ecu_get_by_name()
253 	struct j1939_ecu *ecu;  in j1939_name_to_addr()  local
260 	ecu = j1939_ecu_find_by_name_locked(priv, name);  in j1939_name_to_addr()
261 	if (ecu && j1939_ecu_is_mapped_locked(ecu))  in j1939_name_to_addr()
263 		addr = ecu->addr;  in j1939_name_to_addr()
278 	struct j1939_ecu *ecu;  in j1939_local_ecu_get()  local
289 	ecu = j1939_ecu_get_by_name_locked(priv, name);  in j1939_local_ecu_get()
290 	if (!ecu)  in j1939_local_ecu_get()
291 		ecu = j1939_ecu_create_locked(priv, name);  in j1939_local_ecu_get()
292 	err = PTR_ERR_OR_ZERO(ecu);  in j1939_local_ecu_get()
296 	ecu->nusers++;  in j1939_local_ecu_get()
298 	if (j1939_ecu_is_mapped_locked(ecu))  in j1939_local_ecu_get()
300 		priv->ents[ecu->addr].nusers++;  in j1939_local_ecu_get()
310 	struct j1939_ecu *ecu;  in j1939_local_ecu_put()  local
320 	ecu = j1939_ecu_find_by_name_locked(priv, name);  in j1939_local_ecu_put()
321 	if (WARN_ON_ONCE(!ecu))  in j1939_local_ecu_put()
324 	ecu->nusers--;  in j1939_local_ecu_put()
326 	if (j1939_ecu_is_mapped_locked(ecu))  in j1939_local_ecu_put()
328 		priv->ents[ecu->addr].nusers--;  in j1939_local_ecu_put()
329 	j1939_ecu_put(ecu);  in j1939_local_ecu_put()