45 	struct w1_master *dev;  in w1_alloc_dev()  local
51 	dev = kzalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);  in w1_alloc_dev()
52 	if (!dev) {  in w1_alloc_dev()
59 	dev->bus_master = (struct w1_bus_master *)(dev + 1);  in w1_alloc_dev()
61 	dev->owner		= THIS_MODULE;  in w1_alloc_dev()
62 	dev->max_slave_count	= slave_count;  in w1_alloc_dev()
63 	dev->slave_count	= 0;  in w1_alloc_dev()
64 	dev->attempts		= 0;  in w1_alloc_dev()
65 	dev->initialized	= 0;  in w1_alloc_dev()
66 	dev->id			= id;  in w1_alloc_dev()
67 	dev->slave_ttl		= slave_ttl;  in w1_alloc_dev()
68 	dev->search_count	= w1_search_count;  in w1_alloc_dev()
69 	dev->enable_pullup	= w1_enable_pullup;  in w1_alloc_dev()
74 	atomic_set(&dev->refcnt, 2);  in w1_alloc_dev()
76 	INIT_LIST_HEAD(&dev->slist);  in w1_alloc_dev()
77 	INIT_LIST_HEAD(&dev->async_list);  in w1_alloc_dev()
78 	mutex_init(&dev->mutex);  in w1_alloc_dev()
79 	mutex_init(&dev->bus_mutex);  in w1_alloc_dev()
80 	mutex_init(&dev->list_mutex);  in w1_alloc_dev()
82 	memcpy(&dev->dev, device, sizeof(struct device));  in w1_alloc_dev()
83 	dev_set_name(&dev->dev, "w1_bus_master%u", dev->id);  in w1_alloc_dev()
84 	snprintf(dev->name, sizeof(dev->name), "w1_bus_master%u", dev->id);  in w1_alloc_dev()
85 	dev->dev.init_name = dev->name;  in w1_alloc_dev()
87 	dev->driver = driver;  in w1_alloc_dev()
89 	dev->seq = 1;  in w1_alloc_dev()
91 	err = device_register(&dev->dev);  in w1_alloc_dev()
94 		put_device(&dev->dev);  in w1_alloc_dev()
95 		dev = NULL;  in w1_alloc_dev()
98 	return dev;  in w1_alloc_dev()
101 static void w1_free_dev(struct w1_master *dev)  in w1_free_dev()  argument
103 	device_unregister(&dev->dev);  in w1_free_dev()
112 	struct w1_master *dev, *entry;  in w1_add_master_device()  local
140 	dev = w1_alloc_dev(id, w1_max_slave_count, w1_max_slave_ttl,  in w1_add_master_device()
142 	if (!dev) {  in w1_add_master_device()
147 	retval =  w1_create_master_attributes(dev);  in w1_add_master_device()
153 	memcpy(dev->bus_master, master, sizeof(struct w1_bus_master));  in w1_add_master_device()
155 	dev->initialized = 1;  in w1_add_master_device()
157 	dev->thread = kthread_run(&w1_process, dev, "%s", dev->name);  in w1_add_master_device()
158 	if (IS_ERR(dev->thread)) {  in w1_add_master_device()
159 		retval = PTR_ERR(dev->thread);  in w1_add_master_device()
160 		dev_err(&dev->dev,  in w1_add_master_device()
167 	list_add(&dev->w1_master_entry, &w1_masters);  in w1_add_master_device()
171 	msg.id.mst.id = dev->id;  in w1_add_master_device()
173 	w1_netlink_send(dev, &msg);  in w1_add_master_device()
179 	set_bit(W1_ABORT_SEARCH, &dev->flags);  in w1_add_master_device()
180 	kthread_stop(dev->thread);  in w1_add_master_device()
183 	w1_destroy_master_attributes(dev);  in w1_add_master_device()
185 	w1_free_dev(dev);  in w1_add_master_device()
190 void __w1_remove_master_device(struct w1_master *dev)  in __w1_remove_master_device()  argument
196 	list_del(&dev->w1_master_entry);  in __w1_remove_master_device()
199 	set_bit(W1_ABORT_SEARCH, &dev->flags);  in __w1_remove_master_device()
200 	kthread_stop(dev->thread);  in __w1_remove_master_device()
202 	mutex_lock(&dev->mutex);  in __w1_remove_master_device()
203 	mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
204 	list_for_each_entry_safe(sl, sln, &dev->slist, w1_slave_entry) {  in __w1_remove_master_device()
205 		mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
207 		mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
209 	w1_destroy_master_attributes(dev);  in __w1_remove_master_device()
210 	mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
211 	mutex_unlock(&dev->mutex);  in __w1_remove_master_device()
212 	atomic_dec(&dev->refcnt);  in __w1_remove_master_device()
214 	while (atomic_read(&dev->refcnt)) {  in __w1_remove_master_device()
215 		dev_info(&dev->dev, "Waiting for %s to become free: refcnt=%d.\n",  in __w1_remove_master_device()
216 				dev->name, atomic_read(&dev->refcnt));  in __w1_remove_master_device()
220 		mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
221 		w1_process_callbacks(dev);  in __w1_remove_master_device()
222 		mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
224 	mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
225 	w1_process_callbacks(dev);  in __w1_remove_master_device()
226 	mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
229 	msg.id.mst.id = dev->id;  in __w1_remove_master_device()
231 	w1_netlink_send(dev, &msg);  in __w1_remove_master_device()
233 	w1_free_dev(dev);  in __w1_remove_master_device()
242 	struct w1_master *dev, *found = NULL;  in w1_remove_master_device()  local
244 	list_for_each_entry(dev, &w1_masters, w1_master_entry) {  in w1_remove_master_device()
245 		if (!dev->initialized)  in w1_remove_master_device()
248 		if (dev->bus_master->data == bm->data) {  in w1_remove_master_device()
249 			found = dev;  in w1_remove_master_device()