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 		memset(dev, 0, sizeof(struct w1_master));  in w1_alloc_dev()
95 		kfree(dev);  in w1_alloc_dev()
96 		dev = NULL;  in w1_alloc_dev()
99 	return dev;  in w1_alloc_dev()
102 static void w1_free_dev(struct w1_master *dev)  in w1_free_dev()  argument
104 	device_unregister(&dev->dev);  in w1_free_dev()
113 	struct w1_master *dev, *entry;  in w1_add_master_device()  local
141 	dev = w1_alloc_dev(id, w1_max_slave_count, w1_max_slave_ttl,  in w1_add_master_device()
143 	if (!dev) {  in w1_add_master_device()
148 	retval =  w1_create_master_attributes(dev);  in w1_add_master_device()
154 	memcpy(dev->bus_master, master, sizeof(struct w1_bus_master));  in w1_add_master_device()
156 	dev->initialized = 1;  in w1_add_master_device()
158 	dev->thread = kthread_run(&w1_process, dev, "%s", dev->name);  in w1_add_master_device()
159 	if (IS_ERR(dev->thread)) {  in w1_add_master_device()
160 		retval = PTR_ERR(dev->thread);  in w1_add_master_device()
161 		dev_err(&dev->dev,  in w1_add_master_device()
168 	list_add(&dev->w1_master_entry, &w1_masters);  in w1_add_master_device()
172 	msg.id.mst.id = dev->id;  in w1_add_master_device()
174 	w1_netlink_send(dev, &msg);  in w1_add_master_device()
180 	set_bit(W1_ABORT_SEARCH, &dev->flags);  in w1_add_master_device()
181 	kthread_stop(dev->thread);  in w1_add_master_device()
184 	w1_destroy_master_attributes(dev);  in w1_add_master_device()
186 	w1_free_dev(dev);  in w1_add_master_device()
191 void __w1_remove_master_device(struct w1_master *dev)  in __w1_remove_master_device()  argument
197 	list_del(&dev->w1_master_entry);  in __w1_remove_master_device()
200 	set_bit(W1_ABORT_SEARCH, &dev->flags);  in __w1_remove_master_device()
201 	kthread_stop(dev->thread);  in __w1_remove_master_device()
203 	mutex_lock(&dev->mutex);  in __w1_remove_master_device()
204 	mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
205 	list_for_each_entry_safe(sl, sln, &dev->slist, w1_slave_entry) {  in __w1_remove_master_device()
206 		mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
208 		mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
210 	w1_destroy_master_attributes(dev);  in __w1_remove_master_device()
211 	mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
212 	mutex_unlock(&dev->mutex);  in __w1_remove_master_device()
213 	atomic_dec(&dev->refcnt);  in __w1_remove_master_device()
215 	while (atomic_read(&dev->refcnt)) {  in __w1_remove_master_device()
216 		dev_info(&dev->dev, "Waiting for %s to become free: refcnt=%d.\n",  in __w1_remove_master_device()
217 				dev->name, atomic_read(&dev->refcnt));  in __w1_remove_master_device()
221 		mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
222 		w1_process_callbacks(dev);  in __w1_remove_master_device()
223 		mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
225 	mutex_lock(&dev->list_mutex);  in __w1_remove_master_device()
226 	w1_process_callbacks(dev);  in __w1_remove_master_device()
227 	mutex_unlock(&dev->list_mutex);  in __w1_remove_master_device()
230 	msg.id.mst.id = dev->id;  in __w1_remove_master_device()
232 	w1_netlink_send(dev, &msg);  in __w1_remove_master_device()
234 	w1_free_dev(dev);  in __w1_remove_master_device()
243 	struct w1_master *dev, *found = NULL;  in w1_remove_master_device()  local
245 	list_for_each_entry(dev, &w1_masters, w1_master_entry) {  in w1_remove_master_device()
246 		if (!dev->initialized)  in w1_remove_master_device()
249 		if (dev->bus_master->data == bm->data) {  in w1_remove_master_device()
250 			found = dev;  in w1_remove_master_device()