26 #define bsg_dbg(bd, fmt, ...) \  argument
27 	pr_debug("%s: " fmt, (bd)->name, ##__VA_ARGS__)
198 	struct bsg_device *bd;  in bsg_alloc_device()  local
200 	bd = kzalloc(sizeof(struct bsg_device), GFP_KERNEL);  in bsg_alloc_device()
201 	if (unlikely(!bd))  in bsg_alloc_device()
204 	spin_lock_init(&bd->lock);  in bsg_alloc_device()
205 	bd->max_queue = BSG_DEFAULT_CMDS;  in bsg_alloc_device()
206 	INIT_HLIST_NODE(&bd->dev_list);  in bsg_alloc_device()
207 	return bd;  in bsg_alloc_device()
210 static int bsg_put_device(struct bsg_device *bd)  in bsg_put_device()  argument
212 	struct request_queue *q = bd->queue;  in bsg_put_device()
216 	if (!refcount_dec_and_test(&bd->ref_count)) {  in bsg_put_device()
221 	hlist_del(&bd->dev_list);  in bsg_put_device()
224 	bsg_dbg(bd, "tearing down\n");  in bsg_put_device()
229 	kfree(bd);  in bsg_put_device()
238 	struct bsg_device *bd;  in bsg_add_device()  local
246 	bd = bsg_alloc_device();  in bsg_add_device()
247 	if (!bd) {  in bsg_add_device()
252 	bd->queue = rq;  in bsg_add_device()
254 	refcount_set(&bd->ref_count, 1);  in bsg_add_device()
255 	hlist_add_head(&bd->dev_list, bsg_dev_idx_hash(iminor(inode)));  in bsg_add_device()
257 	strncpy(bd->name, dev_name(rq->bsg_dev.class_dev), sizeof(bd->name) - 1);  in bsg_add_device()
258 	bsg_dbg(bd, "bound to <%s>, max queue %d\n",  in bsg_add_device()
259 		format_dev_t(buf, inode->i_rdev), bd->max_queue);  in bsg_add_device()
261 	return bd;  in bsg_add_device()
266 	struct bsg_device *bd;  in __bsg_get_device()  local
270 	hlist_for_each_entry(bd, bsg_dev_idx_hash(minor), dev_list) {  in __bsg_get_device()
271 		if (bd->queue == q) {  in __bsg_get_device()
272 			refcount_inc(&bd->ref_count);  in __bsg_get_device()
276 	bd = NULL;  in __bsg_get_device()
278 	return bd;  in __bsg_get_device()
283 	struct bsg_device *bd;  in bsg_get_device()  local
293 		bd = ERR_PTR(-ENODEV);  in bsg_get_device()
297 	bd = __bsg_get_device(iminor(inode), bcd->queue);  in bsg_get_device()
298 	if (!bd)  in bsg_get_device()
299 		bd = bsg_add_device(inode, bcd->queue, file);  in bsg_get_device()
303 	return bd;  in bsg_get_device()
308 	struct bsg_device *bd;  in bsg_open()  local
310 	bd = bsg_get_device(inode, file);  in bsg_open()
312 	if (IS_ERR(bd))  in bsg_open()
313 		return PTR_ERR(bd);  in bsg_open()
315 	file->private_data = bd;  in bsg_open()
321 	struct bsg_device *bd = file->private_data;  in bsg_release()  local
324 	return bsg_put_device(bd);  in bsg_release()
327 static int bsg_get_command_q(struct bsg_device *bd, int __user *uarg)  in bsg_get_command_q()  argument
329 	return put_user(bd->max_queue, uarg);  in bsg_get_command_q()
332 static int bsg_set_command_q(struct bsg_device *bd, int __user *uarg)  in bsg_set_command_q()  argument
341 	spin_lock_irq(&bd->lock);  in bsg_set_command_q()
342 	bd->max_queue = queue;  in bsg_set_command_q()
343 	spin_unlock_irq(&bd->lock);  in bsg_set_command_q()
349 	struct bsg_device *bd = file->private_data;  in bsg_ioctl()  local
357 		return bsg_get_command_q(bd, uarg);  in bsg_ioctl()
359 		return bsg_set_command_q(bd, uarg);  in bsg_ioctl()
373 		return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg);  in bsg_ioctl()
375 		return bsg_sg_io(bd->queue, file->f_mode, uarg);  in bsg_ioctl()