45 static unsigned int bsg_timeout(struct bsg_device *bd, struct sg_io_v4 *hdr)  in bsg_timeout()  argument
51 	else if (bd->timeout)  in bsg_timeout()
52 		timeout = bd->timeout;  in bsg_timeout()
57 static int bsg_sg_io(struct bsg_device *bd, bool open_for_write,  in bsg_sg_io()  argument
67 	ret = bd->sg_io_fn(bd->queue, &hdr, open_for_write,  in bsg_sg_io()
68 			   bsg_timeout(bd, &hdr));  in bsg_sg_io()
87 static int bsg_get_command_q(struct bsg_device *bd, int __user *uarg)  in bsg_get_command_q()  argument
89 	return put_user(READ_ONCE(bd->max_queue), uarg);  in bsg_get_command_q()
92 static int bsg_set_command_q(struct bsg_device *bd, int __user *uarg)  in bsg_set_command_q()  argument
100 	WRITE_ONCE(bd->max_queue, max_queue);  in bsg_set_command_q()
106 	struct bsg_device *bd = to_bsg_device(file_inode(file));  in bsg_ioctl()  local
107 	struct request_queue *q = bd->queue;  in bsg_ioctl()
117 		return bsg_get_command_q(bd, uarg);  in bsg_ioctl()
119 		return bsg_set_command_q(bd, uarg);  in bsg_ioctl()
133 		bd->timeout = clock_t_to_jiffies(val);  in bsg_ioctl()
136 		return jiffies_to_clock_t(bd->timeout);  in bsg_ioctl()
138 		return put_user(min(bd->reserved_size, queue_max_bytes(q)),  in bsg_ioctl()
145 		bd->reserved_size =  in bsg_ioctl()
151 		return bsg_sg_io(bd, file->f_mode & FMODE_WRITE, uarg);  in bsg_ioctl()
172 	struct bsg_device *bd = container_of(dev, struct bsg_device, device);  in bsg_device_release()  local
174 	ida_free(&bsg_minor_ida, MINOR(bd->device.devt));  in bsg_device_release()
175 	kfree(bd);  in bsg_device_release()
178 void bsg_unregister_queue(struct bsg_device *bd)  in bsg_unregister_queue()  argument
180 	struct gendisk *disk = bd->queue->disk;  in bsg_unregister_queue()
184 	cdev_device_del(&bd->cdev, &bd->device);  in bsg_unregister_queue()
185 	put_device(&bd->device);  in bsg_unregister_queue()
192 	struct bsg_device *bd;  in bsg_register_queue()  local
195 	bd = kzalloc(sizeof(*bd), GFP_KERNEL);  in bsg_register_queue()
196 	if (!bd)  in bsg_register_queue()
198 	bd->max_queue = BSG_DEFAULT_CMDS;  in bsg_register_queue()
199 	bd->reserved_size = INT_MAX;  in bsg_register_queue()
200 	bd->queue = q;  in bsg_register_queue()
201 	bd->sg_io_fn = sg_io_fn;  in bsg_register_queue()
207 		kfree(bd);  in bsg_register_queue()
210 	bd->device.devt = MKDEV(bsg_major, ret);  in bsg_register_queue()
211 	bd->device.class = &bsg_class;  in bsg_register_queue()
212 	bd->device.parent = parent;  in bsg_register_queue()
213 	bd->device.release = bsg_device_release;  in bsg_register_queue()
214 	dev_set_name(&bd->device, "%s", name);  in bsg_register_queue()
215 	device_initialize(&bd->device);  in bsg_register_queue()
217 	cdev_init(&bd->cdev, &bsg_fops);  in bsg_register_queue()
218 	bd->cdev.owner = THIS_MODULE;  in bsg_register_queue()
219 	ret = cdev_device_add(&bd->cdev, &bd->device);  in bsg_register_queue()
224 		ret = sysfs_create_link(&q->disk->queue_kobj, &bd->device.kobj,  in bsg_register_queue()
230 	return bd;  in bsg_register_queue()
233 	cdev_device_del(&bd->cdev, &bd->device);  in bsg_register_queue()
235 	put_device(&bd->device);  in bsg_register_queue()