214 	struct event_device_data *dev_data = adev->driver_data;  in enqueue_events()  local
244 		spin_lock(&dev_data->queue_lock);  in enqueue_events()
245 		old_event = event_queue_push(dev_data->events, queue_event);  in enqueue_events()
246 		spin_unlock(&dev_data->queue_lock);  in enqueue_events()
248 		wake_up_interruptible(&dev_data->wq);  in enqueue_events()
306 	struct event_device_data *dev_data;  in event_open()  local
308 	dev_data = container_of(inode->i_cdev, struct event_device_data, cdev);  in event_open()
309 	if (!dev_data->exist)  in event_open()
312 	if (atomic_cmpxchg(&dev_data->available, 1, 0) == 0)  in event_open()
316 	get_device(&dev_data->dev);  in event_open()
318 	filp->private_data = dev_data;  in event_open()
325 	struct event_device_data *dev_data = filp->private_data;  in event_poll()  local
328 	poll_wait(filp, &dev_data->wq, wait);  in event_poll()
329 	if (!dev_data->exist)  in event_poll()
331 	if (!event_queue_empty(dev_data->events))  in event_poll()
355 	struct event_device_data *dev_data = filp->private_data;  in event_read()  local
364 	spin_lock(&dev_data->queue_lock);  in event_read()
365 	while (event_queue_empty(dev_data->events)) {  in event_read()
366 		spin_unlock(&dev_data->queue_lock);  in event_read()
370 		err = wait_event_interruptible(dev_data->wq,  in event_read()
371 					!event_queue_empty(dev_data->events) ||  in event_read()
372 					!dev_data->exist);  in event_read()
377 		if (!dev_data->exist)  in event_read()
379 		spin_lock(&dev_data->queue_lock);  in event_read()
381 	event = event_queue_pop(dev_data->events);  in event_read()
382 	spin_unlock(&dev_data->queue_lock);  in event_read()
393 	struct event_device_data *dev_data = filp->private_data;  in event_release()  local
395 	atomic_set(&dev_data->available, 1);  in event_release()
396 	put_device(&dev_data->dev);  in event_release()
419 	struct event_device_data *dev_data;  in free_device_data()  local
421 	dev_data = container_of(d, struct event_device_data, dev);  in free_device_data()
422 	event_queue_free(dev_data->events);  in free_device_data()
423 	kfree(dev_data);  in free_device_data()
426 static void hangup_device(struct event_device_data *dev_data)  in hangup_device()  argument
428 	dev_data->exist = false;  in hangup_device()
430 	wake_up_interruptible(&dev_data->wq);  in hangup_device()
431 	put_device(&dev_data->dev);  in hangup_device()
450 	struct event_device_data *dev_data;  in event_device_add()  local
460 	dev_data = kzalloc(sizeof(*dev_data), GFP_KERNEL);  in event_device_add()
461 	if (!dev_data) {  in event_device_add()
467 	adev->driver_data = dev_data;  in event_device_add()
468 	dev_data->events = event_queue_new(queue_size);  in event_device_add()
469 	if (!dev_data->events) {  in event_device_add()
470 		kfree(dev_data);  in event_device_add()
474 	spin_lock_init(&dev_data->queue_lock);  in event_device_add()
475 	init_waitqueue_head(&dev_data->wq);  in event_device_add()
476 	dev_data->exist = true;  in event_device_add()
477 	atomic_set(&dev_data->available, 1);  in event_device_add()
480 	dev_data->dev.devt = MKDEV(event_major, minor);  in event_device_add()
481 	dev_data->dev.class = &event_class;  in event_device_add()
482 	dev_data->dev.release = free_device_data;  in event_device_add()
483 	dev_set_name(&dev_data->dev, EVENT_DEV_NAME_FMT, minor);  in event_device_add()
484 	device_initialize(&dev_data->dev);  in event_device_add()
487 	cdev_init(&dev_data->cdev, &event_fops);  in event_device_add()
488 	error = cdev_device_add(&dev_data->cdev, &dev_data->dev);  in event_device_add()
495 	hangup_device(dev_data);  in event_device_add()
503 	struct event_device_data *dev_data = adev->driver_data;  in event_device_remove()  local
505 	cdev_device_del(&dev_data->cdev, &dev_data->dev);  in event_device_remove()
506 	ida_free(&event_ida, MINOR(dev_data->dev.devt));  in event_device_remove()
507 	hangup_device(dev_data);  in event_device_remove()