38 struct evdev {  struct
57 	struct evdev *evdev;  argument
262 	struct evdev *evdev = client->evdev;  in evdev_pass_values()  local
296 		wake_up_interruptible(&evdev->wait);  in evdev_pass_values()
305 	struct evdev *evdev = handle->private;  in evdev_events()  local
316 	client = rcu_dereference(evdev->grab);  in evdev_events()
321 		list_for_each_entry_rcu(client, &evdev->client_list, node)  in evdev_events()
348 	struct evdev *evdev = client->evdev;  in evdev_flush()  local
350 	mutex_lock(&evdev->mutex);  in evdev_flush()
352 	if (evdev->exist && !client->revoked)  in evdev_flush()
353 		input_flush_device(&evdev->handle, file);  in evdev_flush()
355 	mutex_unlock(&evdev->mutex);  in evdev_flush()
361 	struct evdev *evdev = container_of(dev, struct evdev, dev);  in evdev_free()  local
363 	input_put_device(evdev->handle.dev);  in evdev_free()
364 	kfree(evdev);  in evdev_free()
371 static int evdev_grab(struct evdev *evdev, struct evdev_client *client)  in evdev_grab()  argument
375 	if (evdev->grab)  in evdev_grab()
378 	error = input_grab_device(&evdev->handle);  in evdev_grab()
382 	rcu_assign_pointer(evdev->grab, client);  in evdev_grab()
387 static int evdev_ungrab(struct evdev *evdev, struct evdev_client *client)  in evdev_ungrab()  argument
389 	struct evdev_client *grab = rcu_dereference_protected(evdev->grab,  in evdev_ungrab()
390 					lockdep_is_held(&evdev->mutex));  in evdev_ungrab()
395 	rcu_assign_pointer(evdev->grab, NULL);  in evdev_ungrab()
397 	input_release_device(&evdev->handle);  in evdev_ungrab()
402 static void evdev_attach_client(struct evdev *evdev,  in evdev_attach_client()  argument
405 	spin_lock(&evdev->client_lock);  in evdev_attach_client()
406 	list_add_tail_rcu(&client->node, &evdev->client_list);  in evdev_attach_client()
407 	spin_unlock(&evdev->client_lock);  in evdev_attach_client()
410 static void evdev_detach_client(struct evdev *evdev,  in evdev_detach_client()  argument
413 	spin_lock(&evdev->client_lock);  in evdev_detach_client()
415 	spin_unlock(&evdev->client_lock);  in evdev_detach_client()
419 static int evdev_open_device(struct evdev *evdev)  in evdev_open_device()  argument
423 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_open_device()
427 	if (!evdev->exist)  in evdev_open_device()
429 	else if (!evdev->open++) {  in evdev_open_device()
430 		retval = input_open_device(&evdev->handle);  in evdev_open_device()
432 			evdev->open--;  in evdev_open_device()
435 	mutex_unlock(&evdev->mutex);  in evdev_open_device()
439 static void evdev_close_device(struct evdev *evdev)  in evdev_close_device()  argument
441 	mutex_lock(&evdev->mutex);  in evdev_close_device()
443 	if (evdev->exist && !--evdev->open)  in evdev_close_device()
444 		input_close_device(&evdev->handle);  in evdev_close_device()
446 	mutex_unlock(&evdev->mutex);  in evdev_close_device()
453 static void evdev_hangup(struct evdev *evdev)  in evdev_hangup()  argument
457 	spin_lock(&evdev->client_lock);  in evdev_hangup()
458 	list_for_each_entry(client, &evdev->client_list, node)  in evdev_hangup()
460 	spin_unlock(&evdev->client_lock);  in evdev_hangup()
462 	wake_up_interruptible(&evdev->wait);  in evdev_hangup()
468 	struct evdev *evdev = client->evdev;  in evdev_release()  local
471 	mutex_lock(&evdev->mutex);  in evdev_release()
472 	evdev_ungrab(evdev, client);  in evdev_release()
473 	mutex_unlock(&evdev->mutex);  in evdev_release()
475 	evdev_detach_client(evdev, client);  in evdev_release()
482 	evdev_close_device(evdev);  in evdev_release()
498 	struct evdev *evdev = container_of(inode->i_cdev, struct evdev, cdev);  in evdev_open()  local
499 	unsigned int bufsize = evdev_compute_buffer_size(evdev->handle.dev);  in evdev_open()
513 	client->evdev = evdev;  in evdev_open()
514 	evdev_attach_client(evdev, client);  in evdev_open()
516 	error = evdev_open_device(evdev);  in evdev_open()
526 	evdev_detach_client(evdev, client);  in evdev_open()
535 	struct evdev *evdev = client->evdev;  in evdev_write()  local
542 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_write()
546 	if (!evdev->exist || client->revoked) {  in evdev_write()
559 		input_inject_event(&evdev->handle,  in evdev_write()
564 	mutex_unlock(&evdev->mutex);  in evdev_write()
590 	struct evdev *evdev = client->evdev;  in evdev_read()  local
599 		if (!evdev->exist || client->revoked)  in evdev_read()
626 			error = wait_event_interruptible(evdev->wait,  in evdev_read()
628 					!evdev->exist || client->revoked);  in evdev_read()
641 	struct evdev *evdev = client->evdev;  in evdev_poll()  local
644 	poll_wait(file, &evdev->wait, wait);  in evdev_poll()
646 	if (evdev->exist && !client->revoked)  in evdev_poll()
973 static int evdev_revoke(struct evdev *evdev, struct evdev_client *client,  in evdev_revoke()  argument
977 	evdev_ungrab(evdev, client);  in evdev_revoke()
978 	input_flush_device(&evdev->handle, file);  in evdev_revoke()
979 	wake_up_interruptible(&evdev->wait);  in evdev_revoke()
1063 	struct evdev *evdev = client->evdev;  in evdev_do_ioctl()  local
1064 	struct input_dev *dev = evdev->handle.dev;  in evdev_do_ioctl()
1101 		input_inject_event(&evdev->handle, EV_REP, REP_DELAY, u);  in evdev_do_ioctl()
1102 		input_inject_event(&evdev->handle, EV_REP, REP_PERIOD, v);  in evdev_do_ioctl()
1118 			return evdev_grab(evdev, client);  in evdev_do_ioctl()
1120 			return evdev_ungrab(evdev, client);  in evdev_do_ioctl()
1126 			return evdev_revoke(evdev, client, file);  in evdev_do_ioctl()
1290 	struct evdev *evdev = client->evdev;  in evdev_ioctl_handler()  local
1293 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_ioctl_handler()
1297 	if (!evdev->exist || client->revoked) {  in evdev_ioctl_handler()
1305 	mutex_unlock(&evdev->mutex);  in evdev_ioctl_handler()
1343 static void evdev_mark_dead(struct evdev *evdev)  in evdev_mark_dead()  argument
1345 	mutex_lock(&evdev->mutex);  in evdev_mark_dead()
1346 	evdev->exist = false;  in evdev_mark_dead()
1347 	mutex_unlock(&evdev->mutex);  in evdev_mark_dead()
1350 static void evdev_cleanup(struct evdev *evdev)  in evdev_cleanup()  argument
1352 	struct input_handle *handle = &evdev->handle;  in evdev_cleanup()
1354 	evdev_mark_dead(evdev);  in evdev_cleanup()
1355 	evdev_hangup(evdev);  in evdev_cleanup()
1357 	cdev_del(&evdev->cdev);  in evdev_cleanup()
1360 	if (evdev->open) {  in evdev_cleanup()
1373 	struct evdev *evdev;  in evdev_connect()  local
1385 	evdev = kzalloc(sizeof(struct evdev), GFP_KERNEL);  in evdev_connect()
1386 	if (!evdev) {  in evdev_connect()
1391 	INIT_LIST_HEAD(&evdev->client_list);  in evdev_connect()
1392 	spin_lock_init(&evdev->client_lock);  in evdev_connect()
1393 	mutex_init(&evdev->mutex);  in evdev_connect()
1394 	init_waitqueue_head(&evdev->wait);  in evdev_connect()
1395 	evdev->exist = true;  in evdev_connect()
1401 	dev_set_name(&evdev->dev, "event%d", dev_no);  in evdev_connect()
1403 	evdev->handle.dev = input_get_device(dev);  in evdev_connect()
1404 	evdev->handle.name = dev_name(&evdev->dev);  in evdev_connect()
1405 	evdev->handle.handler = handler;  in evdev_connect()
1406 	evdev->handle.private = evdev;  in evdev_connect()
1408 	evdev->dev.devt = MKDEV(INPUT_MAJOR, minor);  in evdev_connect()
1409 	evdev->dev.class = &input_class;  in evdev_connect()
1410 	evdev->dev.parent = &dev->dev;  in evdev_connect()
1411 	evdev->dev.release = evdev_free;  in evdev_connect()
1412 	device_initialize(&evdev->dev);  in evdev_connect()
1414 	error = input_register_handle(&evdev->handle);  in evdev_connect()
1418 	cdev_init(&evdev->cdev, &evdev_fops);  in evdev_connect()
1419 	evdev->cdev.kobj.parent = &evdev->dev.kobj;  in evdev_connect()
1420 	error = cdev_add(&evdev->cdev, evdev->dev.devt, 1);  in evdev_connect()
1424 	error = device_add(&evdev->dev);  in evdev_connect()
1431 	evdev_cleanup(evdev);  in evdev_connect()
1433 	input_unregister_handle(&evdev->handle);  in evdev_connect()
1435 	put_device(&evdev->dev);  in evdev_connect()
1443 	struct evdev *evdev = handle->private;  in evdev_disconnect()  local
1445 	device_del(&evdev->dev);  in evdev_disconnect()
1446 	evdev_cleanup(evdev);  in evdev_disconnect()
1447 	input_free_minor(MINOR(evdev->dev.devt));  in evdev_disconnect()
1449 	put_device(&evdev->dev);  in evdev_disconnect()