28 struct evdev {  struct
47 	struct evdev *evdev;  argument
145 	ktime_t *ev_time = input_get_timestamp(client->evdev->handle.dev);  in __evdev_queue_syn_dropped()
294 	struct evdev *evdev = handle->private;  in evdev_events()  local
300 	client = rcu_dereference(evdev->grab);  in evdev_events()
305 		list_for_each_entry_rcu(client, &evdev->client_list, node)  in evdev_events()
331 	struct evdev *evdev = container_of(dev, struct evdev, dev);  in evdev_free()  local
333 	input_put_device(evdev->handle.dev);  in evdev_free()
334 	kfree(evdev);  in evdev_free()
341 static int evdev_grab(struct evdev *evdev, struct evdev_client *client)  in evdev_grab()  argument
345 	if (evdev->grab)  in evdev_grab()
348 	error = input_grab_device(&evdev->handle);  in evdev_grab()
352 	rcu_assign_pointer(evdev->grab, client);  in evdev_grab()
357 static int evdev_ungrab(struct evdev *evdev, struct evdev_client *client)  in evdev_ungrab()  argument
359 	struct evdev_client *grab = rcu_dereference_protected(evdev->grab,  in evdev_ungrab()
360 					lockdep_is_held(&evdev->mutex));  in evdev_ungrab()
365 	rcu_assign_pointer(evdev->grab, NULL);  in evdev_ungrab()
367 	input_release_device(&evdev->handle);  in evdev_ungrab()
372 static void evdev_attach_client(struct evdev *evdev,  in evdev_attach_client()  argument
375 	spin_lock(&evdev->client_lock);  in evdev_attach_client()
376 	list_add_tail_rcu(&client->node, &evdev->client_list);  in evdev_attach_client()
377 	spin_unlock(&evdev->client_lock);  in evdev_attach_client()
380 static void evdev_detach_client(struct evdev *evdev,  in evdev_detach_client()  argument
383 	spin_lock(&evdev->client_lock);  in evdev_detach_client()
385 	spin_unlock(&evdev->client_lock);  in evdev_detach_client()
389 static int evdev_open_device(struct evdev *evdev)  in evdev_open_device()  argument
393 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_open_device()
397 	if (!evdev->exist)  in evdev_open_device()
399 	else if (!evdev->open++) {  in evdev_open_device()
400 		retval = input_open_device(&evdev->handle);  in evdev_open_device()
402 			evdev->open--;  in evdev_open_device()
405 	mutex_unlock(&evdev->mutex);  in evdev_open_device()
409 static void evdev_close_device(struct evdev *evdev)  in evdev_close_device()  argument
411 	mutex_lock(&evdev->mutex);  in evdev_close_device()
413 	if (evdev->exist && !--evdev->open)  in evdev_close_device()
414 		input_close_device(&evdev->handle);  in evdev_close_device()
416 	mutex_unlock(&evdev->mutex);  in evdev_close_device()
423 static void evdev_hangup(struct evdev *evdev)  in evdev_hangup()  argument
427 	spin_lock(&evdev->client_lock);  in evdev_hangup()
428 	list_for_each_entry(client, &evdev->client_list, node) {  in evdev_hangup()
432 	spin_unlock(&evdev->client_lock);  in evdev_hangup()
438 	struct evdev *evdev = client->evdev;  in evdev_release()  local
441 	mutex_lock(&evdev->mutex);  in evdev_release()
443 	if (evdev->exist && !client->revoked)  in evdev_release()
444 		input_flush_device(&evdev->handle, file);  in evdev_release()
446 	evdev_ungrab(evdev, client);  in evdev_release()
447 	mutex_unlock(&evdev->mutex);  in evdev_release()
449 	evdev_detach_client(evdev, client);  in evdev_release()
456 	evdev_close_device(evdev);  in evdev_release()
472 	struct evdev *evdev = container_of(inode->i_cdev, struct evdev, cdev);  in evdev_open()  local
473 	unsigned int bufsize = evdev_compute_buffer_size(evdev->handle.dev);  in evdev_open()
484 	client->evdev = evdev;  in evdev_open()
485 	evdev_attach_client(evdev, client);  in evdev_open()
487 	error = evdev_open_device(evdev);  in evdev_open()
497 	evdev_detach_client(evdev, client);  in evdev_open()
506 	struct evdev *evdev = client->evdev;  in evdev_write()  local
513 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_write()
517 	if (!evdev->exist || client->revoked) {  in evdev_write()
530 		input_inject_event(&evdev->handle,  in evdev_write()
536 	mutex_unlock(&evdev->mutex);  in evdev_write()
562 	struct evdev *evdev = client->evdev;  in evdev_read()  local
571 		if (!evdev->exist || client->revoked)  in evdev_read()
600 					!evdev->exist || client->revoked);  in evdev_read()
613 	struct evdev *evdev = client->evdev;  in evdev_poll()  local
618 	if (evdev->exist && !client->revoked)  in evdev_poll()
943 static int evdev_revoke(struct evdev *evdev, struct evdev_client *client,  in evdev_revoke()  argument
947 	evdev_ungrab(evdev, client);  in evdev_revoke()
948 	input_flush_device(&evdev->handle, file);  in evdev_revoke()
1033 	struct evdev *evdev = client->evdev;  in evdev_do_ioctl()  local
1034 	struct input_dev *dev = evdev->handle.dev;  in evdev_do_ioctl()
1071 		input_inject_event(&evdev->handle, EV_REP, REP_DELAY, u);  in evdev_do_ioctl()
1072 		input_inject_event(&evdev->handle, EV_REP, REP_PERIOD, v);  in evdev_do_ioctl()
1088 			return evdev_grab(evdev, client);  in evdev_do_ioctl()
1090 			return evdev_ungrab(evdev, client);  in evdev_do_ioctl()
1096 			return evdev_revoke(evdev, client, file);  in evdev_do_ioctl()
1260 	struct evdev *evdev = client->evdev;  in evdev_ioctl_handler()  local
1263 	retval = mutex_lock_interruptible(&evdev->mutex);  in evdev_ioctl_handler()
1267 	if (!evdev->exist || client->revoked) {  in evdev_ioctl_handler()
1275 	mutex_unlock(&evdev->mutex);  in evdev_ioctl_handler()
1312 static void evdev_mark_dead(struct evdev *evdev)  in evdev_mark_dead()  argument
1314 	mutex_lock(&evdev->mutex);  in evdev_mark_dead()
1315 	evdev->exist = false;  in evdev_mark_dead()
1316 	mutex_unlock(&evdev->mutex);  in evdev_mark_dead()
1319 static void evdev_cleanup(struct evdev *evdev)  in evdev_cleanup()  argument
1321 	struct input_handle *handle = &evdev->handle;  in evdev_cleanup()
1323 	evdev_mark_dead(evdev);  in evdev_cleanup()
1324 	evdev_hangup(evdev);  in evdev_cleanup()
1327 	if (evdev->open) {  in evdev_cleanup()
1340 	struct evdev *evdev;  in evdev_connect()  local
1352 	evdev = kzalloc(sizeof(struct evdev), GFP_KERNEL);  in evdev_connect()
1353 	if (!evdev) {  in evdev_connect()
1358 	INIT_LIST_HEAD(&evdev->client_list);  in evdev_connect()
1359 	spin_lock_init(&evdev->client_lock);  in evdev_connect()
1360 	mutex_init(&evdev->mutex);  in evdev_connect()
1361 	evdev->exist = true;  in evdev_connect()
1367 	dev_set_name(&evdev->dev, "event%d", dev_no);  in evdev_connect()
1369 	evdev->handle.dev = input_get_device(dev);  in evdev_connect()
1370 	evdev->handle.name = dev_name(&evdev->dev);  in evdev_connect()
1371 	evdev->handle.handler = handler;  in evdev_connect()
1372 	evdev->handle.private = evdev;  in evdev_connect()
1374 	evdev->dev.devt = MKDEV(INPUT_MAJOR, minor);  in evdev_connect()
1375 	evdev->dev.class = &input_class;  in evdev_connect()
1376 	evdev->dev.parent = &dev->dev;  in evdev_connect()
1377 	evdev->dev.release = evdev_free;  in evdev_connect()
1378 	device_initialize(&evdev->dev);  in evdev_connect()
1380 	error = input_register_handle(&evdev->handle);  in evdev_connect()
1384 	cdev_init(&evdev->cdev, &evdev_fops);  in evdev_connect()
1386 	error = cdev_device_add(&evdev->cdev, &evdev->dev);  in evdev_connect()
1393 	evdev_cleanup(evdev);  in evdev_connect()
1394 	input_unregister_handle(&evdev->handle);  in evdev_connect()
1396 	put_device(&evdev->dev);  in evdev_connect()
1404 	struct evdev *evdev = handle->private;  in evdev_disconnect()  local
1406 	cdev_device_del(&evdev->cdev, &evdev->dev);  in evdev_disconnect()
1407 	evdev_cleanup(evdev);  in evdev_disconnect()
1408 	input_free_minor(MINOR(evdev->dev.devt));  in evdev_disconnect()
1410 	put_device(&evdev->dev);  in evdev_disconnect()