BACKPORT: Input: mark input interfaces as non-seekable

drivers/input/evdev.c

 /*
  * Event char devices, giving access to raw input device events.
  *
  * Copyright (c) 1999-2002 Vojtech Pavlik
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  */
 
@@ skipping 260 matching lines @@
 
         spin_lock_init(&client->buffer_lock);
         client->evdev = evdev;
         evdev_attach_client(evdev, client);
 
         error = evdev_open_device(evdev);
         if (error)
                 goto err_free_client;
 
         file->private_data = client;
+        nonseekable_open(inode, file);
+
         return 0;
 
  err_free_client:
         evdev_detach_client(evdev, client);
         kfree(client);
  err_put_evdev:
         put_device(&evdev->dev);
         return error;
 }
 
@@ skipping 600 matching lines @@
 {
         input_unregister_handler(&evdev_handler);
 }
 
 module_init(evdev_init);
 module_exit(evdev_exit);
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
 MODULE_DESCRIPTION("Input driver event char devices");
 MODULE_LICENSE("GPL");