Index: wp-admin/includes/meta-boxes.php
===================================================================
--- wp-admin/includes/meta-boxes.php	(revision 34867)
+++ wp-admin/includes/meta-boxes.php	(working copy)
@@ -9,7 +9,15 @@
  *
  * @global string $action
  *
- * @param object $post
+ * @param WP_Post  $post Post object.
+ * @param array    $args {
+ *     Post submit meta box arguments.
+ *
+ *     @type string   $id       Meta box ID.
+ *     @type string   $title    Meta box title.
+ *     @type callable $callback Meta box display callback.
+ *     @type array    $args     Extra meta box arguments.
+ * }
  */
 function post_submit_meta_box($post, $args = array() ) {
 	global $action;