Arrange posts by "order" attribute in WordPress

It's just simple as this function:

function my_get_posts( $query ) {

    if ( is_home() && false == $query->query_vars['suppress_filters'] )
                $query->set('orderby', 'menu_order');
                $query->set('order', 'ASC'); 

    return $query;
}

Basically, you need to order the posts by menu_order attribute.