OcurriĆ³ un Error con la Base de Datos

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND usu.id=pos.id_usuario AND pos.estado = 1' at line 4

SELECT pos.* FROM cms_usuarios AS usu, cms_foro_post AS pos WHERE usu.id= AND usu.id=pos.id_usuario AND pos.estado = 1

Filename: /home/quaronl/public_html/comunidad/models/foro_post.php

Line Number: 150