This is necessary in OHCI and will probably be used in EHCI also to keep one endpoint construct for each pipe open instead on creating and deleting it for each transfer. * Pseudo implemented set_pipe_policy for isochronous pipes that makes use of the new notification system. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18945 a95241bf-73f2-0310-859d-f6bbb57e9c96