-static int ppp_comp_rput __P((queue_t *, mblk_t *));
-static int ppp_comp_rsrv __P((queue_t *));
-static int ppp_comp_wput __P((queue_t *, mblk_t *));
-static int ppp_comp_wsrv __P((queue_t *));
-static void ppp_comp_ccp __P((queue_t *, mblk_t *, int));
-static int msg_byte __P((mblk_t *, unsigned int));
+static int ppp_comp_rput(queue_t *, mblk_t *);
+static int ppp_comp_rsrv(queue_t *);
+static int ppp_comp_wput(queue_t *, mblk_t *);
+static int ppp_comp_wsrv(queue_t *);
+static void ppp_comp_ccp(queue_t *, mblk_t *, int);
+static int msg_byte(mblk_t *, unsigned int);