--- ppp-2.4.7.orig/pppd/tty.c	2014-08-09 14:31:39.000000000 +0200
+++ ppp-2.4.7/pppd/tty.c	2015-06-09 11:14:41.000000000 +0200
@@ -98,28 +98,28 @@
 #include "fsm.h"
 #include "lcp.h"
 
-void tty_process_extra_options __P((void));
-void tty_check_options __P((void));
-int  connect_tty __P((void));
-void disconnect_tty __P((void));
-void tty_close_fds __P((void));
-void cleanup_tty __P((void));
-void tty_do_send_config __P((int, u_int32_t, int, int));
+void tty_process_extra_options (void);
+void tty_check_options (void);
+int  connect_tty (void);
+void disconnect_tty (void);
+void tty_close_fds (void);
+void cleanup_tty (void);
+void tty_do_send_config (int, u_int32_t, int, int);
 
-static int setdevname __P((char *, char **, int));
-static int setspeed __P((char *, char **, int));
-static int setxonxoff __P((char **));
-static int setescape __P((char **));
-static void printescape __P((option_t *, void (*)(void *, char *,...),void *));
-static void finish_tty __P((void));
-static int start_charshunt __P((int, int));
-static void stop_charshunt __P((void *, int));
-static void charshunt_done __P((void *));
-static void charshunt __P((int, int, char *));
-static int record_write __P((FILE *, int code, u_char *buf, int nb,
-			     struct timeval *));
-static int open_socket __P((char *));
-static void maybe_relock __P((void *, int));
+static int setdevname (char *, char **, int);
+static int setspeed (char *, char **, int);
+static int setxonxoff (char **);
+static int setescape (char **);
+static void printescape (option_t *, void (*)(void *, char *,...),void *);
+static void finish_tty (void);
+static int start_charshunt (int, int);
+static void stop_charshunt (void *, int);
+static void charshunt_done (void *);
+static void charshunt (int, int, char *);
+static int record_write (FILE *, int code, u_char *buf, int nb,
+			     struct timeval *);
+static int open_socket (char *);
+static void maybe_relock (void *, int);
 
 static int pty_master;		/* fd for master side of pty */
 static int pty_slave;		/* fd for slave side of pty */
@@ -378,7 +378,7 @@ setescape(argv)
 static void
 printescape(opt, printer, arg)
     option_t *opt;
-    void (*printer) __P((void *, char *, ...));
+    void (*printer) (void *, char *, ...);
     void *arg;
 {
 	int n;