diff --git a/drivers/isdn/i4l/isdn_common.h b/drivers/isdn/i4l/isdn_common.h
index 082735d..9a471f6 100644
--- a/drivers/isdn/i4l/isdn_common.h
+++ b/drivers/isdn/i4l/isdn_common.h
@@ -29,19 +29,19 @@
 extern void isdn_unlock_drivers(void);
 extern void isdn_free_channel(int di, int ch, int usage);
 extern void isdn_all_eaz(int di, int ch);
-extern int  isdn_command(isdn_ctrl *);
-extern int  isdn_dc2minor(int di, int ch);
+extern int isdn_command(isdn_ctrl *);
+extern int isdn_dc2minor(int di, int ch);
 extern void isdn_info_update(void);
 extern char *isdn_map_eaz2msn(char *msn, int di);
 extern void isdn_timer_ctrl(int tf, int onoff);
 extern void isdn_unexclusive_channel(int di, int ch);
-extern int  isdn_getnum(char **);
-extern int  isdn_readbchan(int, int, u_char *, u_char *, int, wait_queue_head_t *);
-extern int  isdn_readbchan_tty(int, int, struct tty_struct *, int);
-extern int  isdn_get_free_channel(int, int, int, int, int, char *);
-extern int  isdn_writebuf_skb_stub(int, int, int, struct sk_buff *);
-extern int  register_isdn(isdn_if * i);
-extern int  isdn_msncmp( const char *,  const char *);
+extern int isdn_getnum(char **);
+extern int isdn_readbchan(int, int, u_char *, u_char *, int, wait_queue_head_t *);
+extern int isdn_readbchan_tty(int, int, struct tty_struct *, int);
+extern int isdn_get_free_channel(int, int, int, int, int, char *);
+extern int isdn_writebuf_skb_stub(int, int, int, struct sk_buff *);
+extern int register_isdn(isdn_if *i);
+extern int isdn_msncmp(const char *,  const char *);
 #if defined(ISDN_DEBUG_NET_DUMP) || defined(ISDN_DEBUG_MODEM_DUMP)
 extern void isdn_dumppkt(char *, u_char *, int, int);
 #endif