4 files changed, 4 insertions, 8 deletions
diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c
index d42ec7d1bc14..012da4b8abe0 100644
--- a/drivers/net/can/slcan.c
+++ b/drivers/net/can/slcan.c
@@ -664,10 +664,9 @@ static void slcan_close(struct tty_struct *tty)
 	/* This will complete via sl_free_netdev */
 }
 
-static int slcan_hangup(struct tty_struct *tty)
+static void slcan_hangup(struct tty_struct *tty)
 {
 	slcan_close(tty);
-	return 0;
 }
 
 /* Perform I/O control on an active SLCAN channel. */
diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index 29a93d6bfe37..78ec1bcebc4f 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -247,10 +247,9 @@ ppp_asynctty_close(struct tty_struct *tty)
  * Wait for I/O to driver to complete and unregister PPP channel.
  * This is already done by the close routine, so just call that.
  */
-static int ppp_asynctty_hangup(struct tty_struct *tty)
+static void ppp_asynctty_hangup(struct tty_struct *tty)
 {
 	ppp_asynctty_close(tty);
-	return 0;
 }
 
 /*
diff --git a/drivers/net/ppp/ppp_synctty.c b/drivers/net/ppp/ppp_synctty.c
index af3e048695b6..c249db7c466a 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -245,10 +245,9 @@ ppp_sync_close(struct tty_struct *tty)
  * Wait for I/O to driver to complete and unregister PPP channel.
  * This is already done by the close routine, so just call that.
  */
-static int ppp_sync_hangup(struct tty_struct *tty)
+static void ppp_sync_hangup(struct tty_struct *tty)
 {
 	ppp_sync_close(tty);
-	return 0;
 }
 
 /*
diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c
index 5435b5689ce6..8be9d0c351b5 100644
--- a/drivers/net/slip/slip.c
+++ b/drivers/net/slip/slip.c
@@ -907,10 +907,9 @@ static void slip_close(struct tty_struct *tty)
 	/* This will complete via sl_free_netdev */
 }
 
-static int slip_hangup(struct tty_struct *tty)
+static void slip_hangup(struct tty_struct *tty)
 {
 	slip_close(tty);
-	return 0;
 }
  /************************************************************************
   *			STANDARD SLIP ENCAPSULATION		  	 *