diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 77b3648..caf6e4d 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -4005,10 +4005,9 @@
  *
  * skb  socket buffer containing HDLC frame
  * dev  pointer to network device structure
- *
- * returns 0 if success, otherwise error code
  */
-static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
 {
 	MGSLPC_INFO *info = dev_to_port(dev);
 	unsigned long flags;
@@ -4043,7 +4042,7 @@
 	}
 	spin_unlock_irqrestore(&info->lock,flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /**
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 813552f..4846b73 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -7697,10 +7697,9 @@
  *
  * skb  socket buffer containing HDLC frame
  * dev  pointer to network device structure
- *
- * returns 0 if success, otherwise error code
  */
-static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
 {
 	struct mgsl_struct *info = dev_to_port(dev);
 	unsigned long flags;
@@ -7731,7 +7730,7 @@
 	 	usc_start_transmitter(info);
 	spin_unlock_irqrestore(&info->irq_spinlock,flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /**
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 91f20a9..8678f0c 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -1497,10 +1497,9 @@
  *
  * skb  socket buffer containing HDLC frame
  * dev  pointer to network device structure
- *
- * returns 0 if success, otherwise error code
  */
-static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
 {
 	struct slgt_info *info = dev_to_port(dev);
 	unsigned long flags;
@@ -1529,7 +1528,7 @@
 	update_tx_timer(info);
 	spin_unlock_irqrestore(&info->lock,flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /**
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 8d4a2a8..2b18adc 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -1608,10 +1608,9 @@
  *
  * skb  socket buffer containing HDLC frame
  * dev  pointer to network device structure
- *
- * returns 0 if success, otherwise error code
  */
-static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
+				      struct net_device *dev)
 {
 	SLMP_INFO *info = dev_to_port(dev);
 	unsigned long flags;
@@ -1642,7 +1641,7 @@
 	 	tx_start(info);
 	spin_unlock_irqrestore(&info->lock,flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /**