diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index 00397a807393..57d1f6d564e4 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -596,6 +596,15 @@ static int lan78xx_alloc_tx_resources(struct lan78xx_net *dev)
 				      dev->n_tx_urbs, dev->tx_urb_size, dev);
 }
 
+/* TSO seems to be having some issue with Selective Acknowledge (SACK) that
+ * results in lost data never being retransmitted.
+ * Disable it by default now, but adds a module parameter to enable it for
+ * debug purposes (the full cause is not currently understood).
+ */
+static bool enable_tso;
+module_param(enable_tso, bool, 0644);
+MODULE_PARM_DESC(enable_tso, "Enables TCP segmentation offload");
+
 static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data)
 {
 	u32 *buf;
@@ -3756,8 +3765,14 @@ static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf)
 	if (DEFAULT_RX_CSUM_ENABLE)
 		dev->net->features |= NETIF_F_RXCSUM;
 
-	if (DEFAULT_TSO_CSUM_ENABLE)
-		dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_SG;
+	if (DEFAULT_TSO_CSUM_ENABLE) {
+		dev->net->features |= NETIF_F_SG;
+		/* Use module parameter to control TCP segmentation offload as
+		 * it appears to cause issues.
+		 */
+		if (enable_tso)
+			dev->net->features |= NETIF_F_TSO | NETIF_F_TSO6;
+	}
 
 	if (DEFAULT_VLAN_RX_OFFLOAD)
 		dev->net->features |= NETIF_F_HW_VLAN_CTAG_RX;