diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index b458aedc5fb6ae541166fc8f66da7cc91f5cb22f..a20da8528a5f8b1826134b55be9ffdf00102d1b3 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -337,6 +337,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
 	{ USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
 	{ USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
 	{ USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index 04ef90fcb8766d3adffa2f345a178e55a5f7c12b..9f7343a45424494648f3d4341ed9f59249e09f9d 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -182,6 +182,10 @@
 /* http://home.earthlink.net/~jrhees/USBUIRT/index.htm */
 #define FTDI_USB_UIRT_PID	0xF850	/* Product Id */
 
+/* TNC-X USB-to-packet-radio adapter, versions prior to 3.0 (DLP module) */
+
+#define FTDI_TNC_X_PID		0xEBE0
+
 /*
  * ELV USB devices submitted by Christian Abt of ELV (www.elv.de).
  * All of these devices use FTDI's vendor ID (0x0403).