diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index 5bada7f..f0edb87 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -111,6 +111,7 @@
 #define SEALEVEL_2102_PID	0x2102	/* SeaLINK+485 (2102) */
 #define SEALEVEL_2103_PID	0x2103	/* SeaLINK+232I (2103) */
 #define SEALEVEL_2104_PID	0x2104	/* SeaLINK+485I (2104) */
+#define SEALEVEL_2106_PID	0x9020	/* SeaLINK+422 (2106) */
 #define SEALEVEL_2201_1_PID	0x2211	/* SeaPORT+2/232 (2201) Port 1 */
 #define SEALEVEL_2201_2_PID	0x2221	/* SeaPORT+2/232 (2201) Port 2 */
 #define SEALEVEL_2202_1_PID	0x2212	/* SeaPORT+2/485 (2202) Port 1 */