2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index c06fa4837232..1382af97db72 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -568,6 +568,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
         { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_ELSTER_UNICOM_PID) },
         { USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
                 .driver_info = (kernel_ulong_t)&ftdi_olimex_quirk },
         { },                                    /* Optional parameter entry */
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index abd632cdba9d..f6053daf02fb 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -536,6 +536,8 @@
 #define OLIMEX_VID                      0x15BA
 #define OLIMEX_ARM_USB_OCD_PID          0x0003
 
+/* www.elsterelectricity.com Elster Unicom III Optical Probe */
+#define FTDI_ELSTER_UNICOM_PID          0xE700 /* Product Id */
 
 /*
  * The Mobility Lab (TML)