diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index d31fc2b..61ebddc4 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -89,6 +89,7 @@
 #define OPTION_PRODUCT_ETNA_MODEM_GT		0x7041
 #define OPTION_PRODUCT_ETNA_MODEM_EX		0x7061
 #define OPTION_PRODUCT_ETNA_KOI_MODEM		0x7100
+#define OPTION_PRODUCT_GTM380_MODEM		0x7201
 
 #define HUAWEI_VENDOR_ID			0x12D1
 #define HUAWEI_PRODUCT_E600			0x1001
@@ -322,6 +323,7 @@
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GTM380_MODEM) },
 	{ USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_Q101) },
 	{ USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_Q111) },
 	{ USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLX) },