--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -646,6 +646,7 @@ static void option_instat_callback(struc
 
 
 static const struct usb_device_id option_ids[] = {
+	{ USB_DEVICE(MEDIATEK_VENDOR_ID, 0x7127) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
@@ -2423,6 +2424,15 @@ static int option_probe(struct usb_seria
 	if (device_flags & NUMEP2 && iface_desc->bNumEndpoints != 2)
 		return -ENODEV;
 
+	if(id->idVendor == MEDIATEK_VENDOR_ID &&
+ 	     (id->idProduct == cpu_to_le16(0x7127) &&
+	        ((serial->interface->cur_altsetting->desc.bInterfaceNumber <= 5) ||
+		(serial->interface->cur_altsetting->desc.bInterfaceNumber >= 7))))
+	{
+	    printk(KERN_INFO "Discovery the interface for Fibocom & MEDIATEK.");
+	    return -ENODEV;
+	}
+
 	/* Store the device flags so we can use them during attach. */
 	usb_set_serial_data(serial, (void *)device_flags);