+#ifndef DEV_CONFIG_CDC
+
+/* "SAFE" loosely follows CDC WMC MDLM, violating the spec in various
+ * ways: data endpoints live in the control interface, there's no data
+ * interface, and it's not used to talk to a cell phone radio.
+ */
+
+static const struct usb_cdc_mdlm_desc mdlm_desc = {
+ .bLength = sizeof mdlm_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_MDLM_TYPE,
+
+ .bcdVersion = __constant_cpu_to_le16(0x0100),
+ .bGUID = {
+ 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
+ 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
+ },
+};
+
+/* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we
+ * can't really use its struct. All we do here is say that we're using
+ * the submode of "SAFE" which directly matches the CDC Subset.
+ */
+static const u8 mdlm_detail_desc[] = {
+ 6,
+ USB_DT_CS_INTERFACE,
+ USB_CDC_MDLM_DETAIL_TYPE,
+
+ 0, /* "SAFE" */
+ 0, /* network control capabilities (none) */
+ 0, /* network data capabilities ("raw" encapsulation) */
+};
+
+#endif