Merge "wifi: Prevent returning an invalid factory MAC address" am: 6119f16921 am: 3e6084c05d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1496341

Change-Id: If67f489d54f6ce3f4c905b5bc3497adc6b986ccb
diff --git a/wifi/1.4/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
index 49f383a..bc6701d 100644
--- a/wifi/1.4/default/wifi_sta_iface.cpp
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -636,6 +636,10 @@
 WifiStaIface::getFactoryMacAddressInternal() {
     std::array<uint8_t, 6> mac =
         iface_util_.lock()->getFactoryMacAddress(ifname_);
+    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 &&
+        mac[4] == 0 && mac[5] == 0) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
+    }
     return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
 }