diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index 9ac1fddda36c5..f5c89c582fb93 100755
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -368,6 +368,9 @@
     <!-- Boolean indicating whether the wifi chipset has dual frequency band support -->
     <bool translatable="false" name="config_wifi_dual_band_support">false</bool>
 
+    <!-- Boolean indicating whether Hotspot 2.0/Passpoint and ANQP queries is enabled -->
+    <bool translatable="false" name="config_wifi_hotspot2_enabled">true</bool>
+
     <!-- Device type information conforming to Annex B format in WiFi Direct specification.
          The default represents a dual-mode smartphone -->
     <string translatable="false" name="config_wifi_p2p_device_type">10-0050F204-5</string>
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 6386ce8a32599..3a1a1568074d9 100755
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1649,6 +1649,7 @@
   <java-symbol type="bool" name="config_supportLongPressPowerWhenNonInteractive" />
   <java-symbol type="bool" name="config_wifi_background_scan_support" />
   <java-symbol type="bool" name="config_wifi_dual_band_support" />
+  <java-symbol type="bool" name="config_wifi_hotspot2_enabled" />
   <java-symbol type="bool" name="config_wimaxEnabled" />
   <java-symbol type="bool" name="show_ongoing_ime_switcher" />
   <java-symbol type="color" name="config_defaultNotificationColor" />
diff --git a/wifi/java/android/net/wifi/WifiInfo.java b/wifi/java/android/net/wifi/WifiInfo.java
index dbfd4ef41ead9..2ba38e18fd1c0 100644
--- a/wifi/java/android/net/wifi/WifiInfo.java
+++ b/wifi/java/android/net/wifi/WifiInfo.java
@@ -167,15 +167,24 @@ public class WifiInfo implements Parcelable {
             long txbad = stats.lostmpdu_be + stats.lostmpdu_bk
                     + stats.lostmpdu_vi + stats.lostmpdu_vo;
 
-            txBadRate = (txBadRate * 0.5)
-                + ((double) (txbad - txBad) * 0.5);
-            txSuccessRate = (txSuccessRate * 0.5)
-                + ((double) (txgood - txSuccess) * 0.5);
-            rxSuccessRate = (rxSuccessRate * 0.5)
-                + ((double) (rxgood - rxSuccess) * 0.5);
-            txRetriesRate = (txRetriesRate * 0.5)
-                + ((double) (txretries - txRetries) * 0.5);
-
+            if (txBad <= txbad
+                    && txSuccess <= txgood
+                    && rxSuccess <= rxgood
+                    && txRetries <= txretries) {
+                txBadRate = (txBadRate * 0.5)
+                        + ((double) (txbad - txBad) * 0.5);
+                txSuccessRate = (txSuccessRate * 0.5)
+                        + ((double) (txgood - txSuccess) * 0.5);
+                rxSuccessRate = (rxSuccessRate * 0.5)
+                        + ((double) (rxgood - rxSuccess) * 0.5);
+                txRetriesRate = (txRetriesRate * 0.5)
+                        + ((double) (txretries - txRetries) * 0.5);
+            } else {
+                txBadRate = 0;
+                txSuccessRate = 0;
+                rxSuccessRate = 0;
+                txRetriesRate = 0;
+            }
             txBad = txbad;
             txSuccess = txgood;
             rxSuccess = rxgood;
@@ -204,11 +213,15 @@ public class WifiInfo implements Parcelable {
         txRetries = 0;
         txBadRate = 0;
         txRetriesRate = 0;
-
-        txSuccessRate = (txSuccessRate * 0.5)
-                + ((double) (txPackets - txSuccess) * 0.5);
-        rxSuccessRate = (rxSuccessRate * 0.5)
-                + ((double) (rxPackets - rxSuccess) * 0.5);
+        if (txSuccess <= txPackets && rxSuccess <= rxPackets) {
+            txSuccessRate = (txSuccessRate * 0.5)
+                    + ((double) (txPackets - txSuccess) * 0.5);
+            rxSuccessRate = (rxSuccessRate * 0.5)
+                    + ((double) (rxPackets - rxSuccess) * 0.5);
+        } else {
+            txBadRate = 0;
+            txRetriesRate = 0;
+        }
         txSuccess = txPackets;
         rxSuccess = rxPackets;
     }