Disable data call in emergency call

telephony/java/com/android/internal/telephony/cdma/CDMAPhone.java

@@ -777,6 +777,9 @@ public class CDMAPhone extends PhoneBase {
             Intent intent = new Intent(TelephonyIntents.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS);
             ActivityManagerNative.broadcastStickyIntent(intent, null);
             return false;
+        } else if ((mCT.state == Phone.State.OFFHOOK) && mCT.isInEmergencyCall()) {
+            // Do not allow data call to be enabled when emergency call is going on
+            return false;
         } else {
             return mDataConnection.setDataEnabled(true);
         }

telephony/java/com/android/internal/telephony/cdma/CdmaCallTracker.java

@@ -80,6 +80,7 @@ public final class CdmaCallTracker extends CallTracker {
     int pendingCallClirMode;
     Phone.State state = Phone.State.IDLE;
 
+    private boolean mIsInEmergencyCall = false;
 
 //    boolean needsPoll;
 
@@ -210,6 +211,9 @@ public final class CdmaCallTracker extends CallTracker {
             // Always unmute when initiating a new call
             setMute(false);
 
+            // Check data call
+            disableDataCallInEmergencyCall(dialString);
+
             String inEcm=SystemProperties.get(TelephonyProperties.PROPERTY_INECM_MODE, "false");
             if(inEcm.equals("false")) {
                 cm.dial(pendingMO.address, clirMode, obtainCompleteMessage());
@@ -236,6 +240,9 @@ public final class CdmaCallTracker extends CallTracker {
     private Connection
     dialThreeWay (String dialString) {
         if (!foregroundCall.isIdle()) {
+            // Check data call
+            disableDataCallInEmergencyCall(dialString);
+
             // Attach the new connection to foregroundCall
             pendingMO = new CdmaConnection(phone.getContext(),
                                 dialString, this, foregroundCall);
@@ -529,6 +536,9 @@ public final class CdmaCallTracker extends CallTracker {
                     }
                 }
                 foregroundCall.setGeneric(false);
+
+                mIsInEmergencyCall = false;
+
                 // Dropped connections are removed from the CallTracker
                 // list but kept in the Call list
                 connections[i] = null;
@@ -967,6 +977,26 @@ public final class CdmaCallTracker extends CallTracker {
         }
     }
 
+    /**
+     * Disable data call when emergency call is connected
+     */
+    private void disableDataCallInEmergencyCall(String dialString) {
+        if (PhoneNumberUtils.isEmergencyNumber(dialString)) {
+            phone.disableDataConnectivity();
+            mIsInEmergencyCall = true;
+        }
+    }
+
+    /**
+     * Check if current call is in emergency call
+     *
+     * @return true if it is in emergency call
+     *         false if it is not in emergency call
+     */
+    boolean isInEmergencyCall() {
+        return mIsInEmergencyCall;
+    }
+
     protected void log(String msg) {
         Log.d(LOG_TAG, "[CdmaCallTracker] " + msg);
     }