Fix mms pdp activation issue

RefCount on apncontext will be decremented even though
it is not set if there is a release request while doing
PS attach on a sub. With negative refCount value, the
next pdp activation on same apncontext will be ignored.

Change-Id: If01d182f5072140be842add13784d7d51078687a

1 files changed, 3 insertions, 1 deletions

diff --git a/src/java/com/android/internal/telephony/dataconnection/ApnContext.java b/src/java/com/android/internal/telephony/dataconnection/ApnContext.java
index 3d8b0226c..4a14e61df 100644
--- a/src/java/com/android/internal/telephony/dataconnection/ApnContext.java
+++ b/src/java/com/android/internal/telephony/dataconnection/ApnContext.java
@@ -256,8 +256,10 @@ public class ApnContext {
 
     public void decRefCount() {
         synchronized (mRefCountLock) {
-            if (mRefCount-- == 1) {
+            if ((mRefCount > 0) && (mRefCount-- == 1)) {
                 mDcTracker.setEnabled(mDcTracker.apnTypeToId(mApnType), false);
+            } else {
+                log("Ignoring defCount request as mRefCount is: " + mRefCount);
             }
         }
     }