diff --git a/core/java/android/bluetooth/BluetoothGatt.java b/core/java/android/bluetooth/BluetoothGatt.java
index 78248ef..d8a7834 100644
--- a/core/java/android/bluetooth/BluetoothGatt.java
+++ b/core/java/android/bluetooth/BluetoothGatt.java
@@ -56,6 +56,7 @@
     private int mAuthRetryState;
     private int mConnState;
     private final Object mStateLock = new Object();
+    private final Object mDeviceBusyLock = new Object();
     @UnsupportedAppUsage
     private Boolean mDeviceBusy = false;
     @UnsupportedAppUsage
@@ -281,7 +282,7 @@
                         }
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
                 }
@@ -356,7 +357,7 @@
                         return;
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
 
@@ -412,7 +413,7 @@
                         return;
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
 
@@ -495,7 +496,7 @@
                         return;
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
 
@@ -546,7 +547,7 @@
                         return;
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
 
@@ -595,7 +596,7 @@
                         return;
                     }
 
-                    synchronized (mDeviceBusy) {
+                    synchronized (mDeviceBusyLock) {
                         mDeviceBusy = false;
                     }
 
@@ -1097,7 +1098,7 @@
         BluetoothDevice device = service.getDevice();
         if (device == null) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }
@@ -1131,7 +1132,7 @@
         if (VDBG) Log.d(TAG, "readUsingCharacteristicUuid() - uuid: " + uuid);
         if (mService == null || mClientIf == 0) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }
@@ -1177,7 +1178,7 @@
         BluetoothDevice device = service.getDevice();
         if (device == null) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }
@@ -1220,7 +1221,7 @@
         BluetoothDevice device = service.getDevice();
         if (device == null) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }
@@ -1261,7 +1262,7 @@
         BluetoothDevice device = service.getDevice();
         if (device == null) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }
@@ -1329,7 +1330,7 @@
         if (VDBG) Log.d(TAG, "executeReliableWrite() - device: " + mDevice.getAddress());
         if (mService == null || mClientIf == 0) return false;
 
-        synchronized (mDeviceBusy) {
+        synchronized (mDeviceBusyLock) {
             if (mDeviceBusy) return false;
             mDeviceBusy = true;
         }