auto import from //branches/cupcake/...@127101
diff --git a/include/media/ToneGenerator.h b/include/media/ToneGenerator.h
index 0ddfb8e..0cfdeec 100644
--- a/include/media/ToneGenerator.h
+++ b/include/media/ToneGenerator.h
@@ -134,7 +134,7 @@
     Condition mWaitCbkCond; // condition enabling interface to wait for audio callback completion after a change is requested
     float mVolume;  // Volume applied to audio track
     int mStreamType; // Audio stream used for output
-    int mProcessSize;  // Size of audio blocks generated at a time by audioCallback() (in PCM frames).
+    unsigned int mProcessSize;  // Size of audio blocks generated at a time by audioCallback() (in PCM frames).
 
     bool initAudioTrack();
     static void audioCallback(int event, void* user, void *info);