Update comments

Change-Id: I37d3c4ce22b74fe8581a886fe5a7f9fef8266dad
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 31a14f0..397366b 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -94,6 +94,8 @@
                                 sp<IMemory>& buffers,   // return value 0 means it follows cblk
                                 status_t *status) = 0;
 
+    // FIXME Surprisingly, sampleRate/format/frameCount/latency don't work for input handles
+
     /* query the audio hardware state. This state never changes,
      * and therefore can be cached.
      */