diff --git a/include/media/audiohal/StreamHalInterface.h b/include/media/audiohal/StreamHalInterface.h
index 5296829..7419c34 100644
--- a/include/media/audiohal/StreamHalInterface.h
+++ b/include/media/audiohal/StreamHalInterface.h
@@ -75,6 +75,10 @@
     // Get current read/write position in the mmap buffer
     virtual status_t getMmapPosition(struct audio_mmap_position *position) = 0;
 
+    // Set the priority of the thread that interacts with the HAL
+    // (must match the priority of the audioflinger's thread that calls 'read' / 'write')
+    virtual status_t setHalThreadPriority(int priority) = 0;
+
   protected:
     // Subclasses can not be constructed directly by clients.
     StreamHalInterface() {}