Index: /trunk/src/VBox/Devices/Audio/DevHDA.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DevHDA.cpp	(revision 85898)
+++ /trunk/src/VBox/Devices/Audio/DevHDA.cpp	(revision 85899)
@@ -1111,5 +1111,9 @@
         {
             RT_ZERO(pThis->au32CorbBuf);
+#ifndef IN_RING3 /** @todo r=aeichner Why is this necessary at all? Can't see anything which would require this. */
             return VINF_IOM_R3_MMIO_WRITE;
+#else
+            return VINF_SUCCESS;
+#endif
         }