diff -dwup3 -X excl.txt -r \dev\openib\ofw\gen1\branches\mlx4_30\trunk\hw\mlx4\kernel\bus\drv\pdo.c .\hw\mlx4\kernel\bus\drv\pdo.c
--- \dev\openib\ofw\gen1\branches\mlx4_30\trunk\hw\mlx4\kernel\bus\drv\pdo.c	Thu Mar 29 00:15:29 2012
+++ .\hw\mlx4\kernel\bus\drv\pdo.c	Wed Aug 15 20:07:01 2012
@@ -1,6 +1,7 @@
 #include "precomp.h"
 #include <initguid.h>
 #include <wdmguid.h>
+#include "iba\ibat_ifc.h"
 
 #include "workerThread.h"
 
@@ -750,16 +751,22 @@ Return Value:
 	//
 	// Expose also PCI.SYS interface for MLX4_HCA
 	//
-	WDF_QUERY_INTERFACE_CONFIG_INIT( &p_pdo->qiPciBus,
-		(PINTERFACE) &p_fdo->pci_dev.bus_pci_ifc,
-		&GUID_BUS_INTERFACE_STANDARD, NULL);
+	WDF_QUERY_INTERFACE_CONFIG_INIT( &qiConfig, NULL, &GUID_BUS_INTERFACE_STANDARD, NULL);
+    qiConfig.SendQueryToParentStack = TRUE;
 
 	// TODO: Soft Reset - how tobar getting interface during RESET_IN_PROGRESS
 	// maybe - using EvtDeviceProcessQueryInterfaceRequest
-	status = WdfDeviceAddQueryInterface( hChild, &p_pdo->qiPciBus );
+	status = WdfDeviceAddQueryInterface( hChild, &qiConfig );
 	if (!NT_SUCCESS(status))
 		goto Cleanup;
 
+    WDF_QUERY_INTERFACE_CONFIG_INIT( &qiConfig, NULL, &GUID_IBAT_INTERFACE, NULL );
+    qiConfig.SendQueryToParentStack = TRUE;
+
+    status = WdfDeviceAddQueryInterface( hChild, &qiConfig );
+    if (!NT_SUCCESS(status)) {
+        goto Cleanup;
+    }
 
 	//
 	// Create a custom interface so that other drivers can