Index: storage/ide/uniata/id_dma.cpp
===================================================================
--- drivers/storage/ide/uniata/id_dma.cpp	(revision 73395)
+++ drivers/storage/ide/uniata/id_dma.cpp	(working copy)
@@ -107,6 +107,7 @@
     PHYSICAL_ADDRESS ph_addr;
     ULONG addr;
 
+    *(volatile char *)data;
     ph_addr = MmGetPhysicalAddress(data);
     KdPrint3((PRINT_PREFIX "AtapiVirtToPhysAddr_: %x -> %8.8x:%8.8x\n", data, ph_addr.HighPart, ph_addr.LowPart));
     if(!ph_addru && ph_addr.HighPart) {