Add a little more DPRINTs, they will save some debuggin-time (silent quitting in case of error isn't a good thing to do).

Modified: trunk/reactos/ntoskrnl/io/pnpmgr.c

--- trunk/reactos/ntoskrnl/io/pnpmgr.c	2005-12-08 01:54:43 UTC (rev 19961)
+++ trunk/reactos/ntoskrnl/io/pnpmgr.c	2005-12-08 09:51:24 UTC (rev 19962)
@@ -449,6 +449,8 @@

    PDEVICE_NODE DeviceNode = NULL;
    NTSTATUS Status;
 

+   DPRINT("IoOpenDeviceRegistryKey() called\n");
+

    if ((DevInstKeyType & (PLUGPLAY_REGKEY_DEVICE | PLUGPLAY_REGKEY_DRIVER)) == 0)
       return STATUS_INVALID_PARAMETER;
 
@@ -539,7 +541,10 @@

     */
 
    if ((DevInstKeyType & PLUGPLAY_REGKEY_DRIVER) || !NT_SUCCESS(Status))

+   {
+      DPRINT1("IoOpenDeviceRegistryKey(): Base key doesn't exist, exiting...\n");

       return Status;

+   }

 
    /*
     * Let's go further. For device key we must open "Device Parameters"