From c477153292b11752b4a9df5ee9ad6ef693e1bc36 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Wed, 17 Aug 2011 23:56:40 +0000
Subject: [PATCH] [NTOSKRNL] - Prevent duplicate processing of device objects
 when bus relations are invalidated multiple times for the bus PDO

svn path=/trunk/; revision=53289
---
 reactos/ntoskrnl/io/pnpmgr/pnpmgr.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
index 2d1ec969313..6f23b1f58a9 100644
--- a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
+++ b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
@@ -1392,6 +1392,13 @@ IopActionInterrogateDeviceStack(PDEVICE_NODE DeviceNode,
       return STATUS_UNSUCCESSFUL;
    }
 
+   /* Skip processing if it was already completed before */
+   if (DeviceNode->Flags & DNF_PROCESSED)
+   {
+       /* Nothing to do */
+       return STATUS_SUCCESS;
+   }
+
    /* Get Locale ID */
    Status = ZwQueryDefaultLocale(FALSE, &LocaleId);
    if (!NT_SUCCESS(Status))
@@ -1988,7 +1995,7 @@ IopActionConfigureChildServices(PDEVICE_NODE DeviceNode,
       return STATUS_UNSUCCESSFUL;
    }
 
-   if (!IopDeviceNodeHasFlag(DeviceNode, DNF_DISABLED))
+   if (!(DeviceNode->Flags & (DNF_DISABLED | DNF_STARTED | DNF_ADDED)))
    {
       WCHAR RegKeyBuffer[MAX_PATH];
       UNICODE_STRING RegKey;