From 4173674a62103d401b8befd43d7a6ee08ce782bd Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Mon, 13 Oct 2014 18:31:55 +0000
Subject: [PATCH] [SETUPAPI] Load a property sheet extension dll only once,
 otherwise we might leak module handles.

svn path=/trunk/; revision=64734
---
 reactos/dll/win32/setupapi/devclass.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/reactos/dll/win32/setupapi/devclass.c b/reactos/dll/win32/setupapi/devclass.c
index 2bdd6e91d9e..60c92fe8fc1 100644
--- a/reactos/dll/win32/setupapi/devclass.c
+++ b/reactos/dll/win32/setupapi/devclass.c
@@ -1272,14 +1272,22 @@ SetupDiGetClassDevPropertySheetsW(
         if (DeviceInfoData)
         {
             struct DeviceInfo *devInfo = (struct DeviceInfo *)DeviceInfoData->Reserved;
-            devInfo->hmodDevicePropPageProvider = hModule;
-            devInfo->pDevicePropPageProvider = pPropPageProvider;
+
+            if (devInfo->hmodDevicePropPageProvider == NULL)
+            {
+                devInfo->hmodDevicePropPageProvider = hModule;
+                devInfo->pDevicePropPageProvider = pPropPageProvider;
+            }
         }
         else
         {
             struct DeviceInfoSet *devInfoSet = (struct DeviceInfoSet *)DeviceInfoSet;
-            devInfoSet->hmodClassPropPageProvider = hModule;
-            devInfoSet->pClassPropPageProvider = pPropPageProvider;
+
+            if (devInfoSet->hmodClassPropPageProvider == NULL)
+            {
+                devInfoSet->hmodClassPropPageProvider = hModule;
+                devInfoSet->pClassPropPageProvider = pPropPageProvider;
+            }
         }
 
         InitialNumberOfPages = PropertySheetHeader->nPages;