From 91f79593a7f1a31c6fa7c7ae2e1c007aebf37dab Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Sat, 18 Jul 2009 17:57:38 +0000
Subject: [PATCH]  - Don't change the lock's OldIrql value until we actually
 have the lock because we need this value to unlock correctly  - This should
 fix bug 4704

svn path=/trunk/; revision=42054
---
 reactos/drivers/network/tcpip/recmutex/recmutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/drivers/network/tcpip/recmutex/recmutex.c b/reactos/drivers/network/tcpip/recmutex/recmutex.c
index f1a54a6cc21..72e889fbd77 100644
--- a/reactos/drivers/network/tcpip/recmutex/recmutex.c
+++ b/reactos/drivers/network/tcpip/recmutex/recmutex.c
@@ -34,7 +34,6 @@ SIZE_T RecursiveMutexEnter( PRECURSIVE_MUTEX RecMutex, BOOLEAN ToWrite ) {
 
     if( CurrentIrql <= APC_LEVEL ) {
         ExAcquireFastMutex( &RecMutex->Mutex );
-        RecMutex->OldIrql = CurrentIrql;
         while( RecMutex->Locked ) {
             ExReleaseFastMutex( &RecMutex->Mutex );
             Status = KeWaitForSingleObject( &RecMutex->StateLockedEvent,
@@ -44,6 +43,7 @@ SIZE_T RecursiveMutexEnter( PRECURSIVE_MUTEX RecMutex, BOOLEAN ToWrite ) {
                 NULL );
             ExAcquireFastMutex( &RecMutex->Mutex );
         }
+        RecMutex->OldIrql = CurrentIrql;
         RecMutex->Locked = TRUE;
         RecMutex->Writer = ToWrite;
         RecMutex->CurrentThread = CurrentThread;