From cdfdfa0b8b19587c17a7b25b6e74b058c7758738 Mon Sep 17 00:00:00 2001
From: Alex Ionescu <aionescu@gmail.com>
Date: Tue, 26 Jul 2005 15:15:18 +0000
Subject: [PATCH] - Allow file debug prints to happen at IRQL > DISPATCH_LEVEL,
 but don't queue a work item until we are at <= DISPATCH. Fixes
 /DEBUGPORT=FILE freeze/crash/bug.

svn path=/trunk/; revision=16745
---
 reactos/ntoskrnl/kd/kdio.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/reactos/ntoskrnl/kd/kdio.c b/reactos/ntoskrnl/kd/kdio.c
index e463282ce51..deecf6ad95c 100644
--- a/reactos/ntoskrnl/kd/kdio.c
+++ b/reactos/ntoskrnl/kd/kdio.c
@@ -71,9 +71,17 @@ KdpPrintToLog(PCH String)
     /* Make sure we are initialized and can queue */
     if (!KdpLogInitialized || (ItemQueued)) return;
 
-    /* Queue the work item */
-    ExQueueWorkItem(&KdpDebugLogQueue, HyperCriticalWorkQueue);
-    ItemQueued = TRUE;
+    /* 
+     * Queue the work item 
+     * Note that we don't want to queue if we are > DISPATCH_LEVEL...
+     * The message is in the buffer and will simply be taken care of at
+     * the next time we are at <= DISPATCH, so it won't be lost.
+     */
+    if (KeGetCurrentIrql() <= DISPATCH_LEVEL)
+    {
+        ExQueueWorkItem(&KdpDebugLogQueue, HyperCriticalWorkQueue);
+        ItemQueued = TRUE;
+    }
 }
 
 VOID