[VIDEOPRT]

[reactos.git] / reactos / win32ss / drivers / videoprt / videoprt.c

diff --git a/reactos/win32ss/drivers/videoprt/videoprt.c b/reactos/win32ss/drivers/videoprt/videoprt.c
index 2c0cbee..9bfb2a2 100644 (file)
--- a/reactos/win32ss/drivers/videoprt/videoprt.c
+++ b/reactos/win32ss/drivers/videoprt/videoprt.c
@@ -33,6 +33,7 @@
 ULONG CsrssInitialized = FALSE;
 PKPROCESS Csrss = NULL;
 ULONG VideoPortDeviceNumber = 0;
+KMUTEX VideoPortInt10Mutex;
 
 /* PRIVATE FUNCTIONS **********************************************************/
 
@@ -464,9 +465,16 @@ VideoPortInitialize(
     NTSTATUS Status;
     PVIDEO_PORT_DRIVER_EXTENSION DriverExtension;
     BOOLEAN PnpDriver = FALSE, LegacyDetection = FALSE;
+    static BOOLEAN Int10MutexInitialized;
 
     TRACE_(VIDEOPRT, "VideoPortInitialize\n");
 
+    if (!Int10MutexInitialized)
+    {
+        KeInitializeMutex(&VideoPortInt10Mutex, 0);
+        Int10MutexInitialized = TRUE;
+    }
+
     /* As a first thing do parameter checks. */
     if (HwInitializationData->HwInitDataSize > sizeof(VIDEO_HW_INITIALIZATION_DATA))
     {