[navaraf] 20015: Do not revoke the display ownership until the bootvid thread is terminated.

Do not revoke the display ownership until the bootvid thread is
terminated.
Modified: trunk/reactos/drivers/dd/bootvid/bootvid.c
  _____  

Modified: trunk/reactos/drivers/dd/bootvid/bootvid.c
--- trunk/reactos/drivers/dd/bootvid/bootvid.c	2005-12-09 18:42:27 UTC
(rev 20014)
+++ trunk/reactos/drivers/dd/bootvid/bootvid.c	2005-12-09 19:00:13 UTC
(rev 20015)
@@ -45,7 +45,7 @@

  *   Set to Write Mode 2 and Read Mode 0.
  */
 
-static VGA_REGISTERS Mode12Regs =
+static const VGA_REGISTERS Mode12Regs =
 {
    /* CRT Controller Registers */
    {0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0x0B, 0x3E, 0x00, 0x40, 0x00,
0x00,
@@ -69,6 +69,9 @@
 static CLIENT_ID BitmapThreadId;
 static PUCHAR BootimageBitmap;
 
+static ULONG ShutdownNotify;
+static KEVENT ShutdownCompleteEvent;
+
 /* DATA
**********************************************************************/
 
 static PDRIVER_OBJECT BootVidDriverObject = NULL;
@@ -156,7 +159,7 @@
 
 
 STATIC VOID FASTCALL
-vgaSetRegisters(PVGA_REGISTERS Registers)
+vgaSetRegisters(const VGA_REGISTERS *Registers)
 {
    UINT i;
 
@@ -237,6 +240,9 @@
 VidCleanUp(VOID)
 {
    InbvUnmapVideoMemory();
+   InterlockedIncrement(&ShutdownNotify);
+   KeWaitForSingleObject(&ShutdownCompleteEvent, Executive, KernelMode,
+                         FALSE, NULL);
 }
 
 
@@ -495,7 +501,7 @@
       FaderPaletteDelta[i].b = ((Palette[i].rgbBlue << 8) /
PALETTE_FADE_STEPS);
    }
 
-   for (i = 0; i < PALETTE_FADE_STEPS; i++)
+   for (i = 0; i < PALETTE_FADE_STEPS && !ShutdownNotify; i++)
    {
       /* Disable screen and enable palette access. */
       READ_PORT_UCHAR(STATUS);
@@ -548,6 +554,7 @@
    {
       DbgPrint("Warning: Cannot find boot image\n");
    }
+   KeSetEvent(&ShutdownCompleteEvent, 0, FALSE);
 }
 
 
@@ -639,6 +646,9 @@
 
    BootVidDriverObject = DriverObject;
 
+   ShutdownNotify = 0;
+   KeInitializeEvent(&ShutdownCompleteEvent, NotificationEvent, FALSE);
+
    /* Register driver routines */
    DriverObject->MajorFunction[IRP_MJ_CLOSE] = VidDispatch;
    DriverObject->MajorFunction[IRP_MJ_CREATE] = VidDispatch;