[VIDEOPRT]

[reactos.git] / reactos / win32ss / drivers / videoprt / int10.c

diff --git a/reactos/win32ss/drivers/videoprt/int10.c b/reactos/win32ss/drivers/videoprt/int10.c
index 14ed492..0893db7 100644 (file)
--- a/reactos/win32ss/drivers/videoprt/int10.c
+++ b/reactos/win32ss/drivers/videoprt/int10.c
@@ -296,7 +296,9 @@ IntInt10CallBios(
     BiosContext.SegEs = BiosArguments->SegEs;
 
     /* Do the ROM BIOS call */
+    (void)KeWaitForMutexObject(&VideoPortInt10Mutex, Executive, KernelMode, FALSE, NULL);
     Status = Ke386CallBios(0x10, &BiosContext);
+    KeReleaseMutex(&VideoPortInt10Mutex, FALSE);
 
     /* Return the arguments */
     BiosArguments->Eax = BiosContext.Eax;
@@ -354,7 +356,9 @@ VideoPortInt10(
     BiosContext.Ebp = BiosArguments->Ebp;
 
     /* Do the ROM BIOS call */
+    (void)KeWaitForMutexObject(&VideoPortInt10Mutex, Executive, KernelMode, FALSE, NULL);
     Status = Ke386CallBios(0x10, &BiosContext);
+    KeReleaseMutex(&VideoPortInt10Mutex, FALSE);
 
     /* Return the arguments */
     BiosArguments->Eax = BiosContext.Eax;