OvmfPkg/README: Update required QEMU & OS boot status

[mirror_edk2.git] / PcAtChipsetPkg / 8259InterruptControllerDxe / 8259.c

diff --git a/PcAtChipsetPkg/8259InterruptControllerDxe/8259.c b/PcAtChipsetPkg/8259InterruptControllerDxe/8259.c
index 5a862d13b8021d823b59c48ecafbf4e90ab4bb77..e73a1007a2df69483f35b596d6f4ec9dc8f2e9f0 100644 (file)
--- a/PcAtChipsetPkg/8259InterruptControllerDxe/8259.c
+++ b/PcAtChipsetPkg/8259InterruptControllerDxe/8259.c
@@ -1,7 +1,7 @@
 /** @file\r
   This contains the installation function for the driver.\r
 \r
-Copyright (c) 2005 - 2011, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2005 - 2012, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -123,8 +123,10 @@ Interrupt8259SetVectorBase (
   IN UINT8                     SlaveBase\r
   )\r
 {\r
-  UINT8 Mask;\r
+  UINT8   Mask;\r
+  EFI_TPL OriginalTpl;\r
 \r
+  OriginalTpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);\r
   //\r
   // Set vector base for slave PIC\r
   //\r
@@ -211,6 +213,8 @@ Interrupt8259SetVectorBase (
 \r
   IoWrite8 (LEGACY_8259_CONTROL_REGISTER_SLAVE, LEGACY_8259_EOI);\r
   IoWrite8 (LEGACY_8259_CONTROL_REGISTER_MASTER, LEGACY_8259_EOI);\r
+  \r
+  gBS->RestoreTPL (OriginalTpl);\r
 \r
   return EFI_SUCCESS;\r
 }\r
@@ -413,7 +417,7 @@ Interrupt8259GetVector (
   OUT UINT8                     *Vector\r
   )\r
 {\r
-  if (Irq < Efi8259Irq0 || Irq > Efi8259Irq15) {\r
+  if ((UINT32)Irq > Efi8259Irq15) {\r
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
@@ -445,7 +449,7 @@ Interrupt8259EnableIrq (
   IN BOOLEAN                   LevelTriggered\r
   )\r
 {\r
-  if (Irq < Efi8259Irq0 || Irq > Efi8259Irq15) {\r
+  if ((UINT32)Irq > Efi8259Irq15) {\r
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
@@ -478,7 +482,7 @@ Interrupt8259DisableIrq (
   IN EFI_8259_IRQ              Irq\r
   )\r
 {\r
-  if (Irq < Efi8259Irq0 || Irq > Efi8259Irq15) {\r
+  if ((UINT32)Irq > Efi8259Irq15) {\r
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r
@@ -555,7 +559,7 @@ Interrupt8259EndOfInterrupt (
   IN EFI_8259_IRQ              Irq\r
   )\r
 {\r
-  if (Irq < Efi8259Irq0 || Irq > Efi8259Irq15) {\r
+  if ((UINT32)Irq > Efi8259Irq15) {\r
     return EFI_INVALID_PARAMETER;\r
   }\r
 \r