[cgutman] 48581: [NTOSKRNL] - Don't overwrite the ACPI hardware key on every boot

Author: cgutman
Date: Sat Aug 21 21:39:53 2010
New Revision: 48581

URL: http://svn.reactos.org/svn/reactos?rev=48581&view=rev
Log:
[NTOSKRNL]
- Don't overwrite the ACPI hardware key on every boot

Modified:
    trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c

Modified: trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c...
==============================================================================
--- trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c [iso-8859-1] Sat Aug 21 21:39:53 2010
@@ -2621,6 +2621,7 @@
    OBJECT_ATTRIBUTES ObjectAttributes;
    HANDLE hEnum, hRoot, hHalAcpiDevice, hHalAcpiId, hLogConf;
    NTSTATUS Status;
+   ULONG Disposition;

InitializeObjectAttributes(&ObjectAttributes, &EnumU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);
    Status = ZwCreateKey(&hEnum, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
@@ -2642,27 +2643,32 @@
    if (IopIsAcpiComputer())
    {
       InitializeObjectAttributes(&ObjectAttributes, &HalAcpiDevice, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hRoot, NULL);
-      Status = ZwCreateKey(&hHalAcpiDevice, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
+      Status = ZwCreateKey(&hHalAcpiDevice, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, &Disposition);
       ZwClose(hRoot);
       if (!NT_SUCCESS(Status))
          return Status;
-      InitializeObjectAttributes(&ObjectAttributes, &HalAcpiId, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hHalAcpiDevice, NULL);
-      Status = ZwCreateKey(&hHalAcpiId, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
+      if (Disposition == REG_CREATED_NEW_KEY)
+      {
+          InitializeObjectAttributes(&ObjectAttributes, &HalAcpiId, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hHalAcpiDevice, NULL);
+          Status = ZwCreateKey(&hHalAcpiId, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
+          ZwClose(hHalAcpiDevice);
+          if (!NT_SUCCESS(Status))
+              return Status;
+          Status = ZwSetValueKey(hHalAcpiId, &DeviceDescU, 0, REG_SZ, HalAcpiDeviceDesc.Buffer, HalAcpiDeviceDesc.MaximumLength);
+          if (NT_SUCCESS(Status))
+              Status = ZwSetValueKey(hHalAcpiId, &HardwareIDU, 0, REG_MULTI_SZ, HalAcpiHardwareID.Buffer, HalAcpiHardwareID.MaximumLength);
+          if (NT_SUCCESS(Status))
+          {
+              InitializeObjectAttributes(&ObjectAttributes, &LogConfU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hHalAcpiId, NULL);
+              Status = ZwCreateKey(&hLogConf, 0, &ObjectAttributes, 0, NULL, REG_OPTION_VOLATILE, NULL);
+              if (NT_SUCCESS(Status))
+                  ZwClose(hLogConf);
+          }
+          ZwClose(hHalAcpiId);
+          return Status;
+      }
       ZwClose(hHalAcpiDevice);
-      if (!NT_SUCCESS(Status))
-         return Status;
-      Status = ZwSetValueKey(hHalAcpiId, &DeviceDescU, 0, REG_SZ, HalAcpiDeviceDesc.Buffer, HalAcpiDeviceDesc.MaximumLength);
-      if (NT_SUCCESS(Status))
-         Status = ZwSetValueKey(hHalAcpiId, &HardwareIDU, 0, REG_MULTI_SZ, HalAcpiHardwareID.Buffer, HalAcpiHardwareID.MaximumLength);
-      if (NT_SUCCESS(Status))
-      {
-          InitializeObjectAttributes(&ObjectAttributes, &LogConfU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hHalAcpiId, NULL);
-          Status = ZwCreateKey(&hLogConf, 0, &ObjectAttributes, 0, NULL, REG_OPTION_VOLATILE, NULL);
-          if (NT_SUCCESS(Status))
-              ZwClose(hLogConf);
-      }
-      ZwClose(hHalAcpiId);
-      return Status;
+      return STATUS_SUCCESS;
    }
    else
    {