acpica-unix2-20130823
PANKOVs restructure

@@ -3,11 +3,11 @@
  * Module Name: uteval - Object evaluation
  *
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2013, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:

@@ -93,11 +93,11 @@
     {
         return_ACPI_STATUS (AE_NO_MEMORY);
     }
 
     Info->PrefixNode = PrefixNode;
-    Info->Pathname = Path;
+    Info->RelativePathname = Path;
 
     /* Evaluate the object/method */
 
     Status = AcpiNsEvaluate (Info);
     if (ACPI_FAILURE (Status))

@@ -134,26 +134,31 @@
     /* Map the return object type to the bitmapped type */
 
     switch ((Info->ReturnObject)->Common.Type)
     {
     case ACPI_TYPE_INTEGER:
+
         ReturnBtype = ACPI_BTYPE_INTEGER;
         break;
 
     case ACPI_TYPE_BUFFER:
+
         ReturnBtype = ACPI_BTYPE_BUFFER;
         break;
 
     case ACPI_TYPE_STRING:
+
         ReturnBtype = ACPI_BTYPE_STRING;
         break;
 
     case ACPI_TYPE_PACKAGE:
+
         ReturnBtype = ACPI_BTYPE_PACKAGE;
         break;
 
     default:
+
         ReturnBtype = 0;
         break;
     }
 
     if ((AcpiGbl_EnableInterpreterSlack) &&

@@ -253,11 +258,12 @@
  *              Flags               - Where the status flags are returned
  *
  * RETURN:      Status
  *
  * DESCRIPTION: Executes _STA for selected device and stores results in
- *              *Flags.
+ *              *Flags. If _STA does not exist, then the device is assumed
+ *              to be present/functional/enabled (as per the ACPI spec).
  *
  *              NOTE: Internal function, no parameter validation
  *
  ******************************************************************************/
 

@@ -277,10 +283,15 @@
                 ACPI_BTYPE_INTEGER, &ObjDesc);
     if (ACPI_FAILURE (Status))
     {
         if (AE_NOT_FOUND == Status)
         {
+            /*
+             * if _STA does not exist, then (as per the ACPI specification),
+             * the returned flags will indicate that the device is present,
+             * functional, and enabled.
+             */
             ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
                 "_STA on %4.4s was not found, assuming device is present\n",
                 AcpiUtGetNodeName (DeviceNode)));
 
             *Flags = ACPI_UINT32_MAX;