illumos sync

1 files changed, 19 insertions, 3 deletions

diff --git a/usr/src/uts/intel/io/acpica/namespace/nsrepair2.c b/usr/src/uts/intel/io/acpica/namespace/nsrepair2.c
index 4c9c6d7825..a6a4d6874d 100644
--- a/usr/src/uts/intel/io/acpica/namespace/nsrepair2.c
+++ b/usr/src/uts/intel/io/acpica/namespace/nsrepair2.c
@@ -6,7 +6,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -516,11 +516,12 @@ AcpiNsRepair_HID (
     }
 
     /*
-     * Copy and uppercase the string. From the ACPI specification:
+     * Copy and uppercase the string. From the ACPI 5.0 specification:
      *
      * A valid PNP ID must be of the form "AAA####" where A is an uppercase
      * letter and # is a hex digit. A valid ACPI ID must be of the form
-     * "ACPI####" where # is a hex digit.
+     * "NNNN####" where N is an uppercase letter or decimal digit, and
+     * # is a hex digit.
      */
     for (Dest = NewString->String.Pointer; *Source; Dest++, Source++)
     {
@@ -555,8 +556,23 @@ AcpiNsRepair_TSS (
 {
     ACPI_OPERAND_OBJECT     *ReturnObject = *ReturnObjectPtr;
     ACPI_STATUS             Status;
+    ACPI_NAMESPACE_NODE     *Node;
 
 
+    /*
+     * We can only sort the _TSS return package if there is no _PSS in the
+     * same scope. This is because if _PSS is present, the ACPI specification
+     * dictates that the _TSS Power Dissipation field is to be ignored, and
+     * therefore some BIOSs leave garbage values in the _TSS Power field(s).
+     * In this case, it is best to just return the _TSS package as-is.
+     * (May, 2011)
+     */
+    Status = AcpiNsGetNode (Data->Node, "^_PSS", ACPI_NS_NO_UPSEARCH, &Node);
+    if (ACPI_SUCCESS (Status))
+    {
+        return (AE_OK);
+    }
+
     Status = AcpiNsCheckSortedList (Data, ReturnObject, 5, 1,
                 ACPI_SORT_DESCENDING, "PowerDissipation");