1 files changed, 25 insertions, 2 deletions
diff --git a/sys/contrib/dev/acpica/components/disassembler/dmwalk.c b/sys/contrib/dev/acpica/components/disassembler/dmwalk.c
index f0d65b6..67a7965 100644
--- a/sys/contrib/dev/acpica/components/disassembler/dmwalk.c
+++ b/sys/contrib/dev/acpica/components/disassembler/dmwalk.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2012, Intel Corp.
+ * Copyright (C) 2000 - 2013, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -441,7 +441,30 @@ AcpiDmDescendingOp (
              * This is a first-level element of a term list,
              * indent a new line
              */
-            AcpiDmIndent (Level);
+            switch (Op->Common.AmlOpcode)
+            {
+            case AML_NOOP_OP:
+                /*
+                 * Optionally just ignore this opcode. Some tables use
+                 * NoOp opcodes for "padding" out packages that the BIOS
+                 * changes dynamically. This can leave hundreds or
+                 * thousands of NoOp opcodes that if disassembled,
+                 * cannot be compiled because they are syntactically
+                 * incorrect.
+                 */
+                if (AcpiGbl_IgnoreNoopOperator)
+                {
+                    Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
+                    return (AE_OK);
+                }
+
+                /* Fallthrough */
+
+            default:
+                AcpiDmIndent (Level);
+                break;
+            }
+
             Info->LastLevel = Level;
             Info->Count = 0;
     }