ACPICA: Fixes for Unload and DDBHandles

Implemented support for the use of DDBHandles as an Indexed
Reference, as per the ACPI spec.

http://www.acpica.org/bugzilla/show_bug.cgi?id=486.

Implemented support for UserTerm (Method invocation) for the Unload operator
as per the ACPI spec.

http://www.acpica.org/bugzilla/show_bug.cgi?id=580

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c
index 9c3cdf61dc34..5b5b2ff45ea2 100644
--- a/drivers/acpi/executer/exresolv.c
+++ b/drivers/acpi/executer/exresolv.c
@@ -382,10 +382,10 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
         }
 
         /*
-         * For reference objects created via the ref_of or Index operators,
-         * we need to get to the base object (as per the ACPI specification
-         * of the object_type and size_of operators). This means traversing
-         * the list of possibly many nested references.
+         * For reference objects created via the ref_of, Index, or Load/load_table
+         * operators, we need to get to the base object (as per the ACPI
+         * specification of the object_type and size_of operators). This means
+         * traversing the list of possibly many nested references.
          */
         while (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
                 switch (obj_desc->reference.opcode) {
@@ -455,6 +455,11 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
                         }
                         break;
 
+                case AML_LOAD_OP:
+
+                        type = ACPI_TYPE_DDB_HANDLE;
+                        goto exit;
+
                 case AML_LOCAL_OP:
                 case AML_ARG_OP: