commit bc7a36ab74e09da7bb63e2477b0740ac992b290e
author Lin Ming <ming.m.lin@intel.com> Thu Apr 10 19:06:42 2008 +0400
committer Len Brown <len.brown@intel.com> Tue Apr 22 14:29:30 2008 -0400
tree f9384f3f0909e1da6f12fb55643de8de594551dd
parent a6f4a4511e65942b93ded60d746094ec0e58ed8e

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>

drivers/acpi/executer/exstore.c

diff --git a/drivers/acpi/executer/exstore.c b/drivers/acpi/executer/exstore.c
index 2408122..725614e 100644
--- a/drivers/acpi/executer/exstore.c
+++ b/drivers/acpi/executer/exstore.c
@@ -434,11 +434,24 @@
 		 */
 		obj_desc = *(index_desc->reference.where);
 
-		status =
-		    acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc,
-						    walk_state);
-		if (ACPI_FAILURE(status)) {
-			return_ACPI_STATUS(status);
+		if (ACPI_GET_OBJECT_TYPE(source_desc) ==
+		    ACPI_TYPE_LOCAL_REFERENCE
+		    && source_desc->reference.opcode == AML_LOAD_OP) {
+
+			/* This is a DDBHandle, just add a reference to it */
+
+			acpi_ut_add_reference(source_desc);
+			new_desc = source_desc;
+		} else {
+			/* Normal object, copy it */
+
+			status =
+			    acpi_ut_copy_iobject_to_iobject(source_desc,
+							    &new_desc,
+							    walk_state);
+			if (ACPI_FAILURE(status)) {
+				return_ACPI_STATUS(status);
+			}
 		}
 
 		if (obj_desc) {