ACPICA: fix for object premature deletion

Fix for object premature deletion after CopyObject
on Operation Region (BZ 350)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
index 5e1a80d1bc36..5c38276a3fd6 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/utilities/utcopy.c
@@ -719,6 +719,15 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
                 acpi_ut_add_reference(source_desc->reference.object);
                 break;
 
+        case ACPI_TYPE_REGION:
+                /*
+                 * We copied the Region Handler, so we now must add a reference
+                 */
+                if (dest_desc->region.handler) {
+                        acpi_ut_add_reference(dest_desc->region.handler);
+                }
+                break;
+
         default:
                 /* Nothing to do for other simple objects */
                 break;