ACPICA: Support for external package objects as method arguments

Implemented support to allow Package objects to be passed as
method arguments to the acpi_evaluate_object interface. Previously,
this would return an AE_NOT_IMPLEMENTED exception.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
index 4696124759e1..db0b9bac7945 100644
--- a/drivers/acpi/utilities/utobject.c
+++ b/drivers/acpi/utilities/utobject.c
@@ -146,6 +146,48 @@ union acpi_operand_object *acpi_ut_create_internal_object_dbg(char *module_name,
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_ut_create_package_object
+ *
+ * PARAMETERS:  Count               - Number of package elements
+ *
+ * RETURN:      Pointer to a new Package object, null on failure
+ *
+ * DESCRIPTION: Create a fully initialized package object
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *acpi_ut_create_package_object(u32 count)
+{
+        union acpi_operand_object *package_desc;
+        union acpi_operand_object **package_elements;
+
+        ACPI_FUNCTION_TRACE_U32(ut_create_package_object, count);
+
+        /* Create a new Package object */
+
+        package_desc = acpi_ut_create_internal_object(ACPI_TYPE_PACKAGE);
+        if (!package_desc) {
+                return_PTR(NULL);
+        }
+
+        /*
+         * Create the element array. Count+1 allows the array to be null
+         * terminated.
+         */
+        package_elements = ACPI_ALLOCATE_ZEROED((acpi_size)
+                                                (count + 1) * sizeof(void *));
+        if (!package_elements) {
+                ACPI_FREE(package_desc);
+                return_PTR(NULL);
+        }
+
+        package_desc->package.count = count;
+        package_desc->package.elements = package_elements;
+        return_PTR(package_desc);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_ut_create_buffer_object
  *
  * PARAMETERS:  buffer_size            - Size of buffer to be created