Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

[firefly-linux-kernel-4.4.55.git] / drivers / acpi / acpica / rsutils.c

diff --git a/drivers/acpi/acpica/rsutils.c b/drivers/acpi/acpica/rsutils.c
index 4409db8209d75d800d4767495e4bd31beffc0825..433a375deb9350e9635b103e3c593d6e7c3838da 100644 (file)
--- a/drivers/acpi/acpica/rsutils.c
+++ b/drivers/acpi/acpica/rsutils.c
@@ -5,7 +5,7 @@
  ******************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2011, Intel Corp.
+ * Copyright (C) 2000 - 2012, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -592,6 +592,56 @@ acpi_rs_get_prs_method_data(struct acpi_namespace_node *node,
 }
 #endif                         /*  ACPI_FUTURE_USAGE  */
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_get_aei_method_data
+ *
+ * PARAMETERS:  Node            - Device node
+ *              ret_buffer      - Pointer to a buffer structure for the
+ *                                results
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to get the _AEI value of an object
+ *              contained in an object specified by the handle passed in
+ *
+ *              If the function fails an appropriate status will be returned
+ *              and the contents of the callers buffer is undefined.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_get_aei_method_data(struct acpi_namespace_node *node,
+                           struct acpi_buffer *ret_buffer)
+{
+       union acpi_operand_object *obj_desc;
+       acpi_status status;
+
+       ACPI_FUNCTION_TRACE(rs_get_aei_method_data);
+
+       /* Parameters guaranteed valid by caller */
+
+       /* Execute the method, no parameters */
+
+       status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI,
+                                        ACPI_BTYPE_BUFFER, &obj_desc);
+       if (ACPI_FAILURE(status)) {
+               return_ACPI_STATUS(status);
+       }
+
+       /*
+        * Make the call to create a resource linked list from the
+        * byte stream buffer that comes back from the _CRS method
+        * execution.
+        */
+       status = acpi_rs_create_resource_list(obj_desc, ret_buffer);
+
+       /* On exit, we must delete the object returned by evaluate_object */
+
+       acpi_ut_remove_reference(obj_desc);
+       return_ACPI_STATUS(status);
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_rs_get_method_data