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authorBob Moore <robert.moore@intel.com>2009-09-03 10:21:03 +0800
committerLen Brown <len.brown@intel.com>2009-09-08 22:28:34 -0400
commit9e64155eb1b6ab78980db58cfd21385fa5f6b024 (patch)
tree2484d66814599527789f59b56533428fac42c5fc
parenteb752552464dbb7a99f8a975ec3b9355893cedd4 (diff)
ACPICA: Windows compatibility: autoexecute root _INI method
Add support for execution of an _INI method at the namespace root. Although not defined in the ACPI specification, this support was added to Windows around the Vista timeframe. It is added here for Windows compatibility. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/acpica/nsinit.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index 2adfcf329e1..1d5b360eb25 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -170,6 +170,21 @@ acpi_status acpi_ns_initialize_devices(void)
goto error_exit;
}
+ /*
+ * Execute the "global" _INI method that may appear at the root. This
+ * support is provided for Windows compatibility (Vista+) and is not
+ * part of the ACPI specification.
+ */
+ info.evaluate_info->prefix_node = acpi_gbl_root_node;
+ info.evaluate_info->pathname = METHOD_NAME__INI;
+ info.evaluate_info->parameters = NULL;
+ info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;
+
+ status = acpi_ns_evaluate(info.evaluate_info);
+ if (ACPI_SUCCESS(status)) {
+ info.num_INI++;
+ }
+
/* Walk namespace to execute all _INIs on present devices */
status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,