From 9e64155eb1b6ab78980db58cfd21385fa5f6b024 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Thu, 3 Sep 2009 10:21:03 +0800 Subject: 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 Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/nsinit.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers') 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, -- cgit v1.2.3