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path: root/drivers/acpi/acpica/evxfregn.c
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-rw-r--r--drivers/acpi/acpica/evxfregn.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c
index 3197e6303c..624361a5f3 100644
--- a/drivers/acpi/acpica/evxfregn.c
+++ b/drivers/acpi/acpica/evxfregn.c
@@ -306,3 +306,57 @@ acpi_execute_reg_methods(acpi_handle device, acpi_adr_space_type space_id)
}
ACPI_EXPORT_SYMBOL(acpi_execute_reg_methods)
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_execute_orphan_reg_method
+ *
+ * PARAMETERS: device - Handle for the device
+ * space_id - The address space ID
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Execute an "orphan" _REG method that appears under an ACPI
+ * device. This is a _REG method that has no corresponding region
+ * within the device's scope.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_execute_orphan_reg_method(acpi_handle device, acpi_adr_space_type space_id)
+{
+ struct acpi_namespace_node *node;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE(acpi_execute_orphan_reg_method);
+
+ /* Parameter validation */
+
+ if (!device) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Convert and validate the device handle */
+
+ node = acpi_ns_validate_handle(device);
+ if (node) {
+
+ /*
+ * If an "orphan" _REG method is present in the device's scope
+ * for the given address space ID, run it.
+ */
+
+ acpi_ev_execute_orphan_reg_method(node, space_id);
+ } else {
+ status = AE_BAD_PARAMETER;
+ }
+
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_execute_orphan_reg_method)