diff -rdup linux-2.6.orig/drivers/acpi/power.c linux-2.6/drivers/acpi/power.c
--- linux-2.6.orig/drivers/acpi/power.c
+++ linux-2.6/drivers/acpi/power.c
@@ -242,6 +242,7 @@ static int acpi_power_off_device(acpi_ha
 	acpi_status status = AE_OK;
 	struct acpi_power_resource *resource = NULL;
 	struct list_head *node, *next;
+	struct acpi_power_reference *ref;
 
 	result = acpi_power_get_context(handle, &resource);
 	if (result)