acpica_init
if (ACPI_FAILURE(acpica_init())) {
if (acpica_init() != AE_OK) {
if (acpica_init() == 0) {
if (acpica_init() != AE_OK)
if (acpica_init() != AE_OK)
if (acpica_init() != AE_OK) {
extern int acpica_init(void);