ACPICA: Fail AcpiEnable if ACPI tables not loaded.
AcpiEnable will now fail if all of the required ACPI tables are not
loaded (FADT, FACS, DSDT). BZ 477
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index a3d148e..4eab4f5 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -65,6 +65,14 @@
ACPI_FUNCTION_TRACE(acpi_enable);
+ /* ACPI tables must be present */
+
+ if (!acpi_tb_tables_loaded()) {
+ return_ACPI_STATUS(AE_NO_ACPI_TABLES);
+ }
+
+ /* Check current mode */
+
if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
"System is already in ACPI mode\n"));