ARM64_BUS_ACPI
if (arm64_bus_method != ARM64_BUS_ACPI)
arm64_bus_method = ARM64_BUS_ACPI;
arm64_bus_method = ARM64_BUS_ACPI;
case ARM64_BUS_ACPI:
case ARM64_BUS_ACPI:
if (arm64_bus_method != ARM64_BUS_ACPI || acpi_identify() != 0)
#define USE_ACPI (arm64_bus_method == ARM64_BUS_ACPI)