ACPI_AML_OPENED
#define ACPI_AML_OPEN (ACPI_AML_OPENED | ACPI_AML_CLOSED)
if (!(acpi_aml_io.flags & ACPI_AML_OPENED)) {
acpi_aml_io.flags |= ACPI_AML_OPENED;
acpi_aml_io.flags &= ~ACPI_AML_OPENED;
if (!(acpi_aml_io.flags & ACPI_AML_OPENED) ||