ACPI_OSI_INVALID
#define ACPI_OSI_OPTIONAL_FEATURE (ACPI_OSI_FEATURE | ACPI_OSI_DEFAULT_INVALID | ACPI_OSI_INVALID)
if (!(next_interface->flags & ACPI_OSI_INVALID)) {
next_interface->flags |= ACPI_OSI_INVALID;
next_interface->flags &= ~ACPI_OSI_INVALID;
if (next_interface->flags & ACPI_OSI_INVALID) {
next_interface->flags |= ACPI_OSI_INVALID;
next_interface->flags |= ACPI_OSI_INVALID;
next_interface->flags &= ~ACPI_OSI_INVALID;
if (interface_info && !(interface_info->flags & ACPI_OSI_INVALID)) {
if (interface_info->flags & ACPI_OSI_INVALID) {
interface_info->flags &= ~ACPI_OSI_INVALID;