acpi_dsd_bool
ACPI_STATUS acpi_dsd_bool(ACPI_HANDLE, const char *, bool *);
acpi_dsd_bool(handle, "non-removable", &bval);
acpi_dsd_bool(handle, "broken-cd", &bval);
rv = acpi_dsd_bool(aa->aa_node->ad_handle, "non-removable",