apei_exec_run_optional
rc = apei_exec_run_optional(&ctx, ACPI_EINJ_BEGIN_OPERATION);
rc = apei_exec_run_optional(&ctx, ACPI_EINJ_END_OPERATION);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_BEGIN_WRITE);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_END);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_BEGIN_READ);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_END);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_BEGIN_CLEAR);
rc = apei_exec_run_optional(&ctx, ACPI_ERST_END);