KSENSOR_F_VALID
if ((sensor->ksensor_flags & KSENSOR_F_VALID) != 0) {
sensor->ksensor_flags |= KSENSOR_F_VALID;
sensor->ksensor_flags &= ~KSENSOR_F_VALID;
if ((sensor->ksensor_flags & KSENSOR_F_VALID) == 0) {
(sensor->ksensor_flags & KSENSOR_F_VALID) == 0) {