Symbol: ktime_sub_us
drivers/media/cec/core/cec-pin.c
615
pin->ts = ktime_sub_us(ts, CEC_TIM_DATA_BIT_SAMPLE);
drivers/platform/chrome/cros_usbpd_logger.c
96
tstamp = ktime_sub_us(tstamp, r->timestamp << PD_LOG_TIMESTAMP_SHIFT);