return NULL;
 }
 
-static void get_buf_timestamp(struct timeval *tv)
-{
-       struct timespec ts;
-       ktime_get_ts(&ts);
-       tv->tv_sec = ts.tv_sec;
-       tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC;
-}
-
 static void atomisp_flush_video_pipe(struct atomisp_sub_device *asd,
                                     struct atomisp_video_pipe *pipe)
 {
                spin_lock_irqsave(&pipe->irq_lock, irqflags);
                if (pipe->capq.bufs[i]->state == VIDEOBUF_ACTIVE ||
                    pipe->capq.bufs[i]->state == VIDEOBUF_QUEUED) {
-                       get_buf_timestamp(&pipe->capq.bufs[i]->ts);
+                       pipe->capq.bufs[i]->ts = ktime_get_ns();
                        pipe->capq.bufs[i]->field_count =
                                atomic_read(&asd->sequence) << 1;
                        dev_dbg(asd->isp->dev, "release buffers on device %s\n",
                break;
        }
        if (vb) {
-               get_buf_timestamp(&vb->ts);
+               vb->ts = ktime_get_ns();
                vb->field_count = atomic_read(&asd->sequence) << 1;
                /*mark videobuffer done for dequeue*/
                spin_lock_irqsave(&pipe->irq_lock, irqflags);