618 	u32 y1, y2;  in uvc_video_clock_update()  local
645 	y2 = (last->dev_sof + 2048) << 16;  in uvc_video_clock_update()
646 	if (y2 < y1)  in uvc_video_clock_update()
647 		y2 += 2048 << 16;  in uvc_video_clock_update()
649 	y = (u64)(y2 - y1) * (1ULL << 31) + (u64)y1 * (u64)x2  in uvc_video_clock_update()
650 	  - (u64)y2 * (u64)x1;  in uvc_video_clock_update()
660 		  x1, x2, y1, y2, clock->sof_offset);  in uvc_video_clock_update()
672 	y2 = (ts.tv_sec + 1) * NSEC_PER_SEC + ts.tv_nsec;  in uvc_video_clock_update()
685 	y = (u64)(y2 - y1) * (u64)sof + (u64)y1 * (u64)x2  in uvc_video_clock_update()
686 	  - (u64)y2 * (u64)x1;  in uvc_video_clock_update()
705 		  x2, last->host_sof, last->dev_sof, y1, y2);  in uvc_video_clock_update()