MIN_VSYNC_PLUS_BP 444 drivers/gpu/drm/drm_modes.c tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; MIN_VSYNC_PLUS_BP 452 drivers/gpu/drm/drm_modes.c vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000;