vsyncandback_porch 236 drivers/gpu/drm/drm_modes.c int vsyncandback_porch, vback_porch, hblank; vsyncandback_porch 248 drivers/gpu/drm/drm_modes.c vsyncandback_porch = vsync + CVT_MIN_V_PORCH; vsyncandback_porch 250 drivers/gpu/drm/drm_modes.c vsyncandback_porch = tmp1; vsyncandback_porch 252 drivers/gpu/drm/drm_modes.c vback_porch = vsyncandback_porch - vsync; vsyncandback_porch 254 drivers/gpu/drm/drm_modes.c vsyncandback_porch + CVT_MIN_V_PORCH;