Function prototype or declaration at include/drm/drm_modes.h, line 515 References: drivers/gpu/drm/drm_atomic_helper.c, line 580 drivers/gpu/drm/drm_crtc_helper.c, line 615 drivers/gpu/drm/drm_fb_helper.c, line 2382 drivers/gpu/drm/drm_modes.c, line 1052 drivers/gpu/drm/drm_modes.c, line 1062 drivers/gpu/drm/drm_modes.c, line 1378 drivers/gpu/drm/meson/meson_venc_cvbs.c, line 155 drivers/gpu/drm/meson/meson_venc_cvbs.c, line 203 drivers/gpu/drm/nouveau/dispnv50/disp.c, line 330 drivers/gpu/drm/sti/sti_hda.c, line 282 drivers/gpu/drm/vc4/vc4_vec.c, line 534 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c, line 582 drivers/gpu/drm/xilinx/xilinx_drm_sdi.c, line 872 drivers/gpu/drm/xlnx/xlnx_sdi.c, line 562 drivers/gpu/drm/zte/zx_tvenc.c, line 142 include/drm/drm_modes.h, line 515