Function prototype or declaration at include/drm/drm_modes.h, line 517 References: drivers/gpu/drm/drm_atomic_helper.c, line 622 drivers/gpu/drm/drm_client_modeset.c, line 484 drivers/gpu/drm/drm_crtc_helper.c, line 623 drivers/gpu/drm/drm_modes.c, line 1053 drivers/gpu/drm/drm_modes.c, line 1063 drivers/gpu/drm/drm_modes.c, line 1379 drivers/gpu/drm/meson/meson_venc.c, line 1052 drivers/gpu/drm/meson/meson_venc.c, line 1081 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 344 drivers/gpu/drm/sti/sti_hda.c, line 282 drivers/gpu/drm/vc4/vc4_vec.c, line 534 drivers/gpu/drm/zte/zx_tvenc.c, line 142 include/drm/drm_modes.h, line 517