Function prototype or declaration at include/drm/drm_atomic_helper.h, line 162 References: drivers/gpu/drm/arc/arcpgu_crtc.c, line 197 drivers/gpu/drm/arm/hdlcd_crtc.c, line 286 drivers/gpu/drm/armada/armada_plane.c, line 269 drivers/gpu/drm/drm_atomic_helper.c, line 3609 drivers/gpu/drm/drm_atomic_helper.c, line 3619 drivers/gpu/drm/drm_crtc_helper.c, line 1080 drivers/gpu/drm/drm_plane_helper.c, line 469 drivers/gpu/drm/drm_plane_helper.c, line 521 drivers/gpu/drm/drm_simple_kms_helper.c, line 204 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.c, line 184 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c, line 154 drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c, line 909 drivers/gpu/drm/meson/meson_plane.c, line 192 drivers/gpu/drm/omapdrm/omap_plane.c, line 189 drivers/gpu/drm/qxl/qxl_display.c, line 804 drivers/gpu/drm/qxl/qxl_display.c, line 826 drivers/gpu/drm/rockchip/rockchip_drm_vop.c, line 832 drivers/gpu/drm/sti/sti_plane.c, line 115 drivers/gpu/drm/stm/ltdc.c, line 821 drivers/gpu/drm/sun4i/sun8i_ui_layer.c, line 300 drivers/gpu/drm/sun4i/sun8i_vi_layer.c, line 328 drivers/gpu/drm/tilcdc/tilcdc_plane.c, line 31 drivers/gpu/drm/virtio/virtgpu_plane.c, line 77 drivers/gpu/drm/zte/zx_plane.c, line 457 drivers/staging/vboxvideo/vbox_mode.c, line 518 drivers/staging/vboxvideo/vbox_mode.c, line 540 include/drm/drm_atomic_helper.h, line 162