Function prototype or declaration at include/drm/drm_atomic_helper.h, line 43 References: drivers/gpu/drm/arc/arcpgu_drv.c, line 37 drivers/gpu/drm/arm/hdlcd_drv.c, line 111 drivers/gpu/drm/arm/malidp_drv.c, line 254 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c, line 567 drivers/gpu/drm/drm_atomic_helper.c, line 785 drivers/gpu/drm/drm_atomic_helper.c, line 803 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c, line 21 drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c, line 553 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c, line 61 drivers/gpu/drm/mediatek/mtk_drm_drv.c, line 132 drivers/gpu/drm/meson/meson_drv.c, line 79 drivers/gpu/drm/mxsfb/mxsfb_drv.c, line 96 drivers/gpu/drm/nouveau/nv50_display.c, line 4259 drivers/gpu/drm/omapdrm/omap_drv.c, line 136 drivers/gpu/drm/pl111/pl111_drv.c, line 78 drivers/gpu/drm/qxl/qxl_display.c, line 1123 drivers/gpu/drm/rockchip/rockchip_drm_fb.c, line 182 drivers/gpu/drm/stm/drv.c, line 36 drivers/gpu/drm/sun4i/sun4i_framebuffer.c, line 29 drivers/gpu/drm/tegra/drm.c, line 125 drivers/gpu/drm/tinydrm/core/tinydrm-core.c, line 137 drivers/gpu/drm/vc4/vc4_kms.c, line 198 drivers/gpu/drm/virtio/virtgpu_display.c, line 357 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c, line 1565 drivers/gpu/drm/xlnx/xlnx_drv.c, line 120 drivers/gpu/drm/zte/zx_drm_drv.c, line 45 include/drm/drm_atomic_helper.h, line 43