Function prototype or declaration at include/drm/drm_fb_helper.h, line 218 References: drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c, line 302 drivers/gpu/drm/armada/armada_fbdev.c, line 152 drivers/gpu/drm/armada/armada_fbdev.c, line 166 drivers/gpu/drm/drm_fb_helper.c, line 567 drivers/gpu/drm/drm_fb_helper.c, line 603 drivers/gpu/drm/drm_fb_helper.c, line 2053 drivers/gpu/drm/drm_fb_helper.c, line 2126 drivers/gpu/drm/exynos/exynos_drm_fbdev.c, line 228 drivers/gpu/drm/exynos/exynos_drm_fbdev.c, line 255 drivers/gpu/drm/gma500/framebuffer.c, line 493 drivers/gpu/drm/gma500/framebuffer.c, line 537 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c, line 149 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c, line 229 drivers/gpu/drm/i915/display/intel_fbdev.c, line 293 drivers/gpu/drm/msm/msm_fbdev.c, line 185 drivers/gpu/drm/msm/msm_fbdev.c, line 201 drivers/gpu/drm/nouveau/nouveau_fbcon.c, line 419 drivers/gpu/drm/nouveau/nouveau_fbcon.c, line 592 drivers/gpu/drm/omapdrm/omap_fbdev.c, line 262 drivers/gpu/drm/omapdrm/omap_fbdev.c, line 282 drivers/gpu/drm/radeon/radeon_fb.c, line 321 drivers/gpu/drm/radeon/radeon_fb.c, line 376 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c, line 153 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c, line 169 drivers/gpu/drm/tegra/fb.c, line 340 drivers/gpu/drm/tegra/fb.c, line 360 drivers/gpu/drm/udl/udl_fb.c, line 426 drivers/gpu/drm/udl/udl_fb.c, line 467 drivers/gpu/drm/vboxvideo/vbox_fb.c, line 145 drivers/gpu/drm/xlnx/xlnx_fb.c, line 315 drivers/gpu/drm/xlnx/xlnx_fb.c, line 354 include/drm/drm_fb_helper.h, line 218 include/drm/drm_fb_helper.h, line 304