Function prototype or declaration at include/drm/drm_fb_helper.h, line 278 References: drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c, line 347 drivers/gpu/drm/armada/armada_fbdev.c, line 136 drivers/gpu/drm/ast/ast_fb.c, line 295 drivers/gpu/drm/cirrus/cirrus_fbdev.c, line 292 drivers/gpu/drm/drm_fb_helper.c, line 847 drivers/gpu/drm/drm_fb_helper.c, line 901 drivers/gpu/drm/drm_fb_helper.c, line 2923 drivers/gpu/drm/drm_fb_helper.c, line 3238 drivers/gpu/drm/exynos/exynos_drm_fbdev.c, line 206 drivers/gpu/drm/gma500/framebuffer.c, line 535 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c, line 200 drivers/gpu/drm/i915/intel_fbdev.c, line 690 drivers/gpu/drm/mgag200/mgag200_fb.c, line 283 drivers/gpu/drm/msm/msm_fbdev.c, line 177 drivers/gpu/drm/nouveau/nouveau_fbcon.c, line 567 drivers/gpu/drm/omapdrm/omap_fbdev.c, line 265 drivers/gpu/drm/radeon/radeon_fb.c, line 357 drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c, line 140 drivers/gpu/drm/tegra/fb.c, line 322 drivers/gpu/drm/udl/udl_fb.c, line 457 drivers/staging/vboxvideo/vbox_fb.c, line 241 include/drm/drm_fb_helper.h, line 278 include/drm/drm_fb_helper.h, line 366