Extern or forward variable declaration at include/drm/drm_gem_framebuffer_helper.h, line 6 References: drivers/gpu/drm/amd/amdgpu/amdgpu_display.c, line 1090 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c, line 1180 drivers/gpu/drm/arm/malidp_drv.c, line 305 drivers/gpu/drm/arm/malidp_drv.c, line 365 drivers/gpu/drm/arm/malidp_drv.c, line 375 drivers/gpu/drm/arm/malidp_drv.c, line 461 drivers/gpu/drm/drm_gem_framebuffer_helper.c, line 115 drivers/gpu/drm/drm_gem_framebuffer_helper.c, line 146 drivers/gpu/drm/drm_gem_framebuffer_helper.c, line 219 drivers/gpu/drm/drm_gem_framebuffer_helper.c, line 268 drivers/gpu/drm/drm_gem_framebuffer_helper.c, line 306 drivers/gpu/drm/exynos/exynos_drm_fb.c, line 96 drivers/gpu/drm/gma500/framebuffer.c, line 351 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c, line 47 drivers/gpu/drm/imx/imx-drm-core.c, line 150 drivers/gpu/drm/ingenic/ingenic-drm-drv.c, line 741 drivers/gpu/drm/mediatek/mtk_drm_drv.c, line 44 drivers/gpu/drm/meson/meson_drv.c, line 79 drivers/gpu/drm/msm/msm_fb.c, line 101 drivers/gpu/drm/mxsfb/mxsfb_drv.c, line 88 drivers/gpu/drm/nouveau/nouveau_display.c, line 382 drivers/gpu/drm/nouveau/nouveau_display.c, line 814 drivers/gpu/drm/omapdrm/omap_fb.c, line 59 drivers/gpu/drm/omapdrm/omap_fb.c, line 304 drivers/gpu/drm/qxl/qxl_display.c, line 401 drivers/gpu/drm/qxl/qxl_display.c, line 1169 drivers/gpu/drm/radeon/radeon_display.c, line 1311 drivers/gpu/drm/rcar-du/rcar_du_kms.c, line 328 drivers/gpu/drm/rcar-du/rcar_du_kms.c, line 350 drivers/gpu/drm/rockchip/rockchip_drm_fb.c, line 61 drivers/gpu/drm/shmobile/shmob_drm_kms.c, line 92 drivers/gpu/drm/stm/drv.c, line 38 drivers/gpu/drm/tegra/fb.c, line 140 drivers/gpu/drm/tiny/bochs.c, line 512 drivers/gpu/drm/tiny/cirrus.c, line 491 drivers/gpu/drm/vc4/vc4_kms.c, line 436 drivers/gpu/drm/virtio/virtgpu_display.c, line 294 drivers/gpu/drm/xen/xen_drm_front_kms.c, line 55 drivers/gpu/drm/xlnx/zynqmp_dpsub.c, line 39 drivers/gpu/drm/xlnx/zynqmp_dpsub.c, line 53 include/drm/drm_gem_framebuffer_helper.h, line 12 include/drm/drm_gem_framebuffer_helper.h, line 23 include/drm/drm_gem_framebuffer_helper.h, line 28 include/drm/drm_gem_framebuffer_helper.h, line 32 include/drm/drm_gem_framebuffer_helper.h, line 36 include/drm/drm_gem_framebuffer_helper.h, line 39