Extern or forward variable declaration at include/drm/drmP.h, line 93 References: drivers/gpu/drm/arm/hdlcd_crtc.c, line 108 drivers/gpu/drm/arm/malidp_crtc.c, line 60 drivers/gpu/drm/arm/malidp_hw.c, line 155 drivers/gpu/drm/arm/malidp_hw.c, line 301 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c, line 81 drivers/gpu/drm/drm_modes.c, line 586 drivers/gpu/drm/drm_modes.c, line 628 drivers/gpu/drm/drm_modes.c, line 669 drivers/gpu/drm/drm_modes.c, line 703 drivers/gpu/drm/exynos/exynos_dp.c, line 42 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 34 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 191 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 274 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 898 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 1601 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 104 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 157 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 181 drivers/gpu/drm/exynos/exynos_drm_mic.c, line 192 drivers/gpu/drm/imx/ipuv3-crtc.c, line 160 drivers/gpu/drm/mediatek/mtk_dsi.c, line 140 drivers/gpu/drm/mediatek/mtk_dsi.c, line 343 drivers/gpu/drm/mediatek/mtk_dsi.c, line 439 drivers/gpu/drm/panel/panel-lg-lg4573.c, line 32 drivers/gpu/drm/panel/panel-samsung-ld9040.c, line 98 drivers/gpu/drm/panel/panel-samsung-s6e8aa0.c, line 105 drivers/gpu/drm/panel/panel-simple.c, line 109 drivers/gpu/drm/rcar-du/rcar_du_lvdscon.c, line 34 drivers/gpu/drm/tilcdc/tilcdc_panel.c, line 163 drivers/gpu/drm/xilinx/xilinx_drm_crtc.c, line 142 drivers/gpu/drm/xilinx/xilinx_drm_dsi.c, line 114 drivers/gpu/drm/xilinx/xilinx_drm_dsi.c, line 208 drivers/gpu/drm/xilinx/xilinx_drm_dsi.c, line 589 drivers/gpu/drm/xilinx/xilinx_vtc.c, line 375 drivers/gpu/drm/xylon/xylon_crtc.c, line 56 drivers/gpu/drm/xylon/xylon_logicvc.c, line 228 drivers/gpu/drm/xylon/xylon_logicvc.c, line 658 drivers/gpu/drm/xylon/xylon_logicvc.c, line 662 include/drm/drmP.h, line 93