Extern or forward variable declaration at include/drm/drmP.h, line 88 References: drivers/gpu/drm/arm/hdlcd_crtc.c, line 99 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c, line 63 drivers/gpu/drm/drm_modes.c, line 584 drivers/gpu/drm/drm_modes.c, line 626 drivers/gpu/drm/drm_modes.c, line 675 drivers/gpu/drm/exynos/exynos_dp_core.h, line 168 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 33 drivers/gpu/drm/exynos/exynos_drm_dpi.c, line 265 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 274 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 907 drivers/gpu/drm/exynos/exynos_drm_dsi.c, line 1619 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 346 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 108 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 127 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 88