Extern or forward variable declaration at include/drm/drm_drv.h, line 41 References: drivers/gpu/drm/arm/display/komeda/komeda_kms.c, line 29 drivers/gpu/drm/arm/malidp_drv.c, line 461 drivers/gpu/drm/drm_client.c, line 252 drivers/gpu/drm/drm_client.c, line 267 drivers/gpu/drm/drm_dumb_buffers.c, line 58 drivers/gpu/drm/drm_dumb_buffers.c, line 59 drivers/gpu/drm/drm_dumb_buffers.c, line 100 drivers/gpu/drm/drm_gem_cma_helper.c, line 213 drivers/gpu/drm/drm_gem_cma_helper.c, line 250 drivers/gpu/drm/drm_gem_shmem_helper.c, line 509 drivers/gpu/drm/drm_gem_vram_helper.c, line 550 drivers/gpu/drm/drm_gem_vram_helper.c, line 659 drivers/gpu/drm/i915/i915_drv.h, line 1864 drivers/gpu/drm/i915/i915_gem.c, line 220 drivers/gpu/drm/meson/meson_drv.c, line 80 drivers/gpu/drm/nouveau/nouveau_display.c, line 819 drivers/gpu/drm/nouveau/nouveau_display.h, line 60 drivers/gpu/drm/radeon/radeon_drv.c, line 147 drivers/gpu/drm/stm/drv.c, line 40 drivers/gpu/drm/sun4i/sun4i_drv.c, line 33 drivers/gpu/drm/tegra/gem.c, line 457 drivers/gpu/drm/vgem/vgem_drv.c, line 209 drivers/gpu/drm/virtio/virtgpu_drv.h, line 251 drivers/gpu/drm/virtio/virtgpu_gem.c, line 66 drivers/gpu/drm/xen/xen_drm_front.c, line 386 drivers/gpu/drm/xlnx/xlnx_gem.c, line 38 include/drm/drm_drv.h, line 41 include/drm/drm_drv.h, line 486