Function prototype or declaration at include/drm/drm_crtc.h, line 2540 References: drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c, line 117 drivers/gpu/drm/ast/ast_fb.c, line 175 drivers/gpu/drm/cirrus/cirrus_fbdev.c, line 148 drivers/gpu/drm/cirrus/cirrus_main.c, line 58 drivers/gpu/drm/drm_crtc.c, line 5555 drivers/gpu/drm/drm_crtc.c, line 5619 drivers/gpu/drm/drm_crtc.c, line 5696 drivers/gpu/drm/drm_crtc_helper.c, line 886 drivers/gpu/drm/gma500/framebuffer.c, line 252 drivers/gpu/drm/qxl/qxl_fb.c, line 297 drivers/gpu/drm/radeon/radeon_fb.c, line 117 drivers/gpu/drm/sti/sti_gdp.c, line 774 drivers/gpu/drm/tilcdc/tilcdc_crtc.c, line 71 drivers/gpu/drm/tilcdc/tilcdc_crtc.c, line 137 drivers/gpu/drm/tilcdc/tilcdc_crtc.c, line 406 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c, line 989 drivers/gpu/drm/xilinx/xilinx_drm_fb.c, line 517 include/drm/drm_crtc.h, line 2540