Defined in 4 files as a prototype:
- drivers/gpu/drm/cirrus/cirrus.c, line 513 (as a prototype)
- drivers/gpu/drm/panfrost/panfrost_drv.c, line 473 (as a prototype)
- drivers/gpu/drm/tiny/gm12u320.c, line 652 (as a prototype)
- drivers/gpu/drm/v3d/v3d_drv.c, line 172 (as a prototype)