Hi all,

After merging the drm tree, today's linux-next build (htmldocs) produced
this warning:

WARNING: drivers/gpu/drm/drm_vblank.c:2267 expecting prototype for drm_crtc_vblank_start_timer(). Prototype was for drm_crtc_vblank_cancel_timer() instead

Introduced by commit

  74afeb812850 ("drm/vblank: Add vblank timer")

-- 
Cheers,
Stephen Rothwell