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While reviewing Chris' patches to properly cancel our async workers I checked that this happens after the fbdev is already unregistered. That's the case, but I found a small gap in our docs, fill that in. Note that I don't explain what release_fbi does, because that function will disappear in the next patch ... Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170207141050.1129-1-daniel.vetter@ffwll.ch