[Intel-gfx] [PATCH 4/5] drm/atomic-helper: Reject legacy flips on a disabled pipe

Daniel Stone daniel at fooishbar.org
Tue Dec 8 04:01:57 PST 2015


On 8 December 2015 at 08:49, Daniel Vetter <daniel.vetter at ffwll.ch> wrote:
> We want this for consistency with existing page_flip semantics.
> Since this spurred quite a discussion on IRC also document why we
> reject even generation when the pipe is off: It's not that it's hard
> to implement, but userspace has a track recording proofing that it's
> way too easy to accidentally abuse and cause havoc. We want to make
> sure userspace doesn't get away with that.
> v2: Somehow thought we do reject events already, but that code only
> existed in my imagination ... Also suggestions from Thierry.

What a beautifully-coloured shed.

Reviewed-by: Daniel Stone <daniels at collabora.com>


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