[Bug 68575] [hsw] *ERROR* Timed out waiting for forcewake old ack to clear.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68575

--- Comment #1 from Daniel Vetter <daniel at ffwll.ch> ---
(In reply to comment #0)
> There is a low probabilty of this timeout ocurring, especially noticeable if
> polling the rings for GPU busyness.

So essentially it's broken, only pampered over by us not using forcewake too
often? Do consistency checks of the forcewake register turn up anything? Iirc
I've heard some noise that this register sometimes drops writes or wreaks other
havoc ...

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