[Bug 104975] Delay in skl_disable_plane() causes a system freeze

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104975

--- Comment #50 from marc.herbert at intel.com ---
Tarun's experience seem to differ:
https://lists.freedesktop.org/archives/intel-gfx/2018-April/162279.html

> We run the evasion code with IRQs disabled, so at the time critical point the code is fully deterministic, even in the worst case.

Even if this can be proven with absolute certainty in some particular kernel
version(s), it sounds like a guarantee difficult to maintain over time in
hardware+firmware+software systems not designed for and generally not
interested in real-time (and even more difficult to maintain in product kernels
with many various backports - but I digress)

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