[Bug 89493] [SKL] sporadic "missed interrupts"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89493

--- Comment #3 from Mika Kuoppala <mika.kuoppala at intel.com> ---
This hangcheck complaint is due to race between request->list addition and
hangcheck inspecting that list. 

This is not real hang and and could be not even a missed interrupt. Very likely
that hangcheck seeing ring being idle even if its not (due to that race).

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