[Bug 101891] [BAT][BDW] WARN_ON(!intel_engines_are_idle(dev_priv)) in i915_gem_suspend+0x123/0x140

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101891

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
To allow the machine to recover after we encounter this mystery:

commit fc692bd31bc9dd17c7cc59abdb514a58964fc2a7
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Sat Aug 26 12:09:35 2017 +0100

    drm/i915: Discard the request queue if we fail to sleep before suspend

    If we fail to clear the outstanding request queue before suspending,
    mark those requests as lost.

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