[Bug 70570] [BYT]igt/kms_flip/wf_vblank-vs-modeset cause WARNING: CPU: 0 PID: 3716 at drivers/gpu/drm/i915/intel_dp.c:2653 intel_dp_link_down+0x5b/0x18d [i915]()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70570

--- Comment #1 from Imre Deak <imre.deak at gmail.com> ---
Created attachment 92023
  --> https://bugs.freedesktop.org/attachment.cgi?id=92023&action=edit
don't disable DP port during hot unplug

I hit the same WARN by first unplugging the DP cable and then doing an xrandr
--off. The problem is that that during the modeset the driver tries to disable
the already disabled DP port. One solution would be to leave the port enabled
during the unplug event handling and only disable it during the subsequent
modeset.

The attach patch does this, could you try it?

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