[Bug 92181] [SKL] igt/kms_plane/plane-position-covered-pipe-b-plane-2 fail and cause system crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92181

--- Comment #6 from Maarten Lankhorst <bugs at mblankhorst.nl> ---
I think you should just write watermark values before turning off the crtc if
the crtc will end up being disabled. After that you should no longer touch the
crtc specific registers since its turned off and dead.

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