[Bug 90741] Radeon: System pauses on TAHITI

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=90741

Maarten Lankhorst <bugs at mblankhorst.nl> changed:

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--- Comment #13 from Maarten Lankhorst <bugs at mblankhorst.nl> ---
Created attachment 164121
  --> https://bugzilla.kernel.org/attachment.cgi?id=164121&action=edit
Use exclusive wait to put the waiter at the end of the waitqueue

Ok seems I made a thinko. wait_event_interruptible_timeout and
wait_event_timeout add items to the front of the queue instead of the back,
this may result in fences never signalling.

Can you test the attached patch?

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