[Nouveau] [Bug 99584] XVMC on nv43 class card broken with recent mesa + kernel.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99584

--- Comment #7 from Ilia Mirkin <imirkin at alum.mit.edu> ---
OK, looks like this isn't so trivial to solve. The code really likes having
something in chan->engn[] so that it can get the address. The old code just
stuck a "4" in if it was a non-GR class. I wonder if the current code should
check for ->engn[] != null, and if it's null, use a 4 there for the inst
address.

This will need consultation with Ben, as this is well outside my knowledge
area.

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