[Bug 68718] [snb] vsync hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68718

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO

--- Comment #33 from Chris Wilson <chris at chris-wilson.co.uk> ---
Spotted a different hw w/a mentioned in bspec:

commit d247cb7d0cdb73736f31612157e47f166af68ba0
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Mon Dec 8 10:07:25 2014 +0000

    sna/gen6: Poke PSMI control around WAIT_FOR_EVENT to prevent idling

    The bspec recommends preventing the hardware from going to sleep around
    a WAIT_FOR_EVENT, and tells us to use disable sleep bit in PSMI control
    to accomplish this.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=62373
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>


Hopefully that does the trick.

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