Fix for vblank on nvc0

[Maarten Lankhorst]

Op 11-11-12 19:35, Marcin Slusarz schreef:
> On Sun, Nov 11, 2012 at 07:26:17PM +0100, Marcin Slusarz wrote:
>> On Tue, Nov 06, 2012 at 07:30:00PM +0100, Maarten Lankhorst wrote:
>>>
>>> Op 06-11-12 15:48, Kelly Doran schreef:
>>>> The vblank on nvc0 was not working correctly and would freeze X, I managed
>>>> to track it down and fix it with some help from m.b.lankhorst, see
>>>> https://bugs.freedesktop.org/show_bug.cgi?id=56692 for details.
>>>>
>>> Reviewed-by: Maarten Lankhorst <maarten.lankhorst at canonical.com>
>>>
>>> I recommended the bar flush since nvd0 does as well, and there might be a small race
>>> otherwise.
>>>
>>> Can this still get in before final 3.7 release?
>> This patch breaks vblank here (nv92) completely.
Does removing the bar flush help?

~Maarte