Lucid SRU: drm: mm: fix range restricted allocations

[Stefan Bader]

On 14.10.2011 16:05, Seth Forshee wrote:
> == SRU Justification ==
> 
> Impact: A regression in the 2.6.32-34 kernel is causing graphics
> corruption on the Asus A7V-E with nvidia graphics.
> 
> Fix: Backport of upstream bug fix for range-restricted allocations in
> DRM.
> 
> Test case: Verified to fix corruption by reporter on LP #873130.
> 
Backport matches the flow of the upstream change which has been identified there
as a regression, too. It was verified to fix the issue as well. May need to look
generally on any other gfx combination as this touches rather generic code.

Acked-by: Stefan Bader <smb at canonical.com>