[v3.7-rcx] drm/i915: *ERROR* Timed out waiting for forcewake old ack to clear

[Chris Wilson]

On Tue, 27 Nov 2012 17:29:36 +0100, Jörg Otte <jrg.otte at gmail.com> wrote:
> At boot-up with newer kernels (at least v3.6.x, v3.7-rc) I always see
> following on the bootup-display:
> 
> 3.7-rcx: [drm:__gen6_gt_force_wake_mt_get] *ERROR* Timed out waiting
> for forcewake old ack to clear.
> 3.6.x:    [drm:__gen6_gt_force_wake_mt_get] *ERROR* Force wake wait timed out

This is harmless error, just reporting a one-time conflict with the
state leftover by the BIOS. The fix is queued for 3.8.

commit 16995a9fe140802c026c2ce17bf7e232f86d57ab
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Oct 18 11:46:10 2012 +0100

    drm/i915: Clear FORCEWAKE when taking over from BIOS
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre