[Intel-gfx] [PATCH 2/2] drm/i915: Implement w/a for sporadic read failures on waking from rc6

[Eugeni Dodonov]

On 06/13/2012 02:29 PM, Chris Wilson wrote:
> As a w/a to prevent reads sporadically returning 0, we need to wait for
> the GT thread to return to TC0 before proceeding to read the registers.
> 
> References: https://bugs.freedesktop.org/show_bug.cgi?id=50243
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Reviewed-by: Eugeni Dodonov <eugeni.dodonov at intel.com>

I think that this patch could solve some of the RC6-related issues which
are still out there. So the ones of you affected by random GPU hangs or
dropped writes, could you please give this patch a try?

Eugeni