[Intel-gfx] [PATCH] drm/i915: Don't do posting reads on getting forcewake

[Daniel Vetter]

On Wed, Jan 28, 2015 at 02:04:27PM +0000, Chris Wilson wrote:
> On Wed, Jan 28, 2015 at 03:25:05PM +0200, Mika Kuoppala wrote:
> > The checking for ack and also any subsequent mmio access
> > will serialize with setting the forcewake bit. Drop the
> > posting read as superfluous.
> > 
> > Note that in the put side we still want to keep the posting read
> > as it will ensure that the hw sees our forcewake release in a
> > timely manner and doesn't keep the hw powered up.
> > 
> > Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>

This and 1/3 merged, thansk for patches&review.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch