[Intel-gfx] [PATCH] drm/i915: limit PM related interrupt enable to those we handle

[Jesse Barnes]

On Tue, 09 Aug 2011 10:02:54 -0700
Keith Packard <keithp at keithp.com> wrote:

> On Tue,  9 Aug 2011 09:29:20 -0700, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> 
> > -	I915_WRITE(GEN6_PMIMR, 0);
> > +	I915_WRITE(GEN6_PMIMR, ~GEN6_PM_DEFERRED_EVENTS);
> >  	spin_unlock_irq(&dev_priv->rps_lock);
> > -	/* enable all PM interrupts */
> > -	I915_WRITE(GEN6_PMINTRMSK, 0);
> > +	/* Enable only those we respond to in the deferred work handler */
> > +	I915_WRITE(GEN6_PMINTRMSK, GEN6_PMINTR_DEFERRED_EVENTS);
> 
> I think this is supposed to only enable the DEFERRED_EVENTS, right? In
> which case, I think you want to invert that (as 0 enables and 1 disables):
> 
>  +	I915_WRITE(GEN6_PMINTRMSK, ~GEN6_PMINTR_DEFERRED_EVENTS);
> 
> just like you did for the PMIMR register?

Yeah it went from 0 to just a few bits, but it should have been the ~
of that, you're right.  Will fix & test and resend.

-- 
Jesse Barnes, Intel Open Source Technology Center