[Intel-gfx] [PATCH] drm/i915: Clear any errors recorded before i915.ko is loaded

[Chris Wilson]

On Tue, 05 Apr 2011 18:27:45 -0700, Keith Packard <keithp at keithp.com> wrote:
> On Tue,  5 Apr 2011 23:00:46 +0100, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > This looks like it fixes two bugs:
> > 
> > 1) What if there is an error recorded before we start and so we
> > immediately service an IIR/EIR upon intalling the IRQ. Did we generate
> > that error during initialisation or was that SEP? Now we do stuff before
> > we even install the IRQ so there is a possibility that we zap one of our
> > own.
> 
> How will processing a pre-existing error condition cause trouble?

So that I can separate out bug reports that are caused by us during
initialisation from those that are caused by whatever was running before
us.

Considering the difficulty in working out what caused a PGTBL_ER during
initialisation, any reduction in the volume of noise is a good thing.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre