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

[Keith Packard]

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?

> Does EIR even persist between phases to cause these issues in the
> first place?

Yeah, seems like a bit of testing might be able to check this fairly quickly.

-- 
keith.packard at intel.com
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