[Intel-gfx] [PATCH 2/2] drm/i915: shut up gen8+ SDE irq dmesg noise

[Ville Syrjälä]

On Fri, Oct 23, 2015 at 11:23:12AM +0200, Daniel Vetter wrote:
> On Fri, Oct 23, 2015 at 12:21:37PM +0300, Jani Nikula wrote:
> > On Fri, 23 Oct 2015, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > > On Fri, Oct 23, 2015 at 10:56:12AM +0200, Daniel Vetter wrote:
> > >> We get tons of cases where the master interrupt handler apparently set
> > >> a bit, with the SDEIIR agreeing. No idea what's going on there, but
> > >> it's consistent on gen8+, no one seems to care about it and it's
> > >> making CI results flaky.
> > >
> > > Just delete the message and delete them all. There isn't anything we can
> > > do and if anybody actually cared (which apparently they didn't in the
> > > first place), they could just trace the mmio.
> > 
> > Except this one is a regression, introduced by a bisected commit, and
> > suspiciously the errors pop up during aux transfers.
> 
> dp aux is a red herring very likely, since it's just the source of a _lot_
> of sde interrupts.
> 
> > https://bugs.freedesktop.org/show_bug.cgi?id=92084
> 
> No one demonstrated any bad side-effects of this, let's shut it up (but
> keep the breadcrumb in debug logs in case) and move on to other bugs. We
> have enough.

I was still waiting for an answer to my latest idea how to avoid the
error. Would have been a very simple thing to test for anyone with the
hardware.

-- 
Ville Syrjälä
Intel OTC