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

[Jani Nikula]

On Tue, 27 Oct 2015, Daniel Vetter <daniel at ffwll.ch> wrote:
> On Fri, Oct 23, 2015 at 8:22 AM, Ville Syrjälä
> <ville.syrjala at linux.intel.com> wrote:
>> The regressing patch change didn't add the message, so there was a clear
>> change in behaviour, and now it's papered over.
>
> It did move around the DRM_ERROR for all the others and also added the
> SDE one for consistency. At least that's how I read that patch - I
> could't find the SDE DRM_ERROR in the old code. Did I miss something?

Yes. We tried and failed to point out that this is a bisected regression
with a bug report. The bad commit is *NOT* when the error message was
added or moved. The first bad commit is

commit aaf5ec2e51ab1d9c5e962b4728a1107ed3ff7a3e
Author: Sonika Jindal <sonika.jindal at intel.com>
Date:   Wed Jul 8 17:07:47 2015 +0530

    drm/i915: Handle HPD when it has actually occurred

which triggers printing of the error message. This is all mentioned in
the bug, along with a few attempts at remedying the situation.


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center