Re: [Intel-wired-lan] [PATCH 2/3] e1000e: Make mei_me active when e1000e is in use

[Ruinskiy, Dima]

On 14/07/2021 9:28, Kai-Heng Feng wrote:
> > I do not know how MEI driver affect 1Gbe driver - so, I would suggest to
> > involve our CSME engineer (alexander.usyskin@xxxxxxxxx) and try to
> > investigate this problem.
> > Does this problem observed on Dell systems? As I heard no reproduction
> > on Intel's RVP platform.
> > Another question: does disable mei_me runpm solve your problem?
>
> Yes, disabling runpm on mei_me can workaround the issue, and that's
> essentially what this patch does by adding DL_FLAG_PM_RUNTIME |
> DL_FLAG_RPM_ACTIVE flag.
>
> Kai-Heng
Hi, Kai-Heng,

If the goal of the patch is to essentially disable runpm on mei_me, then 
why is the patch touching code in the e1000e driver?

I agree with Sasha Neftin; it seems like the wrong location, and the 
wrong way to do it, even if it currently works. We need to understand 
what causes runpm of mei_me to adversely affect LAN Rx, and for this we 
need the involvement of mei_me owners.

--Dima
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