netdev - Re: PROBLEM: [2/2] Marvell 88E8040 (sky2) fails after hibernation

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Message-ID: <a3a201a1-0b24-8d82-90f6-9196d4aef490@alvarezp.org>
Date:   Tue, 28 May 2019 22:57:37 -0500
From:   Octavio Alvarez <octallk1@...arezp.org>
To:     Mirko Lindner <mlindner@...vell.com>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     netdev@...r.kernel.org
Subject: Re: PROBLEM: [2/2] Marvell 88E8040 (sky2) fails after hibernation

Hi!

On 5/18/19 11:07 AM, Octavio Alvarez wrote:
> PROBLEM: [2/2] Marvell 88E8040 (sky2) fails after hibernation
> 
> Hibernating the machine and bringing it back does not properly bring back
> the Marvell NIC. Most of the time a module reload does not help.
> 
> Problem starts on the following commit:
> 
> commit bc976233a872c0f20f018fb1e89264a541584e25
> Author: Thomas Gleixner <tglx@...utronix.de>
> Date:   Fri Dec 29 10:47:22 2017 +0100
> 
>      genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI

Sorry for insisting but can anybody help out? It was working up to 
before kernel 4.15.

Reverting this 2017 patch over master fixes the issue but the changes 
are unrelated to the driver:

$ git show --stat=60 bc976233a872 | grep \|
  arch/x86/kernel/apic/vector.c | 12 +++++++-
  kernel/irq/msi.c              | 37 ++++++++++++++++++++---

Thanks,
Octavio.