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Date:   Mon, 24 Jun 2019 08:36:18 -0700
From:   Stephen Hemminger <stephen@networkplumber.org>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     Octavio Alvarez <octallk1@alvarezp.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>, x86@kernel.org,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        "Steven Rostedt (VMware)" <rostedt@goodmis.org>,
        Jiang Biao <jiang.biao2@zte.com.cn>,
        Yi Wang <wang.yi59@zte.com.cn>,
        Dou Liyang <douly.fnst@cn.fujitsu.com>,
        Nicolai Stange <nstange@suse.de>,
        Mirko Lindner <mlindner@marvell.com>
Subject: Re: PROBLEM: Marvell 88E8040 (sky2) fails after hibernation
Message-ID: <20190624083618.28cfd30a@hermes.lan>
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On Sun, 23 Jun 2019 14:54:13 +0200 (CEST)
Thomas Gleixner <tglx@linutronix.de> wrote:

> Octavio,
> 
> On Sat, 22 Jun 2019, Thomas Gleixner wrote:
> > On Wed, 19 Jun 2019, Octavio Alvarez wrote:  
> > > On 6/13/19 3:45 PM, Thomas Gleixner wrote:  
> > > > Can you please provide the content of /proc/interrupts with the driver
> > > > loaded and working after boot (don't hibernate) for the following kernels:
> > > >   
> > > 
> > > $ cat linux-master-after-boot.txt
> > >            CPU0       CPU1       CPU2       CPU3  
> >   
> > >  27:          1          0          0          0   PCI-MSI 3145728-edge eth0  
> >   
> > > >    Linus upstream + revert  
> > > 
> > > $ cat linux-master-reverted-after-boot.txt
> > >            CPU0       CPU1       CPU2       CPU3  
> >   
> > >  27:          1          0          0          0   PCI-MSI 3145728-edge eth0  
> >    
> > > Meanwhile, here it is for 4.9, which is the latest Debian-provided kernel and
> > > worked:
> > > 
> > > $ cat linux-4.9-after-boot.txt
> > >            CPU0       CPU1       CPU2       CPU3  
> >   
> > >  24:          1          0          0          0   PCI-MSI 3145728-edge eth0  
> >    
> > > I will keep trying 4.14, unless you say otherwise.  
> > 
> > It would be interesting though I don't expect too much data.
> > 
> > So all of the above use PCI/MSI. That's at least a data point. I need to
> > stare into that driver again to figure out why this might make a
> > difference, but right now I'm lost.  
> 
> One other data point you could provide please:
> 
>  Load the driver on Linus master with the following module parameter:
> 
>    disable_msi=1
> 
> That switches to INTx usage. Does the machine resume proper with that?
> 
> Thanks,
> 
> 	tglx


Suspend/resume and hibernation issues are often related to BIOS issues.