Re: PROBLEM: Marvell 88E8040 (sky2) fails after hibernation

[Thomas Gleixner]

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