Re: [linux-pm] forcedeth 10de:0373 doesn't work on resume

[Simon Arlott]

On 18/08/08 22:13, Rafael J. Wysocki wrote:
> On Monday, 18 of August 2008, Andrew Morton wrote:
> > On Tue, 05 Aug 2008 20:29:44 +0100
> > Simon Arlott <simon@xxxxxxxxxxx> wrote:
> > >
> >
> > [two weeks pass...]
>
> [Must have missed this message.]
>
> I have a box with forcedeth that evidently works after a resume from
> hibernation.  Unfortunately, so far I haven't been able to make the box

With hibernation would it re-initialise the devices differently?

> resume from suspend to RAM.  I'll do my best to try again tomorrow, but there's
> a little hope. :-(

Mine doesn't either, try standby?

> > > My NIC stops working after resuming from standby, it's not receiving any interrupts:
> > > Commit 25d90810ff49d2a63475776f24c74c6bb49b045f ([netdrvr] forcedeth: reorder suspend/resume code) 
> > > introduces pci_disable_device to nv_suspend, but there's no corresponding pci_enable_device in 
> > > nv_resume - so I added one (copied from e1000):
> > > 
> > > diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
> > > index 01b38b0..db4f875 100644
> > > --- a/drivers/net/forcedeth.c
> > > +++ b/drivers/net/forcedeth.c
> > > @@ -5922,6 +5922,13 @@ static int nv_resume(struct pci_dev *pdev)
> > >  
> > >  	pci_set_power_state(pdev, PCI_D0);
> > >  	pci_restore_state(pdev);
> > > +	rc = pci_enable_device(pdev);
> > > +	if (rc) {
> > > +		printk(KERN_ERR "forcedeth: Cannot enable PCI device from suspend\n");
> > > +		return rc;
> > > +	}
> > > +	pci_set_master(pdev);
> > > +
> > >  	/* ack any pending wake events, disable PME */
> > >  	pci_enable_wake(pdev, PCI_D0, 0);
> > >  
> >
> > That seems like a sensible change.

With this applied, I can resume from standby *without MSI* and the 
NIC still works. I haven't tested it without MSI and without the 
patch... mostly because I got a BUG when I tried to recompile.

> > > This results in interrupts being re-enabled after suspend:
> > > However, the NIC still doesn't work after resume.
>
> Simon, I'd prefer the full dmesg to the grepped forcedeth messages.

Attached. (The previous email has all the standby/resume log output.)

> I guess this was resume from suspend to RAM?

Standby - resume from RAM is completely broken for my system.

> > Is it still broken in current kernels?
>
> It probably is.

If I have MSI enabled, it still doesn't work.

--
Simon Arlott

Attachment: dmesg3.bz2
Description: application/bzip