Re: [Bug] invalid mac address after rebooting (kernel 2.6.11.5)

[Daniel Drake <dsd@gentoo.org>]

Peter Baumann wrote:
> On Wed, Mar 23, 2005 at 06:52:25PM -0800, Andrew Morton wrote:
>
> > Peter Baumann <Peter.B.Baumann@stud.informatik.uni-erlangen.de> wrote:
> >
> > > I'm hitting an annoying bug in kernel 2.6.11.5
> > >
> > > Every time I _reboot_ (warmstart) my pc my two network cards won't get
> > > recognized any longer.
> > >
> > > Following error message appears on my screen:
> > >
> > > PCI: Enabling device 0000:00:0b.0 (0000 -> 0003)
> > > ACPI: PCI interrupt 0000:00:0b.0[A] -> GSI 19 (level, low) -> IRQ 19
> > > 3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
> > > 0000:00:0b.0: 3Com PCI 3c905B Cyclone 100baseTx at 0x1000. Vers LK1.1.19
> > > PCI: Setting latency timer of device 0000:00:0b.0 to 64
> > > *** EEPROM MAC address is invalid.
> > > 3c59x: vortex_probe1 fails.  Returns -22
> > > 3c59x: probe of 0000:00:0b.0 failed with error -22
> > > PCI: Enabling device 0000:00:0d.0 (0000 -> 0003)
> > > ACPI: PCI interrupt 0000:00:0d.0[A] -> GSI 19 (level, low) -> IRQ 19
> > > 0000:00:0d.0: 3Com PCI 3c905B Cyclone 100baseTx at 0x1080. Vers LK1.1.19
> > > PCI: Setting latency timer of device 0000:00:0d.0 to 64
> > > *** EEPROM MAC address is invalid.
> > > 3c59x: vortex_probe1 fails.  Returns -22
> > > 3c59x: probe of 0000:00:0d.0 failed with error -22
> > >
> > > This doesn't happen with older kernels (especially with 2.6.10) and so
> > > I've done a binary search and narrowed it down to 2.6.11-rc5 where it
> > > first hits me.
> > >
> > > My config, lspci output and the dmesg output of the working and non-working
> > > version can be found at [1]
> > >
> > > Feel free to ask if any information is missing or if I am supposed to try
> > > a patch.
> >
> > Thanks for doing the bsearch - it helps.
> >
> > There were no driver changes between 2.6.11-rc4 and 2.6.11-rc5.
> >
> > The only PCI change I see is
> >
> > --- drivers/pci/pci.c   22 Jan 2005 03:20:37 -0000      1.71
> > +++ drivers/pci/pci.c   24 Feb 2005 18:02:37 -0000      1.72
> > @@ -268,7 +268,7 @@
> >                return -EIO; 
> >
> >        pci_read_config_word(dev,pm + PCI_PM_PMC,&pmc);
> > -       if ((pmc & PCI_PM_CAP_VER_MASK) != 2) {
> > +       if ((pmc & PCI_PM_CAP_VER_MASK) > 2) {
> >                printk(KERN_DEBUG
> >                       "PCI: %s has unsupported PM cap regs version (%u)\n",
> >                       dev->slot_name, pmc & PCI_PM_CAP_VER_MASK);
> >
> > and you're not getting that message (are you?)
>
>
> Reverting the above patch solved it.

A gentoo user also reported this, but according to the bug report, this 
happens on every bootup (as opposed to only every warm boot)

http://bugs.gentoo.org/87142

I asked him to try reverting the patch shown above and that helped his 
situation too.

What's next towards getting this fixed for real?

Daniel
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