Link up/down messages from 5200 ethernet driver

Jon Smirl jonsmirl at gmail.com
Thu Dec 6 16:43:04 EST 2007


On 12/6/07, Jon Smirl <jonsmirl at gmail.com> wrote:
> On 12/5/07, Grant Likely <grant.likely at secretlab.ca> wrote:
> > On 12/5/07, Jon Smirl <jonsmirl at gmail.com> wrote:
> > > Why does the fec5200 driver sometimes not print 'PHY' correctly?
> > >
> > > phyCORE-MPC5200B-tiny login: TؤV� f0003000:10 - Link is Down
> > > T�Y: f0003000:10 - Link is Up - 100/Full
> > > T�Y: f0003000:10 - Link is Down
> > > PHY: f0003000:10 - Link is Up - 100/Full
> >
> > Weird; that line comes from drivers/net/phy/phy.c in
> > phy_print_status(), and it's just a a pr_info statement.  I suppose it
> > might be a stack overrun, but I'd expect more severe symptoms if that
> > was the case.
> >
> > That *looks* like a serial stream corruption.  Is that the output of
> > your serial port?  Does dmesg show the same corruption?
>
> That's the serial port output.
> dmesg is ok.
>
> Nothing else I do can mess up the serial port.

Maybe the KERN_INFO prefix is sending out control characters that mess
up the serial output?

>
> >
> > Cheers,
> > g.
> >
> > --
> > Grant Likely, B.Sc., P.Eng.
> > Secret Lab Technologies Ltd.
> > grant.likely at secretlab.ca
> > (403) 399-0195
> >
>
>
> --
> Jon Smirl
> jonsmirl at gmail.com
>


-- 
Jon Smirl
jonsmirl at gmail.com


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