yongari nfe problems
rhurlin at gwdg.de
Wed Apr 4 19:32:16 UTC 2007
Pyun YongHyeon schrieb:
> On Tue, Apr 03, 2007 at 06:49:42PM +0200, Rainer Hurling wrote:
> > In "man ehci(4)" I found:
> > -------
> > BUGS
> > The driver is not finished and is quite buggy.
> > There is currently no support for isochronous transfers.
> > -------
> > Possibly this could cause the observed "dropouts" of nfe0 from a few
> > seconds till several minutes?
> I'm not familiar with ehci(4) but I think it has nothing to do with
> missing Tx completion interrupts observed on nfe(4).
> > Is there a knob or option in driver nfe(4) I can use to try classical
> > polling or any 'lower' mode of operation?
> Add 'options DEVICE_POLLING' into kernel configuration file and
> rebuild your kernel. Use ifconfig(8) to enable/disable polling(4)
> See polling(4) for more detailed description and tuning parameters.
Thank you for this hint. I compiled my kernel with 'options
DEVICE_POLLING' and reboot.
For the first four hours I get no new watchdog timeouts. But then,
without heavy load and without using usb devices, I get many timeouts.
Obiously nfe(4) does not support this polling feature? Or we are looking
at the wrong side ...
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