usb/82660: EHCI: I/O stuck in state 'physrd'/panic

Stefan Walter sw at gegenunendlich.de
Thu Jun 30 16:28:30 GMT 2005


Hans Petter Selasky, 30.06.05, 14:08h CEST:

> > > Try "sysctl hw.usb.umass.debug=15" while you have the my driver in the
> > > kernel, hence it has got debugging flags enabled by default. Else you
> > > need to add something like "option USB_DEBUG" to your kernel config file.
> > > I'm not sure if you can compile the modules with debugging support unless
> > > you use my USB driver.
> > >
> > > See if any errors show up.
> > >
> > > Then try "sysctl hw.usb.debug=15". See if any errors appear.
> >
> > I tried that with the official FreeBSD driver for now (USB_DEBUG and ehci
> > in the kernel).
> >
> > hw.usb.umass.debug=15 didn't show me any messages during the transfer,
> > only when (dis)connecting the device. hw.usb.debug=15 dumped a lot of
> > output. It's available here:
> 
> Try "sysctl hw.usb.umass.debug=-1" while "hw.usb.debug=0".

I did that. I don't know enough about the USB stuff to interpret the
output myself, so here it is:
http://www.gegenunendlich.de/stuff/umass-messages-until-pullout.bz2. 

> If you are loading umass as a module, you need to add
[...snip...]

All USB stuff is compiled into the kernel.

Regards,
Stefan
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