USB2 - umass problem

Vladimir Grebenschikov vova at
Wed Feb 4 01:58:09 PST 2009

On Wed, 2009-02-04 at 10:44 +0100, Hans Petter Selasky wrote:

> > By some reason devfs semantic was changed:
> > Instead of /dev/cuaU0.[0-2] and /dev/ttyU0.[0-2], I've get
> > /dev/cuaU[0-2] /dev/ttyU[0-2] and! /dev/cuau1 /dev/ttyu1
> > What is reason for such change (additional port with lowercase 'u' and
> > U[0-2] instead of more logical U0.[0-2]) ?
> It is because we are attaching drivers per interface instead of per device. A 
> new modem unit is allocated every time we find a modem, simply put. If the 
> modem has multiple instances in an interface, /dev/cuaU0.[0...] will be 
> created. Else /dev/cuaU... .

What about /dev/cuau1 /dev/ttyu1 ?

Vladimir B. Grebenschikov
vova at

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