Date: Thu, 05 Feb 2009 01:31:01 +0300 From: Vladimir Grebenschikov <vova@fbsd.ru> To: "M. Warner Losh" <imp@bsdimp.com> Cc: usb@freebsd.org, freebsd-current@freebsd.org, hselasky@c2i.net Subject: Re: USB2 - umass problem Message-ID: <1233786661.2821.5.camel@localhost> In-Reply-To: <20090204.085606.1630229139.imp@bsdimp.com> References: <1233734352.1767.55.camel@localhost> <200902041044.27663.hselasky@c2i.net> <20090204.085606.1630229139.imp@bsdimp.com>
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On Wed, 2009-02-04 at 08:56 -0700, M. Warner Losh wrote: > In message: <200902041044.27663.hselasky@c2i.net> > Hans Petter Selasky <hselasky@c2i.net> writes: > : Hi, > : > : On Wednesday 04 February 2009, Vladimir Grebenschikov wrote: > : > Hi > : > > : > > : > 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... . > > Generally, we try not to change the details of how a device attaches > /dev entries from release to release. Why the change? > > Also to Vladimir, Are you sure that the 'u' devices are created with > the USB modem? They should only be created for uart devices... Yes, it is uart. > Warner -- Vladimir B. Grebenschikov vova@fbsd.ru
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