From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Date: Sat, 30 Jan 2010 18:34:56 +0000
Subject: Re: Multi-serial USB Device
Message-Id: <20100130183456.GA28345@kroah.com>
List-Id: <linux-hotplug.vger.kernel.org>
References: <7a09e2151001301005m29daf8c8ndad88969d63918a4@mail.gmail.com>
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To: linux-hotplug@vger.kernel.org

On Sat, Jan 30, 2010 at 01:05:27PM -0500, Paul Dugas wrote:
> First, please point me where I should be asking if this is not the
> place.? Thanks.
> 
> I've got a number of USB devices I need to connect to a data-logging
> machine.? Each device presents as 3 USB serial ports which are
> properly recognized and setup as ttyUSB[0-2] once I added the right
> vendor and product numbers to the module loader configs.? When I
> connect the second device, I get ttyUSB[3-5].? I've been able to setup
> udev rules that recognize the serial numbers for each of the devices
> and can setup symlinks; i.e. ttyLogger1USB[0-2] -> ttyUSB?.
> Something like so...
> 
>     KERNEL="ttyUSB*", SYSFS{serial}="111", SYMLINK+="ttyLogger1USB%n"
>     KERNEL="ttyUSB*", SYSFS{serial}="222", SYMLINK+="ttyLogger2USB%n"
>     KERNEL="ttyUSB*", SYSFS{serial}="333", SYMLINK+="ttyLogger3USB%n"

Have you looked at the links in /dev/serial/?  that should work for what
you are trying to accomplish.

thanks,

greg k-h