From owner-freebsd-usb@FreeBSD.ORG  Mon Jun 12 21:15:17 2006
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From: Hans Petter Selasky <hselasky@c2i.net>
To: Ulrich Spoerlein <uspoerlein@gmail.com>
Date: Mon, 12 Jun 2006 23:15:19 +0200
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Cc: freebsd-usb@freebsd.org
Subject: Re: uplcom.c
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On Monday 12 June 2006 21:39, Ulrich Spoerlein wrote:
> Hans Petter Selasky wrote:
> > Hi,
> >
> > I am currently working on converting "uplcom.c" to my new USB API. In
> > that regard I have a question: Is anyone using "option
> > UPLCOM_INTR_INTERVAL" or "sysctl hw.usb.uplcom.interval", or can this be
> > left to the default interrupt interval?
> >
> > /*
> >  * The "uplcom.c" driver supports several USB-to-RS232 serial adapters
> >  * driven by Prolific PL-2303, PL-2303X and probably PL-2303HX
> > USB-to-RS232 * bridge chip.  The adapters are sold under many different
> > brand * names.
> >  */
>
> I have such a device and am using it. The question is, what is that
> option supposed to do?

It sets how often the USB host controller should query the USB device for an 
interrupt packet.

Could you have done some testing of the new driver? Maybe not right now, but 
in one or two weeks. I will provide you with a nice tarball, that you can 
install on FreeBSD 6/7.

--HPS