From owner-freebsd-hackers  Mon Aug 26 16: 1:47 2002
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Message-ID: <3D6AB319.791060CF@mindspring.com>
Date: Mon, 26 Aug 2002 16:00:41 -0700
From: Terry Lambert <tlambert2@mindspring.com>
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To: Mikko =?iso-8859-1?Q?Ty=F6l=E4j=E4rvi?= <mikko@dynas.se>
Cc: John Nielsen <john@jnielsen.net>, Marco Molteni <molter@tin.it>,
	freebsd-hackers@freebsd.org
Subject: Re: USB support for new HP printers?
References: <20020826082508.X356-100000@atlas.home>
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Mikko Ty=F6l=E4j=E4rvi wrote:
> > I'm pretty sure that bidirectional I/O is supported, or there
> > would be no network devices.
> =

> [...]
> =

> Though the USB stack handles bi-directional communication, ulpt does no=
t:
> =

> Static struct cdevsw ulpt_cdevsw =3D {
>        /* open */    ulptopen,
>        /* close */   ulptclose,
>        /* read */    noread,            <---- !
> ...
> =

> In -current, an input routine has been added, but all it does is
> discard any data that comes from the printer.

That should be trivial to correct, for anyone who wants to use
their printer, and requires bidirecitonal I/O...

But I stand corrected.

-- Terry

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