linux-kernel - Re: oops with USB serial irda adapter

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Date:	Thu, 21 Jun 2007 00:17:50 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: oops with USB serial irda adapter

On Wed, 20 Jun 2007 18:16:47 -0400
Chuck Ebbert <cebbert@...hat.com> wrote:

> [https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=241598]
> 
> Oops happens here in kernel 2.6.20.11:
> drivers/usb/serial/ir-usb.c, line 557:
> 
>                 /* Notify the tty driver that the termios have changed. */
>                 port->tty->ldisc.set_termios(port->tty, NULL);
> 
> (ldisc.set_termios is NULL)

Yeah the driver is full of bugs - its also broken for the way its
set_termios tries to play 'guess it the properties have changed' and gets
speed checks wrong, how it snoops the baud bits and some other stuff it
does.

If you make it look like a real serial driver it ought to work fine. If
you've got hardware I can send you test patches ?
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