From: Michael Frank <mhf@linuxmail.org>
To: Jan-Benedict Glaw <jbglaw@lug-owl.de>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] 2.6.0-test4 - PL2303 OOPS - see also 2.4.22: OOPS on disconnect PL2303 adapter
Date: Sat, 6 Sep 2003 15:55:46 +0800 [thread overview]
Message-ID: <200309061555.47065.mhf@linuxmail.org> (raw)
In-Reply-To: <20030906073814.GE14376@lug-owl.de>
On Saturday 06 September 2003 15:38, Jan-Benedict Glaw wrote:
> On Fri, 2003-09-05 16:08:52 -0700, Greg KH <greg@kroah.com>
> wrote in message <20030905230852.GA18196@kroah.com>:
> > On Wed, Sep 03, 2003 at 02:32:16PM +0800, Michael Frank wrote:
> > > On Wednesday 03 September 2003 07:52, Greg KH wrote:
> > > Besides it just stopping without obvious reason:
> > >
> > > 1) It does not like when something is typed on cu and not received by the serial port side
> > > connected to PL2303 (CTS low). It tends to hang and the trouble starts....
> > >
> > > Sep 3 12:52:15 mhfl2 kernel: ttyUSB0: 1 input overrun(s)
> > > Sep 3 12:54:30 mhfl2 last message repeated 2 times
> >
> > Hm, what is causing this?
> > That is probably why cu is getting confused, right?
>
> I've seen the input overrun message also (with the vanilla driver, not
> patched).
> It's effect is that the first bytes (maybe up to 100..300
> bytes) are scrambled. It's like accessing a serial link with a horribly
> wrong baud rate.
I have seen that too, but rarely. Most the time it hangs after the first
few hundred bytes.
>
> After a split-second, however, everything is okay and I start receiving
> valid NMEA data from my GPS receiver. For me, that's not much of a
> problem because nmea is checksum'ed and the bad bytes are ignored...
>
I have used PL2303 so far to grab serial console messages and did not
get in synch with cu after the overrun popped up.
Regards
Michael
next prev parent reply other threads:[~2003-09-06 9:43 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-01 17:39 2.6.0-test4 - PL2303 OOPS - see also 2.4.22: OOPS on disconnect PL2303 adapter Michael Frank
2003-09-01 18:53 ` Jan-Benedict Glaw
2003-09-02 16:43 ` [linux-usb-devel] " Greg KH
2003-09-02 22:13 ` Michael Frank
2003-09-02 23:52 ` Greg KH
2003-09-03 6:32 ` Michael Frank
2003-09-05 23:08 ` Greg KH
2003-09-06 2:31 ` Michael Frank
2003-09-06 5:48 ` Greg KH
2003-09-06 8:01 ` Michael Frank
2003-09-06 7:38 ` Jan-Benedict Glaw
2003-09-06 7:55 ` Michael Frank [this message]
2003-09-06 10:55 ` Jan-Benedict Glaw
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