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    SubjectRe: [linux-usb-devel] 2.6.0-test4 - PL2303 OOPS - see also 2.4.22: OOPS on disconnect PL2303 adapter
    Date
    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

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