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Date: Wed, 7 Mar 2001 18:48:53 +0100 (MET)
From: Pozsar Balazs <pozsy@sch.bme.hu>
To: James Stevenson <mistral@stev.org>
cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: tts/0: 1 input overrun(s)
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On Tue, 6 Mar 2001, James Stevenson wrote:
> with the serial port it has a buffer when it recives data the
> serial port buffer will fill up if data is not read quickly enough
> the buffer will overflow hence the 1 input overrun
>
> to fix it your could try to reduce the data rate to the serial port
> and what type of UART do you have in that port ?

I don't think this should be normal.
The relevant dmesg part:
Serial driver version 5.02 (2000-08-09) with MANY_PORTS SHARE_IRQ
SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A

I am using 115200.

Balazs Pozsar.

> >Hi all,
> >
> >I get the following message:
> > tts/0: 1 input overrun(s)
> >
> >each time while downloading pictures from my digital camera via ttyS0,
> >_and_ switching between an X session and textmode console.
> >(ie, 1 switch -> 1 error)
> >
> >This is with 2.4.1. I don't remember getting these with 2.2
> >This error also means a transmit error (gphoto reports error and a packet
> >has to be retransferred.)
> >
> >What is this? Why I'm getting it? What should I do? :)
> >
> >bye,
> >Balazs Pozsar.
> >
> >-
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>
>

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