From: "Stuart MacDonald" <stuartm@connecttech.com>
To: <Tim_T_Murphy@Dell.com>, <linux-kernel@vger.kernel.org>
Subject: RE: [2.6.10-bk8] [SERIAL] dropping chars when > 512
Date: Thu, 6 Jan 2005 12:02:18 -0500
Organization: Connect Tech Inc.
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From: Tim_T_Murphy@Dell.com [mailto:Tim_T_Murphy@Dell.com] 
> Nope, not a typo.
> I'm no expert, but i thought 'status' shows the LSR when an interrupt
> occurs, and LSR = 1 indicates 'data available', while LSR = 
> 60 indicates
> transmitter status (40 = THR empty, 20 = THR + shift register empty)?
> so status = 1 indicates an interrupt occurs while transmitter is busy?

That's what I get for not checking the code first. You are correct;
that is exactly what's going on. It shouldn't be a problem.

> I think this is related to tty flip buffer full (size = 512), and no
> low_latency setting (which, if set, hangs the 2.6 SMP 
> kernel).  but i'm
> not expert enough with serial to know a fix.

That is possible; I'm not familiar with the 2.6 drivers yet so I can't
be of more help.

..Stu

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