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From: Tilman Schmidt <tilman@imap.cc>
To: Lee Howard <faxguy@howardsilvan.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Robert Hancock <hancockr@shaw.ca>,
	linux-serial@vger.kernel.org, tytso@mit.edu,
	rmk@arm.linux.org.uk, linux-kernel@vger.kernel.org
Subject: Re: serial flow control appears broken
Date: Fri, 27 Jul 2007 15:45:54 +0200	[thread overview]
Message-ID: <46A9F712.70706@imap.cc> (raw)
In-Reply-To: <46A98845.8010806@howardsilvan.com>

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Lee Howard schrieb:
> 
> So, does this explain why I wouldn't have a problem at 115200 bps with 
> kernel 2.2.5 but why I do with 2.6.5 and 2.6.18?  Both hardware and 
> software flow control work fine with 2.2.5 (meaning I don't see any 
> error message and I don't have any data corruption), but neither works 
> to avoid the "kernel: ttyS1: 1 input overrun(s)" and consequent data 
> corruption issue in 2.6.5 nor 2.6.18.
> 
> Was there some associated application change in tty handling that needed 
> to occur between the 2.2 and 2.6 kernels to properly implement flow control?

Could this be related?

http://lkml.org/lkml/2007/7/18/245

Quote:
"I've recently found (using 2.6.21.4) that configuring a serial ports
(ST16654) which use the 8250 driver using setserial results in the
UART's FIFOs being disabled (unless you specify autoconfig)."

-- 
Tilman Schmidt                    E-Mail: tilman@imap.cc
Bonn, Germany
Diese Nachricht besteht zu 100% aus wiederverwerteten Bits.
Ungeöffnet mindestens haltbar bis: (siehe Rückseite)


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  parent reply	other threads:[~2007-07-27 13:45 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.Z6O0xFRT69zes0Mg+agt3Uiwux4@ifi.uio.no>
2007-07-26  7:20 ` serial flow control appears broken Robert Hancock
2007-07-26 16:08   ` Lee Howard
2007-07-26 16:31     ` Alan Cox
2007-07-27  5:53       ` Lee Howard
2007-07-27 11:47         ` Alan Cox
2007-07-27 17:36           ` Lee Howard
2007-07-27 13:45         ` Tilman Schmidt [this message]
2007-07-27 19:34           ` Paul Fulghum
2007-08-27 20:38             ` Paul Fulghum
2007-07-27 20:48             ` Lee Howard
2007-07-27 23:28               ` Paul Fulghum
2007-07-28  4:51                 ` Lee Howard
2007-07-28  9:18                   ` Russell King
2007-07-28 12:00                   ` Alan Cox
2007-07-28 15:39                     ` Lee Howard
2007-08-01 21:54                       ` Frantisek Rysanek
2007-07-28 16:41                   ` Ray Lee
2007-08-04 18:21                     ` Lee Howard
2007-08-04 22:07                       ` Paul Fulghum
2007-08-05  0:00                         ` Lee Howard
2007-08-05 14:52                           ` Paul Fulghum
2007-07-27 19:34           ` Paul Fulghum
2007-07-27 20:05           ` Lee Howard
2007-07-27 11:32     ` Maciej W. Rozycki
2007-07-27 17:11       ` Lee Howard
2007-07-27 17:41         ` Alan Cox
2007-07-27 17:53         ` Maciej W. Rozycki
2007-07-27 18:11           ` Lee Howard
2007-07-30  9:36             ` Maciej W. Rozycki
2007-07-27 18:22           ` Robert Hancock
2007-07-27 18:46             ` Paul Fulghum
2007-07-27 19:05             ` Paul Fulghum
2007-07-30  9:39               ` Maciej W. Rozycki
2007-07-27 19:14             ` Paul Fulghum
2007-07-28  9:28             ` Russell King
2007-07-30  9:45               ` Maciej W. Rozycki
2007-07-30  9:59                 ` Russell King
2007-08-02 14:57                 ` Mark Lord
2007-08-02 16:14                   ` Robert Hancock
2007-08-02 16:29                     ` Mark Lord
2007-08-02 16:40                       ` Robert Hancock
2007-08-02 17:13                       ` Alan Cox
2007-08-04 19:38                       ` Lee Howard
2007-08-02 16:57                     ` Alan Cox
2007-08-02 17:02                       ` Robert Hancock
2007-08-03  9:32                       ` Maciej W. Rozycki
2007-07-30  9:34             ` Maciej W. Rozycki
2007-08-04 18:19           ` Lee Howard
2007-07-26  1:52 Lee Howard
2007-07-26 12:34 ` Uwe Kleine-König
2007-07-26 12:34   ` Uwe Kleine-König
2007-07-26 16:28   ` Lee Howard
2007-07-26 16:28     ` Lee Howard
2007-07-26 16:41     ` Alan Cox
2007-07-27  6:17       ` Lee Howard
2007-07-27 11:56         ` Alan Cox
2007-07-27 18:00           ` Lee Howard
2007-07-26 15:51 ` Tosoni
2007-07-26 16:31   ` Lee Howard

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