From: Ivan Kuten <ivan.kuten@promwad.com>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>,
Andrew Victor <andrew@sanpeople.com>,
Nicolas Ferre <nicolas.ferre@rfo.atmel.com>,
Patrice Vilchez <patrice.vilchez@rfo.atmel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] atmel_serial: Fix break handling
Date: Tue, 19 Jun 2007 13:36:05 +0300 [thread overview]
Message-ID: <20070619133605.30e7655e@newbox> (raw)
In-Reply-To: <20070618103353.GB10387@flint.arm.linux.org.uk>
On Mon, 18 Jun 2007 11:33:54 +0100
Russell King wrote:
> On Mon, Jun 18, 2007 at 01:21:21PM +0300, Ivan Kuten wrote:
> > Hi Haavard,
> >
> > I tried /dev/ttyAT3, break appeared but not the way I expected, after:
> > stty -F /dev/ttyAT3 brkint I get:
> >
> > cat /proc/tty/driver/atmel_serial
> > serinfo:1.0 driver revision:
> > 0: uart:ATMEL_SERIAL mmio:0xFEFFF200 irq:1 tx:0 rx:0 CTS|DSR|CD|RI
> > 1: uart:ATMEL_SERIAL mmio:0xFFFC0000 irq:6 tx:0 rx:0 CTS|DSR|CD|RI
> > 2: uart:ATMEL_SERIAL mmio:0xFFFC4000 irq:7 tx:0 rx:0 RI
> > 3: uart:ATMEL_SERIAL mmio:0xFFFC8000 irq:8 tx:1530 rx:115 brk:1 RTS|DTR|DSR|CD|RI
> > 4: uart:ATMEL_SERIAL mmio:0xFFFCC000 irq:9 tx:0 rx:0 DSR|CD|RI
> >
> > brk is 1 not depending on how many breaks was sent. May be I missunderstood
> > "break" meaning?
> > I use from minicom: Main Functions : send break.........F .
>
> Note that if you want to use magic sysrq on ttyAT3, you need the kernel
> console on ttyAT3. Since you successfully received one break event on
> ttyAT3, the next character should have caused a sysrq event.
>
Yes, I added to kernel command line "console=ttyAT3,115200" .
I do not receive brk event via minicom, break counter sets to 1 only if I issue
this command: stty -F /dev/ttyAT3 brkint
Anyway I try to debug further to locate the problem.
BR,
Ivan
next prev parent reply other threads:[~2007-06-19 10:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-31 19:31 [PATCH] atmel_serial: Fix break handling Haavard Skinnemoen
2007-06-05 11:07 ` Ivan Kuten
2007-06-05 11:23 ` Haavard Skinnemoen
2007-06-18 10:21 ` Ivan Kuten
2007-06-18 10:33 ` Russell King
2007-06-19 10:36 ` Ivan Kuten [this message]
2007-06-19 16:58 ` Russell King
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