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Date: Tue, 20 May 2008 11:21:20 -0500
From: Scott Wood <scottwood@freescale.com>
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To: Rune Torgersen <runet@innovsys.com>
CC: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
       netdev@vger.kernel.org
Subject: Re: Oops in fs_enet driver with preempt-rt
References: <DCEAAC0833DD314AB0B58112AD99B93B046E728C@ismail.innsys.innovsys.com> <DCEAAC0833DD314AB0B58112AD99B93B046E72C3@ismail.innsys.innovsys.com> <4832F139.1020502@freescale.com> <DCEAAC0833DD314AB0B58112AD99B93B046E73C6@ismail.innsys.innovsys.com>
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Rune Torgersen wrote:
> Hmm.... ttyCPM1 output seems to be kinda garbled... Any ideas?
> Incomplete locking between printk and userland use of ttyCPM1 as
> console?

s/incomplete/nonexistent/ :-P

Try acquiring port->lock in cpm_uart_console_write.

-Scott