linux-kernel - Re: [PATCH 03/23] printk: Move braille console support into separate braille.[ch] files

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Message-ID: <50895B75.2010102@wwwdotorg.org>
Date:	Thu, 25 Oct 2012 09:32:05 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Joe Perches <joe@...ches.com>
CC:	Ming Lei <tom.leiming@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Kay Sievers <kay@...y.org>,
	Samuel Thibault <samuel.thibault@...-lyon.org>
Subject: Re: [PATCH 03/23] printk: Move braille console support into separate
 braille.[ch] files

On 10/24/2012 06:31 PM, Joe Perches wrote:
> On Wed, 2012-10-24 at 18:12 -0600, Stephen Warren wrote:
>> On 10/17/2012 12:06 AM, Joe Perches wrote:
>>> Create files with prototypes and static inlines for braille
>>> support.  Make braille_console functions return 1 on success.
>>
>> Joe,
>>
>> Between next-20121022 and next-20121023, the serial console (on the ARM
>> SoC Tegra at least) stopped working. The issue bisects down to this
>> commit. I haven't had a chance to investigate why yet, I just finished
>> bisected.
>>
>> earlyprintk over the same UART works. Once the system has booted, a few
>> late kernel messages do appear, and then getty/login over the UART
>> works. So, it's just the printk messages that disappeared.
>>
>> In case it's relevant, my command-line is:
>>
>> console=ttyS0,115200n8 loglevel=8 rootwait rw earlyprintk
>> root=PARTUUID=b2f82cda-2535-4779-b467-094a210fbae7
>>
>> I'll continue to investigate further tomorrow, but just wanted to give
>> you a heads-up in case you could immediately see anything obvious in the
>> code.
> 
> Hi Stephen.
> 
> Thanks, I appreciate the heads-up.  This should be solved
> by Ming Lei's patch (which I've incorporated into a V2
> series I will post shortly).
> 
> https://lkml.org/lkml/2012/10/23/307

Thanks. I can confirmed that patch does fix my issue.
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