Message-ID: <508883D6.70706@wwwdotorg.org>
Date: Wed, 24 Oct 2012 18:12:06 -0600
From: Stephen Warren <swarren@wwwdotorg.org>
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To: Joe Perches <joe@perches.com>
CC: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
        Kay Sievers <kay@vrfy.org>,
        Samuel Thibault <samuel.thibault@ens-lyon.org>
Subject: Re: [PATCH 03/23] printk: Move braille console support into separate
 braille.[ch] files
References: <cover.1350449851.git.joe@perches.com> <592f6af296db3e82a392252b3a7c8a7b1020194d.1350449851.git.joe@perches.com>
In-Reply-To: <592f6af296db3e82a392252b3a7c8a7b1020194d.1350449851.git.joe@perches.com>
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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.
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