linux-kernel - [stable-request] [Bisected] Kernel 3.8 hangs on boot

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Message-ID: <51274FFD.4050509@suse.cz>
Date:	Fri, 22 Feb 2013 12:01:17 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	George Spelvin <linux@...izon.com>
CC:	ojab <ojab@...b.ru>, stable <stable@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [stable-request] [Bisected] Kernel 3.8 hangs on boot

On 02/22/2013 10:53 AM, ojab wrote:
> On 22.02.2013 13:25, Jiri Slaby wrote:
>> On 02/22/2013 07:32 AM, ojab wrote:
>>
>> Ideally with description of tha hang. Are there any messages (if you
>> disable splash and enable debug)? Do keyboard LEDs blink?
>>
>>
>> Especially architecture. Then do you have serial ports, some GSM devices
>> or GPS?
> 
> It's x86_64 machine and I have GPS w/ PPS (Garmin 18x LVC) connected via
> serial, without it kernel boots/works fine. Also no issues with GPS
> connected, but PPS disabled (by removing pps_core.ko module).
> If I'm connecting GPS w/ PPS to already booted machine — cursor on the
> display stops blinking and I cannot input anything, but I still can
> switch between VTs using Ctrl-Fx and keyboard LEDs are blinking when I'm
> pressing Num/Caps Lock keys.

Ok, you have a problem fixed by this commit:
commit 03a7ffe4e542310838bac70ef85acc17536b6d7c
Author: George Spelvin <linux@...izon.com>
Date:   Sun Feb 10 04:41:56 2013 -0500

    pps: Use pps_lookup_dev to reduce ldisc coupling

I think this should go to stable-3.8 with its prerequisity:

commit 513b032c98b4b9414aa4e9b4a315cb1bf0380101
Author: George Spelvin <linux@...izon.com>
Date:   Sun Feb 10 04:08:32 2013 -0500

    pps: Add pps_lookup_dev() function

George?

thanks,
-- 
js
suse labs
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