From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: hs@denx.de, Steve deRosier <derosier@gmail.com>,
Linux Embedded <linux-embedded@vger.kernel.org>,
Wolfgang Denk <wd@denx.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: GPIO triggers kernel reboot
Date: Mon, 27 Jan 2014 09:25:01 +0100 [thread overview]
Message-ID: <CAMuHMdX-sRhwddcvrS8KSO9hTMc94PyAhaBTef7rckwvnL-OiQ@mail.gmail.com> (raw)
In-Reply-To: <8761p5hmni.fsf@lebrac.rtp-net.org>
On Mon, Jan 27, 2014 at 9:08 AM, Arnaud Patard
<arnaud.patard@rtp-net.org> wrote:
>>> It's certainly possible, and it's also easily done from user-space.
>>> Something like this is more policy than function. It's also a potential
>>> security issue. As such I'd expect it highly unlikely that the kernel
>>> maintainers would allow it to go upstream. Give it a try though.
>>
>> Ok, thats what I also think ...
>>
>>> I'd approach this from user-space. Add in the gpio-keys driver and use the
>>> input-event-daemon to trigger a reboot. Super easy.
>>
>> Yes, that was also my suggestion, but is there a way to do this without
>> user space usage in a generic way?
>
> I think that you can register an input handler for that. iirc, there was
> a driver doing something similar for apm.
According to Documentation/sysctl/kernel.txt, the default for the
"ctrl-alt-del" input is to just reboot.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
prev parent reply other threads:[~2014-01-27 8:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-25 16:02 GPIO triggers kernel reboot Heiko Schocher
2014-01-25 19:11 ` Mehaffey, John
2014-01-25 20:24 ` Mehaffey, John
2014-01-27 6:17 ` Heiko Schocher
2014-01-26 2:54 ` Florian Fainelli
[not found] ` <CALLGbRKK_ZcOB6nAiV67njrphXMQXN7Y2s81n5k3PWoSVrsrUw@mail.gmail.com>
2014-01-27 6:22 ` Heiko Schocher
2014-01-27 8:08 ` Arnaud Patard
2014-01-27 8:25 ` Geert Uytterhoeven [this message]
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