From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Hogan <james.hogan@imgtec.com>
Subject: Re: Tegra 30 System hangs because of commit "pinctrl: move subsystem
 mutex to pinctrl_dev struct"
Date: Mon, 29 Apr 2013 20:48:36 +0100
Message-ID: <517ECE94.4020806@imgtec.com>
References: <CAK5ve-KXdS8az=Gtja-mF=Z3_EeZVA7bLYSU0EE2mf5bHmSUKw@mail.gmail.com>
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To: Bryan Wu <cooloney@gmail.com>
Cc: patrice.chotard@st.com, Linus Walleij <linus.walleij@linaro.org>, Stephen Warren <swarren@wwwdotorg.org>, "linux-next@vger.kernel.org" <linux-next@vger.kernel.org>

On 29/04/13 19:15, Bryan Wu wrote:
> Hi Patrice and Linus,
> 
> I'm running linux-next on my Tegra 30 system everyday. But since
> next-20130426 release, the linux-next kernel will hang on my Tegra 30
> boards like Cardhu and Beaver.
> 
> After some bisect and comparing to next-20130424, I found the commit
> "pinctrl: move subsystem mutex to pinctrl_dev struct" introduced this
> issue. If I simply revert this patch in next-20130429, system boots up
> as before.
> 
> Could you please help to check this?

I spent a while tracking this one down today too, then found it was
already fixed. See the patch "[PATCH, for-next] pinctrl: fix mutex
deadlock in get_pinctrl_dev_from_of_node()" from Daniel Mack.

Cheers
James