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Date:	Fri, 26 Oct 2012 13:25:34 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arend van Spriel <arend@...adcom.com>
Cc:	Ingo Molnar <mingo@...hat.com>, Tejun Heo <tj@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: lockdep info message

On Fri, 2012-10-26 at 12:15 +0200, Arend van Spriel wrote:
> Hi Peter and/or Ingo,
> 
> I am working on a driver (brcmfmac) and when unloading it or unplugging 
> the device I get this info message (see below) upon calling 
> cancel_work_sync(). Just wondering if there is something I need to do in 
> the driver or should it be done in workqueue code.

Your driver, as that's the one allocating the struct work_struct thingy.

You've either failed to use INIT_WORK() or need to use
INIT_WORK_ONSTACK() if that's appropriate. It looks like you could have
used DECLARE*_WORK inside a function or something similar.

Anyway, without the driver code present I can't really say much more.
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