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From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Tejun Heo <tj@kernel.org>
Subject: Re: [Regression, 2.6.36-rc1] ath9k resume problem on Acer Ferrari One
Date: Thu, 19 Aug 2010 16:05:07 +0200
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Cc: Luis Rodriguez <lrodriguez@atheros.com>,
        LKML <linux-kernel@vger.kernel.org>,
        "Linux-pm mailing list" <linux-pm@lists.linux-foundation.org>,
        linux-wireless@vger.kernel.org, ath9k-devel@venema.h4ckr.net,
        Maciej Rutecki <maciej.rutecki@gmail.com>
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On Thursday, August 19, 2010, Tejun Heo wrote:
> Hello, Rafael.
> 
> On 08/19/2010 12:01 AM, Rafael J. Wysocki wrote:
> > While testing 2.6.36-rc1 (with a couple of fixes on top) I noticed
> > that the ath9k driver didn't work after resume from suspend to RAM.
> > An attempt to unload the driver using rmmod caused the BUG_ON() in
> > kernel/workqueue.c:2844 to trigger.
> 
> That BUG_ON() triggers if destroy_workqueue() is called while work
> items are still pending on the workqueue.  Can you please trigger
> stack traces after resume and post it?

Do you mean sysrq-t?

Rafael