linux-kernel - Re: [BUG] 2.6.30-rc4 hid bluetooth not working

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Date:	Thu, 30 Apr 2009 15:34:14 -0700
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	Marc Pignat <Marc.Pignat@...s.ch>,
	Roger Quadros <ext-roger.quadros@...ia.com>,
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG] 2.6.30-rc4 hid bluetooth not working

Hi Jiri,

> > > > My bluetooth keyboard is not working any more in rc4, but was 
> > > > working in rc3. Here is the dmesg output, triggered by the first key 
> > > > press on the keyboard, fortunately, this is 100% reproductible (once 
> > > > per boot).
> > > Does reverting f3784d834c7 fix the problem?
> > we have seen a similar report where reverting f3784d834c7 didn't fix it. 
> > And I don't see anything wrong with that patch. Did something important 
> > got changed in the work queue code that I am missing?
> 
> Calling flush() from work->func() is not safe. That's what the WARN_ON() 
> in flush_cpu_workqueue() is there for, right?

I don't know since this got changed in 2.6.30-rc1. I do have this kernel
running and I have seen the WARN_ON() only once. However I have never
seen a NULL pointer because of this patch.

Regards

Marcel


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