Date: Fri, 30 Nov 2007 21:25:41 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Mark Lord <lkml@rtr.ca>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Phillip Susi <psusi@cfl.rr.com>,
       Tejun Heo <htejun@gmail.com>, noah <noah123@gmail.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-ide@vger.kernel.org
Subject: Re: Possibly SATA related freeze killed networking and RAID
Message-ID: <20071130202541.GA1677@elf.ucw.cz>
References: <d00698fb0711201109m23ff096eiabeb22c8f9a917dc@mail.gmail.com> <20071120220512.46b9e975@the-village.bc.nu> <20071126120649.GC4701@ucw.cz> <474CCA82.7030000@gmail.com> <474F3A4B.3080304@cfl.rr.com> <20071130131344.07b75f45@the-village.bc.nu> <20071126075517.GA4141@ucw.cz> <475025A7.9010107@rtr.ca>
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On Fri 2007-11-30 10:00:55, Mark Lord wrote:
> Pavel Machek wrote:
>> On Fri 2007-11-30 13:13:44, Alan Cox wrote:
>>>> Why does a single spurious interrupt cause it to be shut down?  I can 
>>> It doesn't.
>>>
>>>> see if the interrupt is stuck on and keeps interrupting constantly, but 
>>>> if it's just the occasional spurious interrupt, why not just ignore it 
>>>> and move on?
>>> The interrupt is usually level triggered so it continues to create
>>> interrupts until you silence it. The thresholds are about 10,000
>>> interrupt events and on newer kernels we also reset the count if we don't
>>> see any for a while. That works for most stuff except the thinkpad
>>> bluetooth problem.
>> Which is confirmed hw problem now, btw.
> ...
>
> What problem is that, exactly?

Spurious interrupt, interrupt link is disabled after ~15 minutes. It
seems pretty unique to t61.

> My Dell has an internal USB BT adapter that briefly appears
> and then disappears again on resume (or stays if I have "enabled" it
> via the BIOS key).
>
> I wonder if that has anything to do with the (new in) 2.6.23 pauses
> that machine has on resume (about every 10th time).

No idea, but t61 problem seems different.
									Pavel

-- 
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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