linux-kernel - Re: 2.6.29 regression: ATA bus errors on resume

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Message-ID: <4A19F006.3000303@kernel.org>
Date:	Mon, 25 May 2009 10:10:30 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Niel Lambrechts <niel.lambrechts@...il.com>
CC:	"linux.kernel" <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.29 regression: ATA bus errors on resume

Niel Lambrechts wrote:
> I notice that if I hibernate with a CD in the drive and then remove it
> as soon as I boot, I get a hard reset on the ata1 bus.
> 
> I'm not sure if this maybe plays a role in triggering the problem at
> times, perhaps it is entirely expected - but vim highlights it in red
> and to a "normal" user that is bad. :)
> 
> Maybe after applying your patch I should play around with this?

That isn't normal.  You're getting PHY event on ata1 if you do
something to the cdrom which is attached to ata2.  Something very
fishy is going on there.  Sounds like an electric or some sort of
interference problem but I'm not sure.  :-(

Thanks.

-- 
tejun
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