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

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Message-ID: <4A1B770E.9090508@kernel.org>
Date:	Tue, 26 May 2009 13:58:54 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Niel Lambrechts <niel.lambrechts@...il.com>,
	"linux.kernel" <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.29 regression: ATA bus errors on resume

Alan Cox wrote:
>> 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.  :-(
> 
> I'm just wondering what happens on a resume if a phy change event is seen
> by the phy before or during the time registers (such as the port mappings
> on an ICH) are being restored (or not restored even). That seems to be one
> way you could get an event on the wrong port.

It doesn't really matter.  Before the ports are resumed, all such
events are ignored.

Thanks.

-- 
tejun
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