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Date: Mon, 29 Sep 2008 08:07:13 +0400
From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
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To: Bruce Cran <bruce@cran.org.uk>
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Cc: freebsd-hackers@freebsd.org, Poul-Henning Kamp <phk@phk.freebsd.dk>,
	Pegasus McCleaft <ken@hercules.mthelicon.com>
Subject: Re: atacontrol broken in 7.1-PR
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Bruce Cran wrote:
> I'm also seeing this problem on my amd64 7.1-PRERELEASE system:
> 
>> atacontrol list
> ATA channel 0:
>     Master: acd0 <HL-DT-ST DVD+/-RW GSA-T11N/A102> ATA/ATAPI revision 5
>     Slave:       no device present
> atacontrol: ioctl(IOCATADEVICES): Device not configured
> 
> 
> I've attached the dmesg, and truss output from "atacontrol list".

This is known problem and it fixed in CURRENT.
You need to apply this patch:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sbin/atacontrol/atacontrol.c.diff?r1=1.47;r2=1.48

I cc'ed person, who commited this fix.
Hi, Poul-Henning, I think it should be MFCed before release.

-- 
WBR, Andrey V. Elsukov