From: Tejun Heo <tj@kernel.org>
To: Robert Hancock <hancockr@shaw.ca>
Cc: Tony Battersby <tonyb@cybernetics.com>,
Jeff Garzik <jgarzik@pobox.com>,
IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: AHCI problem with hotplug
Date: Tue, 30 Dec 2008 09:38:54 +0900 [thread overview]
Message-ID: <49596D9E.3040904@kernel.org> (raw)
In-Reply-To: <49591710.7040102@shaw.ca>
Robert Hancock wrote:
> Tony Battersby wrote:
>>> The BIOS could be tristating the ports. Does it work if you issue
>>> manual rescan (echo - - - > /sys/class/scsi_host/hostN/scan)?
>>>
>> No luck. I get:
>>
>> ata1: hard resetting link
>> ata1: SATA link down (SStatus 0 SControl 0)
>> ata1: EH complete
>>
>> And the drive isn't seen.
>
> Well, if the controller reports link down there likely isn't much the
> kernel can do about it. I assume that ata1 is in fact where that drive
> gets detected if it's plugged in at boot - you could try all the other
> hosts to be sure..
This is consistent with the BIOS tristating those ports. I don't
remember the name of the register. I'll look it up later.
Thanks.
--
tejun
next prev parent reply other threads:[~2008-12-30 0:39 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-11 20:32 AHCI problem with hotplug Tony Battersby
2008-12-12 16:03 ` Alan Cox
2008-12-29 8:17 ` Tejun Heo
2008-12-29 14:51 ` Tony Battersby
2008-12-29 18:29 ` Robert Hancock
2008-12-30 0:38 ` Tejun Heo [this message]
2009-01-02 3:12 ` Tejun Heo
2009-01-07 15:39 ` Tony Battersby
2009-01-08 2:06 ` Tejun Heo
2009-01-08 14:20 ` Tony Battersby
2009-01-09 0:13 ` Robert Hancock
2009-01-09 16:30 ` Tony Battersby
2009-01-14 6:33 ` Tejun Heo
2009-01-14 21:38 ` Tony Battersby
2009-01-15 1:31 ` Tejun Heo
2009-01-15 4:42 ` Robert Hancock
2009-01-20 22:56 ` Tony Battersby
2008-12-30 13:41 ` raz ben yehuda
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