From: Tejun Heo <tj@kernel.org>
To: Robert Hancock <hancockrwd@gmail.com>
Cc: "Ortwin Glück" <odi@odi.ch>,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: ata link not reset properly
Date: Sat, 26 Jun 2010 10:03:40 +0200 [thread overview]
Message-ID: <4C25B45C.9080805@kernel.org> (raw)
In-Reply-To: <4C257CEE.2070309@gmail.com>
Hello,
On 06/26/2010 06:07 AM, Robert Hancock wrote:
> Ahh, ok, it's not sata_nv at all then, it's pata_amd. On the same chip,
> totally different controller though.
>
> PATA doesn't normally use hard-resets as a means of error recovery -
> that would mean hitting the RESET line, which I don't think most
> controllers can do on software command (it usually only gets asserted on
> power up or hitting the reset button), unlike on SATA where there's a
> defined way to trigger a COMRESET which is mostly equivalent. Also, that
> resets both devices on the channel, unlike soft reset which is specific
> to one device.
Yeah, if it's pata_amd and SRST isn't recovering the device, there
isn't much else to do. :-(
Thanks.
--
tejun
next prev parent reply other threads:[~2010-06-26 8:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 17:08 ata link not reset properly Ortwin Glück
2010-06-23 17:28 ` Tejun Heo
2010-06-23 17:31 ` Tejun Heo
2010-06-24 7:13 ` Ortwin Glück
2010-06-25 15:19 ` Tejun Heo
2010-06-25 18:00 ` Ortwin Glück
2010-06-26 4:07 ` Robert Hancock
2010-06-26 8:03 ` Tejun Heo [this message]
2010-06-26 9:00 ` Ortwin Glück
2010-06-27 18:27 ` Sergei Shtylyov
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