From: Tejun Heo <htejun@gmail.com>
To: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Jeff Garzik <jeff@garzik.org>,
linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 2
Date: Fri, 21 Sep 2007 12:19:00 +0900 [thread overview]
Message-ID: <46F33824.6000707@gmail.com> (raw)
In-Reply-To: <20070921031245.GA6628@srcf.ucam.org>
Matthew Garrett wrote:
> On Fri, Sep 21, 2007 at 12:08:07PM +0900, Tejun Heo wrote:
>
>> Yeah, that's the intended behavior. SATA PHY link can break from time
>> to time (have ever seen a SATA storage box going through ECC testing?
>> PHY goes offline as soon as you begin to hit it with some EM pulses) and
>> you don't really wanna lose your root partition over power fluctuation.
>
> In this case we explicitly know that it's in response to a hotplug event
> (well, either that or the firmware is on impressive crack). Would it be
> possible to communicate that in order to avoid the revalidation?
No, I don't thinks so && I don't really think trusting firmware that
much is a good idea. Also, it's much better to fix the problem in
general than just fixing it for the firmware case which will be much
less than the rest.
--
tejun
next prev parent reply other threads:[~2007-09-21 3:19 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-15 3:01 [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug Matthew Garrett
2007-09-15 17:06 ` [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 2 Matthew Garrett
2007-09-16 12:22 ` Tejun Heo
2007-09-20 22:04 ` Jeff Garzik
2007-09-20 22:21 ` Matthew Garrett
2007-09-21 2:35 ` Tejun Heo
2007-09-21 2:42 ` Matthew Garrett
2007-09-21 2:53 ` Tejun Heo
2007-09-21 2:57 ` Matthew Garrett
2007-09-21 3:08 ` Tejun Heo
2007-09-21 3:12 ` Matthew Garrett
2007-09-21 3:19 ` Tejun Heo [this message]
2007-09-24 23:14 ` [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 3 Matthew Garrett
2007-09-27 17:26 ` Kristen Carlson Accardi
2007-09-27 17:55 ` Matthew Garrett
2007-09-27 20:39 ` Henrique de Moraes Holschuh
2007-10-02 15:04 ` Jeff Garzik
2007-10-02 18:46 ` Matthew Garrett
2007-10-02 18:49 ` [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 4 Matthew Garrett
2007-10-02 18:55 ` Jeff Garzik
2007-10-02 20:38 ` Jeff Garzik
2007-10-02 20:42 ` Matthew Garrett
2007-10-02 21:20 ` Matthew Garrett
2007-10-02 21:23 ` Jeff Garzik
2007-10-03 0:24 ` [PATCH] libata: Integrate ACPI-based PATA/SATA hotplug - version 5 Matthew Garrett
2007-10-03 20:27 ` Jeff Garzik
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