From: Tejun Heo <htejun@gmail.com>
To: Shem Multinymous <multinymous@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
jgarzik@pobox.com, axboe@suse.de, albertcc@tw.ibm.com,
forrest.zhao@intel.com, efalk@google.com,
linux-ide@vger.kernel.org
Subject: Re: [PATCH 08/13] ata_piix: convert ata_piix to new probing mechanism
Date: Fri, 12 May 2006 01:13:45 +0900 [thread overview]
Message-ID: <446362B9.7080302@gmail.com> (raw)
In-Reply-To: <41840b750605110908te0b0026l54e559a90854f887@mail.gmail.com>
Shem Multinymous wrote:
> Hi Alan,
>
> On 5/11/06, Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
>> On Gwe, 2006-05-12 at 00:32 +0900, Tejun Heo wrote:
>> > Convert ata_piix to new probing mechanism. Automatic hotplug is not
>> > supported due to hardware limitation (no PHY event interrupt), but
>> > warm plugging works.
>>
>> True for the SATA ports but don't try it on the PATA ones. The PATA side
>> requires the right buffers are present, and also in some situations that
>> IORDY is not in use before the unplug.
>
> I'm not sure what you mean but the successful ThinkPad UltraBay
> hotplugging which I reported earlier is with PATA DVD and PATA HDD, on
> ICH6M with ata_piix. I tried it many times, with no problems or
> unexpected dmesg entries.
>
> As mentioned, it takes an extra ACPI command to electrically turn off
> the port.
Yeap, notebooks are special. Those hotbays are equipped with special
power/signal connectors, circuits and switches to prevent things from
burning, but, in general, hot plugging/unplugging PATA devices can fry
the device and the controller.
--
tejun
next prev parent reply other threads:[~2006-05-11 16:13 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 15:32 [PATCHSET 08/11] add hotplug support, take 2 Tejun Heo
2006-05-11 15:32 ` [PATCH 03/13] libata-hp: implement SCSI part of hotplug Tejun Heo
2006-05-11 15:32 ` [PATCH 04/13] libata-hp: implement warmplug Tejun Heo
2006-05-11 15:32 ` [PATCH 02/13] libata-hp: implement hotplug Tejun Heo
2006-05-11 15:32 ` [PATCH 06/13] libata-hp: implement bootplug Tejun Heo
2006-05-11 15:32 ` [PATCH 05/13] libata-hp: hook warmplug Tejun Heo
2006-05-11 15:32 ` [PATCH 07/13] libata-hp: implement unload-unplug Tejun Heo
2006-05-11 15:32 ` [PATCH 09/13] sata_sil: convert to new probing mechanism and add hotplug support Tejun Heo
2006-05-11 15:32 ` [PATCH 01/13] libata-hp: implement ata_eh_detach_dev() Tejun Heo
2006-05-11 15:32 ` [PATCH 08/13] ata_piix: convert ata_piix to new probing mechanism Tejun Heo
2006-05-11 15:58 ` Alan Cox
2006-05-11 16:02 ` Tejun Heo
2006-05-11 16:08 ` Shem Multinymous
2006-05-11 16:13 ` Tejun Heo [this message]
2006-05-11 15:32 ` [PATCH 13/13] libata-hp: move ata_do_reset() to libata-eh.c Tejun Heo
2006-05-11 15:32 ` [PATCH 11/13] sata_sil24: convert to new probing mechanism and add hotplug support Tejun Heo
2006-05-11 15:32 ` [PATCH 10/13] ahci: " Tejun Heo
2006-05-11 15:32 ` [PATCH 12/13] libata-hp: killl ops->probe_reset Tejun Heo
2006-05-13 12:56 ` [PATCHSET 08/11] add hotplug support, take 2 Tejun Heo
-- strict thread matches above, loose matches on Subject: below --
2006-05-19 15:48 [PATCHSET 03/03] add hotplug support, take 3 Tejun Heo
2006-05-19 15:48 ` [PATCH 08/13] ata_piix: convert ata_piix to new probing mechanism Tejun Heo
2006-05-29 6:38 [PATCHSET 03/03] add hotplug support, take 4 Tejun Heo
2006-05-29 6:38 ` [PATCH 08/13] ata_piix: convert ata_piix to new probing mechanism Tejun Heo
2006-05-31 11:25 [PATCHSET 03/03] add hotplug support, take 5 Tejun Heo
2006-05-31 11:25 ` [PATCH 08/13] ata_piix: convert ata_piix to new probing mechanism Tejun Heo
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