From: Mark Lord <kernel@teksavvy.com>
To: Tejun Heo <htejun@gmail.com>
Cc: Bruce Stenning <b.stenning@indigovision.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>
Subject: Re: sata_mv port lockup on hotplug (kernel 2.6.38.2)
Date: Tue, 26 Apr 2011 14:27:30 -0400 [thread overview]
Message-ID: <4DB70E92.2020209@teksavvy.com> (raw)
In-Reply-To: <20110425113036.GL17734@mtj.dyndns.org>
On 11-04-25 07:30 AM, Tejun Heo wrote:
> On Mon, Apr 25, 2011 at 12:07:04PM +0100, Bruce Stenning wrote:
>> Tejun, what does it mean to limit a sata link to UDMA/100? I thought that this
>> was only for ata devices, and sata devices have the choice of 1.5Gbps, 3Gbps,
>> or 6 Gbps. Is that a false assumption? Is it related to early sata devices that
>> were still somewhat based on parallel ata designs?
>
> Yeap, devices behind SATA-PATA bridge were still affected by the
> transfer mode so libata tries to slow them down too along with link
> speed when limiting speed due to errors. Shouldn't affect native SATA
> devices.
Yeah, what he said. :)
First generation SATA devices were merely PATA transports
with a SATA-to-PATA converter chip onboard. Some of those
require that we set the transfer modes.
Ditto for various more modern setups, where CF-cards, PATA drives,
and other weirdos are connected through a discrete SATA bridge device.
Cheers
next prev parent reply other threads:[~2011-04-26 18:27 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-06 14:20 sata_mv port lockup on hotplug (kernel 2.6.38.2) Bruce Stenning
2011-04-06 14:57 ` Bruce Stenning
2011-04-06 20:52 ` Mark Lord
2011-04-08 12:43 ` Bruce Stenning
2011-04-08 12:43 ` Bruce Stenning
2011-04-09 0:48 ` Mark Lord
2011-04-12 10:30 ` Bruce Stenning
2011-04-12 10:30 ` Bruce Stenning
2011-04-12 14:07 ` Mark Lord
2011-04-12 14:55 ` Mark Lord
2011-04-23 0:56 ` Tejun Heo
2011-04-25 11:07 ` Bruce Stenning
2011-04-25 11:30 ` Tejun Heo
2011-04-26 18:27 ` Mark Lord [this message]
2011-04-25 14:54 ` Bruce Stenning
2011-04-25 16:22 ` Tejun Heo
2011-04-26 13:13 ` Bruce Stenning
2011-04-26 13:50 ` Tejun Heo
2011-04-26 15:41 ` Bruce Stenning
2011-04-26 15:52 ` Tejun Heo
2011-04-26 16:05 ` Bruce Stenning
2011-04-30 14:01 ` Tejun Heo
2011-05-17 15:30 ` Bruce Stenning
2011-05-25 9:41 ` Tejun Heo
2011-05-25 13:36 ` Bruce Stenning
2011-05-25 22:27 ` Mark Lord
2011-05-30 13:07 ` Bruce Stenning
2011-05-30 13:07 ` Bruce Stenning
2011-05-31 2:04 ` Mark Lord
2011-06-10 12:28 ` Mark Lord
2011-06-10 14:01 ` Tejun Heo
2011-06-10 17:32 ` Mark Lord
2011-06-10 17:39 ` Jeff Garzik
2011-06-10 20:49 ` Mark Lord
2011-06-10 21:20 ` Jeff Garzik
2011-06-11 12:19 ` Tejun Heo
2011-06-12 17:10 ` Mark Lord
2011-06-13 10:48 ` Tejun Heo
2011-08-29 15:49 ` Bruce Stenning
2011-09-02 1:13 ` Tejun Heo
2011-09-02 16:22 ` Bruce Stenning
2011-09-06 3:45 ` Tejun Heo
2011-09-06 12:19 ` Bruce Stenning
2011-09-06 16:33 ` Tejun Heo
2011-09-06 16:42 ` Tejun Heo
2011-09-07 12:09 ` Bruce Stenning
2011-09-08 1:16 ` Tejun Heo
2011-09-06 12:26 ` Bruce Stenning
2011-09-06 14:40 ` Bruce Stenning
2011-09-06 15:22 ` Bruce Stenning
2011-04-26 18:37 ` Mark Lord
2011-04-13 15:10 ` Mark Lord
2011-04-13 16:13 ` Bruce Stenning
2011-04-13 16:13 ` Bruce Stenning
2011-04-14 16:50 ` Bruce Stenning
2011-04-14 16:50 ` Bruce Stenning
2011-04-15 0:28 ` Mark Lord
2011-04-15 13:21 ` Bruce Stenning
2011-04-15 13:21 ` Bruce Stenning
2011-04-15 15:36 ` Mark Lord
2011-04-18 10:30 ` Bruce Stenning
2011-04-18 10:30 ` Bruce Stenning
2011-04-23 0:56 ` Tejun Heo
2011-04-15 3:15 ` Mikael Abrahamsson
2011-04-15 3:32 ` Mark Lord
2011-04-15 7:43 ` Mikael Abrahamsson
2011-04-15 12:35 ` Mark Lord
2011-04-15 14:04 ` Mikael Abrahamsson
2011-04-15 15:30 ` Mark Lord
2011-04-06 21:00 ` Alejandro Riveira Fernández
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