From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <mlord@pobox.com>
Date: Thu, 13 May 2010 03:12:43 +0000
Subject: Re: System hangs when using USB 3.0 HD with on Ubuntu
Message-Id: <4BEB6E2B.7060408@pobox.com>
List-Id: <linux-hotplug.vger.kernel.org>
References: <Pine.LNX.4.44L0.1005121444450.1353-100000@iolanthe.rowland.org>
In-Reply-To: <Pine.LNX.4.44L0.1005121444450.1353-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: Alan Stern <stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org>
Cc: James Bottomley <James.Bottomley-l3A5Bk7waGM@public.gmane.org>, Jonas Schwertfeger <jschwertfeger-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Sarah Sharp <sarah.a.sharp-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>, Dinh.Nguyen-KZfg59tc24xl57MIdRCFDg@public.gmane.org, Sergei Shtylyov <sshtylyov-Igf4POYTYCDQT0dZR+AlfA@public.gmane.org>, Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>, David Zeuthen <david-o55+BOBDEFg@public.gmane.org>, linux-hotplug-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, USB Storage List <usb-storage-ijkIwGHArpdIPJnuZ7Njw4oP9KaGy4wf@public.gmane.org>, Matthew Dharm <mdharm-usb-JGfshJpz5UybPZpvUQj5UqxOck334EZe@public.gmane.org>, linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Lennart Poettering <lennart-mdGvqq1h2p+GdvJs77BJ7Q@public.gmane.org>, Douglas Gilbert <dgilbert-qazKcTl6WRFWk0Htik3J/w@public.gmane.org>

On 12/05/10 02:48 PM, Alan Stern wrote:
..
> That's right.  Since the command in question did have CK_COND set, the
> device should have returned CHECK CONDITION status instead of GOOD
> status.
>
> Therefore this indicates a bug in the device, not in the kernel.
> hdparm could work around it here by issuing an explicit REQUEST SENSE
> command, but in general it will cause trouble.
..

I wonder if perhaps usb-storage could honour the flag
when the device doesn't ?

-- 
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com