linux-kernel - Re: Enable CONFIG_USB_SUSPEND by default or some mobile HD can't be unplugged safely

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Message-ID: <20090102181538.GA26389@dose.home.local>
Date:	Fri, 2 Jan 2009 19:15:38 +0100
From:	Tino Keitel <tino.keitel@....de>
To:	Mark Lord <lkml@....ca>
Cc:	linux-kernel@...r.kernel.org, gregkh@...e.de,
	linux-usb@...r.kernel.org
Subject: Re: Enable CONFIG_USB_SUSPEND by default or some mobile HD can't
	be unplugged safely

On Fri, Jan 02, 2009 at 10:51:05 -0500, Mark Lord wrote:
> Mark Lord wrote:

[...]

>> Incidently, the WD Passport drives support SG_IO,
>> so things like hdparm and smartctl can work with them as well.
> ..
>
> s/SG_IO/SG_IO+SAT/

The issue I noticed with the WD Passport drives is that the hard disk
won't spin down with /usr/bin/eject, which is used by HAL if the user
ejects the device (i.e.  via his desktop environment).  The WD Passport
drives need to be set into a sleep power condition. Something
like "sg_start --pc=3 /dev/sdX" needs to be used in this case.

I just checked hdparm -Y, and this works too.

Regards,
Tino
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