linux-kernel - Re: autosuspend for SCSI devices

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Message-Id: <200808222252.52947.rjw@sisk.pl>
Date:	Fri, 22 Aug 2008 22:52:51 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@...e.cz>
Cc:	oneukum@...e.de, linux-pm@...ts.linux-foundation.org,
	James.Bottomley@...senpartnership.com,
	linux-kernel@...r.kernel.org, teheo@...ell.com,
	stefanr@...6.in-berlin.de, Martin.Leisner@...ox.com
Subject: Re: autosuspend for SCSI devices

On Friday, 22 of August 2008, Pavel Machek wrote:
> From: Alan Stern <stern@...land.harvard.edu>
> 
> Add support for autosuspend/autoresume of the SCSI devices. Lowlevel
> driver can use it to spin the disk down... and it is neccessary step
> for powering down the controllers.
> 
> Spinning down the disk is useful - saves ~0.5W here, and it is last
> major thing we can do to save power on some small machines like
> Kohjinsha subnotebooks.
> 
> Signed-off-by: Pavel Machek <pavel@...e.cz>

-ENOPATCH
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