Re: autosuspend for SCSI devices

[Oliver Neukum]

Am Montag 25 August 2008 10:19:01 schrieb Pavel Machek:
> From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> 
> 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@xxxxxxx>

Hi,

firstly, it doesn't consider error handling before suspending.
Secondly, it is simply not true that in SCSI suspending the disks
is always necessary before suspending the controller.

	Regards
		Oliver

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