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    SubjectRe: autosuspend for SCSI devices
    On Mon 2008-08-25 10:55:44, Oliver Neukum wrote:
    > Am Montag 25 August 2008 10:19:01 schrieb Pavel Machek:
    > > From: Alan Stern <stern@rowland.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@suse.cz>
    >
    > Hi,
    >
    > firstly, it doesn't consider error handling before suspending.

    What problems do you see with error handling? This patch does not
    touch the error handling, and I do not think it needs to touch it.

    > Secondly, it is simply not true that in SCSI suspending the disks
    > is always necessary before suspending the controller.

    Ok, will fix the changelog... but it is still true at least for USB
    controllers.
    Pavel
    --
    (english) http://www.livejournal.com/~pavelmachek
    (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html


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