Messages in this thread | | | Date | Wed, 13 Aug 2008 10:31:03 -0400 (EDT) | From | Alan Stern <> | Subject | Re: Power management for SCSI |
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On Wed, 13 Aug 2008, Pavel Machek wrote:
> From: Alan Stern <stern@rowland.harvard.edu> > > Add support for autosuspend/autoresume. Lowlevel driver can use it to > spin the disk down and power down its SATA link, to turn off the USB > interface, etc. > > Spinning down the disk is useful - saves ~0.5W here. Powering down > SATA controller is even better -- should save ~1W. > > Now, I guess the patch will need to be split to small pieces for > merge... I tried to rearrange it so that the documentation and hooks > go before stuff that needs the hooks, and before Kconfig enabler. If > it looks reasonably good, I'll split it into smaller pieces.
James had a number of objections to my original patch; you can read them here:
https://lists.linux-foundation.org/pipermail/linux-pm/2008-March/016849.html
I haven't had time yet to work on an improved version.
Alan Stern
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