Re: [PATCH] ata: ahci: power off unused ports

From: Theodore Tso
Date: Tue May 27 2008 - 06:35:45 EST


On Thu, May 08, 2008 at 04:10:08PM -0700, Kristen Carlson Accardi wrote:
> power off unused ports
>
> If the port isn't either a drive bay or an external SATA port, do not
> keep the phy powered on if the port is unoccupied. This saves .75 watts
> on most laptops. A module parameter can be used to override this
> behavior and allow the phy's to be powered up regardless of whether it
> has externally accessible SATA ports.
>
> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@xxxxxxxxx>

Hi,

I'm wondering what's the status of this patch?

if this has hit a subsystem tree yet? 0.75 watts power savings sounds
really cool, but it doesn't seem to be in Linus's mainline yet. Has
it hit a subsystem tree yet, or is there some issue that still needs
to be resolved before it can go it?

Thanks, regards,

- Ted
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