Messages in this thread | | | Date | Tue, 27 May 2008 14:32:02 -0700 | From | Kristen Carlson Accardi <> | Subject | Re: [PATCH] ata: ahci: power off unused ports |
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On Mon, 26 May 2008 23:08:54 -0400 Theodore Tso <tytso@mit.edu> wrote:
> 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@intel.com> > > 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 >
Hi Ted, As far as I know the patch has gone nowhere. I believe that Jeff wanted something more flexible than the module parameter that I provided to override the BIOS options. I am not working on this, I figured he had a pretty firm idea what he wanted so he was better equipped to write the patch.
Kristen
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