linux-kernel - Re: [PATCH] ata: ahci: power off unused ports

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Message-ID: <20080509001458.GA16082@srcf.ucam.org>
Date:	Fri, 9 May 2008 01:14:58 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Kristen Carlson Accardi <kristen.c.accardi@...el.com>
Cc:	jeff@...zik.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ata: ahci: power off unused ports

On Thu, May 08, 2008 at 04:35:55PM -0700, Kristen Carlson Accardi wrote:
> On Fri, 9 May 2008 00:37:13 +0100
> Matthew Garrett <mjg59@...f.ucam.org> wrote:
> > Just out of interest, is this set on laptop bays? (Are any of those even 
> > native SATA yet?)
> 
> I haven't seen any yet that are.  Most of them are PATA.  I expect
> that will change in the future.

Yeah. My vague concern would be that on laptops, we can probably power 
down the port even if it's declared as being hotplug capable - we'll 
probably get an out of band signal from ACPI anyway. Not an issue at the 
moment, but possibly something we'll hit in future.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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