netdev - Re: [patch 02/10] forcedeth: power down phy when interface is down

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Message-Id: <20071213170721.e71ff79f.akpm@linux-foundation.org>
Date:	Thu, 13 Dec 2007 17:07:21 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Ed Swierk" <eswierk@...stra.com>
Cc:	AAbdulla@...dia.com, jeff@...zik.org, netdev@...r.kernel.org
Subject: Re: [patch 02/10] forcedeth: power down phy when interface is down

On Thu, 13 Dec 2007 16:53:58 -0800
"Ed Swierk" <eswierk@...stra.com> wrote:

> On 12/13/07, Andrew Morton <akpm@...ux-foundation.org> wrote:
> > Does this patch actually fix any observeable problem?
> 
> Without the patch, ifconfig down leaves the physical link up, which
> confuses datacenter users who expect the link lights both on the NIC
> and the switch to go out when they bring an interface down.
> 
> Furthermore, even though the phy is powered on, autonegotiation stops
> working, so a normally gigabit link might suddenly become 100 Mbit
> half-duplex when the interface goes down, and become gigabit when it
> comes up again.
> 

OK, thanks, I added that text to the changelog along with Ayaz's objection
and shall continue to bug people with it until we have a fix merged.  
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