From: Larry Finger <Larry.Finger@lwfinger.net>
To: Michael Buesch <mb@bu3sch.de>
Cc: Calvin Walton <calvin.walton@gmail.com>,
John W Linville <linville@tuxdriver.com>,
bcm43xx-dev@lists.berlios.de, linux-wireless@vger.kernel.org
Subject: Re: [PATCH V2] ssb: Implement virtual SPROM on disk
Date: Mon, 22 Mar 2010 17:19:54 -0500 [thread overview]
Message-ID: <4BA7ED0A.9060804@lwfinger.net> (raw)
In-Reply-To: <201003222255.00366.mb@bu3sch.de>
On 03/22/2010 04:55 PM, Michael Buesch wrote:
>
> I don't see a problem for udev to distinguish the cards. It can do it merely on
> the bus-ID. That's unique. Yeah, it might change if you change the hardware.
> But do we care? I say no, because you cannot actually change the hardware in real life
> for any of these devices. And even if you could reorder the devices on the bus or whatever.
> What would happen? The card would get a new MAC address. That's all. That's acceptable.
>
> The kernel would (for example) just set the mac address to all-ones. Udev would
> notice this (invalid) mac address and reassign a new persistent one to the device. It then
> stores the address on the harddisk.
What ensures that this persistent name would be unique?
> In fact, if we implement a mechanism in the kernel, we have _exactly_ the same problem.
> However, currently Larry's patches just ignore that problem and assume that there's only
> one card in the system anyway.
As I said in a posting a few minutes ago, that problem is solved.
Larry
next prev parent reply other threads:[~2010-03-22 22:20 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-21 23:22 [PATCH V2] ssb: Implement virtual SPROM on disk Larry Finger
2010-03-22 6:28 ` Calvin Walton
2010-03-22 8:37 ` Michael Buesch
2010-03-22 15:06 ` Larry Finger
2010-03-22 21:55 ` Michael Buesch
2010-03-22 22:19 ` Larry Finger [this message]
2010-03-22 22:28 ` Michael Buesch
2010-03-22 21:56 ` Larry Finger
2010-03-22 22:25 ` Michael Buesch
2010-03-22 23:45 ` Larry Finger
2010-03-23 8:52 ` Michael Buesch
2010-03-23 14:25 ` Larry Finger
2010-03-23 20:58 ` Calvin Walton
2010-03-23 22:02 ` Michael Buesch
2010-03-24 14:16 ` Larry Finger
2010-03-24 19:21 ` Michael Buesch
2010-03-26 3:47 ` Larry Finger
2010-03-28 17:14 ` Nicolas de Pesloüan
2010-03-28 18:25 ` Larry Finger
2010-03-28 19:04 ` Nicolas de Pesloüan
2010-03-29 0:33 ` Larry Finger
2010-03-24 1:25 ` Ehud Gavron
2010-03-23 8:55 ` Florian Fainelli
2010-03-23 11:43 ` Michael Buesch
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