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Date:	Sun, 11 Jul 2010 17:03:00 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	bhutchings@...arflare.com
Cc:	dm@...lsio.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 5/5] cxgb4: exclude registers with read side
 effects from register dumps

From: Ben Hutchings <bhutchings@...arflare.com>
Date: Sun, 11 Jul 2010 23:17:06 +0100

> On Sun, 2010-07-11 at 15:01 -0700, Dimitris Michailidis wrote:
>> A few registers have side effects on reads, eg FIFO pointers that
>> auto advance or mailboxes which change ownership when read.  They are
>> unsafe to read so exclude them from ethtool register dumps.
> [...]
> 
> If you change the set of registers in the dump, you need to increment
> the version number.

Agreed.
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