netdev - Re: [PATCH net-next 5/5] cxgb4: exclude registers with read side effects from register dumps

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Message-ID: <1278886626.6139.87.camel@localhost>
Date:	Sun, 11 Jul 2010 23:17:06 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Dimitris Michailidis <dm@...lsio.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next 5/5] cxgb4: exclude registers with read side
 effects from register dumps

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.

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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