From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Althoefer <stefan.althoefer@web.de>
Date: Tue, 16 Dec 2008 22:34:01 +0100
Subject: [U-Boot] [PATCH] common: nvedit to protect additional ethernet
 addresses Part 1/1
In-Reply-To: <20081215225530.2466B832E8A1@gemini.denx.de>
References: <4937cd00.hX/ek4tggr3wX3a8%stefan.althoefer@web.de>	<49384204.1070901@ge.com>
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	<20081215225530.2466B832E8A1@gemini.denx.de>
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Dear Wolfgang Denx,
>> But your suggested optimizations will only be effective if someone tries to
>> write to "serial#". This is not normally done (attempt can be considered
>> an error).
> 
> Can it? What make you think so?
> 
> There are lots of boards that come fresh out  of  production  with  a
> virgin  environment,  where  setting  "serial#" is a perfectly normal
> thing, and not an error at all.

Indeed, in the factory it is normal to set the serial number. Any later
attempt to "overwrite" it is an error (why the code rejects doing it).

-- Stefan