Message-ID: <456ACC9E.2030105@indt.org.br>
Date: Mon, 27 Nov 2006 07:31:42 -0400
From: Anderson Briglia <anderson.briglia@indt.org.br>
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To: ext Pierre Ossman <drzeus-list@drzeus.cx>
CC: "Linux-omap-open-source@linux.omap.com" 
	<linux-omap-open-source@linux.omap.com>,
       Russell King <rmk+lkml@arm.linux.org.uk>,
       Tony Lindgren <tony@atomide.com>,
       "Aguiar Carlos (EXT-INdT/Manaus)" <carlos.aguiar@indt.org.br>,
       ext David Brownell <david-b@pacbell.net>,
       "Lizardo Anderson (EXT-INdT/Manaus)" <anderson.lizardo@indt.org.br>,
       linux-kernel@vger.kernel.org
Subject: Re: [patch 4/5] [RFC] Add MMC Password Protection (lock/unlock) support
 V7: mmc_sysfs.diff
References: <45646457.1060203@indt.org.br> <45680555.1000406@drzeus.cx>
In-Reply-To: <45680555.1000406@drzeus.cx>
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Hi Pierre,

ext Pierre Ossman wrote:
> Patch looks ok. But I never got an answer what the difference between
> "change" and "assign" is.

You're right, the command is the same, but the difference is the password's
length and password itself sent to the card.
According to MMC spec 4.1, when a password replacement is done, the length value
(PWD_LEN) shall include both passwords, the old and the new one, and the password
(PWD) shall include the old (currently) followed by the new password.

Best Regards,

Anderson Briglia
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