MMC Password Protection support version 4
Since october/05 we've been implementing a new feature in the MultimediaCards driver on linux kernel: MMC Password protection as described in the MMC Specification v4.1. This feature is supported by all compliant MMC cards, and used by some devices such as Symbian OS cell phones to optionally protect MMC cards with a password.
Carlos Aguiar from INdT released the fourth version of the patches. Discussion thread and more information available at LKML here.