Re: [patch 4/5] [RFC] Add MMC Password Protection (lock/unlock) supportV7: mmc_sysfs.diff

[Anderson Briglia]

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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/