linux-kernel - RE: [PATCH] mmc: card: Skip secure option for MoviNAND.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <000101cd79c1$ebf01040$c3d030c0$%cy.chen@samsung.com>
Date:	Tue, 14 Aug 2012 11:10:04 +0900
From:	IAN CHEN <ian.cy.chen@...sung.com>
To:	'Namjae Jeon' <linkinjeon@...il.com>
Cc:	cjb@...top.org, adrian.hunter@...el.com, subhashj@...eaurora.org,
	linus.walleij@...aro.org, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org, d.j.shin@...sung.com,
	jongtae22.kim@...sung.com, kyungmin.park@...sung.com,
	jh80.chung@...sung.com
Subject: RE: [PATCH] mmc: card: Skip secure option for MoviNAND.

Dear Mr. Jeon,

This is workaround for some Samsung eMMC, MoviNAND.
There are known issue about secure erase & secure trim with these eMMC device which I listed by product_name.
Therefore, for these eMMC devices, we just skip mmc_blk_issue_secdiscard_rq() and use mmc_blk_issue_discard_rq() instead.

You could refer this discussion in XDA developers.
    http://forum.xda-developers.com/showthread.php?t=1644364
    https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB

Regards,
Ian
 
-----Original Message-----
From: Namjae Jeon [mailto:linkinjeon@...il.com] 
Sent: Monday, August 13, 2012 10:03 PM
To: IAN CHEN
Cc: cjb@...top.org; adrian.hunter@...el.com; subhashj@...eaurora.org; linus.walleij@...aro.org; linux-mmc@...r.kernel.org; linux-kernel@...r.kernel.org; d.j.shin@...sung.com; jongtae22.kim@...sung.com; kyungmin.park@...sung.com; jh80.chung@...sung.com
Subject: Re: [PATCH] mmc: card: Skip secure option for MoviNAND.

Hi. Ian.

known issue ? Would you explain more ?

Thanks.

2012/8/13 IAN CHEN <ian.cy.chen@...sung.com>:
> From 5c60eb8be04c7440d6e33b8f72ea2046a3657ac4 Mon Sep 17 00:00:00 2001
> From: ian.cy.chen <ian.cy.chen@...sung.com>
> Date: Mon, 13 Aug 2012 10:53:55 +0900
> Subject: [PATCH] mmc: card: Skip secure option for MoviNAND.
>
> For several MoviNAND, there are some known issue with secure option.
> For these specific MoviNAND device, we skip secure option.
>
> Signed-off-by: Ian Chen <ian.cy.chen@...sung.com>
> ---
>  drivers/mmc/card/block.c |   24 +++++++++++++++++++++++-
>  include/linux/mmc/card.h |    1 +
>  2 files changed, 24 insertions(+), 1 deletions(-)
>

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