linux-kernel - Re: [PATCH] mmc: Always check for lower base frequency quirk for Ricoh 1180:e823

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20111005164306.GC2479@zod.bos.redhat.com>
Date:	Wed, 5 Oct 2011 12:43:06 -0400
From:	Josh Boyer <jwboyer@...hat.com>
To:	Manoj Iyer <manoj.iyer@...onical.com>
Cc:	Chris Ball <cjb@...top.org>,
	Koji Matsumuro <matsumur@....ricoh.co.jp>,
	Jesse Barnes <jbarnes@...tuousgeek.org>, stable@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: Always check for lower base frequency quirk for
 Ricoh 1180:e823

On Wed, Oct 05, 2011 at 11:27:01AM -0500, Manoj Iyer wrote:
> On Wed, 5 Oct 2011, Josh Boyer wrote:
> 
> >Commit 15bed0f2f added a quirk for the e823 Ricoh card reader to lower the
> >base frequency.  However, the quirk first checks to see if the proprietary
> >MMC controller is disabled, and returns if so.  On some devices, such as the
> >Lenovo X220, the MMC controller is already disabled by firmware it seems,
> 
> It is possible that the newer firmware from Lenovo disables the MMC
> controller. When the patch was done, these laptops had just been
> announced, so they had a very early version of the firmware (ver
> 1.02 iirc).

Seems so.  The X220 laptop I debugged this on shows:

[jwboyer@zod linux-2.6]$ cat /sys/devices/virtual/dmi/id/bios_version 
8DET42WW (1.12 )

josh
--
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/