From: Pierre Ossman <drzeus-list@drzeus.cx>
To: Alex Dubov <oakad@yahoo.com>
Cc: David Brownell <david-b@pacbell.net>,
Andrew Victor <linux@maxim.org.za>, Pavel Pisa <ppisa@pikron.com>,
Carlos Aguiar <carlos.aguiar@indt.org.br>,
Anderson Briglia <briglia.anderson@gmail.com>,
"Syed Mohammed, Khasim" <x0khasim@ti.com>,
Russell King <rmk@arm.linux.org.uk>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] MMC multiwrite capability removal
Date: Sun, 20 Apr 2008 10:30:19 +0200 [thread overview]
Message-ID: <20080420103019.7c31cb9f@mjolnir.drzeus.cx> (raw)
In-Reply-To: <896748.37554.qm@web36708.mail.mud.yahoo.com>
On Sat, 19 Apr 2008 19:34:12 -0700 (PDT)
Alex Dubov <oakad@yahoo.com> wrote:
>
> tifm_sd relies on controller to report the number of successfully transferred
> blocks. Of course, I cannot be sure to what extent the controller is
> trustworthy. It worked fine until now, though.
>
Sounds like a perfect example of when we have to report 0 upon
failures. I suspect most controllers will be like this as all the specs
I've glanced at lack the detail needed to implement a proper sector
count.
The problems caused by reporting incorrect values here are extremely
rare and difficult to provoke, so normal testing is not likely to
uncover it.
Rgds
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
next prev parent reply other threads:[~2008-04-20 8:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-19 7:51 Pierre Ossman
2008-04-20 2:34 ` Alex Dubov
2008-04-20 8:30 ` Pierre Ossman [this message]
2008-04-20 14:54 ` Alex Dubov
2008-04-21 19:05 ` David Brownell
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