linux-kernel - Re: [Sdhci-devel] SDHCI driver runnining in aspire one, allows to write to R/O SD cards

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Message-Id: <1240859254.11237.8.camel@maxim-laptop>
Date:	Mon, 27 Apr 2009 22:07:34 +0300
From:	Maxim Levitsky <maximlevitsky@...il.com>
To:	Garrett D'Amore <garrett@...ore.org>
Cc:	Robert Hancock <hancockrwd@...il.com>, pierre@...man.eu,
	sdhci-devel@...ts.ossman.eu,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [Sdhci-devel] SDHCI driver runnining in aspire one, allows to
 write to R/O SD cards

On Mon, 2009-04-27 at 11:12 -0700, Garrett D'Amore wrote:
> As an extra data point, my sdhost driver in OpenSolaris works fine on 
> the AA1.. it does see that the cards are locked, and refuses to allow 
> them to be mounted read/write.
> 
> This leads me to believe that the original linux problem is one of two 
> things:
> 
> * either a bug in the linux code, or
> * busted circuit/hardware on a specific unit (i.e. a damaged unit)
> 
> I believe that if the Linux code was buggy here, the problem would be 
> reproducible on all platforms, not just the AA1.  So my inclination, 
> barring independent confirmation, is that most likely there are one ore 
> more defective units out there.
> 
> Note that the AA1 also has buggy BIOS -- OpenSolaris can't "see" the 
> cards (registers aren't properly initialized) unless they are present 
> when the unit first powers up.

But, why it works in windows?

Regards,
	Maxim Levitsky

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