Re: [PATCH] MMC: Add Extended CSD as a device attribute

[Adrian Hunter]

Pierre Ossman wrote:
> On Fri, 16 Jan 2009 12:41:50 +0200
> Adrian Hunter <ext-adrian.hunter@xxxxxxxxx> wrote:
>
> > From: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>
> > Date: Wed, 14 Jan 2009 17:45:53 +0200
> > Subject: [PATCH] MMC: Add Extended CSD as a device attribute
> >
> > Extended CSD is a MMC card register.  The Card Identification
> > (CID) register and the Card-Specific Data (CSD) register are
> > already device attributes.  As increasingly interesting
> > fields are being added to Extended CSD, it seems reasonable to
> > add it too.  Note that SD cards do not have an Extended CSD
> > register, so it is MMC only.
> >
> > Signed-off-by: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>
> > ---
>
> Well, this might be interesting for debugging, but I don't see anything
> of general interest for user space in there. What's your use case?

Yes it is mainly just debugging.  It was done as a device attribute for
consistency with the other card registers CID and CSD.

Would you prefer #ifdef CONFIG_MMC_DEBUG or debugfs?
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