linux-kernel - Re: Bugs in MMC [was: [Bug 10030] Suspend doesn't work when SD card is inserted]

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Message-ID: <31e679430802251451y3ae370ddj125616ee4e655536@mail.gmail.com>
Date:	Tue, 26 Feb 2008 00:51:43 +0200
From:	"Felipe Balbi" <felipebalbi@...rs.sourceforge.net>
To:	"Pierre Ossman" <drzeus-mmc@...eus.cx>, carlos.aguiar@...t.com.br
Cc:	"Alan Stern" <stern@...land.harvard.edu>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"pm list" <linux-pm@...ts.linux-foundation.org>,
	"Zdenek Kabelac" <zdenek.kabelac@...il.com>,
	"David Brownell" <david-b@...bell.net>,
	"Kernel development list" <linux-kernel@...r.kernel.org>
Subject: Re: Bugs in MMC [was: [Bug 10030] Suspend doesn't work when SD card is inserted]

<snip>

> > What's the purpose of the card-counting loop in
> > host/omap.c:mmc_omap_switch_handler()? It looks like dead code.
> >
>
> I'm not too familiar with that driver, but they've been playing around
> with multiplexing several cards into one controller. Might be bits and
> pieces of that.
>

AFAIK, that came after mmc multislot support. Omap2 has one mmc
controller  for several (2 in practice) mm slots (cards).
It's not really a dead code since it's used in n800 and n810, it's in
linux-omap archives and git tree.

Carlos Aguiar, added in the loop, might have some comments about it.

--
Best Regards,
Felipe Balbi
felipebalbi@...rs.sourceforge.net
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