linux-kernel - [MMC] Multiple cards on one host

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Date:	Wed, 3 Sep 2008 10:43:43 +0200
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	Pierre Ossman <drzeus-mmc@...eus.cx>
Subject: [MMC] Multiple cards on one host

Hi,

I have a board (PXA based) which has two SD slots. It uses a gpio to
switch between the slots. In times when the MMC subsystem implemented
the bus topology our customer used this fact to connect the two slots on
a single host (although it was never intended to work with SD cards, it
seemed to work). Any idea how to implement this on recent kernels? I
thought about registering two hosts in pxamci.c, but this seems quite
hacky and I suppose I'll run into locking trouble.

Sascha

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