mmc: don't call switch on old cards
authorPierre Ossman <drzeus@drzeus.cx>
Thu, 31 May 2007 20:25:11 +0000 (22:25 +0200)
committerPierre Ossman <drzeus@drzeus.cx>
Thu, 7 Jun 2007 07:25:58 +0000 (09:25 +0200)
Make sure we don't call the switch function on cards too old to
support it. They should just ignore it, but some have been reported
to lock up instead.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

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