r Chris Ball <cjb@laptop.org> 1296010426 -0500

mmc: mmci: don't read command response when invalid

Don't read the command response from the registers when either the
command timed out (because there was no response from the card) or
the checksum on the response was invalid.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
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