I posted this before, but didn't see any discussion.

This patch fixes a couple of places where the usb subsystem
DMAs to/from local (stack) variables.  This doesn't work on
non-cache-coherent processors.  I'm testing on PPC 4xx systems.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>