USB: keyspan: fix port DMA-buffer allocations
USB: keyspan: fix port DMA-buffer allocations

Make sure port DMA-buffers are allocated separately from containing
structure to prevent potential memory corruption on non-cache-coherent
systems.

Signed-off-by: Johan Hovold <6a430eed381e126d51a8cce8db662f765ce314bc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs