Missing variable initialisation would mean it would sometimes not put ATAPI
devices into DMA by default.
Signed-off-by: NAlan Cox <alan@redhat.com>
Cc: <Jack.Lee@ite.com.tw>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>