K 10 svn:author V 4 jeff K 8 svn:date V 27 2012-12-24T01:00:36.954679Z K 7 svn:log V 306 - Simplify the bus_dma backend API by eliminating turning the three complete variants into a single variant and have the caller do the callbacks. This eliminates a lot of redundant code. - Add missing slist initializations. Pointed out by Ian Lepore. Sponsored by: EMC / Isilon Storage Division END