SD_XB_DMA_FREED
if (xp->xb_pkt_flags & SD_XB_DMA_FREED) {
xp->xb_pkt_flags &= ~SD_XB_DMA_FREED;
((xp->xb_pkt_flags & SD_XB_DMA_FREED) != 0)) {
SD_XB_DMA_FREED) == 0) {
xp->xb_pkt_flags |= SD_XB_DMA_FREED;
xp->xb_pkt_flags |= SD_XB_DMA_FREED;
xp->xb_pkt_flags |= SD_XB_DMA_FREED;