drmach_board_poweron
hp->h_err = drmach_board_poweron(bp->b_id);
extern sbd_error_t *drmach_board_poweron(drmachid_t id);
hp->h_err = drmach_board_poweron(bp->b_id);
extern sbd_error_t *drmach_board_poweron(drmachid_t id);