DEF_PR_REG_ACTIVE
clear_bit(DEF_PR_REG_ACTIVE, &orig->deve_flags);
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
set_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
clear_bit(DEF_PR_REG_ACTIVE, &deve->deve_flags);
registered_nexus = test_bit(DEF_PR_REG_ACTIVE,