EDB_ACTIVE
vha->e_dbell.db_flags &= ~EDB_ACTIVE; /* mark it not active */
vha->e_dbell.db_flags |= EDB_ACTIVE;
#define DBELL_ACTIVE(_v) (_v->e_dbell.db_flags & EDB_ACTIVE)
#define DBELL_INACTIVE(_v) (!(_v->e_dbell.db_flags & EDB_ACTIVE))
!(vha->e_dbell.db_flags & EDB_ACTIVE) &&