  Deep-inelastic scattering (DIS) from a tensor polarized deuteron is sensitive
to possible non-nucleonic components of the deuteron wave function. To
accurately estimate the size of the nucleonic contribution, final-state
interactions (FSIs) need to be accounted for in calculations. We outline a
model that, based on the diffractive nature of the effective hadron-nucleon
interaction, uses the generalized eikonal approximation to model the FSIs in
the resonance region, taking into account the proton-neutron component of the
deuteron. The calculation uses a factorized model with a basis of three
resonances with mass $W<2$ GeV as the relevant set of effective hadron states
entering the final-state interaction amplitude for inclusive DIS. We present
results for the tensor asymmetry observable $A_{zz}$ for kinematics accessible
in experiments at Jefferson Lab and Hermes. For inclusive DIS, sizeable effects
are found when including FSIs for Bjorken $x>0.2$, but the overall size of
$A_{zz}$ remains small. For tagged spectator DIS, FSIs effects are largest at
spectator momenta around 300 MeV and for forward spectator angles.
