From b73fb4e85cb3428b2b9cd0063adb6363938a8fc3 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 16 Nov 2022 17:19:50 -0700
Subject: [PATCH] Simplify step-40.

---
 examples/step-40/step-40.cc | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/examples/step-40/step-40.cc b/examples/step-40/step-40.cc
index 4906261cd4..58958135d5 100644
--- a/examples/step-40/step-40.cc
+++ b/examples/step-40/step-40.cc
@@ -469,22 +469,16 @@ namespace Step40
                                                     mpi_communicator);
 
     SolverControl solver_control(dof_handler.n_dofs(), 1e-12);
+    LA::SolverCG  solver(solver_control);
 
-#ifdef USE_PETSC_LA
-    LA::SolverCG solver(solver_control, mpi_communicator);
-#else
-    LA::SolverCG solver(solver_control);
-#endif
-
-    LA::MPI::PreconditionAMG preconditioner;
 
     LA::MPI::PreconditionAMG::AdditionalData data;
-
 #ifdef USE_PETSC_LA
     data.symmetric_operator = true;
 #else
     /* Trilinos defaults are good */
 #endif
+    LA::MPI::PreconditionAMG preconditioner;
     preconditioner.initialize(system_matrix, data);
 
     solver.solve(system_matrix,
-- 
2.39.5