diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 7bf23df6910..4d516595d50 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -5070,7 +5070,7 @@ bool nir_lower_phis_to_scalar(nir_shader *shader, bool lower_all);
 void nir_lower_io_arrays_to_elements(nir_shader *producer, nir_shader *consumer);
 void nir_lower_io_arrays_to_elements_no_indirects(nir_shader *shader,
                                                   bool outputs_only);
-void nir_lower_io_to_scalar(nir_shader *shader, nir_variable_mode mask);
+bool nir_lower_io_to_scalar(nir_shader *shader, nir_variable_mode mask);
 bool nir_lower_io_to_scalar_early(nir_shader *shader, nir_variable_mode mask);
 bool nir_lower_io_to_vector(nir_shader *shader, nir_variable_mode mask);
 bool nir_vectorize_tess_levels(nir_shader *shader);
diff --git a/src/compiler/nir/nir_lower_io_to_scalar.c b/src/compiler/nir/nir_lower_io_to_scalar.c
index 6e14b3ddfc5..6b157926541 100644
--- a/src/compiler/nir/nir_lower_io_to_scalar.c
+++ b/src/compiler/nir/nir_lower_io_to_scalar.c
@@ -268,14 +268,14 @@ nir_lower_io_to_scalar_instr(nir_builder *b, nir_instr *instr, void *data)
    return false;
 }
 
-void
+bool
 nir_lower_io_to_scalar(nir_shader *shader, nir_variable_mode mask)
 {
-   nir_shader_instructions_pass(shader,
-                                nir_lower_io_to_scalar_instr,
-                                nir_metadata_block_index |
-                                nir_metadata_dominance,
-                                &mask);
+   return nir_shader_instructions_pass(shader,
+                                       nir_lower_io_to_scalar_instr,
+                                       nir_metadata_block_index |
+                                       nir_metadata_dominance,
+                                       &mask);
 }
 
 static nir_variable **