diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp
index bc408922a5a..577bf544b46 100644
--- a/src/compiler/glsl/link_varyings.cpp
+++ b/src/compiler/glsl/link_varyings.cpp
@@ -554,59 +554,6 @@ validate_explicit_variable_location(const struct gl_constants *consts,
    return true;
 }
 
-/**
- * Validate explicit locations for the inputs to the first stage and the
- * outputs of the last stage in a program, if those are not the VS and FS
- * shaders.
- */
-void
-validate_first_and_last_interface_explicit_locations(const struct gl_constants *consts,
-                                                     struct gl_shader_program *prog,
-                                                     gl_shader_stage first_stage,
-                                                     gl_shader_stage last_stage)
-{
-   /* VS inputs and FS outputs are validated in
-    * assign_attribute_or_color_locations()
-    */
-   bool validate_first_stage = first_stage != MESA_SHADER_VERTEX;
-   bool validate_last_stage = last_stage != MESA_SHADER_FRAGMENT;
-   if (!validate_first_stage && !validate_last_stage)
-      return;
-
-   struct explicit_location_info explicit_locations[MAX_VARYING][4];
-
-   gl_shader_stage stages[2] = { first_stage, last_stage };
-   bool validate_stage[2] = { validate_first_stage, validate_last_stage };
-   ir_variable_mode var_direction[2] = { ir_var_shader_in, ir_var_shader_out };
-
-   for (unsigned i = 0; i < 2; i++) {
-      if (!validate_stage[i])
-         continue;
-
-      gl_shader_stage stage = stages[i];
-
-      gl_linked_shader *sh = prog->_LinkedShaders[stage];
-      assert(sh);
-
-      memset(explicit_locations, 0, sizeof(explicit_locations));
-
-      foreach_in_list(ir_instruction, node, sh->ir) {
-         ir_variable *const var = node->as_variable();
-
-         if (var == NULL ||
-             !var->data.explicit_location ||
-             var->data.location < VARYING_SLOT_VAR0 ||
-             var->data.mode != var_direction[i])
-            continue;
-
-         if (!validate_explicit_variable_location(
-               consts, explicit_locations, var, prog, sh)) {
-            return;
-         }
-      }
-   }
-}
-
 /**
  * Check if we should force input / output matching between shader
  * interfaces.
diff --git a/src/compiler/glsl/link_varyings.h b/src/compiler/glsl/link_varyings.h
index 90fa9223539..4e41e7ebbb2 100644
--- a/src/compiler/glsl/link_varyings.h
+++ b/src/compiler/glsl/link_varyings.h
@@ -33,12 +33,6 @@
 
 struct gl_shader_program;
 
-void
-validate_first_and_last_interface_explicit_locations(const struct gl_constants *consts,
-                                                     struct gl_shader_program *prog,
-                                                     gl_shader_stage first,
-                                                     gl_shader_stage last);
-
 void
 cross_validate_outputs_to_inputs(const struct gl_constants *consts,
                                  struct gl_shader_program *prog,