Warnings before patch: files: ['net/bpf/test_run.c', 'tools/testing/selftests/bpf/prog_tests/verifier.c'] Warning: net/bpf/test_run.c:870 No description found for return value of 'range_is_zero' Warning: net/bpf/test_run.c:870 No description found for return value of 'range_is_zero' Current warnings: files: ['net/bpf/test_run.c', 'tools/testing/selftests/bpf/prog_tests/verifier.c', 'tools/testing/selftests/bpf/progs/verifier_ctx_ptr_param.c'] Warning: net/bpf/test_run.c:887 No description found for return value of 'range_is_zero' Warning: net/bpf/test_run.c:887 No description found for return value of 'range_is_zero' Warnings before: 2 after: 2