WARNING: Missing a blank line after declarations
#27: FILE: tools/testing/selftests/bpf/prog_tests/timer.c:105:
+	int err, prog_fd;
+	LIBBPF_OPTS(bpf_test_run_opts, topts);

total: 0 errors, 1 warnings, 0 checks, 66 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 666919d73535 ("selftests/bpf: Verify bpf_timer_cancel_async works") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 1 warnings, 0 checks, 66 lines checked