CHECK: Please don't use multiple blank lines
#63: FILE: tools/testing/selftests/bpf/prog_tests/wakeup_source_iter.c:15:
+
+

CHECK: Lines should not end with a '('
#184: FILE: tools/testing/selftests/bpf/prog_tests/wakeup_source_iter.c:136:
+	*iter_fd = bpf_iter_create(

CHECK: Lines should not end with a '('
#273: FILE: tools/testing/selftests/bpf/prog_tests/wakeup_source_iter.c:225:
+static void subtest_ws_iter_check_no_infinite_reads(

WARNING: line length of 85 exceeds 80 columns
#279: FILE: tools/testing/selftests/bpf/prog_tests/wakeup_source_iter.c:231:
+	iter_fd = bpf_iter_create(bpf_link__fd(skel->links.wakeup_source_collector));

total: 0 errors, 1 warnings, 3 checks, 348 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 04720e7ec3a5 ("selftests/bpf: Add tests for wakeup_sources") 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, 3 checks, 348 lines checked