WARNING: line length of 81 exceeds 80 columns
#43: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:26:
+	SYS(fail, "ip -net %s link add %s type dummy", NS_BASIC_TEST, DUMMY_DEV);

WARNING: line length of 90 exceeds 80 columns
#44: FILE: tools/testing/selftests/bpf/prog_tests/netpoll.c:27:
+	SYS(fail, "ip -net %s addr add %s/24 dev %s", NS_BASIC_TEST, DUMMY_IP, DUMMY_DEV);

total: 0 errors, 2 warnings, 0 checks, 85 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 0073976068cd ("selftests/bpf: Add netpoll setup basic tests") 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, 2 warnings, 0 checks, 85 lines checked