WARNING: line length of 90 exceeds 80 columns
#33: FILE: tools/testing/selftests/net/psock_fanout.c:310:
+		fprintf(stderr, "test: control multiple sockets with link down toggle\n");

total: 0 errors, 1 warnings, 0 checks, 40 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 c8cb2f926921 ("selftests: net/psock_fanout: socket joins fanout when link is down") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 40 lines checked