==========
checkpatch - FAILED

ERROR: trailing whitespace
#38: FILE: tools/testing/selftests/net/test_ingress_egress_chaining.sh:18:
+for mod in $needed_mods; do $

WARNING: line length of 100 exceeds 80 columns
#44: FILE: tools/testing/selftests/net/test_ingress_egress_chaining.sh:23:
+	modinfo $mod &>/dev/null || { echo "SKIP: modules needed: $mods_missing"; exit $ksft_skip; }

total: 1 errors, 1 warnings, 0 checks, 15 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.

NOTE: Whitespace errors detected.
      You may wish to use scripts/cleanpatch or scripts/cleanfile

Commit 03de3e1c8a52 ("Improve missing mods error message and make shell script executable") 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.