WARNING: line length of 81 exceeds 80 columns
#89: FILE: tools/lib/bpf/linker.c:585:
+		pr_warn("linker: unknown byte order of ELF file %s\n", filename);

WARNING: line length of 84 exceeds 80 columns
#99: FILE: tools/lib/bpf/linker.c:595:
+		pr_warn("linker: byte order mismatch with ELF file %s\n", filename);

WARNING: line length of 91 exceeds 80 columns
#144: FILE: tools/lib/bpf/linker.c:1212:
+				pr_warn("%s: error changing insns endianness\n", __func__);

WARNING: line length of 87 exceeds 80 columns
#195: FILE: tools/lib/bpf/linker.c:2814:
+			pr_warn("failed to set .BTF.ext output endianness: %d\n", err);

total: 0 errors, 4 warnings, 0 checks, 169 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 9e1315d39281 ("libbpf: Support linking bpf objects of either endianness") 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, 4 warnings, 0 checks, 169 lines checked