WARNING: line length of 82 exceeds 80 columns
#27: FILE: tools/lib/bpf/libbpf.c:3148:
+struct btf *bpf_object__sanitize_btf(struct bpf_object *obj, struct btf *orig_btf)

WARNING: line length of 83 exceeds 80 columns
#70: FILE: tools/lib/bpf/libbpf_internal.h:431:
+struct btf *bpf_object__sanitize_btf(struct bpf_object *obj, struct btf *orig_btf);

total: 0 errors, 2 warnings, 0 checks, 44 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 640245a4ed45 ("libbpf: Allow use of feature cache for non-token cases") 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, 44 lines checked