WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#56: FILE: tools/lib/bpf/str_error.c:29:
+			case ENOTSUPP:

WARNING: line length of 88 exceeds 80 columns
#60: FILE: tools/lib/bpf/str_error.c:33:
+				/* strerror_r() doesn't recognize this specific error */

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#77: FILE: tools/lib/bpf/str_error.h:7:
+#ifndef ENOTSUPP

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#78: FILE: tools/lib/bpf/str_error.h:8:
+#define ENOTSUPP 524

total: 0 errors, 4 warnings, 0 checks, 41 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 5a97a8842d3c ("libbpf: handle ENOTSUPP in libbpf_strerror_r") 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, 41 lines checked