WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#51: FILE: arch/s390/net/bpf_jit_comp.c:2581:
+		return -ENOTSUPP;

WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
#55: FILE: arch/s390/net/bpf_jit_comp.c:2585:
+			return -ENOTSUPP;

total: 0 errors, 2 warnings, 0 checks, 48 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 942917e66c32 ("bpf/s390: prevent trampoline attachment when args location on stack is uncertain") 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, 2 warnings, 0 checks, 48 lines checked