WARNING: storage class 'static' should be located before type '__bpf_kfunc'
#59: FILE: net/mptcp/bpf.c:53:
+__bpf_kfunc static int

WARNING: storage class 'static' should be located before type '__bpf_kfunc'
#86: FILE: net/mptcp/bpf.c:80:
+__bpf_kfunc static struct mptcp_subflow_context *

WARNING: storage class 'static' should be located before type '__bpf_kfunc'
#98: FILE: net/mptcp/bpf.c:92:
+__bpf_kfunc static void

total: 0 errors, 3 warnings, 0 checks, 72 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 018e54e7f9bd ("bpf: Add mptcp_subflow bpf_iter") 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, 3 warnings, 0 checks, 72 lines checked