WARNING: line length of 81 exceeds 80 columns
#183: FILE: net/l2tp/l2tp_core.c:1253:
+static int l2tp_xmit_ipv4(struct sock *sk, struct sk_buff *skb, struct flowi *fl)

WARNING: line length of 84 exceeds 80 columns
#226: FILE: net/l2tp/l2tp_core.c:1296:
+		if (inet_opt && inet_opt->opt.is_strictroute && rt->rt_uses_gateway)

WARNING: line length of 84 exceeds 80 columns
#252: FILE: net/l2tp/l2tp_core.c:1322:
+			ip_options_build(skb, &inet_opt->opt, inet->inet_daddr, rt);

total: 0 errors, 3 warnings, 0 checks, 160 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 226d168560d3 ("l2tp: fix double dst_release() on sk_dst_cache race") 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, 3 warnings, 0 checks, 160 lines checked