WARNING: ENOSYS means 'invalid syscall nr' and nothing else
#62: FILE: net/l2tp/l2tp_ppp.c:1067:
+			err = -ENOSYS;

WARNING: ENOSYS means 'invalid syscall nr' and nothing else
#89: FILE: net/l2tp/l2tp_ppp.c:1085:
+			err = -ENOSYS;

total: 0 errors, 2 warnings, 0 checks, 135 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 ddbc6e675a1e ("l2tp: take a session reference in pppol2tp_ioctl()") 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, 135 lines checked