WARNING: line length of 81 exceeds 80 columns
#47: FILE: net/ipv4/fib_frontend.c:845:
+		NL_SET_ERR_MSG(extack, "Invalid prefix for given prefix length");

total: 0 errors, 1 warnings, 0 checks, 75 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 13617cf85ce0 ("ipv4: fib: Move fib_valid_key_len() to rtm_to_fib_config().") 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, 1 warnings, 0 checks, 75 lines checked