WARNING: line length of 87 exceeds 80 columns
#24: FILE: kernel/trace/ftrace.c:1193:
+add_hash_entry_direct(struct ftrace_hash *hash, unsigned long ip, unsigned long direct)

WARNING: line length of 94 exceeds 80 columns
#52: FILE: kernel/trace/ftrace.c:1386:
+			if (add_hash_entry_direct(new_hash, entry->ip, entry->direct) == NULL)

CHECK: Comparison to NULL could be written "!add_hash_entry_direct"
#52: FILE: kernel/trace/ftrace.c:1386:
+			if (add_hash_entry_direct(new_hash, entry->ip, entry->direct) == NULL)

total: 0 errors, 2 warnings, 1 checks, 34 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 e4e0a28a4767 ("ftrace: Make alloc_and_copy_ftrace_hash direct friendly") 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, 1 checks, 34 lines checked