WARNING: line length of 82 exceeds 80 columns
#35: FILE: include/linux/ftrace.h:529:
+int register_ftrace_direct_hash(struct ftrace_ops *ops, struct ftrace_hash *hash);

WARNING: line length of 81 exceeds 80 columns
#44: FILE: include/linux/ftrace.h:557:
+int register_ftrace_direct_hash(struct ftrace_ops *ops, struct ftrace_hash *hash)

WARNING: line length of 81 exceeds 80 columns
#73: FILE: kernel/trace/ftrace.c:6235:
+static struct ftrace_hash *hash_add(struct ftrace_hash *a, struct ftrace_hash *b)

WARNING: line length of 89 exceeds 80 columns
#90: FILE: kernel/trace/ftrace.c:6252:
+			if (add_hash_entry_direct(add, entry->ip, entry->direct) == NULL)

CHECK: Comparison to NULL could be written "!add_hash_entry_direct"
#90: FILE: kernel/trace/ftrace.c:6252:
+			if (add_hash_entry_direct(add, entry->ip, entry->direct) == NULL)

WARNING: line length of 85 exceeds 80 columns
#102: FILE: kernel/trace/ftrace.c:6264:
+				   struct ftrace_ops *ops, struct ftrace_regs *fregs)

WARNING: line length of 81 exceeds 80 columns
#113: FILE: kernel/trace/ftrace.c:6275:
+int register_ftrace_direct_hash(struct ftrace_ops *ops, struct ftrace_hash *hash)

WARNING: line length of 84 exceeds 80 columns
#115: FILE: kernel/trace/ftrace.c:6277:
+	struct ftrace_hash *filter_hash = NULL, *new_hash = NULL, *free_hash = NULL;

total: 0 errors, 7 warnings, 1 checks, 148 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 263693a198ca ("ftrace: Add register_ftrace_direct_hash function") 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, 7 warnings, 1 checks, 148 lines checked