Warnings before patch:
files: ['include/linux/ftrace.h', 'kernel/trace/ftrace.c']
Warning: include/linux/ftrace.h:939 No description found for return value of 'ftrace_make_nop'
Warning: include/linux/ftrace.h:981 No description found for return value of 'ftrace_init_nop'
Warning: include/linux/ftrace.h:1006 No description found for return value of 'ftrace_make_call'
Warning: include/linux/ftrace.h:1036 No description found for return value of 'ftrace_modify_call'
Warning: kernel/trace/ftrace.c:1478 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2408 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2422 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3510 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3648 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6265 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6387 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6510 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6533 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6610 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6633 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9016 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9039 No description found for return value of 'unregister_ftrace_function'

Current warnings:
files: ['include/linux/ftrace.h', 'kernel/trace/ftrace.c']
Warning: include/linux/ftrace.h:945 No description found for return value of 'ftrace_make_nop'
Warning: include/linux/ftrace.h:987 No description found for return value of 'ftrace_init_nop'
Warning: include/linux/ftrace.h:1012 No description found for return value of 'ftrace_make_call'
Warning: include/linux/ftrace.h:1042 No description found for return value of 'ftrace_modify_call'
Warning: kernel/trace/ftrace.c:1478 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2408 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2422 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3510 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3648 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6265 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6387 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6582 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6605 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6682 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6705 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9088 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9111 No description found for return value of 'unregister_ftrace_function'

Warnings before: 17 after: 17