Warnings before patch:
files: ['kernel/bpf/trampoline.c', 'kernel/bpf/verifier.c', 'kernel/trace/ftrace.c', 'tools/bpf/resolve_btfids/Makefile', 'tools/testing/selftests/bpf/Makefile', 'tools/testing/selftests/bpf/prog_tests/reg_bounds.c', 'tools/testing/selftests/bpf/progs/exceptions_assert.c', 'tools/testing/selftests/bpf/progs/verifier_bounds.c', 'tools/testing/selftests/bpf/progs/verifier_linked_scalars.c', 'tools/testing/selftests/bpf/progs/verifier_scalar_ids.c', 'tools/testing/selftests/bpf/verifier/precise.c']
Warning: kernel/trace/ftrace.c:1504 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2434 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2448 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3541 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3679 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6303 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6437 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6669 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6692 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6769 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6792 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9178 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9201 No description found for return value of 'unregister_ftrace_function'
Warning: kernel/trace/ftrace.c:1504 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2434 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2448 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3541 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3679 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6303 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6437 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6669 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6692 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6769 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6792 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9178 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9201 No description found for return value of 'unregister_ftrace_function'

Current warnings:
files: ['kernel/bpf/trampoline.c', 'kernel/bpf/verifier.c', 'kernel/trace/ftrace.c', 'tools/bpf/resolve_btfids/Makefile', 'tools/testing/selftests/bpf/Makefile', 'tools/testing/selftests/bpf/prog_tests/reg_bounds.c', 'tools/testing/selftests/bpf/progs/exceptions_assert.c', 'tools/testing/selftests/bpf/progs/verifier_bounds.c', 'tools/testing/selftests/bpf/progs/verifier_linked_scalars.c', 'tools/testing/selftests/bpf/progs/verifier_scalar_ids.c', 'tools/testing/selftests/bpf/verifier/precise.c']
Warning: kernel/trace/ftrace.c:1504 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2434 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2448 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3541 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3679 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6303 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6438 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6671 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6694 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6771 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6794 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9180 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9203 No description found for return value of 'unregister_ftrace_function'
Warning: kernel/trace/ftrace.c:1504 No description found for return value of 'ftrace_hash_move'
Warning: kernel/trace/ftrace.c:2434 No description found for return value of 'ftrace_update_record'
Warning: kernel/trace/ftrace.c:2448 No description found for return value of 'ftrace_test_record'
Warning: kernel/trace/ftrace.c:3541 No description found for return value of 'ftrace_startup_subops'
Warning: kernel/trace/ftrace.c:3679 No description found for return value of 'ftrace_shutdown_subops'
Warning: kernel/trace/ftrace.c:6303 No description found for return value of 'hash_add'
Warning: kernel/trace/ftrace.c:6438 No description found for return value of 'hash_sub'
Warning: kernel/trace/ftrace.c:6671 No description found for return value of 'ftrace_set_filter_ip'
Warning: kernel/trace/ftrace.c:6694 No description found for return value of 'ftrace_set_filter_ips'
Warning: kernel/trace/ftrace.c:6771 No description found for return value of 'ftrace_set_filter'
Warning: kernel/trace/ftrace.c:6794 No description found for return value of 'ftrace_set_notrace'
Warning: kernel/trace/ftrace.c:9180 No description found for return value of 'register_ftrace_function'
Warning: kernel/trace/ftrace.c:9203 No description found for return value of 'unregister_ftrace_function'

Warnings before: 26 after: 26