Warnings before patch:
files: ['kernel/kthread.c']
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:965 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1067 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1180 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1707 No description found for return value of 'kthread_blkcg'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:581 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:649 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:731 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:775 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:805 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:965 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1067 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1180 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1707 No description found for return value of 'kthread_blkcg'

Current warnings:
files: ['kernel/kthread.c']
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:579 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:647 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:729 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:773 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:803 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:977 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1079 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1192 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1719 No description found for return value of 'kthread_blkcg'
Warning: kernel/kthread.c:166 No description found for return value of 'kthread_should_stop'
Warning: kernel/kthread.c:188 No description found for return value of 'kthread_should_park'
Warning: kernel/kthread.c:213 No description found for return value of 'kthread_freezable_should_stop'
Warning: kernel/kthread.c:235 No description found for return value of 'kthread_func'
Warning: kernel/kthread.c:252 No description found for return value of 'kthread_data'
Warning: kernel/kthread.c:267 No description found for return value of 'kthread_probe_data'
Warning: kernel/kthread.c:579 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:647 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:729 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:773 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:803 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:977 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1079 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1192 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1719 No description found for return value of 'kthread_blkcg'

Warnings before: 30 after: 30