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:950 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1001 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1103 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1216 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1743 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:950 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1001 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1103 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1216 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1743 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:585 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:653 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:735 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:779 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:809 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:954 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1005 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1107 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1220 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1747 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:585 No description found for return value of 'kthread_create_on_node'
Warning: kernel/kthread.c:653 No description found for return value of 'kthread_create_on_cpu'
Warning: kernel/kthread.c:735 No description found for return value of 'kthread_park'
Warning: kernel/kthread.c:779 No description found for return value of 'kthread_stop'
Warning: kernel/kthread.c:809 No description found for return value of 'kthread_stop_put'
Warning: kernel/kthread.c:954 No description found for return value of 'kthreads_update_housekeeping'
Warning: kernel/kthread.c:1005 No description found for return value of 'kthread_worker_fn'
Warning: kernel/kthread.c:1107 No description found for return value of 'kthread_create_worker_on_node'
Warning: kernel/kthread.c:1220 No description found for return value of 'kthread_queue_work'
Warning: kernel/kthread.c:1747 No description found for return value of 'kthread_blkcg'

Warnings before: 32 after: 32