Warnings before patch:
files: ['include/linux/rcupdate.h', 'kernel/bpf/core.c', 'kernel/bpf/memalloc.c', 'kernel/bpf/syscall.c']
Warning: include/linux/rcupdate.h:75 No description found for return value of 'same_state_synchronize_rcu'
Warning: include/linux/rcupdate.h:217 No description found for return value of 'rcu_trace_implies_rcu_gp'
Warning: include/linux/rcupdate.h:1179 No description found for return value of 'rcu_head_after_call_rcu'
Warning: include/linux/rcupdate.h:75 No description found for return value of 'same_state_synchronize_rcu'
Warning: include/linux/rcupdate.h:217 No description found for return value of 'rcu_trace_implies_rcu_gp'
Warning: include/linux/rcupdate.h:1179 No description found for return value of 'rcu_head_after_call_rcu'

Current warnings:
files: ['include/linux/rcupdate.h', 'kernel/bpf/core.c', 'kernel/bpf/memalloc.c', 'kernel/bpf/syscall.c']
Warning: include/linux/rcupdate.h:75 No description found for return value of 'same_state_synchronize_rcu'
Warning: include/linux/rcupdate.h:1167 No description found for return value of 'rcu_head_after_call_rcu'
Warning: include/linux/rcupdate.h:75 No description found for return value of 'same_state_synchronize_rcu'
Warning: include/linux/rcupdate.h:1167 No description found for return value of 'rcu_head_after_call_rcu'

Warnings before: 6 after: 4 (del: 2)

Warnings removed:
Warning: include/linux/rcupdate.h:217 No description found for return value of 'rcu_trace_implies_rcu_gp'
Warning: include/linux/rcupdate.h:217 No description found for return value of 'rcu_trace_implies_rcu_gp'
Per-file breakdown:
     2 include/linux/rcupdate.h