Warnings before patch:
files: ['net/core/net_namespace.c', 'Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst', 'include/net/netns/ipv4.h']
Warning: net/core/net_namespace.c:754 No description found for return value of 'get_net_ns'
Warning: net/core/net_namespace.c:1429 No description found for return value of 'register_pernet_subsys'
Warning: net/core/net_namespace.c:1475 No description found for return value of 'register_pernet_device'

Current warnings:
files: ['net/core/net_namespace.c', 'Documentation/networking/net_cachelines/netns_ipv4_sysctl.rst', 'include/net/netns/ipv4.h']
Warning: net/core/net_namespace.c:754 No description found for return value of 'get_net_ns'
Warning: net/core/net_namespace.c:1424 No description found for return value of 'register_pernet_subsys'
Warning: net/core/net_namespace.c:1470 No description found for return value of 'register_pernet_device'

Warnings before: 3 after: 3