Warnings before patch:
files: ['net/xfrm/xfrm_policy.c', 'net/xfrm/xfrm_interface_core.c', 'net/ipv4/ip_vti.c', 'net/ipv6/ip6_vti.c']
<parse fail>: Warning: net/ipv6/ip6_vti.c:441 No description found for return value of 'vti6_xmit'
<parse fail>: Warning: net/ipv6/ip6_vti.c:708 No description found for return value of 'vti6_tnl_change'
<parse fail>: Warning: net/ipv6/ip6_vti.c:923 No description found for return value of 'vti6_dev_init_gen'
<parse fail>: Warning: net/ipv6/ip6_vti.c:937 No description found for return value of 'vti6_dev_init'
Warning: net/ipv6/ip6_vti.c:441 No description found for return value of 'vti6_xmit'
Warning: net/ipv6/ip6_vti.c:708 No description found for return value of 'vti6_tnl_change'
Warning: net/ipv6/ip6_vti.c:923 No description found for return value of 'vti6_dev_init_gen'
Warning: net/ipv6/ip6_vti.c:937 No description found for return value of 'vti6_dev_init'

Current warnings:
files: ['net/xfrm/xfrm_policy.c', 'net/xfrm/xfrm_interface_core.c', 'net/ipv4/ip_vti.c', 'net/ipv6/ip6_vti.c']
<parse fail>: Warning: net/ipv6/ip6_vti.c:435 No description found for return value of 'vti6_xmit'
<parse fail>: Warning: net/ipv6/ip6_vti.c:702 No description found for return value of 'vti6_tnl_change'
<parse fail>: Warning: net/ipv6/ip6_vti.c:917 No description found for return value of 'vti6_dev_init_gen'
<parse fail>: Warning: net/ipv6/ip6_vti.c:931 No description found for return value of 'vti6_dev_init'
Warning: net/ipv6/ip6_vti.c:435 No description found for return value of 'vti6_xmit'
Warning: net/ipv6/ip6_vti.c:702 No description found for return value of 'vti6_tnl_change'
Warning: net/ipv6/ip6_vti.c:917 No description found for return value of 'vti6_dev_init_gen'
Warning: net/ipv6/ip6_vti.c:931 No description found for return value of 'vti6_dev_init'

Warnings before: 4 after: 4