[net:master 27/28] net/sctp/offload.c:39:33: sparse: warning: incorrect type in argument 2 (different base types)

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master
head:   af98c5a78517c04adb5fd68bb64b1ad6fe3d473f
commit: fc228abc2347e106a44c0e9b29ab70b712c4ca51 [27/28] sctp: call 
gso_reset_checksum when computing checksum in sctp_gso_segment
reproduce:
        # apt-get install sparse
        git checkout fc228abc2347e106a44c0e9b29ab70b712c4ca51
        make ARCH=x86_64 allmodconfig
        make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

All warnings (new ones prefixed by >>):

>> net/sctp/offload.c:39:33: sparse: warning: incorrect type in argument 2 
>> (different base types)
   net/sctp/offload.c:39:33: sparse:    expected restricted __wsum [usertype] 
res
   net/sctp/offload.c:39:33: sparse:    got int

sparse warnings: (new ones prefixed by >>)

   net/sctp/offload.c:39:33: sparse: warning: incorrect type in argument 2 
(different base types)
>> net/sctp/offload.c:39:33: sparse:    expected restricted __wsum [usertype] 
>> res
>> net/sctp/offload.c:39:33: sparse:    got int

vim +39 net/sctp/offload.c

    34  
    35  static __le32 sctp_gso_make_checksum(struct sk_buff *skb)
    36  {
    37          skb->ip_summed = CHECKSUM_NONE;
    38          skb->csum_not_inet = 0;
  > 39          gso_reset_checksum(skb, ~0);
    40          return sctp_compute_cksum(skb, skb_transport_offset(skb));
    41  }
    42  

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