Hi Thomas,

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Thomas-Falcon/ibmvnic-map-L2-L3-L4-header-descriptors-to-firmware/20160225-033734
config: powerpc-allmodconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

All error/warnings (new ones prefixed by >>):

   drivers/net/ethernet/ibm/ibmvnic.c: In function 'build_hdr_descs_arr':

quoted

drivers/net/ethernet/ibm/ibmvnic.c:712:13: error: implicit declaration of function 'bld_hdr_data' [-Werror=implicit-function-declaration]

     hdr_data = bld_hdr_data(hdr_field, skb, hdr_len, &tot_len);
                ^

quoted

drivers/net/ethernet/ibm/ibmvnic.c:712:11: warning: assignment makes pointer from integer without a cast [-Wint-conversion]

     hdr_data = bld_hdr_data(hdr_field, skb, hdr_len, &tot_len);
              ^
   drivers/net/ethernet/ibm/ibmvnic.c: At top level:
   drivers/net/ethernet/ibm/ibmvnic.c:577:23: warning: 'build_hdr_data' defined but not used [-Wunused-function]
    static unsigned char *build_hdr_data(u8 hdr_field, struct sk_buff *skb,
                          ^
   cc1: some warnings being treated as errors

vim +/bld_hdr_data +712 drivers/net/ethernet/ibm/ibmvnic.c

   706	{
   707		unsigned char *hdr_data;
   708		union sub_crq *entries;
   709		int hdr_len[3] = {0};
   710		int tot_len;
   711	
 > 712		hdr_data = bld_hdr_data(hdr_field, skb, hdr_len, &tot_len);
   713		if (!hdr_data)
   714			return NULL;
   715	

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