tree:   
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
head:   49abc0d2e19b28e90f443334fb6cd66f275713e6
commit: 28856a9e52c7cac712af6c143de04766617535dc [95/102] crypto: xts - 
consolidate sanity check for keys
config: arm64-defconfig (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
        git checkout 28856a9e52c7cac712af6c143de04766617535dc
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

Note: the cryptodev/master HEAD 49abc0d2e19b28e90f443334fb6cd66f275713e6 builds 
fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   arch/arm64/crypto/aes-glue.c: In function 'xts_set_key':
>> arch/arm64/crypto/aes-glue.c:88:2: error: implicit declaration of function 
>> 'xts_check_key' [-Werror=implicit-function-declaration]
     ret = xts_check_key(tfm, in_key, key_len);
     ^
   cc1: some warnings being treated as errors

vim +/xts_check_key +88 arch/arm64/crypto/aes-glue.c

    82  static int xts_set_key(struct crypto_tfm *tfm, const u8 *in_key,
    83                         unsigned int key_len)
    84  {
    85          struct crypto_aes_xts_ctx *ctx = crypto_tfm_ctx(tfm);
    86          int ret;
    87  
  > 88          ret = xts_check_key(tfm, in_key, key_len);
    89          if (ret)
    90                  return ret;
    91  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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