Hi Herbert,

[auto build test ERROR on net/master]
[also build test ERROR on v4.4 next-20160122]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Herbert-Xu/crypto-Use-skcipher-and-ahash-shash-where-possible/20160124-212323
config: x86_64-randconfig-x009-201604 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   fs/nfsd/nfs4recover.c: In function 'nfs4_make_rec_clidname':

quoted

fs/nfsd/nfs4recover.c:133:3: error: implicit declaration of function 'shash_desc_zero' [-Werror=implicit-function-declaration]

      shash_desc_zero(desc);
      ^
   cc1: some warnings being treated as errors

vim +/shash_desc_zero +133 fs/nfsd/nfs4recover.c

   127	
   128			desc->tfm = tfm;
   129			desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
   130	
   131			status = crypto_shash_digest(desc, clname->data, clname->len,
   132						     cksum.data);
 > 133			shash_desc_zero(desc);
   134		}
   135	
   136		if (status)

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