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-x014-201604 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/block/cryptoloop.c: In function 'cryptoloop_transfer':

quoted

drivers/block/cryptoloop.c:167:2: error: implicit declaration of function 'skcipher_request_zero' [-Werror=implicit-function-declaration]

     skcipher_request_zero(req);
     ^
   cc1: some warnings being treated as errors

vim +/skcipher_request_zero +167 drivers/block/cryptoloop.c

   161			out_offs += sz;
   162		}
   163	
   164		err = 0;
   165	
   166	out:
 > 167		skcipher_request_zero(req);
   168		return err;
   169	}
   170	

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