linux-kernel - Re: [PATCH v3] poly1305: generic C can be faster on chips with slow unaligned access

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Date:   Sun, 13 Nov 2016 07:27:54 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     kbuild-all@...org, Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        Martin Willi <martin@...ongswan.org>,
        Eric Biggers <ebiggers@...gle.com>,
        René van Dorst <opensource@...rst.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>
Subject: Re: [PATCH v3] poly1305: generic C can be faster on chips with slow
 unaligned access

Hi Jason,

[auto build test ERROR on cryptodev/master]
[also build test ERROR on v4.9-rc4 next-20161111]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Jason-A-Donenfeld/poly1305-generic-C-can-be-faster-on-chips-with-slow-unaligned-access/20161108-053912
base:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
config: openrisc-allmodconfig (attached as .config)
compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1
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=openrisc 

All errors (new ones prefixed by >>):

   crypto/poly1305_generic.c: In function 'poly1305_setrkey':
>> crypto/poly1305_generic.c:63:2: error: implicit declaration of function 'get_unaligned_le32'

vim +/get_unaligned_le32 +63 crypto/poly1305_generic.c

    57	}
    58	EXPORT_SYMBOL_GPL(crypto_poly1305_setkey);
    59	
    60	static void poly1305_setrkey(struct poly1305_desc_ctx *dctx, const u8 *key)
    61	{
    62		/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
  > 63		dctx->r[0] = (get_unaligned_le32(key +  0) >> 0) & 0x3ffffff;
    64		dctx->r[1] = (get_unaligned_le32(key +  3) >> 2) & 0x3ffff03;
    65		dctx->r[2] = (get_unaligned_le32(key +  6) >> 4) & 0x3ffc0ff;
    66		dctx->r[3] = (get_unaligned_le32(key +  9) >> 6) & 0x3f03fff;

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