Re: [PATCH 11/12] crypto: inside-secure - hmac(sha256) support

[kbuild test robot]

Hi Antoine,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20180309]
[cannot apply to v4.16-rc4 v4.16-rc3 v4.16-rc2 v4.16-rc5]
[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/Antoine-Tenart/crypto-inside-secure-hmac-sha256-sha224-support/20180318-012349
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/crypto/inside-secure/safexcel_hash.c:481:9: sparse: Variable length array is used.
   drivers/crypto/inside-secure/safexcel_hash.c:979:45: sparse: cast to restricted __le32
   drivers/crypto/inside-secure/safexcel_hash.c:980:45: sparse: cast to restricted __le32
   drivers/crypto/inside-secure/safexcel_hash.c:1166:12: sparse: no member 'digest' in struct safexcel_ahash_ctx
   drivers/crypto/inside-secure/safexcel_hash.c:189:12: sparse: context imbalance in 'safexcel_ahash_send_req' - wrong count at exit
   drivers/crypto/inside-secure/safexcel_hash.c:1166:12: sparse: generating address of non-lvalue (8)
   drivers/crypto/inside-secure/safexcel_hash.c: In function 'safexcel_hmac_sha256_init':
>> drivers/crypto/inside-secure/safexcel_hash.c:1166:5: error: 'struct safexcel_ahash_ctx' has no member named 'digest'
     ctx->digest = CONTEXT_CONTROL_DIGEST_HMAC;
        ^~

sparse warnings: (new ones prefixed by >>)

   drivers/crypto/inside-secure/safexcel_hash.c:481:9: sparse: Variable length array is used.
   drivers/crypto/inside-secure/safexcel_hash.c:979:45: sparse: cast to restricted __le32
   drivers/crypto/inside-secure/safexcel_hash.c:980:45: sparse: cast to restricted __le32
   drivers/crypto/inside-secure/safexcel_hash.c:1166:12: sparse: no member 'digest' in struct safexcel_ahash_ctx
   drivers/crypto/inside-secure/safexcel_hash.c:189:12: sparse: context imbalance in 'safexcel_ahash_send_req' - wrong count at exit
>> drivers/crypto/inside-secure/safexcel_hash.c:1166:12: sparse: generating address of non-lvalue (8)
   drivers/crypto/inside-secure/safexcel_hash.c: In function 'safexcel_hmac_sha256_init':
   drivers/crypto/inside-secure/safexcel_hash.c:1166:5: error: 'struct safexcel_ahash_ctx' has no member named 'digest'
     ctx->digest = CONTEXT_CONTROL_DIGEST_HMAC;
        ^~

vim +1166 drivers/crypto/inside-secure/safexcel_hash.c

  1160	
  1161	static int safexcel_hmac_sha256_init(struct ahash_request *areq)
  1162	{
  1163		struct safexcel_ahash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(areq));
  1164	
  1165		safexcel_sha256_init(areq);
> 1166		ctx->digest = CONTEXT_CONTROL_DIGEST_HMAC;
  1167		return 0;
  1168	}
  1169	

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