[RFC PATCH] crypto: brcm - explicitly cast cipher to hash type

[Stefan Agner]

In the AES cases enum spu_cipher_type and enum hash_type have
the same values, so the assignment is fine. Explicitly cast
the enum type conversion.

This fixes two warnings when building with clang:
  drivers/crypto/bcm/cipher.c:821:34: warning: implicit conversion from
      enumeration type 'enum spu_cipher_type' to different enumeration
      type 'enum hash_type' [-Wenum-conversion]
                hash_parms.type = cipher_parms.type;
                                ~ ~~~~~~~~~~~~~^~~~
  drivers/crypto/bcm/cipher.c:1412:26: warning: implicit conversion from
      enumeration type 'enum spu_cipher_type' to different enumeration
      type 'enum hash_type' [-Wenum-conversion]
                hash_parms.type = ctx->cipher_type;
                                ~ ~~~~~^~~~~~~~~~~

Signed-off-by: Stefan Agner <ste...@agner.ch>
---
I am not familar with the IP... I would be glad if somebody with
better insight could have a look whether that patch makes sense.

 drivers/crypto/bcm/cipher.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
index 2b75f95bbe1b..309c67c7012f 100644
--- a/drivers/crypto/bcm/cipher.c
+++ b/drivers/crypto/bcm/cipher.c
@@ -818,7 +818,7 @@ static int handle_ahash_req(struct iproc_reqctx_s *rctx)
 
        /* AES hashing keeps key size in type field, so need to copy it here */
        if (hash_parms.alg == HASH_ALG_AES)
-               hash_parms.type = cipher_parms.type;
+               hash_parms.type = (enum hash_type)cipher_parms.type;
        else
                hash_parms.type = spu->spu_hash_type(rctx->total_sent);
 
@@ -1409,7 +1409,7 @@ static int handle_aead_req(struct iproc_reqctx_s *rctx)
                                                rctx->iv_ctr_len);
 
        if (ctx->auth.alg == HASH_ALG_AES)
-               hash_parms.type = ctx->cipher_type;
+               hash_parms.type = (enum hash_type)ctx->cipher_type;
 
        /* General case AAD padding (CCM and RFC4543 special cases below) */
        aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
-- 
2.16.2