crypto: authencesn - Only access common skcipher fields on spawn

As skcipher spawns may be of the type lskcipher, only the common
fields may be accessed.  This was already the case but use the
correct helpers to make this more obvious.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/authencesn.c b/crypto/authencesn.c
index 91424e791d5c77ccc9105bcc3fa54e8d4f92fa4c..60e9568f023f6ea62cb11be440f977dc49b298dc 100644 (file)
--- a/crypto/authencesn.c
+++ b/crypto/authencesn.c
@@ -390,9 +390,9 @@ static int crypto_authenc_esn_create(struct crypto_template *tmpl,
        u32 mask;
        struct aead_instance *inst;
        struct authenc_esn_instance_ctx *ctx;
+       struct skcipher_alg_common *enc;
        struct hash_alg_common *auth;
        struct crypto_alg *auth_base;
-       struct skcipher_alg *enc;
        int err;
 
        err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
@@ -415,7 +415,7 @@ static int crypto_authenc_esn_create(struct crypto_template *tmpl,
                                   crypto_attr_alg_name(tb[2]), 0, mask);
        if (err)
                goto err_free_inst;
-       enc = crypto_spawn_skcipher_alg(&ctx->enc);
+       enc = crypto_spawn_skcipher_alg_common(&ctx->enc);
 
        err = -ENAMETOOLONG;
        if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
@@ -435,8 +435,8 @@ static int crypto_authenc_esn_create(struct crypto_template *tmpl,
                                       enc->base.cra_alignmask;
        inst->alg.base.cra_ctxsize = sizeof(struct crypto_authenc_esn_ctx);
 
-       inst->alg.ivsize = crypto_skcipher_alg_ivsize(enc);
-       inst->alg.chunksize = crypto_skcipher_alg_chunksize(enc);
+       inst->alg.ivsize = enc->ivsize;
+       inst->alg.chunksize = enc->chunksize;
        inst->alg.maxauthsize = auth->digestsize;
 
        inst->alg.init = crypto_authenc_esn_init_tfm;