crypto: echainiv - Move IV seeding into init function

[linux-drm-fsl-dcu.git] / crypto / echainiv.c

diff --git a/crypto/echainiv.c b/crypto/echainiv.c
index 62a817faec8c4d47858ea1b542ca8647ff0c42ef..08d33367801d090bb49d1cc44fcc87931f98cefb 100644 (file)
--- a/crypto/echainiv.c
+++ b/crypto/echainiv.c
@@ -187,29 +187,6 @@ static int echainiv_decrypt(struct aead_request *req)
        return crypto_aead_decrypt(subreq);
 }
 
-static int echainiv_encrypt_first(struct aead_request *req)
-{
-       struct crypto_aead *geniv = crypto_aead_reqtfm(req);
-       struct echainiv_ctx *ctx = crypto_aead_ctx(geniv);
-       int err = 0;
-
-       spin_lock_bh(&ctx->geniv.lock);
-       if (geniv->encrypt != echainiv_encrypt_first)
-               goto unlock;
-
-       geniv->encrypt = echainiv_encrypt;
-       err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
-                                  crypto_aead_ivsize(geniv));
-
-unlock:
-       spin_unlock_bh(&ctx->geniv.lock);
-
-       if (err)
-               return err;
-
-       return echainiv_encrypt(req);
-}
-
 static int echainiv_init(struct crypto_tfm *tfm)
 {
        struct crypto_aead *geniv = __crypto_aead_cast(tfm);
@@ -220,6 +197,11 @@ static int echainiv_init(struct crypto_tfm *tfm)
 
        crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));
 
+       err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
+                                  crypto_aead_ivsize(geniv));
+       if (err)
+               goto out;
+
        ctx->null = crypto_get_default_null_skcipher();
        err = PTR_ERR(ctx->null);
        if (IS_ERR(ctx->null))
@@ -272,7 +254,7 @@ static int echainiv_aead_create(struct crypto_template *tmpl,
            inst->alg.ivsize > MAX_IV_SIZE)
                goto free_inst;
 
-       inst->alg.encrypt = echainiv_encrypt_first;
+       inst->alg.encrypt = echainiv_encrypt;
        inst->alg.decrypt = echainiv_decrypt;
 
        inst->alg.base.cra_init = echainiv_init;