[CRYPTO] api: Add type-safe spawns
This patch allows spawns of specific types (e.g., cipher) to be allocated.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/ecb.c b/crypto/ecb.c
index f239aa9..839a0ae 100644
--- a/crypto/ecb.c
+++ b/crypto/ecb.c
@@ -99,12 +99,13 @@
struct crypto_instance *inst = (void *)tfm->__crt_alg;
struct crypto_spawn *spawn = crypto_instance_ctx(inst);
struct crypto_ecb_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct crypto_cipher *cipher;
- tfm = crypto_spawn_tfm(spawn);
- if (IS_ERR(tfm))
- return PTR_ERR(tfm);
+ cipher = crypto_spawn_cipher(spawn);
+ if (IS_ERR(cipher))
+ return PTR_ERR(cipher);
- ctx->child = crypto_cipher_cast(tfm);
+ ctx->child = cipher;
return 0;
}