[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>
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@@ -99,12 +99,13 @@ static int crypto_ecb_init_tfm(struct crypto_tfm *tfm)
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struct crypto_instance *inst = (void *)tfm->__crt_alg;
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struct crypto_spawn *spawn = crypto_instance_ctx(inst);
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struct crypto_ecb_ctx *ctx = crypto_tfm_ctx(tfm);
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struct crypto_cipher *cipher;
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tfm = crypto_spawn_tfm(spawn);
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if (IS_ERR(tfm))
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return PTR_ERR(tfm);
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cipher = crypto_spawn_cipher(spawn);
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if (IS_ERR(cipher))
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return PTR_ERR(cipher);
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ctx->child = crypto_cipher_cast(tfm);
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ctx->child = cipher;
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return 0;
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}
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