[PATCH net-next 2/6] crypto: cipher - Remove crypto_clone_cipher()
From: Eric Biggers <ebiggers@kernel.org>
Date: 2026-05-22 05:31:04
Also in:
linux-crypto, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
Since the only caller of crypto_clone_cipher() was cmac_clone_tfm() which has been removed, remove crypto_clone_cipher() as well. Note that no tests need to be removed, as this function had no tests. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Eric Biggers <ebiggers@kernel.org> --- crypto/cipher.c | 28 ---------------------------- include/crypto/internal/cipher.h | 2 -- 2 files changed, 30 deletions(-)
diff --git a/crypto/cipher.c b/crypto/cipher.c
index 1fe62bf79656..c9dab656a622 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c@@ -87,33 +87,5 @@ void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, u8 *dst, const u8 *src) { cipher_crypt_one(tfm, dst, src, false); } EXPORT_SYMBOL_NS_GPL(crypto_cipher_decrypt_one, "CRYPTO_INTERNAL"); - -struct crypto_cipher *crypto_clone_cipher(struct crypto_cipher *cipher) -{ - struct crypto_tfm *tfm = crypto_cipher_tfm(cipher); - struct crypto_alg *alg = tfm->__crt_alg; - struct crypto_cipher *ncipher; - struct crypto_tfm *ntfm; - - if (alg->cra_init) - return ERR_PTR(-ENOSYS); - - if (unlikely(!crypto_mod_get(alg))) - return ERR_PTR(-ESTALE); - - ntfm = __crypto_alloc_tfmgfp(alg, CRYPTO_ALG_TYPE_CIPHER, - CRYPTO_ALG_TYPE_MASK, GFP_ATOMIC); - if (IS_ERR(ntfm)) { - crypto_mod_put(alg); - return ERR_CAST(ntfm); - } - - ntfm->crt_flags = tfm->crt_flags; - - ncipher = __crypto_cipher_cast(ntfm); - - return ncipher; -} -EXPORT_SYMBOL_GPL(crypto_clone_cipher);
diff --git a/include/crypto/internal/cipher.h b/include/crypto/internal/cipher.h
index 5030f6d2df31..a9174ba90250 100644
--- a/include/crypto/internal/cipher.h
+++ b/include/crypto/internal/cipher.h@@ -174,12 +174,10 @@ void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, * the plaintext and ciphertext buffers are at least one block in size. */ void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, u8 *dst, const u8 *src); -struct crypto_cipher *crypto_clone_cipher(struct crypto_cipher *cipher); - struct crypto_cipher_spawn { struct crypto_spawn base; }; static inline int crypto_grab_cipher(struct crypto_cipher_spawn *spawn,
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2.54.0