[RFC PATCH 8/8] crypto: api - Remove core support for cloning tfms

[Eric Biggers <ebiggers@kernel.org>]

Since all callers of crypto_clone_tfm() have been removed, remove it.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---
 crypto/api.c      | 26 --------------------------
 crypto/internal.h |  2 --
 2 files changed, 28 deletions(-)

diff --git a/crypto/api.c b/crypto/api.c
index 74e17d5049c99..d019d1979857d 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -558,36 +558,10 @@ void *crypto_create_tfm_node(struct crypto_alg *alg,
 out:
 	return mem;
 }
 EXPORT_SYMBOL_GPL(crypto_create_tfm_node);
 
-void *crypto_clone_tfm(const struct crypto_type *frontend,
-		       struct crypto_tfm *otfm)
-{
-	struct crypto_alg *alg = otfm->__crt_alg;
-	struct crypto_tfm *tfm;
-	char *mem;
-
-	mem = ERR_PTR(-ESTALE);
-	if (unlikely(!crypto_mod_get(alg)))
-		goto out;
-
-	mem = crypto_alloc_tfmmem(alg, frontend, otfm->node, GFP_ATOMIC);
-	if (IS_ERR(mem)) {
-		crypto_mod_put(alg);
-		goto out;
-	}
-
-	tfm = (struct crypto_tfm *)(mem + frontend->tfmsize);
-	tfm->crt_flags = otfm->crt_flags;
-	tfm->fb = tfm;
-
-out:
-	return mem;
-}
-EXPORT_SYMBOL_GPL(crypto_clone_tfm);
-
 struct crypto_alg *crypto_find_alg(const char *alg_name,
 				   const struct crypto_type *frontend,
 				   u32 type, u32 mask)
 {
 	if (frontend) {
diff --git a/crypto/internal.h b/crypto/internal.h
index 8fbe0226d48e2..96f84abfac91e 100644
--- a/crypto/internal.h
+++ b/crypto/internal.h
@@ -124,12 +124,10 @@ struct crypto_tfm *__crypto_alloc_tfmgfp(struct crypto_alg *alg, u32 type,
 					 u32 mask, gfp_t gfp);
 struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
 				      u32 mask);
 void *crypto_create_tfm_node(struct crypto_alg *alg,
 			const struct crypto_type *frontend, int node);
-void *crypto_clone_tfm(const struct crypto_type *frontend,
-		       struct crypto_tfm *otfm);
 
 static inline void *crypto_create_tfm(struct crypto_alg *alg,
 			const struct crypto_type *frontend)
 {
 	return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
-- 
2.53.0