[PATCH 26/28] crypto: api - Add crypto_inst_setname

[Herbert Xu]

This patch adds the helper crypto_inst_setname because the current
helper crypto_alloc_instance2 is no longer useful given that we
now look up the algorithm after we allocate the instance object.

Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
---

 crypto/algapi.c         |   24 +++++++++++++++++-------
 include/crypto/algapi.h |    2 ++
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 731255a..df939b5 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -811,6 +811,21 @@ int crypto_attr_u32(struct rtattr *rta, u32 *num)
 }
 EXPORT_SYMBOL_GPL(crypto_attr_u32);
 
+int crypto_inst_setname(struct crypto_instance *inst, const char *name,
+                       struct crypto_alg *alg)
+{
+       if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name,
+                    alg->cra_name) >= CRYPTO_MAX_ALG_NAME)
+               return -ENAMETOOLONG;
+
+       if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)",
+                    name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
+               return -ENAMETOOLONG;
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_inst_setname);
+
 void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
                             unsigned int head)
 {
@@ -825,13 +840,8 @@ void *crypto_alloc_instance2(const char *name, struct 
crypto_alg *alg,
 
        inst = (void *)(p + head);
 
-       err = -ENAMETOOLONG;
-       if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", name,
-                    alg->cra_name) >= CRYPTO_MAX_ALG_NAME)
-               goto err_free_inst;
-
-       if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s(%s)",
-                    name, alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
+       err = crypto_inst_setname(inst, name, alg);
+       if (err)
                goto err_free_inst;
 
        return p;
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index eeafd21..0483f65 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -244,6 +244,8 @@ static inline struct crypto_alg *crypto_attr_alg(struct 
rtattr *rta,
 }
 
 int crypto_attr_u32(struct rtattr *rta, u32 *num);
+int crypto_inst_setname(struct crypto_instance *inst, const char *name,
+                       struct crypto_alg *alg);
 void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg,
                             unsigned int head);
 struct crypto_instance *crypto_alloc_instance(const char *name,
--
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