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Diffstat (limited to 'crypto/api.c')
-rw-r--r--crypto/api.c34
1 files changed, 16 insertions, 18 deletions
diff --git a/crypto/api.c b/crypto/api.c
index 70a894e52ff3..1d5290c67108 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -193,17 +193,24 @@ static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
return alg;
}
-struct crypto_alg *crypto_alg_lookup(const char *name, u32 type, u32 mask)
+static struct crypto_alg *crypto_alg_lookup(const char *name, u32 type,
+ u32 mask)
{
struct crypto_alg *alg;
+ u32 test = 0;
+
+ if (!((type | mask) & CRYPTO_ALG_TESTED))
+ test |= CRYPTO_ALG_TESTED;
down_read(&crypto_alg_sem);
- alg = __crypto_alg_lookup(name, type, mask);
+ alg = __crypto_alg_lookup(name, type | test, mask | test);
+ if (!alg && test)
+ alg = __crypto_alg_lookup(name, type, mask) ?
+ ERR_PTR(-ELIBBAD) : NULL;
up_read(&crypto_alg_sem);
return alg;
}
-EXPORT_SYMBOL_GPL(crypto_alg_lookup);
static struct crypto_alg *crypto_larval_lookup(const char *name, u32 type,
u32 mask)
@@ -227,10 +234,12 @@ static struct crypto_alg *crypto_larval_lookup(const char *name, u32 type,
alg = crypto_alg_lookup(name, type, mask);
}
- if (alg)
- return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
+ if (!IS_ERR_OR_NULL(alg) && crypto_is_larval(alg))
+ alg = crypto_larval_wait(alg);
+ else if (!alg)
+ alg = crypto_larval_add(name, type, mask);
- return crypto_larval_add(name, type, mask);
+ return alg;
}
int crypto_probing_notify(unsigned long val, void *v)
@@ -253,11 +262,6 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
struct crypto_alg *larval;
int ok;
- if (!((type | mask) & CRYPTO_ALG_TESTED)) {
- type |= CRYPTO_ALG_TESTED;
- mask |= CRYPTO_ALG_TESTED;
- }
-
/*
* If the internal flag is set for a cipher, require a caller to
* to invoke the cipher with the internal flag to use that cipher.
@@ -485,20 +489,14 @@ struct crypto_alg *crypto_find_alg(const char *alg_name,
const struct crypto_type *frontend,
u32 type, u32 mask)
{
- struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask) =
- crypto_alg_mod_lookup;
-
if (frontend) {
type &= frontend->maskclear;
mask &= frontend->maskclear;
type |= frontend->type;
mask |= frontend->maskset;
-
- if (frontend->lookup)
- lookup = frontend->lookup;
}
- return lookup(alg_name, type, mask);
+ return crypto_alg_mod_lookup(alg_name, type, mask);
}
EXPORT_SYMBOL_GPL(crypto_find_alg);