crypto: api - Remove instance larval fulfilment

In order to allow testing to complete asynchronously after the
registration process, instance larvals need to complete prior
to having a test result.  Support this by redoing the lookup for
instance larvals after completion.   This should locate the pending
test larval and then repeat the wait on that (if it is still pending).

As the lookup is now repeated there is no longer any need to compute
the fulfilment status and all that code can be removed.

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

1 files changed, 19 insertions, 4 deletions

diff --git a/crypto/api.c b/crypto/api.c
index 22556907b3bc..ffb81aa32725 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -37,6 +37,8 @@ DEFINE_STATIC_KEY_FALSE(__crypto_boot_test_finished);
 #endif
 
 static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg);
+static struct crypto_alg *crypto_alg_lookup(const char *name, u32 type,
+					    u32 mask);
 
 struct crypto_alg *crypto_mod_get(struct crypto_alg *alg)
 {
@@ -201,9 +203,12 @@ static void crypto_start_test(struct crypto_larval *larval)
 
 static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
 {
-	struct crypto_larval *larval = (void *)alg;
+	struct crypto_larval *larval;
 	long time_left;
 
+again:
+	larval = container_of(alg, struct crypto_larval, alg);
+
 	if (!crypto_boot_test_finished())
 		crypto_start_test(larval);
 
@@ -215,9 +220,16 @@ static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
 		alg = ERR_PTR(-EINTR);
 	else if (!time_left)
 		alg = ERR_PTR(-ETIMEDOUT);
-	else if (!alg)
-		alg = ERR_PTR(-ENOENT);
-	else if (IS_ERR(alg))
+	else if (!alg) {
+		u32 type;
+		u32 mask;
+
+		alg = &larval->alg;
+		type = alg->cra_flags & ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD);
+		mask = larval->mask;
+		alg = crypto_alg_lookup(alg->cra_name, type, mask) ?:
+		      ERR_PTR(-ENOENT);
+	} else if (IS_ERR(alg))
 		;
 	else if (crypto_is_test_larval(larval) &&
 		 !(alg->cra_flags & CRYPTO_ALG_TESTED))
@@ -228,6 +240,9 @@ static struct crypto_alg *crypto_larval_wait(struct crypto_alg *alg)
 		alg = ERR_PTR(-EAGAIN);
 	crypto_mod_put(&larval->alg);
 
+	if (!IS_ERR(alg) && crypto_is_larval(alg))
+		goto again;
+
 	return alg;
 }