crypto: drop mask=CRYPTO_ALG_ASYNC from 'shash' tfm allocations

'shash' algorithms are always synchronous, so passing CRYPTO_ALG_ASYNC
in the mask to crypto_alloc_shash() has no effect.  Many users therefore
already don't pass it, but some still do.  This inconsistency can cause
confusion, especially since the way the 'mask' argument works is
somewhat counterintuitive.

Thus, just remove the unneeded CRYPTO_ALG_ASYNC flags.

This patch shouldn't change any actual behavior.
Signed-off-by: NEric Biggers <ebiggers@google.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

drivers/block/drbd/drbd_receiver.c

@@ -3623,7 +3623,7 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
 		 * change.
 		 */
 
-		peer_integrity_tfm = crypto_alloc_shash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
+		peer_integrity_tfm = crypto_alloc_shash(integrity_alg, 0, 0);
 		if (IS_ERR(peer_integrity_tfm)) {
 			peer_integrity_tfm = NULL;
 			drbd_err(connection, "peer data-integrity-alg %s not supported\n",

drivers/md/dm-integrity.c

@@ -2804,7 +2804,7 @@ static int get_mac(struct crypto_shash **hash, struct alg_spec *a, char **error,
 	int r;
 
 	if (a->alg_string) {
-		*hash = crypto_alloc_shash(a->alg_string, 0, CRYPTO_ALG_ASYNC);
+		*hash = crypto_alloc_shash(a->alg_string, 0, 0);
 		if (IS_ERR(*hash)) {
 			*error = error_alg;
 			r = PTR_ERR(*hash);

drivers/net/wireless/intersil/orinoco/mic.c

@@ -16,8 +16,7 @@
 /********************************************************************/
 int orinoco_mic_init(struct orinoco_private *priv)
 {
-	priv->tx_tfm_mic = crypto_alloc_shash("michael_mic", 0,
-					      CRYPTO_ALG_ASYNC);
+	priv->tx_tfm_mic = crypto_alloc_shash("michael_mic", 0, 0);
 	if (IS_ERR(priv->tx_tfm_mic)) {
 		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
 		       "crypto API michael_mic\n");
@@ -25,8 +24,7 @@ int orinoco_mic_init(struct orinoco_private *priv)
 		return -ENOMEM;
 	}
 
-	priv->rx_tfm_mic = crypto_alloc_shash("michael_mic", 0,
-					      CRYPTO_ALG_ASYNC);
+	priv->rx_tfm_mic = crypto_alloc_shash("michael_mic", 0, 0);
 	if (IS_ERR(priv->rx_tfm_mic)) {
 		printk(KERN_DEBUG "orinoco_mic_init: could not allocate "
 		       "crypto API michael_mic\n");

fs/ubifs/auth.c

@@ -269,8 +269,7 @@ int ubifs_init_authentication(struct ubifs_info *c)
 		goto out;
 	}
 
-	c->hash_tfm = crypto_alloc_shash(c->auth_hash_name, 0,
-					 CRYPTO_ALG_ASYNC);
+	c->hash_tfm = crypto_alloc_shash(c->auth_hash_name, 0, 0);
 	if (IS_ERR(c->hash_tfm)) {
 		err = PTR_ERR(c->hash_tfm);
 		ubifs_err(c, "Can not allocate %s: %d",
@@ -286,7 +285,7 @@ int ubifs_init_authentication(struct ubifs_info *c)
 		goto out_free_hash;
 	}
 
-	c->hmac_tfm = crypto_alloc_shash(hmac_name, 0, CRYPTO_ALG_ASYNC);
+	c->hmac_tfm = crypto_alloc_shash(hmac_name, 0, 0);
 	if (IS_ERR(c->hmac_tfm)) {
 		err = PTR_ERR(c->hmac_tfm);
 		ubifs_err(c, "Can not allocate %s: %d", hmac_name, err);

net/bluetooth/smp.c

@@ -3912,7 +3912,7 @@ int __init bt_selftest_smp(void)
 		return PTR_ERR(tfm_aes);
 	}
 
-	tfm_cmac = crypto_alloc_shash("cmac(aes)", 0, CRYPTO_ALG_ASYNC);
+	tfm_cmac = crypto_alloc_shash("cmac(aes)", 0, 0);
 	if (IS_ERR(tfm_cmac)) {
 		BT_ERR("Unable to create CMAC crypto context");
 		crypto_free_cipher(tfm_aes);

security/apparmor/crypto.c

@@ -112,7 +112,7 @@ static int __init init_profile_hash(void)
 	if (!apparmor_initialized)
 		return 0;
 
-	tfm = crypto_alloc_shash("sha1", 0, CRYPTO_ALG_ASYNC);
+	tfm = crypto_alloc_shash("sha1", 0, 0);
 	if (IS_ERR(tfm)) {
 		int error = PTR_ERR(tfm);
 		AA_ERROR("failed to setup profile sha1 hashing: %d\n", error);

security/integrity/evm/evm_crypto.c

@@ -97,8 +97,7 @@ static struct shash_desc *init_desc(char type, uint8_t hash_algo)
 		mutex_lock(&mutex);
 		if (*tfm)
 			goto out;
-		*tfm = crypto_alloc_shash(algo, 0,
-					  CRYPTO_ALG_ASYNC | CRYPTO_NOLOAD);
+		*tfm = crypto_alloc_shash(algo, 0, CRYPTO_NOLOAD);
 		if (IS_ERR(*tfm)) {
 			rc = PTR_ERR(*tfm);
 			pr_err("Can not allocate %s (reason: %ld)\n", algo, rc);

security/keys/encrypted-keys/encrypted.c

@@ -342,7 +342,7 @@ static int calc_hmac(u8 *digest, const u8 *key, unsigned int keylen,
 	struct crypto_shash *tfm;
 	int err;
 
-	tfm = crypto_alloc_shash(hmac_alg, 0, CRYPTO_ALG_ASYNC);
+	tfm = crypto_alloc_shash(hmac_alg, 0, 0);
 	if (IS_ERR(tfm)) {
 		pr_err("encrypted_key: can't alloc %s transform: %ld\n",
 		       hmac_alg, PTR_ERR(tfm));
@@ -984,7 +984,7 @@ static int __init init_encrypted(void)
 {
 	int ret;
 
-	hash_tfm = crypto_alloc_shash(hash_alg, 0, CRYPTO_ALG_ASYNC);
+	hash_tfm = crypto_alloc_shash(hash_alg, 0, 0);
 	if (IS_ERR(hash_tfm)) {
 		pr_err("encrypted_key: can't allocate %s transform: %ld\n",
 		       hash_alg, PTR_ERR(hash_tfm));

security/keys/trusted.c

@@ -1199,14 +1199,14 @@ static int __init trusted_shash_alloc(void)
 {
 	int ret;
 
-	hmacalg = crypto_alloc_shash(hmac_alg, 0, CRYPTO_ALG_ASYNC);
+	hmacalg = crypto_alloc_shash(hmac_alg, 0, 0);
 	if (IS_ERR(hmacalg)) {
 		pr_info("trusted_key: could not allocate crypto %s\n",
 			hmac_alg);
 		return PTR_ERR(hmacalg);
 	}
 
-	hashalg = crypto_alloc_shash(hash_alg, 0, CRYPTO_ALG_ASYNC);
+	hashalg = crypto_alloc_shash(hash_alg, 0, 0);
 	if (IS_ERR(hashalg)) {
 		pr_info("trusted_key: could not allocate crypto %s\n",
 			hash_alg);