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

'cipher' algorithms (single block ciphers) are always synchronous, so
passing CRYPTO_ALG_ASYNC in the mask to crypto_alloc_cipher() 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: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

14 files changed, 19 insertions, 22 deletions

diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 812d9498d97b..dd456725189f 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -137,7 +137,7 @@ static int fallback_init_cip(struct crypto_tfm *tfm)
 	struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
 
 	sctx->fallback.cip = crypto_alloc_cipher(name, 0,
-			CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
+						 CRYPTO_ALG_NEED_FALLBACK);
 
 	if (IS_ERR(sctx->fallback.cip)) {
 		pr_err("Allocating AES fallback algorithm %s failed\n",
diff --git a/drivers/crypto/amcc/crypto4xx_alg.c b/drivers/crypto/amcc/crypto4xx_alg.c
index f5c07498ea4f..4092c2aad8e2 100644
--- a/drivers/crypto/amcc/crypto4xx_alg.c
+++ b/drivers/crypto/amcc/crypto4xx_alg.c
@@ -520,8 +520,7 @@ static int crypto4xx_compute_gcm_hash_key_sw(__le32 *hash_start, const u8 *key,
 	uint8_t src[16] = { 0 };
 	int rc = 0;
 
-	aes_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC |
-				      CRYPTO_ALG_NEED_FALLBACK);
+	aes_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_NEED_FALLBACK);
 	if (IS_ERR(aes_tfm)) {
 		rc = PTR_ERR(aes_tfm);
 		pr_warn("could not load aes cipher driver: %d\n", rc);
diff --git a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
index 3c6fe57f91f8..9108015e56cc 100644
--- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
+++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c
@@ -346,9 +346,7 @@ static int ccp_aes_cmac_cra_init(struct crypto_tfm *tfm)
 
 	crypto_ahash_set_reqsize(ahash, sizeof(struct ccp_aes_cmac_req_ctx));
 
-	cipher_tfm = crypto_alloc_cipher("aes", 0,
-					 CRYPTO_ALG_ASYNC |
-					 CRYPTO_ALG_NEED_FALLBACK);
+	cipher_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_NEED_FALLBACK);
 	if (IS_ERR(cipher_tfm)) {
 		pr_warn("could not load aes cipher driver\n");
 		return PTR_ERR(cipher_tfm);
diff --git a/drivers/crypto/geode-aes.c b/drivers/crypto/geode-aes.c
index eb2a0a73cbed..b4c24a35b3d0 100644
--- a/drivers/crypto/geode-aes.c
+++ b/drivers/crypto/geode-aes.c
@@ -261,7 +261,7 @@ static int fallback_init_cip(struct crypto_tfm *tfm)
 	struct geode_aes_op *op = crypto_tfm_ctx(tfm);
 
 	op->fallback.cip = crypto_alloc_cipher(name, 0,
-				CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
+					       CRYPTO_ALG_NEED_FALLBACK);
 
 	if (IS_ERR(op->fallback.cip)) {
 		printk(KERN_ERR "Error allocating fallback algo %s\n", name);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index b8eec515a003..a7195eb5b8d8 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -377,7 +377,7 @@ static struct crypto_cipher *alloc_essiv_cipher(struct crypt_config *cc,
 	int err;
 
 	/* Setup the essiv_tfm with the given salt */
-	essiv_tfm = crypto_alloc_cipher(cc->cipher, 0, CRYPTO_ALG_ASYNC);
+	essiv_tfm = crypto_alloc_cipher(cc->cipher, 0, 0);
 	if (IS_ERR(essiv_tfm)) {
 		ti->error = "Error allocating crypto tfm for ESSIV";
 		return essiv_tfm;
diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c
index 04dd7a936593..6fab69fe6c92 100644
--- a/drivers/net/wireless/cisco/airo.c
+++ b/drivers/net/wireless/cisco/airo.c
@@ -1359,7 +1359,7 @@ static int micsetup(struct airo_info *ai) {
 	int i;
 
 	if (ai->tfm == NULL)
-	        ai->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+		ai->tfm = crypto_alloc_cipher("aes", 0, 0);
 
         if (IS_ERR(ai->tfm)) {
                 airo_print_err(ai->dev->name, "failed to load transform for AES");
diff --git a/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c b/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
index bc45cf098b04..91871503364d 100644
--- a/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
+++ b/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
@@ -67,7 +67,7 @@ static void *rtllib_ccmp_init(int key_idx)
 		goto fail;
 	priv->key_idx = key_idx;
 
-	priv->tfm = (void *)crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	priv->tfm = (void *)crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(priv->tfm)) {
 		pr_debug("Could not allocate crypto API aes\n");
 		priv->tfm = NULL;
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c
index 041f1b123888..3534ddb900d1 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_ccmp.c
@@ -71,7 +71,7 @@ static void *ieee80211_ccmp_init(int key_idx)
 		goto fail;
 	priv->key_idx = key_idx;
 
-	priv->tfm = (void *)crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	priv->tfm = (void *)crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(priv->tfm)) {
 		pr_debug("ieee80211_crypt_ccmp: could not allocate crypto API aes\n");
 		priv->tfm = NULL;
diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c
index 68ddee86a886..edb7263bff40 100644
--- a/drivers/usb/wusbcore/crypto.c
+++ b/drivers/usb/wusbcore/crypto.c
@@ -316,7 +316,7 @@ ssize_t wusb_prf(void *out, size_t out_size,
 		goto error_setkey_cbc;
 	}
 
-	tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	tfm_aes = crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(tfm_aes)) {
 		result = PTR_ERR(tfm_aes);
 		printk(KERN_ERR "E: can't load AES: %d\n", (int)result);
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index c822e626761b..1f94a25beef6 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -1390,7 +1390,7 @@ static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
 	if (!smp)
 		return NULL;
 
-	smp->tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	smp->tfm_aes = crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(smp->tfm_aes)) {
 		BT_ERR("Unable to create AES crypto context");
 		goto zfree_smp;
@@ -3233,7 +3233,7 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid)
 	if (!smp)
 		return ERR_PTR(-ENOMEM);
 
-	tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	tfm_aes = crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(tfm_aes)) {
 		BT_ERR("Unable to create AES crypto context");
 		kzfree(smp);
@@ -3906,7 +3906,7 @@ int __init bt_selftest_smp(void)
 	struct crypto_kpp *tfm_ecdh;
 	int err;
 
-	tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	tfm_aes = crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(tfm_aes)) {
 		BT_ERR("Unable to create AES crypto context");
 		return PTR_ERR(tfm_aes);
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 73e8f347802e..bfe9ed9f4c48 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -30,13 +30,13 @@ int ieee80211_wep_init(struct ieee80211_local *local)
 	/* start WEP IV from a random value */
 	get_random_bytes(&local->wep_iv, IEEE80211_WEP_IV_LEN);
 
-	local->wep_tx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	local->wep_tx_tfm = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(local->wep_tx_tfm)) {
 		local->wep_rx_tfm = ERR_PTR(-EINVAL);
 		return PTR_ERR(local->wep_tx_tfm);
 	}
 
-	local->wep_rx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	local->wep_rx_tfm = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(local->wep_rx_tfm)) {
 		crypto_free_cipher(local->wep_tx_tfm);
 		local->wep_tx_tfm = ERR_PTR(-EINVAL);
diff --git a/net/wireless/lib80211_crypt_ccmp.c b/net/wireless/lib80211_crypt_ccmp.c
index 6beab0cfcb99..55214fe925b2 100644
--- a/net/wireless/lib80211_crypt_ccmp.c
+++ b/net/wireless/lib80211_crypt_ccmp.c
@@ -75,7 +75,7 @@ static void *lib80211_ccmp_init(int key_idx)
 		goto fail;
 	priv->key_idx = key_idx;
 
-	priv->tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+	priv->tfm = crypto_alloc_cipher("aes", 0, 0);
 	if (IS_ERR(priv->tfm)) {
 		priv->tfm = NULL;
 		goto fail;
diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index b5e235573c8a..35f06563207d 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -99,7 +99,7 @@ static void *lib80211_tkip_init(int key_idx)
 
 	priv->key_idx = key_idx;
 
-	priv->tx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	priv->tx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(priv->tx_tfm_arc4)) {
 		priv->tx_tfm_arc4 = NULL;
 		goto fail;
@@ -111,7 +111,7 @@ static void *lib80211_tkip_init(int key_idx)
 		goto fail;
 	}
 
-	priv->rx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	priv->rx_tfm_arc4 = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(priv->rx_tfm_arc4)) {
 		priv->rx_tfm_arc4 = NULL;
 		goto fail;
diff --git a/net/wireless/lib80211_crypt_wep.c b/net/wireless/lib80211_crypt_wep.c
index 6015f6b542a6..20c1ad63ad44 100644
--- a/net/wireless/lib80211_crypt_wep.c
+++ b/net/wireless/lib80211_crypt_wep.c
@@ -48,13 +48,13 @@ static void *lib80211_wep_init(int keyidx)
 		goto fail;
 	priv->key_idx = keyidx;
 
-	priv->tx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	priv->tx_tfm = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(priv->tx_tfm)) {
 		priv->tx_tfm = NULL;
 		goto fail;
 	}
 
-	priv->rx_tfm = crypto_alloc_cipher("arc4", 0, CRYPTO_ALG_ASYNC);
+	priv->rx_tfm = crypto_alloc_cipher("arc4", 0, 0);
 	if (IS_ERR(priv->rx_tfm)) {
 		priv->rx_tfm = NULL;
 		goto fail;