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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-12 13:17:47 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-18 17:35:44 +0800 |
| commit | 499a66e6b689b13d1a4108bec5d7dcdc829a27a8 (patch) | |
| tree | ed98f2e025b852471cb02386029ae6eaffd12eb9 /crypto | |
| parent | da721302a78807e5da2902677fbe116fe052068f (diff) | |
| download | linux-stable-499a66e6b689b13d1a4108bec5d7dcdc829a27a8.tar.gz linux-stable-499a66e6b689b13d1a4108bec5d7dcdc829a27a8.tar.bz2 linux-stable-499a66e6b689b13d1a4108bec5d7dcdc829a27a8.zip | |
crypto: null - Remove default null blkcipher
The default null blkcipher is no longer used and can now be removed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/crypto_null.c | 49 |
1 files changed, 6 insertions, 43 deletions
diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c index c3f683910d07..20ff2c746e0b 100644 --- a/crypto/crypto_null.c +++ b/crypto/crypto_null.c @@ -26,10 +26,8 @@ #include <linux/string.h> static DEFINE_MUTEX(crypto_default_null_skcipher_lock); -static struct crypto_blkcipher *crypto_default_null_skcipher; +static struct crypto_skcipher *crypto_default_null_skcipher; static int crypto_default_null_skcipher_refcnt; -static struct crypto_skcipher *crypto_default_null_skcipher2; -static int crypto_default_null_skcipher2_refcnt; static int null_compress(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) @@ -155,15 +153,16 @@ MODULE_ALIAS_CRYPTO("compress_null"); MODULE_ALIAS_CRYPTO("digest_null"); MODULE_ALIAS_CRYPTO("cipher_null"); -struct crypto_blkcipher *crypto_get_default_null_skcipher(void) +struct crypto_skcipher *crypto_get_default_null_skcipher(void) { - struct crypto_blkcipher *tfm; + struct crypto_skcipher *tfm; mutex_lock(&crypto_default_null_skcipher_lock); tfm = crypto_default_null_skcipher; if (!tfm) { - tfm = crypto_alloc_blkcipher("ecb(cipher_null)", 0, 0); + tfm = crypto_alloc_skcipher("ecb(cipher_null)", + 0, CRYPTO_ALG_ASYNC); if (IS_ERR(tfm)) goto unlock; @@ -183,49 +182,13 @@ void crypto_put_default_null_skcipher(void) { mutex_lock(&crypto_default_null_skcipher_lock); if (!--crypto_default_null_skcipher_refcnt) { - crypto_free_blkcipher(crypto_default_null_skcipher); + crypto_free_skcipher(crypto_default_null_skcipher); crypto_default_null_skcipher = NULL; } mutex_unlock(&crypto_default_null_skcipher_lock); } EXPORT_SYMBOL_GPL(crypto_put_default_null_skcipher); -struct crypto_skcipher *crypto_get_default_null_skcipher2(void) -{ - struct crypto_skcipher *tfm; - - mutex_lock(&crypto_default_null_skcipher_lock); - tfm = crypto_default_null_skcipher2; - - if (!tfm) { - tfm = crypto_alloc_skcipher("ecb(cipher_null)", - 0, CRYPTO_ALG_ASYNC); - if (IS_ERR(tfm)) - goto unlock; - - crypto_default_null_skcipher2 = tfm; - } - - crypto_default_null_skcipher2_refcnt++; - -unlock: - mutex_unlock(&crypto_default_null_skcipher_lock); - - return tfm; -} -EXPORT_SYMBOL_GPL(crypto_get_default_null_skcipher2); - -void crypto_put_default_null_skcipher2(void) -{ - mutex_lock(&crypto_default_null_skcipher_lock); - if (!--crypto_default_null_skcipher2_refcnt) { - crypto_free_skcipher(crypto_default_null_skcipher2); - crypto_default_null_skcipher2 = NULL; - } - mutex_unlock(&crypto_default_null_skcipher_lock); -} -EXPORT_SYMBOL_GPL(crypto_put_default_null_skcipher2); - static int __init crypto_null_mod_init(void) { int ret = 0; |