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crypto: shash - Move null setkey check to registration time 

This patch moves the run-time null setkey check to shash_prepare_alg
just like we did for finup/digest.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2009-07-11 22:17:39 +08:00
parent 7d02460826
commit 57cfe44bcc
1 changed files with 8 additions and 3 deletions
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11
crypto/shash.c
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@ -22,6 +22,12 @@
static const struct crypto_type crypto_shash_type;
static int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
unsigned int keylen)
{
return -ENOSYS;
}
static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key,
unsigned int keylen)
{
@ -50,9 +56,6 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key,
struct shash_alg *shash = crypto_shash_alg(tfm);
unsigned long alignmask = crypto_shash_alignmask(tfm);
if (!shash->setkey)
return -ENOSYS;
if ((unsigned long)key & alignmask)
return shash_setkey_unaligned(tfm, key, keylen);
@ -494,6 +497,8 @@ static int shash_prepare_alg(struct shash_alg *alg)
alg->import = shash_no_import;
if (!alg->export)
alg->export = shash_no_export;
if (!alg->setkey)
alg->setkey = shash_no_setkey;
return 0;
}