[CRYPTO] api: Get rid of flags argument to setkey

Now that the tfm is passed directly to setkey instead of the ctx, we no
longer need to pass the &tfm->crt_flags pointer.

This patch also gets rid of a few unnecessary checks on the key length
for ciphers as the cipher layer guarantees that the key length is within
the bounds specified by the algorithm.

Rather than testing dia_setkey every time, this patch does it only once
during crypto_alloc_tfm.  The redundant check from crypto_digest_setkey
is also removed.

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

1 files changed, 3 insertions, 2 deletions

diff --git a/crypto/cast6.c b/crypto/cast6.c
index 08e33bfc3ad1..136ab6dfe8c5 100644
--- a/crypto/cast6.c
+++ b/crypto/cast6.c
@@ -382,14 +382,15 @@ static inline void W(u32 *key, unsigned int i) {
 }
 
 static int cast6_setkey(struct crypto_tfm *tfm, const u8 *in_key,
-                        unsigned key_len, u32 *flags)
+                        unsigned key_len)
 {
         int i;
         u32 key[8];
         __be32 p_key[8]; /* padded key */
         struct cast6_ctx *c = crypto_tfm_ctx(tfm);
+        u32 *flags = &tfm->crt_flags;
 
-        if (key_len < 16 || key_len > 32 || key_len % 4 != 0) {
+        if (key_len % 4 != 0) {
                 *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
                 return -EINVAL;
         }