crypto: marvell - Forbid 2-key 3DES in FIPS mode

This patch forbids the use of 2-key 3DES (K1 == K3) in FIPS mode.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/marvell/cipher.c

@@ -299,13 +299,12 @@ static int mv_cesa_des_setkey(struct crypto_skcipher *cipher, const u8 *key,
 static int mv_cesa_des3_ede_setkey(struct crypto_skcipher *cipher,
 				   const u8 *key, unsigned int len)
 {
-	struct crypto_tfm *tfm = crypto_skcipher_tfm(cipher);
-	struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct mv_cesa_des_ctx *ctx = crypto_skcipher_ctx(cipher);
+	int err;
 
-	if (len != DES3_EDE_KEY_SIZE) {
-		crypto_skcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
-		return -EINVAL;
-	}
+	err = des3_verify_key(cipher, key);
+	if (unlikely(err))
+		return err;
 
 	memcpy(ctx->key, key, DES3_EDE_KEY_SIZE);