crypto: ccp - AES CFB mode is a stream cipher

CFB mode should be treated as a stream cipher, not block.

Fixes: 63b945091a ('crypto: ccp - CCP device driver and interface support')

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccp/ccp-ops.c

@@ -1,7 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * AMD Cryptographic Coprocessor (CCP) driver
  *
- * Copyright (C) 2013,2018 Advanced Micro Devices, Inc.
+ * Copyright (C) 2013-2019 Advanced Micro Devices, Inc.
  *
  * Author: Tom Lendacky <thomas.lendacky@amd.com>
  * Author: Gary R Hook <gary.hook@amd.com>
@@ -893,8 +894,7 @@ static int ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
 		return -EINVAL;
 
 	if (((aes->mode == CCP_AES_MODE_ECB) ||
-	     (aes->mode == CCP_AES_MODE_CBC) ||
-	     (aes->mode == CCP_AES_MODE_CFB)) &&
+	     (aes->mode == CCP_AES_MODE_CBC)) &&
 	    (aes->src_len & (AES_BLOCK_SIZE - 1)))
 		return -EINVAL;