1 files changed, 7 insertions, 14 deletions

diff --git a/drivers/crypto/nx/nx-aes-ccm.c b/drivers/crypto/nx/nx-aes-ccm.c
index 3793885f928d..56a0b3a67c33 100644
--- a/drivers/crypto/nx/nx-aes-ccm.c
+++ b/drivers/crypto/nx/nx-aes-ccm.c
@@ -134,7 +134,6 @@ static int generate_b0(u8 *iv, unsigned int assoclen, unsigned int authsize,
 		       unsigned int cryptlen, u8 *b0)
 {
 	unsigned int l, lp, m = authsize;
-	int rc;
 
 	memcpy(b0, iv, 16);
 
@@ -148,9 +147,7 @@ static int generate_b0(u8 *iv, unsigned int assoclen, unsigned int authsize,
 	if (assoclen)
 		*b0 |= 64;
 
-	rc = set_msg_len(b0 + 16 - l, cryptlen, l);
-
-	return rc;
+	return set_msg_len(b0 + 16 - l, cryptlen, l);
 }
 
 static int generate_pat(u8                   *iv,
@@ -220,13 +217,11 @@ static int generate_pat(u8                   *iv,
 		memset(b1, 0, 16);
 		if (assoclen <= 65280) {
 			*(u16 *)b1 = assoclen;
-			scatterwalk_map_and_copy(b1 + 2, req->src, 0,
-					 iauth_len, SCATTERWALK_FROM_SG);
+			memcpy_from_sglist(b1 + 2, req->src, 0, iauth_len);
 		} else {
 			*(u16 *)b1 = (u16)(0xfffe);
 			*(u32 *)&b1[2] = assoclen;
-			scatterwalk_map_and_copy(b1 + 6, req->src, 0,
-					 iauth_len, SCATTERWALK_FROM_SG);
+			memcpy_from_sglist(b1 + 6, req->src, 0, iauth_len);
 		}
 	}
 
@@ -344,9 +339,8 @@ static int ccm_nx_decrypt(struct aead_request   *req,
 	nbytes -= authsize;
 
 	/* copy out the auth tag to compare with later */
-	scatterwalk_map_and_copy(priv->oauth_tag,
-				 req->src, nbytes + req->assoclen, authsize,
-				 SCATTERWALK_FROM_SG);
+	memcpy_from_sglist(priv->oauth_tag, req->src, nbytes + req->assoclen,
+			   authsize);
 
 	rc = generate_pat(iv, req, nx_ctx, authsize, nbytes, assoclen,
 			  csbcpb->cpb.aes_ccm.in_pat_or_b0);
@@ -468,9 +462,8 @@ static int ccm_nx_encrypt(struct aead_request   *req,
 	} while (processed < nbytes);
 
 	/* copy out the auth tag */
-	scatterwalk_map_and_copy(csbcpb->cpb.aes_ccm.out_pat_or_mac,
-				 req->dst, nbytes + req->assoclen, authsize,
-				 SCATTERWALK_TO_SG);
+	memcpy_to_sglist(req->dst, nbytes + req->assoclen,
+			 csbcpb->cpb.aes_ccm.out_pat_or_mac, authsize);
 
 out:
 	spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);