[PATCH] CIFS: convert to use le32_add_cpu()

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>

Convert cpu_to_le32(le32_to_cpu(E1) + E2) to use le32_add_cpu().

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
---
 fs/cifs/smb2pdu.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index abc9c28..4ce66bc 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -939,9 +939,7 @@ add_lease_context(struct kvec *iov, unsigned int *num_iovec, __u8 *oplock)
 		req->CreateContextsOffset = cpu_to_le32(
 				sizeof(struct smb2_create_req) - 4 +
 				iov[num - 1].iov_len);
-	req->CreateContextsLength = cpu_to_le32(
-				le32_to_cpu(req->CreateContextsLength) +
-				sizeof(struct create_lease));
+	le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_lease));
 	inc_rfc1001_len(&req->hdr, sizeof(struct create_lease));
 	*num_iovec = num + 1;
 	return 0;
@@ -967,9 +965,7 @@ add_durable_context(struct kvec *iov, unsigned int *num_iovec,
 		req->CreateContextsOffset =
 			cpu_to_le32(sizeof(struct smb2_create_req) - 4 +
 								iov[1].iov_len);
-	req->CreateContextsLength =
-			cpu_to_le32(le32_to_cpu(req->CreateContextsLength) +
-						sizeof(struct create_durable));
+	le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable));
 	inc_rfc1001_len(&req->hdr, sizeof(struct create_durable));
 	*num_iovec = num + 1;
 	return 0;