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From:   Haiyang Zhang <haiyangz@linuxonhyperv.com>
To:     davem@davemloft.net, netdev@vger.kernel.org
Cc:     haiyangz@microsoft.com, kys@microsoft.com, sthemmin@microsoft.com,
        olaf@aepfle.de, vkuznets@redhat.com, devel@linuxdriverproject.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH net-next] hv_netvsc: Clean up extra parameter from rndis_filter_receive_data()
Date:   Fri, 30 Mar 2018 13:57:59 -0700
Message-Id: <20180330205759.31055-1-haiyangz@linuxonhyperv.com>
Reply-To: haiyangz@microsoft.com
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Haiyang Zhang <haiyangz@microsoft.com>

The variables, msg and data, have the same value. This patch removes
the extra one.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/net/hyperv/rndis_filter.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 4a4952363e8a..e2b68d9328a7 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -365,14 +365,15 @@ static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type)
 
 static int rndis_filter_receive_data(struct net_device *ndev,
 				     struct netvsc_device *nvdev,
-				     struct rndis_message *msg,
 				     struct vmbus_channel *channel,
-				     void *data, u32 data_buflen)
+				     struct rndis_message *msg,
+				     u32 data_buflen)
 {
 	struct rndis_packet *rndis_pkt = &msg->msg.pkt;
 	const struct ndis_tcp_ip_checksum_info *csum_info;
 	const struct ndis_pkt_8021q_info *vlan;
 	u32 data_offset;
+	void *data;
 
 	/* Remove the rndis header and pass it back up the stack */
 	data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset;
@@ -393,14 +394,15 @@ static int rndis_filter_receive_data(struct net_device *ndev,
 
 	vlan = rndis_get_ppi(rndis_pkt, IEEE_8021Q_INFO);
 
+	csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO);
+
+	data = (void *)msg + data_offset;
+
 	/*
 	 * Remove the rndis trailer padding from rndis packet message
 	 * rndis_pkt->data_len tell us the real data length, we only copy
 	 * the data packet to the stack, without the rndis trailer padding
 	 */
-	data = (void *)((unsigned long)data + data_offset);
-	csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO);
-
 	return netvsc_recv_callback(ndev, nvdev, channel,
 				    data, rndis_pkt->data_len,
 				    csum_info, vlan);
@@ -419,8 +421,8 @@ int rndis_filter_receive(struct net_device *ndev,
 
 	switch (rndis_msg->ndis_msg_type) {
 	case RNDIS_MSG_PACKET:
-		return rndis_filter_receive_data(ndev, net_dev, rndis_msg,
-						 channel, data, buflen);
+		return rndis_filter_receive_data(ndev, net_dev, channel,
+						 rndis_msg, buflen);
 	case RNDIS_MSG_INIT_C:
 	case RNDIS_MSG_QUERY_C:
 	case RNDIS_MSG_SET_C:
-- 
2.15.1