hv_netvsc: Eliminate completion_func from struct hv_netvsc_packet

BugLink: http://bugs.launchpad.net/bugs/1583357

Eliminate completion_func from struct hv_netvsc_packet.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit a429bda3)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

drivers/net/hyperv/hyperv_net.h

@@ -137,7 +137,6 @@ struct hv_netvsc_packet {
 	u8 rmsg_size; /* RNDIS header and PPI size */
 	u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
 	u8 page_buf_cnt;
-	u8 completion_func;
 
 	u16 vlan_tci;
 	u16 q_idx;

drivers/net/hyperv/netvsc_drv.c

@@ -428,9 +428,6 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
 
 	memset(rndis_msg, 0, RNDIS_AND_PPI_SIZE);
 
-	/* Set the completion routine */
-	packet->completion_func = 1;
-
 	isvlan = packet->vlan_tci & VLAN_TAG_PRESENT;
 
 	/* Add the rndis header */

drivers/net/hyperv/rndis_filter.c

@@ -236,7 +236,6 @@ static int rndis_filter_send_request(struct rndis_device *dev,
 			pb[0].len;
 	}
 
-	packet->completion_func = 0;
 	packet->xmit_more = false;
 
 	ret = netvsc_send(dev->net_dev->dev, packet, NULL, &pb, NULL);