From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Wed, 18 Jul 2018 09:25:18 -0700
Subject: IB/IPoIB: Simplify ib_post_(send|recv|srq_recv)() calls
Patch-mainline: v4.19-rc1
Git-commit: 4b4671a0f26917a85085020ed47a0c6e41edf128
References: bsc#1103992 FATE#326009

Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/ulp/ipoib/ipoib_cm.c |   13 ++++---------
 drivers/infiniband/ulp/ipoib/ipoib_ib.c |    6 ++----
 2 files changed, 6 insertions(+), 13 deletions(-)

--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -94,7 +94,6 @@ static void ipoib_cm_dma_unmap_rx(struct
 static int ipoib_cm_post_receive_srq(struct net_device *dev, int id)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
-	struct ib_recv_wr *bad_wr;
 	int i, ret;
 
 	priv->cm.rx_wr.wr_id = id | IPOIB_OP_CM | IPOIB_OP_RECV;
@@ -102,7 +101,7 @@ static int ipoib_cm_post_receive_srq(str
 	for (i = 0; i < priv->cm.num_frags; ++i)
 		priv->cm.rx_sge[i].addr = priv->cm.srq_ring[id].mapping[i];
 
-	ret = ib_post_srq_recv(priv->cm.srq, &priv->cm.rx_wr, &bad_wr);
+	ret = ib_post_srq_recv(priv->cm.srq, &priv->cm.rx_wr, NULL);
 	if (unlikely(ret)) {
 		ipoib_warn(priv, "post srq failed for buf %d (%d)\n", id, ret);
 		ipoib_cm_dma_unmap_rx(priv, priv->cm.num_frags - 1,
@@ -120,7 +119,6 @@ static int ipoib_cm_post_receive_nonsrq(
 					struct ib_sge *sge, int id)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
-	struct ib_recv_wr *bad_wr;
 	int i, ret;
 
 	wr->wr_id = id | IPOIB_OP_CM | IPOIB_OP_RECV;
@@ -128,7 +126,7 @@ static int ipoib_cm_post_receive_nonsrq(
 	for (i = 0; i < IPOIB_CM_RX_SG; ++i)
 		sge[i].addr = rx->rx_ring[id].mapping[i];
 
-	ret = ib_post_recv(rx->qp, wr, &bad_wr);
+	ret = ib_post_recv(rx->qp, wr, NULL);
 	if (unlikely(ret)) {
 		ipoib_warn(priv, "post recv failed for buf %d (%d)\n", id, ret);
 		ipoib_cm_dma_unmap_rx(priv, IPOIB_CM_RX_SG - 1,
@@ -212,7 +210,6 @@ static void ipoib_cm_free_rx_ring(struct
 
 static void ipoib_cm_start_rx_drain(struct ipoib_dev_priv *priv)
 {
-	struct ib_send_wr *bad_wr;
 	struct ipoib_cm_rx *p;
 
 	/* We only reserved 1 extra slot in CQ for drain WRs, so
@@ -227,7 +224,7 @@ static void ipoib_cm_start_rx_drain(stru
 	 */
 	p = list_entry(priv->cm.rx_flush_list.next, typeof(*p), list);
 	ipoib_cm_rx_drain_wr.wr_id = IPOIB_CM_RX_DRAIN_WRID;
-	if (ib_post_send(p->qp, &ipoib_cm_rx_drain_wr, &bad_wr))
+	if (ib_post_send(p->qp, &ipoib_cm_rx_drain_wr, NULL))
 		ipoib_warn(priv, "failed to post drain wr\n");
 
 	list_splice_init(&priv->cm.rx_flush_list, &priv->cm.rx_drain_list);
@@ -698,13 +695,11 @@ static inline int post_send(struct ipoib
 			    unsigned int wr_id,
 			    struct ipoib_tx_buf *tx_req)
 {
-	struct ib_send_wr *bad_wr;
-
 	ipoib_build_sge(priv, tx_req);
 
 	priv->tx_wr.wr.wr_id	= wr_id | IPOIB_OP_CM;
 
-	return ib_post_send(tx->qp, &priv->tx_wr.wr, &bad_wr);
+	return ib_post_send(tx->qp, &priv->tx_wr.wr, NULL);
 }
 
 void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_tx *tx)
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -101,7 +101,6 @@ static void ipoib_ud_dma_unmap_rx(struct
 static int ipoib_ib_post_receive(struct net_device *dev, int id)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
-	struct ib_recv_wr *bad_wr;
 	int ret;
 
 	priv->rx_wr.wr_id   = id | IPOIB_OP_RECV;
@@ -109,7 +108,7 @@ static int ipoib_ib_post_receive(struct
 	priv->rx_sge[1].addr = priv->rx_ring[id].mapping[1];
 
 
-	ret = ib_post_recv(priv->qp, &priv->rx_wr, &bad_wr);
+	ret = ib_post_recv(priv->qp, &priv->rx_wr, NULL);
 	if (unlikely(ret)) {
 		ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret);
 		ipoib_ud_dma_unmap_rx(priv, priv->rx_ring[id].mapping);
@@ -542,7 +541,6 @@ static inline int post_send(struct ipoib
 			    struct ipoib_tx_buf *tx_req,
 			    void *head, int hlen)
 {
-	struct ib_send_wr *bad_wr;
 	struct sk_buff *skb = tx_req->skb;
 
 	ipoib_build_sge(priv, tx_req);
@@ -559,7 +557,7 @@ static inline int post_send(struct ipoib
 	} else
 		priv->tx_wr.wr.opcode	= IB_WR_SEND;
 
-	return ib_post_send(priv->qp, &priv->tx_wr.wr, &bad_wr);
+	return ib_post_send(priv->qp, &priv->tx_wr.wr, NULL);
 }
 
 int ipoib_send(struct net_device *dev, struct sk_buff *skb,