Merge branch 'next' into for-linus

22 files changed, 155 insertions, 203 deletions

diff --git a/drivers/infiniband/hw/amso1100/c2.c b/drivers/infiniband/hw/amso1100/c2.c
index dc85d777578e..0cfc455630d0 100644
--- a/drivers/infiniband/hw/amso1100/c2.c
+++ b/drivers/infiniband/hw/amso1100/c2.c
@@ -47,6 +47,7 @@
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
 #include <linux/slab.h>
+#include <linux/prefetch.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 3216bcad7e82..0a5008fbebac 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -338,8 +338,9 @@ static struct rtable *find_route(struct t3cdev *dev, __be32 local_ip,
 				 __be16 peer_port, u8 tos)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
-	rt = ip_route_output_ports(&init_net, NULL, peer_ip, local_ip,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
 				   tos, 0);
 	if (IS_ERR(rt))
@@ -913,7 +914,7 @@ static void process_mpa_reply(struct iwch_ep *ep, struct sk_buff *skb)
 		goto err;
 
 	if (peer2peer && iwch_rqes_posted(ep->com.qp) == 0) {
-		iwch_post_zb_read(ep->com.qp);
+		iwch_post_zb_read(ep);
 	}
 
 	goto out;
@@ -1077,6 +1078,8 @@ static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
 	struct iwch_ep *ep = ctx;
 	struct cpl_wr_ack *hdr = cplhdr(skb);
 	unsigned int credits = ntohs(hdr->credits);
+	unsigned long flags;
+	int post_zb = 0;
 
 	PDBG("%s ep %p credits %u\n", __func__, ep, credits);
 
@@ -1086,28 +1089,34 @@ static int tx_ack(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
 		return CPL_RET_BUF_DONE;
 	}
 
+	spin_lock_irqsave(&ep->com.lock, flags);
 	BUG_ON(credits != 1);
 	dst_confirm(ep->dst);
 	if (!ep->mpa_skb) {
 		PDBG("%s rdma_init wr_ack ep %p state %u\n",
-			__func__, ep, state_read(&ep->com));
+			__func__, ep, ep->com.state);
 		if (ep->mpa_attr.initiator) {
 			PDBG("%s initiator ep %p state %u\n",
-				__func__, ep, state_read(&ep->com));
-			if (peer2peer)
-				iwch_post_zb_read(ep->com.qp);
+				__func__, ep, ep->com.state);
+			if (peer2peer && ep->com.state == FPDU_MODE)
+				post_zb = 1;
 		} else {
 			PDBG("%s responder ep %p state %u\n",
-				__func__, ep, state_read(&ep->com));
-			ep->com.rpl_done = 1;
-			wake_up(&ep->com.waitq);
+				__func__, ep, ep->com.state);
+			if (ep->com.state == MPA_REQ_RCVD) {
+				ep->com.rpl_done = 1;
+				wake_up(&ep->com.waitq);
+			}
 		}
 	} else {
 		PDBG("%s lsm ack ep %p state %u freeing skb\n",
-			__func__, ep, state_read(&ep->com));
+			__func__, ep, ep->com.state);
 		kfree_skb(ep->mpa_skb);
 		ep->mpa_skb = NULL;
 	}
+	spin_unlock_irqrestore(&ep->com.lock, flags);
+	if (post_zb)
+		iwch_post_zb_read(ep);
 	return CPL_RET_BUF_DONE;
 }
 
diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.h b/drivers/infiniband/hw/cxgb3/iwch_provider.h
index c5406da3f4cd..9a342c9b220d 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.h
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.h
@@ -332,7 +332,7 @@ int iwch_bind_mw(struct ib_qp *qp,
 			     struct ib_mw_bind *mw_bind);
 int iwch_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
 int iwch_post_terminate(struct iwch_qp *qhp, struct respQ_msg_t *rsp_msg);
-int iwch_post_zb_read(struct iwch_qp *qhp);
+int iwch_post_zb_read(struct iwch_ep *ep);
 int iwch_register_device(struct iwch_dev *dev);
 void iwch_unregister_device(struct iwch_dev *dev);
 void stop_read_rep_timer(struct iwch_qp *qhp);
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index 1b4cd09f74dc..ecd313f359a4 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -738,7 +738,7 @@ static inline void build_term_codes(struct respQ_msg_t *rsp_msg,
 	}
 }
 
-int iwch_post_zb_read(struct iwch_qp *qhp)
+int iwch_post_zb_read(struct iwch_ep *ep)
 {
 	union t3_wr *wqe;
 	struct sk_buff *skb;
@@ -761,10 +761,10 @@ int iwch_post_zb_read(struct iwch_qp *qhp)
 	wqe->read.local_len = cpu_to_be32(0);
 	wqe->read.local_to = cpu_to_be64(1);
 	wqe->send.wrh.op_seop_flags = cpu_to_be32(V_FW_RIWR_OP(T3_WR_READ));
-	wqe->send.wrh.gen_tid_len = cpu_to_be32(V_FW_RIWR_TID(qhp->ep->hwtid)|
+	wqe->send.wrh.gen_tid_len = cpu_to_be32(V_FW_RIWR_TID(ep->hwtid)|
 						V_FW_RIWR_LEN(flit_cnt));
 	skb->priority = CPL_PRIORITY_DATA;
-	return iwch_cxgb3_ofld_send(qhp->rhp->rdev.t3cdev_p, skb);
+	return iwch_cxgb3_ofld_send(ep->com.qp->rhp->rdev.t3cdev_p, skb);
 }
 
 /*
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 9d8dcfab2b38..f660cd04ec2f 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -315,8 +315,9 @@ static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip,
 				 __be16 peer_port, u8 tos)
 {
 	struct rtable *rt;
+	struct flowi4 fl4;
 
-	rt = ip_route_output_ports(&init_net, NULL, peer_ip, local_ip,
+	rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
 				   peer_port, local_port, IPPROTO_TCP,
 				   tos, 0);
 	if (IS_ERR(rt))
@@ -1198,9 +1199,7 @@ static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
 	}
 	PDBG("%s ep %p status %d error %d\n", __func__, ep,
 	     rpl->status, status2errno(rpl->status));
-	ep->com.wr_wait.ret = status2errno(rpl->status);
-	ep->com.wr_wait.done = 1;
-	wake_up(&ep->com.wr_wait.wait);
+	c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
 
 	return 0;
 }
@@ -1234,9 +1233,7 @@ static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
 	struct c4iw_listen_ep *ep = lookup_stid(t, stid);
 
 	PDBG("%s ep %p\n", __func__, ep);
-	ep->com.wr_wait.ret = status2errno(rpl->status);
-	ep->com.wr_wait.done = 1;
-	wake_up(&ep->com.wr_wait.wait);
+	c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
 	return 0;
 }
 
@@ -1466,7 +1463,7 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
 	struct c4iw_qp_attributes attrs;
 	int disconnect = 1;
 	int release = 0;
-	int closing = 0;
+	int abort = 0;
 	struct tid_info *t = dev->rdev.lldi.tids;
 	unsigned int tid = GET_TID(hdr);
 
@@ -1492,23 +1489,22 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
 		 * in rdma connection migration (see c4iw_accept_cr()).
 		 */
 		__state_set(&ep->com, CLOSING);
-		ep->com.wr_wait.done = 1;
-		ep->com.wr_wait.ret = -ECONNRESET;
 		PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
-		wake_up(&ep->com.wr_wait.wait);
+		c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
 		break;
 	case MPA_REP_SENT:
 		__state_set(&ep->com, CLOSING);
-		ep->com.wr_wait.done = 1;
-		ep->com.wr_wait.ret = -ECONNRESET;
 		PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
-		wake_up(&ep->com.wr_wait.wait);
+		c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
 		break;
 	case FPDU_MODE:
 		start_ep_timer(ep);
 		__state_set(&ep->com, CLOSING);
-		closing = 1;
+		attrs.next_state = C4IW_QP_STATE_CLOSING;
+		abort = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+				       C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
 		peer_close_upcall(ep);
+		disconnect = 1;
 		break;
 	case ABORTING:
 		disconnect = 0;
@@ -1536,11 +1532,6 @@ static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
 		BUG_ON(1);
 	}
 	mutex_unlock(&ep->com.mutex);
-	if (closing) {
-		attrs.next_state = C4IW_QP_STATE_CLOSING;
-		c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
-			       C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
-	}
 	if (disconnect)
 		c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
 	if (release)
@@ -1581,9 +1572,7 @@ static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
 	/*
 	 * Wake up any threads in rdma_init() or rdma_fini().
 	 */
-	ep->com.wr_wait.done = 1;
-	ep->com.wr_wait.ret = -ECONNRESET;
-	wake_up(&ep->com.wr_wait.wait);
+	c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
 
 	mutex_lock(&ep->com.mutex);
 	switch (ep->com.state) {
@@ -1710,14 +1699,14 @@ static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
 	ep = lookup_tid(t, tid);
 	BUG_ON(!ep);
 
-	if (ep->com.qp) {
+	if (ep && ep->com.qp) {
 		printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
 		       ep->com.qp->wq.sq.qid);
 		attrs.next_state = C4IW_QP_STATE_TERMINATE;
 		c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
 			       C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
 	} else
-		printk(KERN_WARNING MOD "TERM received tid %u no qp\n", tid);
+		printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
 
 	return 0;
 }
@@ -2296,14 +2285,8 @@ static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
 		ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
 		wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
 		PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
-		if (wr_waitp) {
-			if (ret)
-				wr_waitp->ret = -ret;
-			else
-				wr_waitp->ret = 0;
-			wr_waitp->done = 1;
-			wake_up(&wr_waitp->wait);
-		}
+		if (wr_waitp)
+			c4iw_wake_up(wr_waitp, ret ? -ret : 0);
 		kfree_skb(skb);
 		break;
 	case 2:
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index e29172c2afcb..40a13cc633a3 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -44,7 +44,7 @@ MODULE_DESCRIPTION("Chelsio T4 RDMA Driver");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(DRV_VERSION);
 
-static LIST_HEAD(dev_list);
+static LIST_HEAD(uld_ctx_list);
 static DEFINE_MUTEX(dev_mutex);
 
 static struct dentry *c4iw_debugfs_root;
@@ -370,18 +370,23 @@ static void c4iw_rdev_close(struct c4iw_rdev *rdev)
 	c4iw_destroy_resource(&rdev->resource);
 }
 
-static void c4iw_remove(struct c4iw_dev *dev)
+struct uld_ctx {
+	struct list_head entry;
+	struct cxgb4_lld_info lldi;
+	struct c4iw_dev *dev;
+};
+
+static void c4iw_remove(struct uld_ctx *ctx)
 {
-	PDBG("%s c4iw_dev %p\n", __func__,  dev);
-	list_del(&dev->entry);
-	if (dev->registered)
-		c4iw_unregister_device(dev);
-	c4iw_rdev_close(&dev->rdev);
-	idr_destroy(&dev->cqidr);
-	idr_destroy(&dev->qpidr);
-	idr_destroy(&dev->mmidr);
-	iounmap(dev->rdev.oc_mw_kva);
-	ib_dealloc_device(&dev->ibdev);
+	PDBG("%s c4iw_dev %p\n", __func__,  ctx->dev);
+	c4iw_unregister_device(ctx->dev);
+	c4iw_rdev_close(&ctx->dev->rdev);
+	idr_destroy(&ctx->dev->cqidr);
+	idr_destroy(&ctx->dev->qpidr);
+	idr_destroy(&ctx->dev->mmidr);
+	iounmap(ctx->dev->rdev.oc_mw_kva);
+	ib_dealloc_device(&ctx->dev->ibdev);
+	ctx->dev = NULL;
 }
 
 static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
@@ -392,7 +397,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
 	devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp));
 	if (!devp) {
 		printk(KERN_ERR MOD "Cannot allocate ib device\n");
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 	}
 	devp->rdev.lldi = *infop;
 
@@ -402,27 +407,23 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
 	devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa,
 					       devp->rdev.lldi.vr->ocq.size);
 
-	printk(KERN_INFO MOD "ocq memory: "
+	PDBG(KERN_INFO MOD "ocq memory: "
 	       "hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n",
 	       devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size,
 	       devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva);
 
-	mutex_lock(&dev_mutex);
-
 	ret = c4iw_rdev_open(&devp->rdev);
 	if (ret) {
 		mutex_unlock(&dev_mutex);
 		printk(KERN_ERR MOD "Unable to open CXIO rdev err %d\n", ret);
 		ib_dealloc_device(&devp->ibdev);
-		return NULL;
+		return ERR_PTR(ret);
 	}
 
 	idr_init(&devp->cqidr);
 	idr_init(&devp->qpidr);
 	idr_init(&devp->mmidr);
 	spin_lock_init(&devp->lock);
-	list_add_tail(&devp->entry, &dev_list);
-	mutex_unlock(&dev_mutex);
 
 	if (c4iw_debugfs_root) {
 		devp->debugfs_root = debugfs_create_dir(
@@ -435,7 +436,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
 
 static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
 {
-	struct c4iw_dev *dev;
+	struct uld_ctx *ctx;
 	static int vers_printed;
 	int i;
 
@@ -443,25 +444,33 @@ static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
 		printk(KERN_INFO MOD "Chelsio T4 RDMA Driver - version %s\n",
 		       DRV_VERSION);
 
-	dev = c4iw_alloc(infop);
-	if (!dev)
+	ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
+	if (!ctx) {
+		ctx = ERR_PTR(-ENOMEM);
 		goto out;
+	}
+	ctx->lldi = *infop;
 
 	PDBG("%s found device %s nchan %u nrxq %u ntxq %u nports %u\n",
-	     __func__, pci_name(dev->rdev.lldi.pdev),
-	     dev->rdev.lldi.nchan, dev->rdev.lldi.nrxq,
-	     dev->rdev.lldi.ntxq, dev->rdev.lldi.nports);
+	     __func__, pci_name(ctx->lldi.pdev),
+	     ctx->lldi.nchan, ctx->lldi.nrxq,
+	     ctx->lldi.ntxq, ctx->lldi.nports);
+
+	mutex_lock(&dev_mutex);
+	list_add_tail(&ctx->entry, &uld_ctx_list);
+	mutex_unlock(&dev_mutex);
 
-	for (i = 0; i < dev->rdev.lldi.nrxq; i++)
-		PDBG("rxqid[%u] %u\n", i, dev->rdev.lldi.rxq_ids[i]);
+	for (i = 0; i < ctx->lldi.nrxq; i++)
+		PDBG("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]);
 out:
-	return dev;
+	return ctx;
 }
 
 static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp,
 			const struct pkt_gl *gl)
 {
-	struct c4iw_dev *dev = handle;
+	struct uld_ctx *ctx = handle;
+	struct c4iw_dev *dev = ctx->dev;
 	struct sk_buff *skb;
 	const struct cpl_act_establish *rpl;
 	unsigned int opcode;
@@ -503,47 +512,49 @@ nomem:
 
 static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state)
 {
-	struct c4iw_dev *dev = handle;
+	struct uld_ctx *ctx = handle;
 
 	PDBG("%s new_state %u\n", __func__, new_state);
 	switch (new_state) {
 	case CXGB4_STATE_UP:
-		printk(KERN_INFO MOD "%s: Up\n", pci_name(dev->rdev.lldi.pdev));
-		if (!dev->registered) {
-			int ret;
-			ret = c4iw_register_device(dev);
-			if (ret)
+		printk(KERN_INFO MOD "%s: Up\n", pci_name(ctx->lldi.pdev));
+		if (!ctx->dev) {
+			int ret = 0;
+
+			ctx->dev = c4iw_alloc(&ctx->lldi);
+			if (!IS_ERR(ctx->dev))
+				ret = c4iw_register_device(ctx->dev);
+			if (IS_ERR(ctx->dev) || ret)
 				printk(KERN_ERR MOD
 				       "%s: RDMA registration failed: %d\n",
-				       pci_name(dev->rdev.lldi.pdev), ret);
+				       pci_name(ctx->lldi.pdev), ret);
 		}
 		break;
 	case CXGB4_STATE_DOWN:
 		printk(KERN_INFO MOD "%s: Down\n",
-		       pci_name(dev->rdev.lldi.pdev));
-		if (dev->registered)
-			c4iw_unregister_device(dev);
+		       pci_name(ctx->lldi.pdev));
+		if (ctx->dev)
+			c4iw_remove(ctx);
 		break;
 	case CXGB4_STATE_START_RECOVERY:
 		printk(KERN_INFO MOD "%s: Fatal Error\n",
-		       pci_name(dev->rdev.lldi.pdev));
-		dev->rdev.flags |= T4_FATAL_ERROR;
-		if (dev->registered) {
+		       pci_name(ctx->lldi.pdev));
+		if (ctx->dev) {
 			struct ib_event event;
 
+			ctx->dev->rdev.flags |= T4_FATAL_ERROR;
 			memset(&event, 0, sizeof event);
 			event.event  = IB_EVENT_DEVICE_FATAL;
-			event.device = &dev->ibdev;
+			event.device = &ctx->dev->ibdev;
 			ib_dispatch_event(&event);
-			c4iw_unregister_device(dev);
+			c4iw_remove(ctx);
 		}
 		break;
 	case CXGB4_STATE_DETACH:
 		printk(KERN_INFO MOD "%s: Detach\n",
-		       pci_name(dev->rdev.lldi.pdev));
-		mutex_lock(&dev_mutex);
-		c4iw_remove(dev);
-		mutex_unlock(&dev_mutex);
+		       pci_name(ctx->lldi.pdev));
+		if (ctx->dev)
+			c4iw_remove(ctx);
 		break;
 	}
 	return 0;
@@ -576,11 +587,13 @@ static int __init c4iw_init_module(void)
 
 static void __exit c4iw_exit_module(void)
 {
-	struct c4iw_dev *dev, *tmp;
+	struct uld_ctx *ctx, *tmp;
 
 	mutex_lock(&dev_mutex);
-	list_for_each_entry_safe(dev, tmp, &dev_list, entry) {
-		c4iw_remove(dev);
+	list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) {
+		if (ctx->dev)
+			c4iw_remove(ctx);
+		kfree(ctx);
 	}
 	mutex_unlock(&dev_mutex);
 	cxgb4_unregister_uld(CXGB4_ULD_RDMA);
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 9f6166f59268..4f045375c8e2 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -35,7 +35,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/idr.h>
-#include <linux/workqueue.h>
+#include <linux/completion.h>
 #include <linux/netdevice.h>
 #include <linux/sched.h>
 #include <linux/pci.h>
@@ -132,16 +132,20 @@ static inline int c4iw_num_stags(struct c4iw_rdev *rdev)
 #define C4IW_WR_TO (10*HZ)
 
 struct c4iw_wr_wait {
-	wait_queue_head_t wait;
-	int done;
+	struct completion completion;
 	int ret;
 };
 
 static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
 {
 	wr_waitp->ret = 0;
-	wr_waitp->done = 0;
-	init_waitqueue_head(&wr_waitp->wait);
+	init_completion(&wr_waitp->completion);
+}
+
+static inline void c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret)
+{
+	wr_waitp->ret = ret;
+	complete(&wr_waitp->completion);
 }
 
 static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev,
@@ -150,23 +154,27 @@ static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev,
 				 const char *func)
 {
 	unsigned to = C4IW_WR_TO;
-	do {
+	int ret;
 
-		wait_event_timeout(wr_waitp->wait, wr_waitp->done, to);
-		if (!wr_waitp->done) {
+	do {
+		ret = wait_for_completion_timeout(&wr_waitp->completion, to);
+		if (!ret) {
 			printk(KERN_ERR MOD "%s - Device %s not responding - "
 			       "tid %u qpid %u\n", func,
 			       pci_name(rdev->lldi.pdev), hwtid, qpid);
+			if (c4iw_fatal_error(rdev)) {
+				wr_waitp->ret = -EIO;
+				break;
+			}
 			to = to << 2;
 		}
-	} while (!wr_waitp->done);
+	} while (!ret);
 	if (wr_waitp->ret)
-		printk(KERN_WARNING MOD "%s: FW reply %d tid %u qpid %u\n",
-		       pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid);
+		PDBG("%s: FW reply %d tid %u qpid %u\n",
+		     pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid);
 	return wr_waitp->ret;
 }
 
-
 struct c4iw_dev {
 	struct ib_device ibdev;
 	struct c4iw_rdev rdev;
@@ -175,9 +183,7 @@ struct c4iw_dev {
 	struct idr qpidr;
 	struct idr mmidr;
 	spinlock_t lock;
-	struct list_head entry;
 	struct dentry *debugfs_root;
-	u8 registered;
 };
 
 static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev)
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index f66dd8bf5128..5b9e4220ca08 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -516,7 +516,6 @@ int c4iw_register_device(struct c4iw_dev *dev)
 		if (ret)
 			goto bail2;
 	}
-	dev->registered = 1;
 	return 0;
 bail2:
 	ib_unregister_device(&dev->ibdev);
@@ -535,6 +534,5 @@ void c4iw_unregister_device(struct c4iw_dev *dev)
 				   c4iw_class_attributes[i]);
 	ib_unregister_device(&dev->ibdev);
 	kfree(dev->ibdev.iwcm);
-	dev->registered = 0;
 	return;
 }
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 70a5a3c646da..3b773b05a898 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -214,7 +214,7 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
 		V_FW_RI_RES_WR_HOSTFCMODE(0) |	/* no host cidx updates */
 		V_FW_RI_RES_WR_CPRIO(0) |	/* don't keep in chip cache */
 		V_FW_RI_RES_WR_PCIECHN(0) |	/* set by uP at ri_init time */
-		t4_sq_onchip(&wq->sq) ? F_FW_RI_RES_WR_ONCHIP : 0 |
+		(t4_sq_onchip(&wq->sq) ? F_FW_RI_RES_WR_ONCHIP : 0) |
 		V_FW_RI_RES_WR_IQID(scq->cqid));
 	res->u.sqrq.dcaen_to_eqsize = cpu_to_be32(
 		V_FW_RI_RES_WR_DCAEN(0) |
@@ -1210,7 +1210,6 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
 			if (ret) {
 				if (internal)
 					c4iw_get_ep(&qhp->ep->com);
-				disconnect = abort = 1;
 				goto err;
 			}
 			break;
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index 24af12fc8228..c0221eec8817 100644
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/drivers/infiniband/hw/cxgb4/t4.h
@@ -269,11 +269,8 @@ struct t4_swsqe {
 
 static inline pgprot_t t4_pgprot_wc(pgprot_t prot)
 {
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64)
 	return pgprot_writecombine(prot);
-#elif defined(CONFIG_PPC64)
-	return __pgprot((pgprot_val(prot) | _PAGE_NO_CACHE) &
-			~(pgprot_t)_PAGE_GUARDED);
 #else
 	return pgprot_noncached(prot);
 #endif
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index 58c0e417bc30..be24ac726114 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -398,7 +398,6 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
 	struct ipath_devdata *dd;
 	unsigned long long addr;
 	u32 bar0 = 0, bar1 = 0;
-	u8 rev;
 
 	dd = ipath_alloc_devdata(pdev);
 	if (IS_ERR(dd)) {
@@ -540,13 +539,7 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
 		goto bail_regions;
 	}
 
-	ret = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-	if (ret) {
-		ipath_dev_err(dd, "Failed to read PCI revision ID unit "
-			      "%u: err %d\n", dd->ipath_unit, -ret);
-		goto bail_regions;	/* shouldn't ever happen */
-	}
-	dd->ipath_pcirev = rev;
+	dd->ipath_pcirev = pdev->revision;
 
 #if defined(__powerpc__)
 	/* There isn't a generic way to specify writethrough mappings */
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 13de1192927c..2d668c69f6d9 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -1138,7 +1138,9 @@ static ssize_t nes_store_wqm_quanta(struct device_driver *ddp,
 	u32 i = 0;
 	struct nes_device *nesdev;
 
-	strict_strtoul(buf, 0, &wqm_quanta_value);
+	if (kstrtoul(buf, 0, &wqm_quanta_value) < 0)
+		return -EINVAL;
+
 	list_for_each_entry(nesdev, &nes_dev_list, list) {
 		if (i == ee_flsh_adapter) {
 			nesdev->nesadapter->wqm_quanta = wqm_quanta_value;
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 33c7eedaba6c..e74cdf9ef471 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -2563,7 +2563,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
 	u16 last_ae;
 	u8 original_hw_tcp_state;
 	u8 original_ibqp_state;
-	enum iw_cm_event_status disconn_status = IW_CM_EVENT_STATUS_OK;
+	int disconn_status = 0;
 	int issue_disconn = 0;
 	int issue_close = 0;
 	int issue_flush = 0;
@@ -2605,7 +2605,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
 			(last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET))) {
 		issue_disconn = 1;
 		if (last_ae == NES_AEQE_AEID_LLP_CONNECTION_RESET)
-			disconn_status = IW_CM_EVENT_STATUS_RESET;
+			disconn_status = -ECONNRESET;
 	}
 
 	if (((original_hw_tcp_state == NES_AEQE_TCP_STATE_CLOSED) ||
@@ -2666,7 +2666,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
 			cm_id->provider_data = nesqp;
 			/* Send up the close complete event */
 			cm_event.event = IW_CM_EVENT_CLOSE;
-			cm_event.status = IW_CM_EVENT_STATUS_OK;
+			cm_event.status = 0;
 			cm_event.provider_data = cm_id->provider_data;
 			cm_event.local_addr = cm_id->local_addr;
 			cm_event.remote_addr = cm_id->remote_addr;
@@ -2966,7 +2966,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 	nes_add_ref(&nesqp->ibqp);
 
 	cm_event.event = IW_CM_EVENT_ESTABLISHED;
-	cm_event.status = IW_CM_EVENT_STATUS_ACCEPTED;
+	cm_event.status = 0;
 	cm_event.provider_data = (void *)nesqp;
 	cm_event.local_addr = cm_id->local_addr;
 	cm_event.remote_addr = cm_id->remote_addr;
@@ -3377,7 +3377,7 @@ static void cm_event_connected(struct nes_cm_event *event)
 
 	/* notify OF layer we successfully created the requested connection */
 	cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
-	cm_event.status = IW_CM_EVENT_STATUS_ACCEPTED;
+	cm_event.status = 0;
 	cm_event.provider_data = cm_id->provider_data;
 	cm_event.local_addr.sin_family = AF_INET;
 	cm_event.local_addr.sin_port = cm_id->local_addr.sin_port;
@@ -3484,7 +3484,7 @@ static void cm_event_reset(struct nes_cm_event *event)
 	nesqp->cm_id = NULL;
 	/* cm_id->provider_data = NULL; */
 	cm_event.event = IW_CM_EVENT_DISCONNECT;
-	cm_event.status = IW_CM_EVENT_STATUS_RESET;
+	cm_event.status = -ECONNRESET;
 	cm_event.provider_data = cm_id->provider_data;
 	cm_event.local_addr = cm_id->local_addr;
 	cm_event.remote_addr = cm_id->remote_addr;
@@ -3495,7 +3495,7 @@ static void cm_event_reset(struct nes_cm_event *event)
 	ret = cm_id->event_handler(cm_id, &cm_event);
 	atomic_inc(&cm_closes);
 	cm_event.event = IW_CM_EVENT_CLOSE;
-	cm_event.status = IW_CM_EVENT_STATUS_OK;
+	cm_event.status = 0;
 	cm_event.provider_data = cm_id->provider_data;
 	cm_event.local_addr = cm_id->local_addr;
 	cm_event.remote_addr = cm_id->remote_addr;
@@ -3534,7 +3534,7 @@ static void cm_event_mpa_req(struct nes_cm_event *event)
 			cm_node, cm_id, jiffies);
 
 	cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
-	cm_event.status = IW_CM_EVENT_STATUS_OK;
+	cm_event.status = 0;
 	cm_event.provider_data = (void *)cm_node;
 
 	cm_event.local_addr.sin_family = AF_INET;
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index 10d0a5ec9add..96fa9a4cafdf 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -2885,9 +2885,8 @@ void nes_nic_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
 					if ((cqe_errv &
 							(NES_NIC_ERRV_BITS_IPV4_CSUM_ERR | NES_NIC_ERRV_BITS_TCPUDP_CSUM_ERR |
 							NES_NIC_ERRV_BITS_IPH_ERR | NES_NIC_ERRV_BITS_WQE_OVERRUN)) == 0) {
-						if (nesvnic->rx_checksum_disabled == 0) {
+						if (nesvnic->netdev->features & NETIF_F_RXCSUM)
 							rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
-						}
 					} else
 						nes_debug(NES_DBG_CQ, "%s: unsuccessfully checksummed TCP or UDP packet."
 								" errv = 0x%X, pkt_type = 0x%X.\n",
@@ -2897,7 +2896,7 @@ void nes_nic_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
 					if ((cqe_errv &
 							(NES_NIC_ERRV_BITS_IPV4_CSUM_ERR | NES_NIC_ERRV_BITS_IPH_ERR |
 							NES_NIC_ERRV_BITS_WQE_OVERRUN)) == 0) {
-						if (nesvnic->rx_checksum_disabled == 0) {
+						if (nesvnic->netdev->features & NETIF_F_RXCSUM) {
 							rx_skb->ip_summed = CHECKSUM_UNNECESSARY;
 							/* nes_debug(NES_DBG_CQ, "%s: Reporting successfully checksummed IPv4 packet.\n",
 								  nesvnic->netdev->name); */
diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index d2abe07133a5..91594116f947 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/drivers/infiniband/hw/nes/nes_hw.h
@@ -1245,7 +1245,6 @@ struct nes_vnic {
 	u8  next_qp_nic_index;
 	u8  of_device_registered;
 	u8  rdma_enabled;
-	u8  rx_checksum_disabled;
 	u32 lro_max_aggr;
 	struct net_lro_mgr lro_mgr;
 	struct net_lro_desc lro_desc[NES_MAX_LRO_DESCRIPTORS];
diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index e96b8fb5d44c..d3a1c41cfd27 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -1093,34 +1093,6 @@ static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
 };
 #define NES_ETHTOOL_STAT_COUNT  ARRAY_SIZE(nes_ethtool_stringset)
 
-/**
- * nes_netdev_get_rx_csum
- */
-static u32 nes_netdev_get_rx_csum (struct net_device *netdev)
-{
-	struct nes_vnic *nesvnic = netdev_priv(netdev);
-
-	if (nesvnic->rx_checksum_disabled)
-		return 0;
-	else
-		return 1;
-}
-
-
-/**
- * nes_netdev_set_rc_csum
- */
-static int nes_netdev_set_rx_csum(struct net_device *netdev, u32 enable)
-{
-	struct nes_vnic *nesvnic = netdev_priv(netdev);
-
-	if (enable)
-		nesvnic->rx_checksum_disabled = 0;
-	else
-		nesvnic->rx_checksum_disabled = 1;
-	return 0;
-}
-
 
 /**
  * nes_netdev_get_sset_count
@@ -1521,7 +1493,7 @@ static int nes_netdev_get_settings(struct net_device *netdev, struct ethtool_cmd
 	et_cmd->maxrxpkt = 511;
 
 	if (nesadapter->OneG_Mode) {
-		et_cmd->speed = SPEED_1000;
+		ethtool_cmd_speed_set(et_cmd, SPEED_1000);
 		if (phy_type == NES_PHY_TYPE_PUMA_1G) {
 			et_cmd->supported   = SUPPORTED_1000baseT_Full;
 			et_cmd->advertising = ADVERTISED_1000baseT_Full;
@@ -1560,7 +1532,7 @@ static int nes_netdev_get_settings(struct net_device *netdev, struct ethtool_cmd
 		et_cmd->advertising = ADVERTISED_10000baseT_Full;
 		et_cmd->phy_address = mac_index;
 	}
-	et_cmd->speed = SPEED_10000;
+	ethtool_cmd_speed_set(et_cmd, SPEED_10000);
 	et_cmd->autoneg = AUTONEG_DISABLE;
 	return 0;
 }
@@ -1598,19 +1570,10 @@ static int nes_netdev_set_settings(struct net_device *netdev, struct ethtool_cmd
 }
 
 
-static int nes_netdev_set_flags(struct net_device *netdev, u32 flags)
-{
-	return ethtool_op_set_flags(netdev, flags, ETH_FLAG_LRO);
-}
-
-
 static const struct ethtool_ops nes_ethtool_ops = {
 	.get_link = ethtool_op_get_link,
 	.get_settings = nes_netdev_get_settings,
 	.set_settings = nes_netdev_set_settings,
-	.get_tx_csum = ethtool_op_get_tx_csum,
-	.get_rx_csum = nes_netdev_get_rx_csum,
-	.get_sg = ethtool_op_get_sg,
 	.get_strings = nes_netdev_get_strings,
 	.get_sset_count = nes_netdev_get_sset_count,
 	.get_ethtool_stats = nes_netdev_get_ethtool_stats,
@@ -1619,13 +1582,6 @@ static const struct ethtool_ops nes_ethtool_ops = {
 	.set_coalesce = nes_netdev_set_coalesce,
 	.get_pauseparam = nes_netdev_get_pauseparam,
 	.set_pauseparam = nes_netdev_set_pauseparam,
-	.set_tx_csum = ethtool_op_set_tx_csum,
-	.set_rx_csum = nes_netdev_set_rx_csum,
-	.set_sg = ethtool_op_set_sg,
-	.get_tso = ethtool_op_get_tso,
-	.set_tso = ethtool_op_set_tso,
-	.get_flags = ethtool_op_get_flags,
-	.set_flags = nes_netdev_set_flags,
 };
 
 
@@ -1727,12 +1683,11 @@ struct net_device *nes_netdev_init(struct nes_device *nesdev,
 	netdev->dev_addr[5] = (u8)u64temp;
 	memcpy(netdev->perm_addr, netdev->dev_addr, 6);
 
-	if ((nesvnic->logical_port < 2) || (nesdev->nesadapter->hw_rev != NE020_REV)) {
-		netdev->features |= NETIF_F_TSO | NETIF_F_SG | NETIF_F_IP_CSUM;
-		netdev->features |= NETIF_F_GSO | NETIF_F_TSO | NETIF_F_SG | NETIF_F_IP_CSUM;
-	} else {
-		netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
-	}
+	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_IP_CSUM;
+	if ((nesvnic->logical_port < 2) || (nesdev->nesadapter->hw_rev != NE020_REV))
+		netdev->hw_features |= NETIF_F_TSO;
+	netdev->features |= netdev->hw_features;
+	netdev->hw_features |= NETIF_F_LRO;
 
 	nes_debug(NES_DBG_INIT, "nesvnic = %p, reported features = 0x%lX, QPid = %d,"
 			" nic_index = %d, logical_port = %d, mac_index = %d.\n",
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 26d8018c0a7c..95ca93ceedac 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -1484,7 +1484,7 @@ static int nes_destroy_qp(struct ib_qp *ibqp)
 			(nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
 		cm_id = nesqp->cm_id;
 		cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
-		cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
+		cm_event.status = -ETIMEDOUT;
 		cm_event.local_addr = cm_id->local_addr;
 		cm_event.remote_addr = cm_id->remote_addr;
 		cm_event.private_data = NULL;
diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
index 7c03a70c55a2..8349f9c5064c 100644
--- a/drivers/infiniband/hw/qib/Kconfig
+++ b/drivers/infiniband/hw/qib/Kconfig
@@ -1,6 +1,6 @@
 config INFINIBAND_QIB
 	tristate "QLogic PCIe HCA support"
-	depends on 64BIT && NET
+	depends on 64BIT
 	---help---
 	This is a low-level driver for QLogic PCIe QLE InfiniBand host
 	channel adapters.  This driver does not support the QLogic
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 7de4b7ebffc5..d8ca0a0b970d 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -1799,7 +1799,7 @@ static int qib_6120_setup_reset(struct qib_devdata *dd)
 	/*
 	 * Keep chip from being accessed until we are ready.  Use
 	 * writeq() directly, to allow the write even though QIB_PRESENT
-	 * isn't' set.
+	 * isn't set.
 	 */
 	dd->flags &= ~(QIB_INITTED | QIB_PRESENT);
 	dd->int_counter = 0; /* so we check interrupts work again */
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 74fe0360bec7..c765a2eb04cf 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -2111,7 +2111,7 @@ static int qib_setup_7220_reset(struct qib_devdata *dd)
 	/*
 	 * Keep chip from being accessed until we are ready.  Use
 	 * writeq() directly, to allow the write even though QIB_PRESENT
-	 * isn't' set.
+	 * isn't set.
 	 */
 	dd->flags &= ~(QIB_INITTED | QIB_PRESENT);
 	dd->int_counter = 0; /* so we check interrupts work again */
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 55de3cf3441c..9f53e68a096a 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -3299,7 +3299,7 @@ static int qib_do_7322_reset(struct qib_devdata *dd)
 	/*
 	 * Keep chip from being accessed until we are ready.  Use
 	 * writeq() directly, to allow the write even though QIB_PRESENT
-	 * isn't' set.
+	 * isn't set.
 	 */
 	dd->flags &= ~(QIB_INITTED | QIB_PRESENT | QIB_BADINTR);
 	dd->flags |= QIB_DOING_RESET;
@@ -7534,7 +7534,8 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
 	ibsd_wr_allchans(ppd, 4, (1 << 10), BMASK(10, 10));
 	tstart = get_jiffies_64();
 	while (chan_done &&
-	       !time_after64(tstart, tstart + msecs_to_jiffies(500))) {
+	       !time_after64(get_jiffies_64(),
+			tstart + msecs_to_jiffies(500))) {
 		msleep(20);
 		for (chan = 0; chan < SERDES_CHANS; ++chan) {
 			rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index 48b6674cbc49..891cc2ff5f00 100644
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -526,11 +526,8 @@ static int qib_tune_pcie_coalesce(struct qib_devdata *dd)
 	 */
 	devid = parent->device;
 	if (devid >= 0x25e2 && devid <= 0x25fa) {
-		u8 rev;
-
 		/* 5000 P/V/X/Z */
-		pci_read_config_byte(parent, PCI_REVISION_ID, &rev);
-		if (rev <= 0xb2)
+		if (parent->revision <= 0xb2)
 			bits = 1U << 10;
 		else
 			bits = 7U << 10;