Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IPoIB: Fix crash in path_rec_completion()
  IPoIB: Fix hang in ipoib_flush_paths()
  IPoIB: Don't enable NAPI when it's already enabled
  RDMA/cxgb3: Fix deadlock in iw_cxgb3 (hang when configuring interface)
  IB/ehca: Remove reference to special QP in case of port activation failure
  IB/mlx4: Set umem field to NULL in mlx4_ib_alloc_fast_reg_mr()
  mlx4_core: Fix unused variable warning
  RDMA/nes: Mitigate compatibility issue regarding PCIe write credits
  RDMA/nes: Fix CQ allocation scheme for multicast receive queue apps
  RDMA/nes: Correct handling of PBL resources
  RDMA/nes: Reindent mis-indented spinlocks
  RDMA/cxgb3: Fix too-big reserved field zeroing in iwch_post_zb_read()
  IB/ipath: Fix RDMA write with immediate copy of last packet

10 files changed, 103 insertions, 51 deletions

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index ecff98043589..160ef482712d 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -1102,9 +1102,7 @@ static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
         char *cp, *next;
         unsigned fw_maj, fw_min, fw_mic;
 
-        rtnl_lock();
         lldev->ethtool_ops->get_drvinfo(lldev, &info);
-        rtnl_unlock();
 
         next = info.fw_version + 1;
         cp = strsep(&next, ".");
@@ -1192,9 +1190,7 @@ static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, ch
         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
 
         PDBG("%s dev 0x%p\n", __func__, dev);
-        rtnl_lock();
         lldev->ethtool_ops->get_drvinfo(lldev, &info);
-        rtnl_unlock();
         return sprintf(buf, "%s\n", info.fw_version);
 }
 
@@ -1207,9 +1203,7 @@ static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
         struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
 
         PDBG("%s dev 0x%p\n", __func__, dev);
-        rtnl_lock();
         lldev->ethtool_ops->get_drvinfo(lldev, &info);
-        rtnl_unlock();
         return sprintf(buf, "%s\n", info.driver);
 }
 
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index 3e4585c2318a..19661b2f0406 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -745,7 +745,6 @@ int iwch_post_zb_read(struct iwch_qp *qhp)
         wqe->read.rdmaop = T3_READ_REQ;
         wqe->read.reserved[0] = 0;
         wqe->read.reserved[1] = 0;
-        wqe->read.reserved[2] = 0;
         wqe->read.rem_stag = cpu_to_be32(1);
         wqe->read.rem_to = cpu_to_be64(1);
         wqe->read.local_stag = cpu_to_be32(1);
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c
index cb55be04442c..757035ea246f 100644
--- a/drivers/infiniband/hw/ehca/ehca_irq.c
+++ b/drivers/infiniband/hw/ehca/ehca_irq.c
@@ -359,36 +359,48 @@ static void notify_port_conf_change(struct ehca_shca *shca, int port_num)
         *old_attr = new_attr;
 }
 
+/* replay modify_qp for sqps -- return 0 if all is well, 1 if AQP1 destroyed */
+static int replay_modify_qp(struct ehca_sport *sport)
+{
+        int aqp1_destroyed;
+        unsigned long flags;
+
+        spin_lock_irqsave(&sport->mod_sqp_lock, flags);
+
+        aqp1_destroyed = !sport->ibqp_sqp[IB_QPT_GSI];
+
+        if (sport->ibqp_sqp[IB_QPT_SMI])
+                ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_SMI]);
+        if (!aqp1_destroyed)
+                ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_GSI]);
+
+        spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
+
+        return aqp1_destroyed;
+}
+
 static void parse_ec(struct ehca_shca *shca, u64 eqe)
 {
         u8 ec   = EHCA_BMASK_GET(NEQE_EVENT_CODE, eqe);
         u8 port = EHCA_BMASK_GET(NEQE_PORT_NUMBER, eqe);
         u8 spec_event;
         struct ehca_sport *sport = &shca->sport[port - 1];
-        unsigned long flags;
 
         switch (ec) {
         case 0x30: /* port availability change */
                 if (EHCA_BMASK_GET(NEQE_PORT_AVAILABILITY, eqe)) {
-                        int suppress_event;
-                        /* replay modify_qp for sqps */
-                        spin_lock_irqsave(&sport->mod_sqp_lock, flags);
-                        suppress_event = !sport->ibqp_sqp[IB_QPT_GSI];
-                        if (sport->ibqp_sqp[IB_QPT_SMI])
-                                ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_SMI]);
-                        if (!suppress_event)
-                                ehca_recover_sqp(sport->ibqp_sqp[IB_QPT_GSI]);
-                        spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
-
-                        /* AQP1 was destroyed, ignore this event */
-                        if (suppress_event)
-                                break;
+                        /* only replay modify_qp calls in autodetect mode;
+                         * if AQP1 was destroyed, the port is already down
+                         * again and we can drop the event.
+                         */
+                        if (ehca_nr_ports < 0)
+                                if (replay_modify_qp(sport))
+                                        break;
 
                         sport->port_state = IB_PORT_ACTIVE;
                         dispatch_port_event(shca, port, IB_EVENT_PORT_ACTIVE,
                                             "is active");
-                        ehca_query_sma_attr(shca, port,
-                                            &sport->saved_attr);
+                        ehca_query_sma_attr(shca, port, &sport->saved_attr);
                 } else {
                         sport->port_state = IB_PORT_DOWN;
                         dispatch_port_event(shca, port, IB_EVENT_PORT_ERR,
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 4d54b9f64567..9e05ee2db39b 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -860,6 +860,11 @@ static struct ehca_qp *internal_create_qp(
         if (qp_type == IB_QPT_GSI) {
                 h_ret = ehca_define_sqp(shca, my_qp, init_attr);
                 if (h_ret != H_SUCCESS) {
+                        kfree(my_qp->mod_qp_parm);
+                        my_qp->mod_qp_parm = NULL;
+                        /* the QP pointer is no longer valid */
+                        shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] =
+                                NULL;
                         ret = ehca2ib_return_code(h_ret);
                         goto create_qp_exit6;
                 }
diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c
index fc0f6d9e6030..2296832f94da 100644
--- a/drivers/infiniband/hw/ipath/ipath_ruc.c
+++ b/drivers/infiniband/hw/ipath/ipath_ruc.c
@@ -156,7 +156,7 @@ bail:
 /**
  * ipath_get_rwqe - copy the next RWQE into the QP's RWQE
  * @qp: the QP
- * @wr_id_only: update wr_id only, not SGEs
+ * @wr_id_only: update qp->r_wr_id only, not qp->r_sge
  *
  * Return 0 if no RWQE is available, otherwise return 1.
  *
@@ -173,8 +173,6 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only)
         u32 tail;
         int ret;
 
-        qp->r_sge.sg_list = qp->r_sg_list;
-
         if (qp->ibqp.srq) {
                 srq = to_isrq(qp->ibqp.srq);
                 handler = srq->ibsrq.event_handler;
@@ -206,8 +204,10 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only)
                 wqe = get_rwqe_ptr(rq, tail);
                 if (++tail >= rq->size)
                         tail = 0;
-        } while (!wr_id_only && !ipath_init_sge(qp, wqe, &qp->r_len,
-                                                &qp->r_sge));
+                if (wr_id_only)
+                        break;
+                qp->r_sge.sg_list = qp->r_sg_list;
+        } while (!ipath_init_sge(qp, wqe, &qp->r_len, &qp->r_sge));
         qp->r_wr_id = wqe->wr_id;
         wq->tail = tail;
 
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 87f5c5a87b98..8e4d26d56a95 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -205,6 +205,7 @@ struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
                 goto err_mr;
 
         mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
+        mr->umem = NULL;
 
         return &mr->ibmr;
 
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index a2b04d62b1a4..aa1dc41f04c8 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -95,6 +95,10 @@ unsigned int wqm_quanta = 0x10000;
 module_param(wqm_quanta, int, 0644);
 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
 
+static unsigned int limit_maxrdreqsz;
+module_param(limit_maxrdreqsz, bool, 0644);
+MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
+
 LIST_HEAD(nes_adapter_list);
 static LIST_HEAD(nes_dev_list);
 
@@ -588,6 +592,18 @@ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_i
                                                 nesdev->nesadapter->port_count;
         }
 
+        if ((limit_maxrdreqsz ||
+             ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
+              (hw_rev == NE020_REV1))) &&
+            (pcie_get_readrq(pcidev) > 256)) {
+                if (pcie_set_readrq(pcidev, 256))
+                        printk(KERN_ERR PFX "Unable to set max read request"
+                                " to 256 bytes\n");
+                else
+                        nes_debug(NES_DBG_INIT, "Max read request size set"
+                                " to 256 bytes\n");
+        }
+
         tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 
         /* bring up the Control QP */
diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index 610b9d859597..bc0b4de04450 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/drivers/infiniband/hw/nes/nes_hw.h
@@ -40,6 +40,7 @@
 #define NES_PHY_TYPE_ARGUS     4
 #define NES_PHY_TYPE_PUMA_1G   5
 #define NES_PHY_TYPE_PUMA_10G  6
+#define NES_PHY_TYPE_GLADIUS   7
 
 #define NES_MULTICAST_PF_MAX 8
 
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 932e56fcf774..d36c9a0bf1bb 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -220,14 +220,14 @@ static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
         if (nesqp->ibqp_state > IB_QPS_RTS)
                 return -EINVAL;
 
-                spin_lock_irqsave(&nesqp->lock, flags);
+        spin_lock_irqsave(&nesqp->lock, flags);
 
         head = nesqp->hwqp.sq_head;
         qsize = nesqp->hwqp.sq_tail;
 
         /* Check for SQ overflow */
         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
-                        spin_unlock_irqrestore(&nesqp->lock, flags);
+                spin_unlock_irqrestore(&nesqp->lock, flags);
                 return -EINVAL;
         }
 
@@ -269,7 +269,7 @@ static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
         nes_write32(nesdev->regs+NES_WQE_ALLOC,
                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
 
-                spin_unlock_irqrestore(&nesqp->lock, flags);
+        spin_unlock_irqrestore(&nesqp->lock, flags);
 
         return 0;
 }
@@ -349,7 +349,7 @@ static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
                         if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
                                 ret = -ENOMEM;
-                                goto failed_vpbl_alloc;
+                                goto failed_vpbl_avail;
                         } else {
                                 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
                         }
@@ -357,7 +357,7 @@ static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
                         if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
                                 ret = -ENOMEM;
-                                goto failed_vpbl_alloc;
+                                goto failed_vpbl_avail;
                         } else {
                                 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
                         }
@@ -391,14 +391,14 @@ static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
                         goto failed_vpbl_alloc;
                 }
 
-                nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
+                nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
+                nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
                 if (!nesfmr->root_vpbl.leaf_vpbl) {
                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
                         ret = -ENOMEM;
                         goto failed_leaf_vpbl_alloc;
                 }
 
-                nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
                 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
                                 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
                                 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
@@ -519,6 +519,16 @@ static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
                                 nesfmr->root_vpbl.pbl_pbase);
 
         failed_vpbl_alloc:
+        if (nesfmr->nesmr.pbls_used != 0) {
+                spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+                if (nesfmr->nesmr.pbl_4k)
+                        nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
+                else
+                        nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
+                spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+        }
+
+failed_vpbl_avail:
         kfree(nesfmr);
 
         failed_fmr_alloc:
@@ -534,18 +544,14 @@ static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
  */
 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
 {
+        unsigned long flags;
         struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
         struct nes_fmr *nesfmr = to_nesfmr(nesmr);
         struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
         struct nes_device *nesdev = nesvnic->nesdev;
-        struct nes_mr temp_nesmr = *nesmr;
+        struct nes_adapter *nesadapter = nesdev->nesadapter;
         int i = 0;
 
-        temp_nesmr.ibmw.device = ibfmr->device;
-        temp_nesmr.ibmw.pd = ibfmr->pd;
-        temp_nesmr.ibmw.rkey = ibfmr->rkey;
-        temp_nesmr.ibmw.uobject = NULL;
-
         /* free the resources */
         if (nesfmr->leaf_pbl_cnt == 0) {
                 /* single PBL case */
@@ -561,8 +567,24 @@ static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
                                 nesfmr->root_vpbl.pbl_pbase);
         }
+        nesmr->ibmw.device = ibfmr->device;
+        nesmr->ibmw.pd = ibfmr->pd;
+        nesmr->ibmw.rkey = ibfmr->rkey;
+        nesmr->ibmw.uobject = NULL;
 
-        return nes_dealloc_mw(&temp_nesmr.ibmw);
+        if (nesfmr->nesmr.pbls_used != 0) {
+                spin_lock_irqsave(&nesadapter->pbl_lock, flags);
+                if (nesfmr->nesmr.pbl_4k) {
+                        nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
+                        WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
+                } else {
+                        nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
+                        WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
+                }
+                spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
+        }
+
+        return nes_dealloc_mw(&nesmr->ibmw);
 }
 
 
@@ -1595,7 +1617,7 @@ static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
                 nes_ucontext->mcrqf = req.mcrqf;
                 if (nes_ucontext->mcrqf) {
                         if (nes_ucontext->mcrqf & 0x80000000)
-                                nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
+                                nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
                         else if (nes_ucontext->mcrqf & 0x40000000)
                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
                         else
@@ -3212,7 +3234,7 @@ static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
         if (nesqp->ibqp_state > IB_QPS_RTS)
                 return -EINVAL;
 
-                spin_lock_irqsave(&nesqp->lock, flags);
+        spin_lock_irqsave(&nesqp->lock, flags);
 
         head = nesqp->hwqp.sq_head;
 
@@ -3337,7 +3359,7 @@ static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
         }
 
-                spin_unlock_irqrestore(&nesqp->lock, flags);
+        spin_unlock_irqrestore(&nesqp->lock, flags);
 
         if (err)
                 *bad_wr = ib_wr;
@@ -3368,7 +3390,7 @@ static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
         if (nesqp->ibqp_state > IB_QPS_RTS)
                 return -EINVAL;
 
-                spin_lock_irqsave(&nesqp->lock, flags);
+        spin_lock_irqsave(&nesqp->lock, flags);
 
         head = nesqp->hwqp.rq_head;
 
@@ -3421,7 +3443,7 @@ static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
         }
 
-                spin_unlock_irqrestore(&nesqp->lock, flags);
+        spin_unlock_irqrestore(&nesqp->lock, flags);
 
         if (err)
                 *bad_wr = ib_wr;
@@ -3453,7 +3475,7 @@ static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
 
         nes_debug(NES_DBG_CQ, "\n");
 
-                spin_lock_irqsave(&nescq->lock, flags);
+        spin_lock_irqsave(&nescq->lock, flags);
 
         head = nescq->hw_cq.cq_head;
         cq_size = nescq->hw_cq.cq_size;
@@ -3562,7 +3584,7 @@ static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
                         cqe_count, nescq->hw_cq.cq_number);
 
-                spin_unlock_irqrestore(&nescq->lock, flags);
+        spin_unlock_irqrestore(&nescq->lock, flags);
 
         return cqe_count;
 }
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index fddded7900d1..85257f6b9576 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -106,12 +106,13 @@ int ipoib_open(struct net_device *dev)
 
         ipoib_dbg(priv, "bringing up interface\n");
 
-        napi_enable(&priv->napi);
         set_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
 
         if (ipoib_pkey_dev_delay_open(dev))
                 return 0;
 
+        napi_enable(&priv->napi);
+
         if (ipoib_ib_dev_open(dev)) {
                 napi_disable(&priv->napi);
                 return -EINVAL;
@@ -546,6 +547,7 @@ static int path_rec_start(struct net_device *dev,
         if (path->query_id < 0) {
                 ipoib_warn(priv, "ib_sa_path_rec_get failed: %d\n", path->query_id);
                 path->query = NULL;
+                complete(&path->done);
                 return path->query_id;
         }
 
@@ -662,7 +664,7 @@ static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
                         skb_push(skb, sizeof *phdr);
                         __skb_queue_tail(&path->queue, skb);
 
-                        if (path_rec_start(dev, path)) {
+                        if (!path->query && path_rec_start(dev, path)) {
                                 spin_unlock_irqrestore(&priv->lock, flags);
                                 path_free(dev, path);
                                 return;