diff options
Diffstat (limited to 'drivers/infiniband/core/cma.c')
| -rw-r--r-- | drivers/infiniband/core/cma.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 088b5495e199..19f1730a4f24 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1486,6 +1486,7 @@ static struct net_device * roce_get_net_dev_by_cm_event(const struct ib_cm_event *ib_event) { const struct ib_gid_attr *sgid_attr = NULL; + struct net_device *ndev; if (ib_event->event == IB_CM_REQ_RECEIVED) sgid_attr = ib_event->param.req_rcvd.ppath_sgid_attr; @@ -1494,8 +1495,15 @@ roce_get_net_dev_by_cm_event(const struct ib_cm_event *ib_event) if (!sgid_attr) return NULL; - dev_hold(sgid_attr->ndev); - return sgid_attr->ndev; + + rcu_read_lock(); + ndev = rdma_read_gid_attr_ndev_rcu(sgid_attr); + if (IS_ERR(ndev)) + ndev = NULL; + else + dev_hold(ndev); + rcu_read_unlock(); + return ndev; } static struct net_device *cma_get_net_dev(const struct ib_cm_event *ib_event, |