From: Leon Romanovsky Date: Thu, 17 Aug 2017 12:50:36 +0000 (+0300) Subject: RDMA/(core, ulp): Convert register/unregister event handler to be void X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=dcc9881e6767559c04faf15804ac145a2ea026cb;p=openwrt%2Fstaging%2Fblogic.git RDMA/(core, ulp): Convert register/unregister event handler to be void The functions ib_register_event_handler() and ib_unregister_event_handler() always returned success and they can't fail. Let's convert those functions to be void, remove redundant checks and cleanup tons of goto statements. Signed-off-by: Leon Romanovsky Reviewed-by: Dennis Dalessandro Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index efc94304dee3..77515638c55c 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1199,30 +1199,23 @@ int ib_cache_setup_one(struct ib_device *device) device->cache.ports = kzalloc(sizeof(*device->cache.ports) * (rdma_end_port(device) - rdma_start_port(device) + 1), GFP_KERNEL); - if (!device->cache.ports) { - err = -ENOMEM; - goto out; - } + if (!device->cache.ports) + return -ENOMEM; err = gid_table_setup_one(device); - if (err) - goto out; + if (err) { + kfree(device->cache.ports); + device->cache.ports = NULL; + return err; + } for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p) ib_cache_update(device, p + rdma_start_port(device), true); INIT_IB_EVENT_HANDLER(&device->cache.event_handler, device, ib_cache_event); - err = ib_register_event_handler(&device->cache.event_handler); - if (err) - goto err; - + ib_register_event_handler(&device->cache.event_handler); return 0; - -err: - gid_table_cleanup_one(device); -out: - return err; } void ib_cache_release_one(struct ib_device *device) diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index fc6be1175183..ec4786777447 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -747,7 +747,7 @@ EXPORT_SYMBOL(ib_set_client_data); * chapter 11 of the InfiniBand Architecture Specification). This * callback may occur in interrupt context. */ -int ib_register_event_handler (struct ib_event_handler *event_handler) +void ib_register_event_handler(struct ib_event_handler *event_handler) { unsigned long flags; @@ -755,8 +755,6 @@ int ib_register_event_handler (struct ib_event_handler *event_handler) list_add_tail(&event_handler->list, &event_handler->device->event_handler_list); spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); - - return 0; } EXPORT_SYMBOL(ib_register_event_handler); @@ -767,15 +765,13 @@ EXPORT_SYMBOL(ib_register_event_handler); * Unregister an event handler registered with * ib_register_event_handler(). */ -int ib_unregister_event_handler(struct ib_event_handler *event_handler) +void ib_unregister_event_handler(struct ib_event_handler *event_handler) { unsigned long flags; spin_lock_irqsave(&event_handler->device->event_handler_lock, flags); list_del(&event_handler->list); spin_unlock_irqrestore(&event_handler->device->event_handler_lock, flags); - - return 0; } EXPORT_SYMBOL(ib_unregister_event_handler); diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 0179b21bad34..ab5e1024fea9 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -2417,8 +2417,7 @@ static void ib_sa_add_one(struct ib_device *device) */ INIT_IB_EVENT_HANDLER(&sa_dev->event_handler, device, ib_sa_event); - if (ib_register_event_handler(&sa_dev->event_handler)) - goto err; + ib_register_event_handler(&sa_dev->event_handler); for (i = 0; i <= e - s; ++i) { if (rdma_cap_ib_sa(device, i + 1)) diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index 5e530d2bee44..defeda33e27f 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -595,7 +595,6 @@ struct file *ib_uverbs_alloc_async_event_file(struct ib_uverbs_file *uverbs_file { struct ib_uverbs_async_event_file *ev_file; struct file *filp; - int ret; ev_file = kzalloc(sizeof(*ev_file), GFP_KERNEL); if (!ev_file) @@ -621,21 +620,11 @@ struct file *ib_uverbs_alloc_async_event_file(struct ib_uverbs_file *uverbs_file INIT_IB_EVENT_HANDLER(&uverbs_file->event_handler, ib_dev, ib_uverbs_event_handler); - ret = ib_register_event_handler(&uverbs_file->event_handler); - if (ret) - goto err_put_file; - + ib_register_event_handler(&uverbs_file->event_handler); /* At that point async file stuff was fully set */ return filp; -err_put_file: - fput(filp); - kref_put(&uverbs_file->async_file->ref, - ib_uverbs_release_async_event_file); - uverbs_file->async_file = NULL; - return ERR_PTR(ret); - err_put_refs: kref_put(&ev_file->uverbs_file->ref, ib_uverbs_release_file); kref_put(&ev_file->ref, ib_uverbs_release_async_event_file); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index ee9f5d281b37..344e8d3d47bd 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -2227,13 +2227,7 @@ static struct net_device *ipoib_add_port(const char *format, INIT_IB_EVENT_HANDLER(&priv->event_handler, priv->ca, ipoib_event); - result = ib_register_event_handler(&priv->event_handler); - if (result < 0) { - printk(KERN_WARNING "%s: ib_register_event_handler failed for " - "port %d (ret = %d)\n", - hca->name, port, result); - goto event_failed; - } + ib_register_event_handler(&priv->event_handler); result = register_netdev(priv->dev); if (result) { @@ -2266,8 +2260,6 @@ register_failed: set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); cancel_delayed_work(&priv->neigh_reap_task); flush_workqueue(priv->wq); - -event_failed: ipoib_dev_cleanup(priv->dev); device_init_failed: diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index 26a004e97ae0..55a73b0ed4c6 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -106,9 +106,7 @@ static int iser_create_device_ib_res(struct iser_device *device) INIT_IB_EVENT_HANDLER(&device->event_handler, ib_dev, iser_event_handler); - if (ib_register_event_handler(&device->event_handler)) - goto cq_err; - + ib_register_event_handler(&device->event_handler); return 0; cq_err: @@ -141,7 +139,7 @@ static void iser_free_device_ib_res(struct iser_device *device) comp->cq = NULL; } - (void)ib_unregister_event_handler(&device->event_handler); + ib_unregister_event_handler(&device->event_handler); ib_dealloc_pd(device->pd); kfree(device->comps); diff --git a/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c b/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c index 57b862b94dca..21f0b481edcc 100644 --- a/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c +++ b/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c @@ -954,12 +954,7 @@ static int vema_register(struct opa_vnic_ctrl_port *cport) INIT_IB_EVENT_HANDLER(&port->event_handler, cport->ibdev, opa_vnic_event); - ret = ib_register_event_handler(&port->event_handler); - if (ret) { - c_err("port %d: event handler register failed\n", i); - vema_unregister(cport); - return ret; - } + ib_register_event_handler(&port->event_handler); idr_init(&port->vport_idr); mutex_init(&port->lock); diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index 402275be0931..9e8e9220f816 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -2238,7 +2238,7 @@ static int srpt_write_pending(struct se_cmd *se_cmd) cqe, first_wr); cqe = NULL; } - + ret = ib_post_send(ch->qp, first_wr, &bad_wr); if (ret) { pr_err("%s: ib_post_send() returned %d for %d (avail: %d)\n", @@ -2530,8 +2530,7 @@ static void srpt_add_one(struct ib_device *device) INIT_IB_EVENT_HANDLER(&sdev->event_handler, sdev->device, srpt_event_handler); - if (ib_register_event_handler(&sdev->event_handler)) - goto err_cm; + ib_register_event_handler(&sdev->event_handler); sdev->ioctx_ring = (struct srpt_recv_ioctx **) srpt_alloc_ioctx_ring(sdev, sdev->srq_size, diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index c155c105589d..e536a052e5dd 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -2413,8 +2413,8 @@ int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, enum ib_qp_type type, enum ib_qp_attr_mask mask, enum rdma_link_layer ll); -int ib_register_event_handler (struct ib_event_handler *event_handler); -int ib_unregister_event_handler(struct ib_event_handler *event_handler); +void ib_register_event_handler(struct ib_event_handler *event_handler); +void ib_unregister_event_handler(struct ib_event_handler *event_handler); void ib_dispatch_event(struct ib_event *event); int ib_query_port(struct ib_device *device,