From 69960a275efc9d82797bbbe2460a2d6c9cace314 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Wed, 3 Mar 2010 15:06:34 +0000 Subject: [PATCH] RDMA/cxgb3: Wait at least one schedule cycle during device removal During a hot-plug LLD removal event or an EEH error event, iw_cxgb3 must ensure that any/all threads that might be in a cxgb3 exported function must return from the function before iw_cxgb3 returns from its event processing. Do this by calling synchronize_net(). Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb3/iwch.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/cxgb3/iwch.c b/drivers/infiniband/hw/cxgb3/iwch.c index ee1d8b4d4541..63f975f3e30f 100644 --- a/drivers/infiniband/hw/cxgb3/iwch.c +++ b/drivers/infiniband/hw/cxgb3/iwch.c @@ -189,6 +189,7 @@ static void close_rnic_dev(struct t3cdev *tdev) list_for_each_entry_safe(dev, tmp, &dev_list, entry) { if (dev->rdev.t3cdev_p == tdev) { dev->rdev.flags = CXIO_ERROR_FATAL; + synchronize_net(); cancel_delayed_work_sync(&dev->db_drop_task); list_del(&dev->entry); iwch_unregister_device(dev); @@ -217,6 +218,7 @@ static void iwch_event_handler(struct t3cdev *tdev, u32 evt, u32 port_id) switch (evt) { case OFFLOAD_STATUS_DOWN: { rdev->flags = CXIO_ERROR_FATAL; + synchronize_net(); event.event = IB_EVENT_DEVICE_FATAL; dispatch = 1; break;