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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 <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise 2010-03-03 15:06:34 +00:00 committed by Roland Dreier
parent 25cf84cf37
commit 69960a275e
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/hw/cxgb3/iwch.c
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@ -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;