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
concurrently must return from the function before iw_cxgb3 returns from
its event processing. Do this by calling synchronize_net().
Signed-off-by: Steve Wise sw...@opengridcomputing.com
---
drivers/infiniband/hw/cxgb3/iwch.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb3/iwch.c
b/drivers/infiniband/hw/cxgb3/iwch.c
index ee1d8b4..63f975f 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;
--
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