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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