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authorSteve Wise <swise@opengridcomputing.com>2010-03-03 10:06:34 -0500
committerRoland Dreier <rolandd@cisco.com>2010-03-11 17:00:35 -0500
commit69960a275efc9d82797bbbe2460a2d6c9cace314 (patch)
tree6cc110dfe51a5267563789655f141d99dcc6d8c0 /drivers/infiniband
parent25cf84cf377c0aae5dbcf937ea89bc7893db5176 (diff)
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch.c2
1 files changed, 2 insertions, 0 deletions
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)
189 list_for_each_entry_safe(dev, tmp, &dev_list, entry) { 189 list_for_each_entry_safe(dev, tmp, &dev_list, entry) {
190 if (dev->rdev.t3cdev_p == tdev) { 190 if (dev->rdev.t3cdev_p == tdev) {
191 dev->rdev.flags = CXIO_ERROR_FATAL; 191 dev->rdev.flags = CXIO_ERROR_FATAL;
192 synchronize_net();
192 cancel_delayed_work_sync(&dev->db_drop_task); 193 cancel_delayed_work_sync(&dev->db_drop_task);
193 list_del(&dev->entry); 194 list_del(&dev->entry);
194 iwch_unregister_device(dev); 195 iwch_unregister_device(dev);
@@ -217,6 +218,7 @@ static void iwch_event_handler(struct t3cdev *tdev, u32 evt, u32 port_id)
217 switch (evt) { 218 switch (evt) {
218 case OFFLOAD_STATUS_DOWN: { 219 case OFFLOAD_STATUS_DOWN: {
219 rdev->flags = CXIO_ERROR_FATAL; 220 rdev->flags = CXIO_ERROR_FATAL;
221 synchronize_net();
220 event.event = IB_EVENT_DEVICE_FATAL; 222 event.event = IB_EVENT_DEVICE_FATAL;
221 dispatch = 1; 223 dispatch = 1;
222 break; 224 break;