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RDMA/bnxt_re: Fix system crash during load/unload 

During driver unload, the driver proceeds with cleanup
without waiting for the scheduled events. So the device
pointers get freed up and driver crashes when the events
are scheduled later.

Flush the bnxt_re_task work queue before starting
device removal.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Selvin Xavier 2018-02-15 21:20:12 -08:00 committed by Doug Ledford
parent 3b921e3bc4
commit dcdaba0806
1 changed files with 5 additions and 0 deletions
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5
drivers/infiniband/hw/bnxt_re/main.c
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@ -1578,6 +1578,11 @@ static void __exit bnxt_re_mod_exit(void)
*/ */
list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) { list_for_each_entry_safe_reverse(rdev, next, &to_be_deleted, list) {
dev_info(rdev_to_dev(rdev), "Unregistering Device"); dev_info(rdev_to_dev(rdev), "Unregistering Device");
/*
* Flush out any scheduled tasks before destroying the
* resources
*/
flush_workqueue(bnxt_re_wq);
bnxt_re_dev_stop(rdev); bnxt_re_dev_stop(rdev);
bnxt_re_ib_unreg(rdev, true); bnxt_re_ib_unreg(rdev, true);
bnxt_re_remove_one(rdev); bnxt_re_remove_one(rdev);