Commit 950aff53 authored by Ralph Campbell's avatar Ralph Campbell Committed by Roland Dreier

IB/qib: Completion queue callback needs to be single threaded

Workqueues aren't exactly equivalent to tasklets since the callback
function may be called from multiple CPUs before the callback returns.
This causes completion notification callbacks to have MT bugs since
they weren't expecting this behavior. The fix is to use a single
threaded work queue.
Signed-off-by: default avatarRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 7c7a416e
...@@ -1059,7 +1059,7 @@ static int __init qlogic_ib_init(void) ...@@ -1059,7 +1059,7 @@ static int __init qlogic_ib_init(void)
goto bail_dev; goto bail_dev;
} }
qib_cq_wq = create_workqueue("qib_cq"); qib_cq_wq = create_singlethread_workqueue("qib_cq");
if (!qib_cq_wq) { if (!qib_cq_wq) {
ret = -ENOMEM; ret = -ENOMEM;
goto bail_wq; goto bail_wq;
......
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