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authorRalph Campbell <ralph.campbell@qlogic.com>2010-06-17 23:14:15 +0000
committerRoland Dreier <rolandd@cisco.com>2010-07-06 14:13:58 -0700
commit950aff53949268eec4b0f2bd49f700f9585698f7 (patch)
tree6a03fa2f2f23f87db55e4ab0ec319a0511657ae8
parent7c7a416ef863a741c2031b5da1538773f9ab54f0 (diff)
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: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/qib/qib_init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 1d4db4b19d76..7831ff835d15 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -1059,7 +1059,7 @@ static int __init qlogic_ib_init(void)
goto bail_dev;
}
- qib_cq_wq = create_workqueue("qib_cq");
+ qib_cq_wq = create_singlethread_workqueue("qib_cq");
if (!qib_cq_wq) {
ret = -ENOMEM;
goto bail_wq;