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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 /drivers/infiniband/hw
parent7c7a416ef863a741c2031b5da1538773f9ab54f0 (diff)
downloadlinux-linaro-950aff53949268eec4b0f2bd49f700f9585698f7.tar.gz
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>
Diffstat (limited to 'drivers/infiniband/hw')
-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 1d4db4b19d7..7831ff835d1 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;