From 12137c593d127c6c1a3eb050674da047682badaf Mon Sep 17 00:00:00 2001
From: Stefan Roscher <ossrosch@linux.vnet.ibm.com>
Date: Wed, 7 May 2008 11:35:06 -0700
Subject: IB/ehca: Wait for async events to finish before destroying QP

This is necessary because, in a multicore environment, a race between
uverbs async handler and destroy QP could occur.

Signed-off-by: Stefan Roscher <stefan.roscher at de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
 drivers/infiniband/hw/ehca/ehca_classes.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers/infiniband/hw/ehca/ehca_classes.h')

diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 00bab60f6de4..1e9e99a13933 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -192,6 +192,8 @@ struct ehca_qp {
 	int mtu_shift;
 	u32 message_count;
 	u32 packet_count;
+	atomic_t nr_events; /* events seen */
+	wait_queue_head_t wait_completion;
 };
 
 #define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
-- 
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