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path: root/drivers/infiniband/hw/ipath/ipath_rc.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_rc.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_rc.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c
index 5c29b2bfea17..120a61b03bc4 100644
--- a/drivers/infiniband/hw/ipath/ipath_rc.c
+++ b/drivers/infiniband/hw/ipath/ipath_rc.c
@@ -959,8 +959,9 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode,
/* If this is a partial ACK, reset the retransmit timer. */
if (qp->s_last != qp->s_tail) {
spin_lock(&dev->pending_lock);
- list_add_tail(&qp->timerwait,
- &dev->pending[dev->pending_index]);
+ if (list_empty(&qp->timerwait))
+ list_add_tail(&qp->timerwait,
+ &dev->pending[dev->pending_index]);
spin_unlock(&dev->pending_lock);
/*
* If we get a partial ACK for a resent operation,