diff --git a/[refs] b/[refs]
index 84a3378eb6e6..ab71026155f2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 35ff032e65ab5cc03bbba46cefece7376c7c562f
+refs/heads/master: c3af664adbe06803931dbc7a3c8588982d72fac1
diff --git a/trunk/drivers/infiniband/hw/ipath/ipath_rc.c b/trunk/drivers/infiniband/hw/ipath/ipath_rc.c
index e3e533276356..9e68c91130dd 100644
--- a/trunk/drivers/infiniband/hw/ipath/ipath_rc.c
+++ b/trunk/drivers/infiniband/hw/ipath/ipath_rc.c
@@ -228,18 +228,13 @@ int ipath_make_rc_req(struct ipath_qp *qp,
 		goto done;
 
 	if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) ||
-	    qp->s_rnr_timeout)
+	    qp->s_rnr_timeout || qp->s_wait_credit)
 		goto bail;
 
 	/* Limit the number of packets sent without an ACK. */
 	if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT) > 0) {
 		qp->s_wait_credit = 1;
 		dev->n_rc_stalls++;
-		spin_lock(&dev->pending_lock);
-		if (list_empty(&qp->timerwait))
-			list_add_tail(&qp->timerwait,
-				      &dev->pending[dev->pending_index]);
-		spin_unlock(&dev->pending_lock);
 		goto bail;
 	}
 
diff --git a/trunk/drivers/infiniband/hw/ipath/ipath_verbs.h b/trunk/drivers/infiniband/hw/ipath/ipath_verbs.h
index 7c4929f1cb5b..c62f9c5854f6 100644
--- a/trunk/drivers/infiniband/hw/ipath/ipath_verbs.h
+++ b/trunk/drivers/infiniband/hw/ipath/ipath_verbs.h
@@ -422,7 +422,7 @@ struct ipath_qp {
 #define IPATH_S_RDMAR_PENDING	0x04
 #define IPATH_S_ACK_PENDING	0x08
 
-#define IPATH_PSN_CREDIT	2048
+#define IPATH_PSN_CREDIT	512
 
 /*
  * Since struct ipath_swqe is not a fixed size, we can't simply index into