[1/3] IB/core: use IB_CQ_REPORT_MISSED_EVENTS to avoid missed CQ callbacks

Commit Message

Ralph Campbell March 31, 2010, 5:57 p.m. UTC

None

Patch

diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index e351b15..54c413e 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -2226,10 +2226,11 @@  static void ib_mad_completion_handler(struct work_struct *work)
 {
 	struct ib_mad_port_private *port_priv;
 	struct ib_wc wc;
+	int ret;
 
 	port_priv = container_of(work, struct ib_mad_port_private, work);
-	ib_req_notify_cq(port_priv->cq, IB_CQ_NEXT_COMP);
 
+again:
 	while (ib_poll_cq(port_priv->cq, 1, &wc) == 1) {
 		if (wc.status == IB_WC_SUCCESS) {
 			switch (wc.opcode) {
@@ -2246,6 +2247,10 @@  static void ib_mad_completion_handler(struct work_struct *work)
 		} else
 			mad_error_handler(port_priv, &wc);
 	}
+	ret = ib_req_notify_cq(port_priv->cq, IB_CQ_NEXT_COMP |
+					      IB_CQ_REPORT_MISSED_EVENTS);
+	if (ret > 0)
+		goto again;
 }
 
 static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv)