From: Steve Wise <swise@opengridcomputing.com>
Date: Fri, 21 Nov 2014 15:36:36 +0000 (-0600)
Subject: RDMA/cxgb4: Wake up waiters after flushing the qp
X-Git-Tag: v5.15~16633^2^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b341808835e29cff9e074712d39cee376f8d866;p=platform%2Fkernel%2Flinux-starfive.git

RDMA/cxgb4: Wake up waiters after flushing the qp

When transitioning into ERROR state, the QP was getting flushed after
waking up any waiters.  This can cause applications to miss flushed work
requests which can stall an NFS mount.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 2ed3ece..bb85d47 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1538,9 +1538,9 @@ err:
 	set_state(qhp, C4IW_QP_STATE_ERROR);
 	free = 1;
 	abort = 1;
-	wake_up(&qhp->wait);
 	BUG_ON(!ep);
 	flush_qp(qhp);
+	wake_up(&qhp->wait);
 out:
 	mutex_unlock(&qhp->mutex);