From 1f19be651573539b0188a0fe5b125743d285b9f5 Mon Sep 17 00:00:00 2001
From: Daniel Verkamp <daniel.verkamp@intel.com>
Date: Fri, 8 Apr 2016 15:22:46 -0700
Subject: [PATCH] nvme: destroy I/O queues before shutdown

The NVMe specification recommends destroying all I/O submission and
completion queues before setting CC.SHN.

Change-Id: Iad71dd3fe03d897858034f3ca6ee02e0c55cc2b0
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
---
 lib/nvme/nvme_ctrlr.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/nvme/nvme_ctrlr.c b/lib/nvme/nvme_ctrlr.c
index 6dcf71543..9fcb9ec3e 100644
--- a/lib/nvme/nvme_ctrlr.c
+++ b/lib/nvme/nvme_ctrlr.c
@@ -993,6 +993,12 @@ nvme_ctrlr_destruct(struct spdk_nvme_ctrlr *ctrlr)
 {
 	uint32_t	i;
 
+	while (!TAILQ_EMPTY(&ctrlr->active_io_qpairs)) {
+		struct spdk_nvme_qpair *qpair = TAILQ_FIRST(&ctrlr->active_io_qpairs);
+
+		spdk_nvme_ctrlr_free_io_qpair(qpair);
+	}
+
 	nvme_ctrlr_shutdown(ctrlr);
 
 	nvme_ctrlr_destruct_namespaces(ctrlr);