linux-kernel - [PATCH 4.16 62/72] nvme: Fix sync controller reset return

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Message-Id: <20180514064827.351002320@linuxfoundation.org>
Date:   Mon, 14 May 2018 08:49:19 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Charles Machalow <charles.machalow@...el.com>,
        Keith Busch <keith.busch@...el.com>
Subject: [PATCH 4.16 62/72] nvme: Fix sync controller reset return

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Charles Machalow <charles.machalow@...el.com>

commit 4e50d9ebaeaa3c6761d2b513ef7039510c8cf213 upstream.

If a controller reset is requested while the device has no namespaces,
we were incorrectly returning ENETRESET. This patch adds the check for
ADMIN_ONLY controller state to indicate a successful reset.

Fixes: 8000d1fdb0  ("nvme-rdma: fix sysfs invoked reset_ctrl error flow ")
Cc: <stable@...r.kernel.org>
Signed-off-by: Charles Machalow <charles.machalow@...el.com>
[changelog]
Signed-off-by: Keith Busch <keith.busch@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/nvme/host/core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -122,7 +122,8 @@ int nvme_reset_ctrl_sync(struct nvme_ctr
 	ret = nvme_reset_ctrl(ctrl);
 	if (!ret) {
 		flush_work(&ctrl->reset_work);
-		if (ctrl->state != NVME_CTRL_LIVE)
+		if (ctrl->state != NVME_CTRL_LIVE &&
+		    ctrl->state != NVME_CTRL_ADMIN_ONLY)
 			ret = -ENETRESET;
 	}