linux-kernel - [PATCH 4.19 101/361] net: hns3: Set STATE_DOWN bit of hdev state when stopping net

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Date:   Sun, 11 Nov 2018 14:17:28 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Fuyun Liang <liangfuyun1@...wei.com>,
        Peng Li <lipeng321@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 101/361] net: hns3: Set STATE_DOWN bit of hdev state when stopping net

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

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

From: Fuyun Liang <liangfuyun1@...wei.com>

[ Upstream commit 2f7e489611bc685b8e00aba436032a8aac6cac57 ]

We clear STATE_DOWN bit of hdev state when starting net, but do not set
it again when stopping net. It causes that the net is down, but hdev state
is still up. STATE_DOWN bit of hdev state should be set when stopping net.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Fuyun Liang <liangfuyun1@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
Signed-off-by: Salil Mehta <salil.mehta@...wei.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c   |    2 ++
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c |    2 ++
 2 files changed, 4 insertions(+)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -3814,6 +3814,8 @@ static void hclge_ae_stop(struct hnae3_h
 	struct hclge_dev *hdev = vport->back;
 	int i;
 
+	set_bit(HCLGE_STATE_DOWN, &hdev->state);
+
 	del_timer_sync(&hdev->service_timer);
 	cancel_work_sync(&hdev->service_task);
 	clear_bit(HCLGE_STATE_SERVICE_SCHED, &hdev->state);
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1451,6 +1451,8 @@ static void hclgevf_ae_stop(struct hnae3
 	struct hclgevf_dev *hdev = hclgevf_ae_get_hdev(handle);
 	int i, queue_id;
 
+	set_bit(HCLGEVF_STATE_DOWN, &hdev->state);
+
 	for (i = 0; i < hdev->num_tqps; i++) {
 		/* Ring disable */
 		queue_id = hclgevf_get_queue_id(handle->kinfo.tqp[i]);