netdev - [PATCH net 4/4] net: hns3: fix set and get link ksettings issue

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Date:   Sat, 28 Mar 2020 15:09:58 +0800
From:   Huazhong Tan <tanhuazhong@...wei.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
        <linuxarm@...wei.com>, <kuba@...nel.org>,
        Guangbin Huang <huangguangbin2@...wei.com>,
        Huazhong Tan <tanhuazhong@...wei.com>
Subject: [PATCH net 4/4] net: hns3: fix set and get link ksettings issue

From: Guangbin Huang <huangguangbin2@...wei.com>

When device is not open, the service task which update the port
information per second is not running. In this case, the port
capabilities, including speed ability, autoneg ability, media type,
may be incorrect. Then get/set link ksetting may fail.

This patch fixes it by updating the port information before getting/
setting link ksettings when device is not open, and start timer
task immediately by setting delay time to 0 when device opens.

Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index b351807..0e03c3a 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -6765,7 +6765,7 @@ static void hclge_set_timer_task(struct hnae3_handle *handle, bool enable)
 	struct hclge_dev *hdev = vport->back;
 
 	if (enable) {
-		hclge_task_schedule(hdev, round_jiffies_relative(HZ));
+		hclge_task_schedule(hdev, 0);
 	} else {
 		/* Set the DOWN flag here to disable link updating */
 		set_bit(HCLGE_STATE_DOWN, &hdev->state);
@@ -8979,6 +8979,12 @@ static void hclge_get_media_type(struct hnae3_handle *handle, u8 *media_type,
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
 
+	/* When nic is down, the service task is not running, doesn't update
+	 * the port information per second. Query the port information before
+	 * return the media type, ensure getting the correct media information.
+	 */
+	hclge_update_port_info(hdev);
+
 	if (media_type)
 		*media_type = hdev->hw.mac.media_type;
 
-- 
2.7.4