From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Sat, 6 Apr 2019 15:43:31 +0800
Subject: net: hns3: do not request reset when hardware resetting
Patch-mainline: v5.2-rc1
Git-commit: 4f765d3e5213da43a5f410ea62445f9591bfa4dc
References: bsc#1104353 FATE#326415 bsc#1137201
When hardware reset does not finish, the driver should not
request a new reset, otherwise the ongoing hardware reset
will get problem.
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -32,6 +32,7 @@
static int hclge_set_mac_mtu(struct hclge_dev *hdev, int new_mps);
static int hclge_init_vlan_config(struct hclge_dev *hdev);
static int hclge_reset_ae_dev(struct hnae3_ae_dev *ae_dev);
+static bool hclge_get_hw_reset_stat(struct hnae3_handle *handle);
static int hclge_set_umv_space(struct hclge_dev *hdev, u16 space_size,
u16 *allocated_size, bool is_alloc);
@@ -2714,9 +2715,18 @@ int hclge_func_reset_cmd(struct hclge_de
static void hclge_do_reset(struct hclge_dev *hdev)
{
+ struct hnae3_handle *handle = &hdev->vport[0].nic;
struct pci_dev *pdev = hdev->pdev;
u32 val;
+ if (hclge_get_hw_reset_stat(handle)) {
+ dev_info(&pdev->dev, "Hardware reset not finish\n");
+ dev_info(&pdev->dev, "func_rst_reg:0x%x, global_rst_reg:0x%x\n",
+ hclge_read_dev(&hdev->hw, HCLGE_FUN_RST_ING),
+ hclge_read_dev(&hdev->hw, HCLGE_GLOBAL_RESET_REG));
+ return;
+ }
+
switch (hdev->reset_type) {
case HNAE3_GLOBAL_RESET:
val = hclge_read_dev(&hdev->hw, HCLGE_GLOBAL_RESET_REG);