[Patch net 11/11] net: hns3: bugfix for rtnl_lock's range in the hclgevf_reset()

[Huazhong Tan]

Since hclgevf_reset_wait() is used to wait for the hardware to complete
the reset, it is not necessary to hold the rtnl_lock during
hclgevf_reset_wait(). So this patch release the lock for the duration
of hclgevf_reset_wait().

Fixes: 6988eb2a9b77 ("net: hns3: Add support to reset the enet/ring mgmt layer")
Signed-off-by: Huazhong Tan <tanhuazh...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c 
b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 552b708..fa6251e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -1170,6 +1170,8 @@ static int hclgevf_reset(struct hclgevf_dev *hdev)
        /* bring down the nic to stop any ongoing TX/RX */
        hclgevf_notify_client(hdev, HNAE3_DOWN_CLIENT);
 
+       rtnl_unlock();
+
        /* check if VF could successfully fetch the hardware reset completion
         * status from the hardware
         */
@@ -1187,6 +1189,8 @@ static int hclgevf_reset(struct hclgevf_dev *hdev)
                return ret;
        }
 
+       rtnl_lock();
+
        /* now, re-initialize the nic client and ae device*/
        ret = hclgevf_reset_stack(hdev);
        if (ret)
-- 
2.7.4