net: hns3: add waiting time before cmdq memory is released

[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / hisilicon / hns3 / hns3vf / hclgevf_cmd.c

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
index e04c0cfeb95c2bc307652a40856b439d0afab27f..fff0e536266e673973b6d5bbbd46616a3d2a19d6 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_cmd.c
@@ -476,12 +476,17 @@ static void hclgevf_cmd_uninit_regs(struct hclgevf_hw *hw)
 
 void hclgevf_cmd_uninit(struct hclgevf_dev *hdev)
 {
+       set_bit(HCLGEVF_STATE_CMD_DISABLE, &hdev->state);
+       /* wait to ensure that the firmware completes the possible left
+        * over commands.
+        */
+       msleep(HCLGEVF_CMDQ_CLEAR_WAIT_TIME);
        spin_lock_bh(&hdev->hw.cmq.csq.lock);
        spin_lock(&hdev->hw.cmq.crq.lock);
-       set_bit(HCLGEVF_STATE_CMD_DISABLE, &hdev->state);
        hclgevf_cmd_uninit_regs(&hdev->hw);
        spin_unlock(&hdev->hw.cmq.crq.lock);
        spin_unlock_bh(&hdev->hw.cmq.csq.lock);
+
        hclgevf_free_cmd_desc(&hdev->hw.cmq.csq);
        hclgevf_free_cmd_desc(&hdev->hw.cmq.crq);
 }