[PATCH net-next 03/11] net: hns3: add vector status check before free vector

[Peng Li]

If the hdev->vector_status[vector_id] is already HCLGE_INVALID_VPORT,
should log the error and return.

Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c   | 6 ++++++
 drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index d318d35..2b903f4 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2614,6 +2614,12 @@ static irqreturn_t hclge_misc_irq_handle(int irq, void *data)
 
 static void hclge_free_vector(struct hclge_dev *hdev, int vector_id)
 {
+	if (hdev->vector_status[vector_id] == HCLGE_INVALID_VPORT) {
+		dev_warn(&hdev->pdev->dev,
+			 "vector(vector_id %d) has been freed.\n", vector_id);
+		return;
+	}
+
 	hdev->vector_status[vector_id] = HCLGE_INVALID_VPORT;
 	hdev->num_msi_left += 1;
 	hdev->num_msi_used -= 1;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 3a8d7e0..1eb61c1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -330,6 +330,12 @@ static int hclgevf_set_handle_info(struct hclgevf_dev *hdev)
 
 static void hclgevf_free_vector(struct hclgevf_dev *hdev, int vector_id)
 {
+	if (hdev->vector_status[vector_id] == HCLGEVF_INVALID_VPORT) {
+		dev_warn(&hdev->pdev->dev,
+			 "vector(vector_id %d) has been freed.\n", vector_id);
+		return;
+	}
+
 	hdev->vector_status[vector_id] = HCLGEVF_INVALID_VPORT;
 	hdev->num_msi_left += 1;
 	hdev->num_msi_used -= 1;
-- 
2.9.3