net: hns3: add some debug information for hclge_check_event_cause

When received vector0 msix and other event interrupt, it should
print the value of the register for debugging.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 2748c2f1fcc8d57606f74f0d1a7e34e6a2abf32d..9b7bc2268113dc2ffd2657f6b0eeaae1e37c8be1 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -2383,8 +2383,11 @@ static u32 hclge_check_event_cause(struct hclge_dev *hdev, u32 *clearval)
        }
 
        /* check for vector0 msix event source */
-       if (msix_src_reg & HCLGE_VECTOR0_REG_MSIX_MASK)
+       if (msix_src_reg & HCLGE_VECTOR0_REG_MSIX_MASK) {
+               dev_dbg(&hdev->pdev->dev, "received event 0x%x\n",
+                       msix_src_reg);
                return HCLGE_VECTOR0_EVENT_ERR;
+       }
 
        /* check for vector0 mailbox(=CMDQ RX) event source */
        if (BIT(HCLGE_VECTOR0_RX_CMDQ_INT_B) & cmdq_src_reg) {
@@ -2393,6 +2396,9 @@ static u32 hclge_check_event_cause(struct hclge_dev *hdev, u32 *clearval)
                return HCLGE_VECTOR0_EVENT_MBX;
        }
 
+       /* print other vector0 event source */
+       dev_dbg(&hdev->pdev->dev, "cmdq_src_reg:0x%x, msix_src_reg:0x%x\n",
+               cmdq_src_reg, msix_src_reg);
        return HCLGE_VECTOR0_EVENT_OTHER;
 }