net: hns3: print out status register when VF receives unknown source interrupt
authorHuazhong Tan <tanhuazhong@huawei.com>
Sat, 7 Mar 2020 03:42:47 +0000 (11:42 +0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 10 Mar 2020 02:36:13 +0000 (19:36 -0700)
When received an unknown vector 0 interrupt, there is not a
helpful information for user to realize that now. So this patch
prints out the value of the status register for this case, and
uses dev_info() instead of dev_dbg() in hclge_check_event_cause().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c

index d659720..f199a23 100644 (file)
@@ -2002,7 +2002,10 @@ static enum hclgevf_evt_cause hclgevf_check_evt_cause(struct hclgevf_dev *hdev,
                return HCLGEVF_VECTOR0_EVENT_MBX;
        }
 
-       dev_dbg(&hdev->pdev->dev, "vector 0 interrupt from unknown source\n");
+       /* print other vector0 event source */
+       dev_info(&hdev->pdev->dev,
+                "vector 0 interrupt from unknown source, cmdq_src = %#x\n",
+                cmdq_stat_reg);
 
        return HCLGEVF_VECTOR0_EVENT_OTHER;
 }