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| author |   Huazhong Tan <tanhuazhong@huawei.com> | 2019-06-28 19:50:14 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-28 09:39:49 -0700 |
| commit | 9bc6ac918c7176fcc306f3e57a34e7bc51ae470c (patch) | |
| tree | a1c59c509f5615aed3a59bc0c5735c053262ef04 /drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | |
| parent | net: hns3: re-schedule reset task while VF reset fail (diff) | |
| download | linux-dev-9bc6ac918c7176fcc306f3e57a34e7bc51ae470c.tar.xz linux-dev-9bc6ac918c7176fcc306f3e57a34e7bc51ae470c.zip | |
net: hns3: handle empty unknown interrupt
Since some MSI-X interrupt's status may be cleared by hardware,
so when the driver receives the interrupt, reading
HCLGE_VECTOR0_PF_OTHER_INT_STS_REG register will get an empty
unknown interrupt. For this case, the irq handler should enable
vector0 interrupt. This patch also use dev_info() instead of
dev_dbg() in the hclge_check_event_cause(), since this information
will be useful for normal usage.
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>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index 896605f705c1..62c6263fc12c 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -2783,8 +2783,9 @@ 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) { - dev_dbg(&hdev->pdev->dev, "received event 0x%x\n", - msix_src_reg); + dev_info(&hdev->pdev->dev, "received event 0x%x\n", + msix_src_reg); + *clearval = msix_src_reg; return HCLGE_VECTOR0_EVENT_ERR; } @@ -2796,8 +2797,11 @@ static u32 hclge_check_event_cause(struct hclge_dev *hdev, u32 *clearval) } /* 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); + dev_info(&hdev->pdev->dev, + "CMDQ INT status:0x%x, other INT status:0x%x\n", + cmdq_src_reg, msix_src_reg); + *clearval = msix_src_reg; + return HCLGE_VECTOR0_EVENT_OTHER; } @@ -2876,7 +2880,8 @@ static irqreturn_t hclge_misc_irq_handle(int irq, void *data) } /* clear the source of interrupt if it is not cause by reset */ - if (event_cause == HCLGE_VECTOR0_EVENT_MBX) { + if (!clearval || + event_cause == HCLGE_VECTOR0_EVENT_MBX) { hclge_clear_event_cause(hdev, event_cause, clearval); hclge_enable_vector(&hdev->misc_vector, true); } |