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Subject[PATCH 5.10 090/100] net: hns3: handle empty unknown interrupt for VF
Date
From: Yufeng Mo <moyufeng@huawei.com>

[ Upstream commit 2f61353cd2f789a4229b6f5c1c24a40a613357bb ]

Since some interrupt states may be cleared by hardware, the driver
may receive an empty interrupt. Currently, the VF driver directly
disables the vector0 interrupt in this case. As a result, the VF
is unavailable. Therefore, the vector0 interrupt should be enabled
in this case.

Fixes: b90fcc5bd904 ("net: hns3: add reset handling for VF when doing Core/Global/IMP reset")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
index 6e7da1dc2e8c3..d6580e942724d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c
@@ -2382,8 +2382,7 @@ static irqreturn_t hclgevf_misc_irq_handle(int irq, void *data)
break;
}

- if (event_cause != HCLGEVF_VECTOR0_EVENT_OTHER)
- hclgevf_enable_vector(&hdev->misc_vector, true);
+ hclgevf_enable_vector(&hdev->misc_vector, true);

return IRQ_HANDLED;
}
--
2.34.1


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