diff options
| author | Xi Wang <wangxi11@huawei.com> | 2018-06-06 14:07:51 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-06 14:02:48 -0400 |
| commit | 1819e40908ee76c7219287224c22c772556c927e (patch) | |
| tree | 850abbfd0caeb92ecfb355d1d4ec28fda8f8e899 /drivers | |
| parent | dd612f18a49b63af8b3a5f572d999bdb197385bc (diff) | |
| download | linux-stable-1819e40908ee76c7219287224c22c772556c927e.tar.gz linux-stable-1819e40908ee76c7219287224c22c772556c927e.tar.bz2 linux-stable-1819e40908ee76c7219287224c22c772556c927e.zip | |
net: hns3: Fix for VF mailbox cannot receiving PF response
When the VF frequently switches the CMDQ interrupt, if the CMDQ_SRC is not
cleared, the VF will not receive the new PF response after the interrupt
is re-enabled, the corresponding log is as follows:
[ 317.482222] hns3 0000:00:03.0: VF could not get mbx resp(=0) from PF
in 500 tries
[ 317.483137] hns3 0000:00:03.0: VF request to get tqp info from PF
failed -5
This patch fixes this problem by clearing CMDQ_SRC before enabling
interrupt and syncing pending IRQ handlers after disabling interrupt.
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c index bc8a5760d959..a17872aab168 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c @@ -1565,6 +1565,8 @@ static int hclgevf_misc_irq_init(struct hclgevf_dev *hdev) return ret; } + hclgevf_clear_event_cause(hdev, 0); + /* enable misc. vector(vector 0) */ hclgevf_enable_vector(&hdev->misc_vector, true); @@ -1575,6 +1577,7 @@ static void hclgevf_misc_irq_uninit(struct hclgevf_dev *hdev) { /* disable misc vector(vector 0) */ hclgevf_enable_vector(&hdev->misc_vector, false); + synchronize_irq(hdev->misc_vector.vector_irq); free_irq(hdev->misc_vector.vector_irq, hdev); hclgevf_free_vector(hdev, 0); } |