diff options
| author | Huazhong Tan <tanhuazhong@huawei.com> | 2018-10-30 21:50:51 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-31 12:42:38 -0700 |
| commit | 3c88ed1d798da355859ca083d3884a16ce0841f2 (patch) | |
| tree | 7a04ba6057cae6fd891e987687b7dfceb80f7282 /drivers | |
| parent | 7fa6be4fd2f60399f3f3370a87629e102407a724 (diff) | |
| download | linux-3c88ed1d798da355859ca083d3884a16ce0841f2.tar.bz2 | |
net: hns3: bugfix for handling mailbox while the command queue reinitialized
In a multi-core machine, the mailbox service and reset service
will be executed at the same time. The reset service will re-initialize
the command queue, before that, the mailbox handler can only get some
invalid messages.
The HCLGE_STATE_CMD_DISABLE flag means that the command queue is not
available and needs to be reinitialized. Therefore, when the mailbox
handler recognizes this flag, it should not process the command.
Fixes: dde1a86e93ca ("net: hns3: Add mailbox support to PF driver")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index 04462a347a94..f890022938d9 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -400,6 +400,12 @@ void hclge_mbx_handler(struct hclge_dev *hdev) /* handle all the mailbox requests in the queue */ while (!hclge_cmd_crq_empty(&hdev->hw)) { + if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state)) { + dev_warn(&hdev->pdev->dev, + "command queue needs re-initializing\n"); + return; + } + desc = &crq->desc[crq->next_to_use]; req = (struct hclge_mbx_vf_to_pf_cmd *)desc->data; |