net: hns3: bugfix for handling mailbox while the command queue reinitialized
authorHuazhong Tan <tanhuazhong@huawei.com>
Tue, 30 Oct 2018 13:50:51 +0000 (21:50 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 31 Oct 2018 19:42:38 +0000 (12:42 -0700)
commit3c88ed1d798da355859ca083d3884a16ce0841f2
tree7a04ba6057cae6fd891e987687b7dfceb80f7282
parent7fa6be4fd2f60399f3f3370a87629e102407a724
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>
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c