From: Huazhong Tan <tanhuazhong@huawei.com>
Date: Thu, 4 Apr 2019 16:17:57 +0800
Subject: net: hns3: prevent change MTU when resetting
Patch-mainline: v5.2-rc1
Git-commit: 6ff7ed8049ebf932643eee8680bb1d75691fa801
References: bsc#1104353 FATE#326415 bsc#1137201
When resetting, the changing of MTU is not allowed, so this patch
adds checking reset status in hns3_nic_change_mtu() to do that.
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>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1591,6 +1591,9 @@ static int hns3_nic_change_mtu(struct ne
struct hnae3_handle *h = hns3_get_handle(netdev);
int ret;
+ if (hns3_nic_resetting(netdev))
+ return -EBUSY;
+
if (!h->ae_algo->ops->set_mtu)
return -EOPNOTSUPP;