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Subject[PATCH V2 net-next 10/12] net: hns3: prevent change MTU when resetting
Date
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>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 476c23d..0e31f74 100644
--- 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 net_device *netdev, int new_mtu)
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;

--
2.7.4
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