From: oulijun <oulijun@huawei.com>
Date: Sat, 10 Jun 2017 18:49:24 +0800
Subject: IB/hns: Fix the bug with modifying the MAC address without removing
 the driver
Patch-mainline: v4.13-rc2
Git-commit: d322f004aaa647a5dc9dcddfe5ab1bff1e92f634
References: bsc#1104427 FATE#326416

When modified the MAC address used hns_roce_mac function, we release and create
reserved qp again, It is not necessary to use spin_lock_bh and spin_unlock_bh in
handle_en_event, Otherwise, it will occur a error. This patch mainly fixes it.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/hns/hns_roce_main.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -125,8 +125,6 @@ static int handle_en_event(struct hns_ro
 		return -ENODEV;
 	}
 
-	spin_lock_bh(&hr_dev->iboe.lock);
-
 	switch (event) {
 	case NETDEV_UP:
 	case NETDEV_CHANGE:
@@ -144,7 +142,6 @@ static int handle_en_event(struct hns_ro
 		break;
 	}
 
-	spin_unlock_bh(&hr_dev->iboe.lock);
 	return 0;
 }