From: Yufeng Mo <moyufeng@huawei.com>
Date: Mon, 29 Jul 2019 10:53:25 +0800
Subject: net: hns3: change GFP flag during lock period
Patch-mainline: v5.4-rc1
Git-commit: d659f9f60f6a119654c65bfa58aa6fa762c0824d
References: bsc#1104353 FATE#326415

When allocating memory, the GFP_KERNEL cannot be used during the
spin_lock period. This is because it may cause scheduling when holding
spin_lock. This patch changes GFP flag to GFP_ATOMIC in this case.

Fixes: dd74f815dd41 ("net: hns3: Add support for rule add/delete for flow director")
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: lipeng 00277521 <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -5471,7 +5471,7 @@ static int hclge_add_fd_entry_by_arfs(st
 			return -ENOSPC;
 		}
 
-		rule = kzalloc(sizeof(*rule), GFP_KERNEL);
+		rule = kzalloc(sizeof(*rule), GFP_ATOMIC);
 		if (!rule) {
 			spin_unlock_bh(&hdev->fd_rule_lock);