From: Yonglong Liu <liuyonglong@huawei.com>

Date: Thu, 14 Nov 2019 10:32:41 +0800

Subject: net: hns3: fix ETS bandwidth validation bug

Patch-mainline: v5.4-rc8

Git-commit: c2d56897819338eb0ba8b93184f7d10329b36653

References: bsc#1104353 FATE#326415

Some device only support 4 TCs, but the driver check the total

bandwidth of 8 TCs, so may cause wrong configurations write to

the hw.

This patch uses hdev->tc_max to instead HNAE3_MAX_TC to fix it.

Fixes: e432abfb99e5 ("net: hns3: add common validation in hclge_dcb")

Signed-off-by: Yonglong Liu <liuyonglong@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_dcb.c |    2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c

+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c

@@ -124,7 +124,7 @@ static int hclge_ets_validate(struct hcl

 	if (ret)

 		return ret;

-	for (i = 0; i < HNAE3_MAX_TC; i++) {

+	for (i = 0; i < hdev->tc_max; i++) {

 		switch (ets->tc_tsa[i]) {

 		case IEEE_8021QAZ_TSA_STRICT:

 			if (hdev->tm_info.tc_info[i].tc_sch_mode !=