[PATCH 5.3 040/105] net: hns3: fix ETS bandwidth validation bug

[Greg Kroah-Hartman]

From: Yonglong Liu <liuyonglong@xxxxxxxxxx>

[ Upstream commit c2d56897819338eb0ba8b93184f7d10329b36653 ]

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@xxxxxxxxxx>
Signed-off-by: Huazhong Tan <tanhuazhong@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index d9136a199d8db..f5c323e798343 100644
--- 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 hclge_dev *hdev, struct ieee_ets *ets,
 	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 !=
-- 
2.20.1