[PATCH 4.16 123/272] net: hns3: fix for returning wrong value problem in hns3_get_rss_indir_size

[Greg Kroah-Hartman]

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Fuyun Liang <liangfuyun1@xxxxxxxxxx>

[ Upstream commit da44a00f06df1f823ea449065e79581ee624de4b ]

The return type of hns3_get_rss_indir_size is u32. But a negative value is
returned. This patch fixes it by replacing the negative value with zero.

Signed-off-by: Fuyun Liang <liangfuyun1@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -709,7 +709,7 @@ static u32 hns3_get_rss_indir_size(struc
 
 	if (!h->ae_algo || !h->ae_algo->ops ||
 	    !h->ae_algo->ops->get_rss_indir_size)
-		return -EOPNOTSUPP;
+		return 0;
 
 	return h->ae_algo->ops->get_rss_indir_size(h);
 }