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

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

From: Fuyun Liang <[email protected]>

[ Upstream commit 3bd6d258b1d5f76744567855d1376358a94f127d ]

The return type of hns3_get_rss_key_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 <[email protected]>
Signed-off-by: Peng Li <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
 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
@@ -698,7 +698,7 @@ static u32 hns3_get_rss_key_size(struct
 
        if (!h->ae_algo || !h->ae_algo->ops ||
            !h->ae_algo->ops->get_rss_key_size)
-               return -EOPNOTSUPP;
+               return 0;
 
        return h->ae_algo->ops->get_rss_key_size(h);
 }


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