net: hns3: modify the return code of hclge_get_ring_chain_from_mbx

[ Upstream commit 48009e9972974c52a5f649f761862dd67bce3d13 ]

Currently, function hclge_get_ring_chain_from_mbx will return -ENOMEM if
ring_num is bigger than HCLGE_MBX_MAX_RING_CHAIN_PARAM_NUM. It is better to
return -EINVAL for the invalid parameter case.

So this patch fixes it by return -EINVAL in this abnormal branch.

Fixes: 5d02a58dae60 ("net: hns3: fix for buffer overflow smatch warning")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index 65d78ee4d65a0d6b820e54e4a7912a1d5c899927..e30bf302737573f50d601c19c0a690e080ff3b9d 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -175,7 +175,7 @@ static int hclge_get_ring_chain_from_mbx(
        ring_num = req->msg.ring_num;
 
        if (ring_num > HCLGE_MBX_MAX_RING_CHAIN_PARAM_NUM)
-               return -ENOMEM;
+               return -EINVAL;
 
        for (i = 0; i < ring_num; i++) {
                if (req->msg.param[i].tqp_index >= vport->nic.kinfo.rss_size) {