[PATCH] net: thunderx: correct bound check in nic_config_loopback

[Levin, Alexander]

Off by one in nic_config_loopback would access an invalid arrat variable when
vf id == MAX_LMAC.

Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
---
 drivers/net/ethernet/cavium/thunder/nic_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c 
b/drivers/net/ethernet/cavium/thunder/nic_main.c
index 16ed203..a70f50d 100644
--- a/drivers/net/ethernet/cavium/thunder/nic_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c
@@ -615,7 +615,7 @@ static int nic_config_loopback(struct nicpf *nic, struct 
set_loopback *lbk)
 {
        int bgx_idx, lmac_idx;
 
-       if (lbk->vf_id > MAX_LMAC)
+       if (lbk->vf_id >= MAX_LMAC)
                return -1;
 
        bgx_idx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lbk->vf_id]);
-- 
2.7.4