net/mlx4: fix single port configuration

[dpdk.git] / drivers / net / mlx4 / mlx4.c

diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 2a721e7..952dae0 100644 (file)
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -337,7 +337,7 @@ mlx4_arg_parse(const char *key, const char *val, struct mlx4_conf *conf)
                return -rte_errno;
        }
        if (strcmp(MLX4_PMD_PORT_KVARG, key) == 0) {
-               uint32_t ports = rte_log2_u32(conf->ports.present);
+               uint32_t ports = rte_log2_u32(conf->ports.present + 1);
 
                if (tmp >= ports) {
                        ERROR("port index %lu outside range [0,%" PRIu32 ")",