net/iavf: remove dead code in Rx function selection

Execution cannot reach the expression "use_avx2"
inside this statement: "if (!use_sse && !use_avx2 &..."."

The check is useless.

Coverity issue: 370606
Fixes: bb3ef9aaa478 ("net/iavf: fix Rx function selection")

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index 87f7eeb..74b5ab5 100644 (file)
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -2393,7 +2393,6 @@ iavf_set_rx_function(struct rte_eth_dev *dev)
        struct iavf_rx_queue *rxq;
        int i;
        int check_ret;
-       bool use_sse = false;
        bool use_avx2 = false;
        bool use_avx512 = false;
        bool use_flex = false;
@@ -2401,7 +2400,6 @@ iavf_set_rx_function(struct rte_eth_dev *dev)
        check_ret = iavf_rx_vec_dev_check(dev);
        if (check_ret >= 0 &&
            rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_128) {
-               use_sse = true;
                if ((rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX2) == 1 ||
                     rte_cpu_get_flag_enabled(RTE_CPUFLAG_AVX512F) == 1) &&
                    rte_vect_get_max_simd_bitwidth() >= RTE_VECT_SIMD_256)
@@ -2414,9 +2412,6 @@ iavf_set_rx_function(struct rte_eth_dev *dev)
                        use_avx512 = true;
 #endif
 
-               if (!use_sse && !use_avx2 && !use_avx512)
-                       goto normal;
-
                if (vf->vf_res->vf_cap_flags &
                        VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC)
                        use_flex = true;
@@ -2520,7 +2515,6 @@ iavf_set_rx_function(struct rte_eth_dev *dev)
                return;
        }
 
-normal:
 #endif
        if (dev->data->scattered_rx) {
                PMD_DRV_LOG(DEBUG, "Using a Scattered Rx callback (port=%d).",