diff --git a/drivers/net/ethernet/mucse/rnp/rnp_main.c b/drivers/net/ethernet/mucse/rnp/rnp_main.c
index 59d7873bf0176..db7927f70ceac 100644
--- a/drivers/net/ethernet/mucse/rnp/rnp_main.c
+++ b/drivers/net/ethernet/mucse/rnp/rnp_main.c
@@ -6162,7 +6162,7 @@ netdev_tx_t rnp_xmit_frame_ring(struct sk_buff *skb,
 			 * protocol and store the tag
 			 */
 			/* veb only use ctags */
-		} else if ((protocol == htons(ETH_P_8021Q))) {
+		} else if (protocol == htons(ETH_P_8021Q)) {
 			struct vlan_hdr *vhdr, _vhdr;
 
 			vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr),
diff --git a/drivers/net/ethernet/mucse/rnp/rnp_n10.c b/drivers/net/ethernet/mucse/rnp/rnp_n10.c
index 1cc0ba9836f1e..3d626bc0f6553 100644
--- a/drivers/net/ethernet/mucse/rnp/rnp_n10.c
+++ b/drivers/net/ethernet/mucse/rnp/rnp_n10.c
@@ -3326,8 +3326,8 @@ static int rnp10_set_link_ksettings(struct net_device *netdev,
 		if (advertising_link_speed) {
 			hw->phy.autoneg_advertised = advertising_link_speed;
 		} else {
-			if ((hw->force_speed_stat ==
-			     FORCE_SPEED_STAT_DISABLED)) {
+			if (hw->force_speed_stat ==
+			     FORCE_SPEED_STAT_DISABLED) {
 				netdev_info(netdev,
 					    "advertising_link_speed is 0\n");
 				err = -EINVAL;
@@ -4205,7 +4205,6 @@ static s32 rnp_get_thermal_sensor_data_hw_ops_n10(struct rnp_hw *hw)
 	int voltage = 0;
 	struct rnp_thermal_sensor_data *data = &hw->thermal_sensor_data;
 
-	voltage = voltage;
 	data->sensor[0].temp = rnp_mbx_get_temp(hw, &voltage);
 
 	return 0;
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
index eb87d01f05796..e0795ba6166b6 100644
--- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_chip.c
@@ -3391,7 +3391,6 @@ static s32 rnpgbe_get_thermal_sensor_data_hw_ops_n500(struct rnpgbe_hw *hw)
 	int voltage = 0;
 	struct rnpgbe_thermal_sensor_data *data = &hw->thermal_sensor_data;
 
-	voltage = voltage;
 	data->sensor[0].temp = rnpgbe_mbx_get_temp(hw, &voltage);
 
 	return 0;
diff --git a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.h b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.h
index 7d115fe2aeaa2..1059d0c11954e 100644
--- a/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.h
+++ b/drivers/net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.h
@@ -26,7 +26,8 @@ struct mbx_req_cookie {
 
 	int done;
 	int priv_len;
-	char priv[0];
+#define MAX_PRIV_LEN 64
+	char priv[MAX_PRIV_LEN];
 };
 
 enum GENERIC_CMD {
diff --git a/drivers/net/ethernet/mucse/rnpgbevf/rnpgbevf_ethtool.c b/drivers/net/ethernet/mucse/rnpgbevf/rnpgbevf_ethtool.c
index 4e32d557a33fa..4848bbbb77359 100644
--- a/drivers/net/ethernet/mucse/rnpgbevf/rnpgbevf_ethtool.c
+++ b/drivers/net/ethernet/mucse/rnpgbevf/rnpgbevf_ethtool.c
@@ -128,7 +128,8 @@ static int rnpgbevf_get_link_ksettings(struct net_device *netdev,
 	struct rnpgbevf_hw *hw = &adapter->hw;
 	bool autoneg = false;
 	bool link_up;
-	u32 supported, advertising;
+	u32 supported;
+	u32 advertising = 0;
 	u32 link_speed = 0;
 
 	ethtool_convert_link_mode_to_legacy_u32(&supported,