diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c
index 7e64033d7de3..0706623cfb96 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cq.c
@@ -226,7 +226,7 @@ void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn)
 
 static void mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index bb4d8d99f36d..995d4b6d5c1e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -565,34 +565,38 @@ static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 	struct mlx4_en_dev *mdev = priv->mdev;
 	struct mlx4_dev *dev = mdev->dev;
 	int qpn = priv->base_qpn;
-	u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
+	u64 mac;
 
-	en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
-	       priv->dev->dev_addr);
-	mlx4_unregister_mac(dev, priv->port, mac);
-
-	if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
+	if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
+		mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
+		en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
+		       priv->dev->dev_addr);
+		mlx4_unregister_mac(dev, priv->port, mac);
+	} else {
 		struct mlx4_mac_entry *entry;
 		struct hlist_node *tmp;
 		struct hlist_head *bucket;
-		unsigned int mac_hash;
+		unsigned int i;
 
-		mac_hash = priv->dev->dev_addr[MLX4_EN_MAC_HASH_IDX];
-		bucket = &priv->mac_hash[mac_hash];
-		hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
-			if (ether_addr_equal_64bits(entry->mac,
-						    priv->dev->dev_addr)) {
-				en_dbg(DRV, priv, "Releasing qp: port %d, MAC %pM, qpn %d\n",
-				       priv->port, priv->dev->dev_addr, qpn);
+		for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
+			bucket = &priv->mac_hash[i];
+			hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
+				mac = mlx4_en_mac_to_u64(entry->mac);
+				en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
+				       entry->mac);
 				mlx4_en_uc_steer_release(priv, entry->mac,
 							 qpn, entry->reg_id);
-				mlx4_qp_release_range(dev, qpn, 1);
 
+				mlx4_unregister_mac(dev, priv->port, mac);
 				hlist_del_rcu(&entry->hlist);
 				kfree_rcu(entry, rcu);
-				break;
 			}
 		}
+
+		en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
+		       priv->port, qpn);
+		mlx4_qp_release_range(dev, qpn, 1);
+		priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 	}
 }
 
@@ -650,28 +654,10 @@ u64 mlx4_en_mac_to_u64(u8 *addr)
 	return mac;
 }
 
-static int mlx4_en_set_mac(struct net_device *dev, void *addr)
+static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 {
-	struct mlx4_en_priv *priv = netdev_priv(dev);
-	struct mlx4_en_dev *mdev = priv->mdev;
-	struct sockaddr *saddr = addr;
-
-	if (!is_valid_ether_addr(saddr->sa_data))
-		return -EADDRNOTAVAIL;
-
-	memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
-	queue_work(mdev->workqueue, &priv->mac_task);
-	return 0;
-}
-
-static void mlx4_en_do_set_mac(struct work_struct *work)
-{
-	struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
-						 mac_task);
-	struct mlx4_en_dev *mdev = priv->mdev;
 	int err = 0;
 
-	mutex_lock(&mdev->state_lock);
 	if (priv->port_up) {
 		/* Remove old MAC and insert the new one */
 		err = mlx4_en_replace_mac(priv, priv->base_qpn,
@@ -683,7 +669,26 @@ static void mlx4_en_do_set_mac(struct work_struct *work)
 	} else
 		en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 
+	return err;
+}
+
+static int mlx4_en_set_mac(struct net_device *dev, void *addr)
+{
+	struct mlx4_en_priv *priv = netdev_priv(dev);
+	struct mlx4_en_dev *mdev = priv->mdev;
+	struct sockaddr *saddr = addr;
+	int err;
+
+	if (!is_valid_ether_addr(saddr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
+
+	mutex_lock(&mdev->state_lock);
+	err = mlx4_en_do_set_mac(priv);
 	mutex_unlock(&mdev->state_lock);
+
+	return err;
 }
 
 static void mlx4_en_clear_list(struct net_device *dev)
@@ -1348,7 +1353,7 @@ static void mlx4_en_do_get_stats(struct work_struct *work)
 		queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
 	}
 	if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
-		queue_work(mdev->workqueue, &priv->mac_task);
+		mlx4_en_do_set_mac(priv);
 		mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
 	}
 	mutex_unlock(&mdev->state_lock);
@@ -1828,9 +1833,11 @@ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
 	}
 
 #ifdef CONFIG_RFS_ACCEL
-	priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
-	if (!priv->dev->rx_cpu_rmap)
-		goto err;
+	if (priv->mdev->dev->caps.comp_pool) {
+		priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
+		if (!priv->dev->rx_cpu_rmap)
+			goto err;
+	}
 #endif
 
 	return 0;
@@ -2078,7 +2085,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	priv->msg_enable = MLX4_EN_MSG_LEVEL;
 	spin_lock_init(&priv->stats_lock);
 	INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
-	INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
 	INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
 	INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
 	INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 50917eb3013e..f6245579962d 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -787,6 +787,14 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	bmme_flags &= ~MLX4_BMME_FLAG_TYPE_2_WIN;
 	MLX4_PUT(outbox->buf, bmme_flags, QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
 
+	/* turn off device-managed steering capability if not enabled */
+	if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) {
+		MLX4_GET(field, outbox->buf,
+			 QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
+		field &= 0x7f;
+		MLX4_PUT(outbox->buf, field,
+			 QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
+	}
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index d180bc46826a..16abde20e1fc 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -1555,7 +1555,7 @@ void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
 
 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
 {
-	u64 in_param;
+	u64 in_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&in_param, idx);
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index cf883345af88..d738454116a0 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -1235,7 +1235,7 @@ int mlx4_get_qp_per_mgm(struct mlx4_dev *dev);
 
 static inline void set_param_l(u64 *arg, u32 val)
 {
-	*((u32 *)arg) = val;
+	*arg = (*arg & 0xffffffff00000000ULL) | (u64) val;
 }
 
 static inline void set_param_h(u64 *arg, u32 val)
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index c313d7e943a9..f710b7ce0dcb 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -509,7 +509,6 @@ struct mlx4_en_priv {
 	struct mlx4_en_cq rx_cq[MAX_RX_RINGS];
 	struct mlx4_qp drop_qp;
 	struct work_struct rx_mode_task;
-	struct work_struct mac_task;
 	struct work_struct watchdog_task;
 	struct work_struct linkstate_task;
 	struct delayed_work stats_task;
diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c
index 602ca9bf78e4..f91719a08cba 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mr.c
@@ -183,7 +183,7 @@ u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
 
 static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	u64 out_param;
 	int err;
 
@@ -240,7 +240,7 @@ void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order)
 
 static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
@@ -351,7 +351,7 @@ void __mlx4_mpt_release(struct mlx4_dev *dev, u32 index)
 
 static void mlx4_mpt_release(struct mlx4_dev *dev, u32 index)
 {
-	u64 in_param;
+	u64 in_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&in_param, index);
@@ -374,7 +374,7 @@ int __mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index)
 
 static int mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index)
 {
-	u64 param;
+	u64 param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&param, index);
@@ -395,7 +395,7 @@ void __mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index)
 
 static void mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index)
 {
-	u64 in_param;
+	u64 in_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&in_param, index);
diff --git a/drivers/net/ethernet/mellanox/mlx4/pd.c b/drivers/net/ethernet/mellanox/mlx4/pd.c
index 1ac88637ad9d..00f223acada7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/pd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/pd.c
@@ -101,7 +101,7 @@ void __mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn)
 
 void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index 719ead15e491..10c57c86388b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -175,7 +175,7 @@ EXPORT_SYMBOL_GPL(__mlx4_register_mac);
 
 int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 {
-	u64 out_param;
+	u64 out_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
@@ -222,7 +222,7 @@ EXPORT_SYMBOL_GPL(__mlx4_unregister_mac);
 
 void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac)
 {
-	u64 out_param;
+	u64 out_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&out_param, port);
@@ -361,7 +361,7 @@ out:
 
 int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
 {
-	u64 out_param;
+	u64 out_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
@@ -406,7 +406,7 @@ out:
 
 void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index 81e2abe07bbb..e891b058c1be 100644
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -222,7 +222,7 @@ int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align,
 
 int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	u64 out_param;
 	int err;
 
@@ -255,7 +255,7 @@ void __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
 
 void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
 {
-	u64 in_param;
+	u64 in_param = 0;
 	int err;
 
 	if (mlx4_is_mfunc(dev)) {
@@ -319,7 +319,7 @@ err_out:
 
 static int mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn)
 {
-	u64 param;
+	u64 param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&param, qpn);
@@ -344,7 +344,7 @@ void __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn)
 
 static void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn)
 {
-	u64 in_param;
+	u64 in_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&in_param, qpn);
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 083fb48dc3d7..2995687f1aee 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -2990,6 +2990,9 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 	u8 steer_type_mask = 2;
 	enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1;
 
+	if (dev->caps.steering_mode != MLX4_STEERING_MODE_B0)
+		return -EINVAL;
+
 	qpn = vhcr->in_modifier & 0xffffff;
 	err = get_res(dev, slave, qpn, RES_QP, &rqp);
 	if (err)
diff --git a/drivers/net/ethernet/mellanox/mlx4/srq.c b/drivers/net/ethernet/mellanox/mlx4/srq.c
index feda6c00829f..e329fe1f11b7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/srq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/srq.c
@@ -149,7 +149,7 @@ void __mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn)
 
 static void mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn)
 {
-	u64 in_param;
+	u64 in_param = 0;
 
 	if (mlx4_is_mfunc(dev)) {
 		set_param_l(&in_param, srqn);