Merge branch 'hns3-fixes'

Huazhong Tan says:

====================
Bugfix for the HNS3 driver

This patch series include bugfix for the HNS3 ethernet
controller driver.

Change log:
V4->V5:
	Fixes comments from Joe Perches & Sergei Shtylyov
V3->V4:
	Fixes comments from Sergei Shtylyov
V2->V3:
	Fixes comments from Sergei Shtylyov
V1->V2:
	Fixes the compilation break reported by kbuild test robot
	http://patchwork.ozlabs.org/patch/989818/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -316,8 +316,8 @@ struct hnae3_ae_ops {
 	int (*set_loopback)(struct hnae3_handle *handle,
 			    enum hnae3_loop loop_mode, bool en);
 
-	void (*set_promisc_mode)(struct hnae3_handle *handle, bool en_uc_pmc,
-				 bool en_mc_pmc);
+	int (*set_promisc_mode)(struct hnae3_handle *handle, bool en_uc_pmc,
+				bool en_mc_pmc);
 	int (*set_mtu)(struct hnae3_handle *handle, int new_mtu);
 
 	void (*get_pauseparam)(struct hnae3_handle *handle,
@@ -391,7 +391,7 @@ struct hnae3_ae_ops {
 				      int vector_num,
 				      struct hnae3_ring_chain_node *vr_chain);
 
-	void (*reset_queue)(struct hnae3_handle *handle, u16 queue_id);
+	int (*reset_queue)(struct hnae3_handle *handle, u16 queue_id);
 	u32 (*get_fw_version)(struct hnae3_handle *handle);
 	void (*get_mdix_mode)(struct hnae3_handle *handle,
 			      u8 *tp_mdix_ctrl, u8 *tp_mdix);

drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

@@ -509,16 +509,18 @@ static void hns3_nic_set_rx_mode(struct net_device *netdev)
 	h->netdev_flags = new_flags;
 }
 
-void hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags)
+int hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags)
 {
 	struct hns3_nic_priv *priv = netdev_priv(netdev);
 	struct hnae3_handle *h = priv->ae_handle;
 
 	if (h->ae_algo->ops->set_promisc_mode) {
-		h->ae_algo->ops->set_promisc_mode(h,
-						  promisc_flags & HNAE3_UPE,
-						  promisc_flags & HNAE3_MPE);
+		return h->ae_algo->ops->set_promisc_mode(h,
+						promisc_flags & HNAE3_UPE,
+						promisc_flags & HNAE3_MPE);
 	}
+
+	return 0;
 }
 
 void hns3_enable_vlan_filter(struct net_device *netdev, bool enable)
@@ -1494,18 +1496,22 @@ static int hns3_vlan_rx_kill_vid(struct net_device *netdev,
 	return ret;
 }
 
-static void hns3_restore_vlan(struct net_device *netdev)
+static int hns3_restore_vlan(struct net_device *netdev)
 {
 	struct hns3_nic_priv *priv = netdev_priv(netdev);
+	int ret = 0;
 	u16 vid;
-	int ret;
 
 	for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) {
 		ret = hns3_vlan_rx_add_vid(netdev, htons(ETH_P_8021Q), vid);
-		if (ret)
-			netdev_warn(netdev, "Restore vlan: %d filter, ret:%d\n",
-				    vid, ret);
+		if (ret) {
+			netdev_err(netdev, "Restore vlan: %d filter, ret:%d\n",
+				   vid, ret);
+			return ret;
+		}
 	}
+
+	return ret;
 }
 
 static int hns3_ndo_set_vf_vlan(struct net_device *netdev, int vf, u16 vlan,
@@ -2727,7 +2733,7 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
 			chain = devm_kzalloc(&pdev->dev, sizeof(*chain),
 					     GFP_KERNEL);
 			if (!chain)
-				return -ENOMEM;
+				goto err_free_chain;
 
 			cur_chain->next = chain;
 			chain->tqp_index = tx_ring->tqp->tqp_index;
@@ -2757,7 +2763,7 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
 	while (rx_ring) {
 		chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL);
 		if (!chain)
-			return -ENOMEM;
+			goto err_free_chain;
 
 		cur_chain->next = chain;
 		chain->tqp_index = rx_ring->tqp->tqp_index;
@@ -2772,6 +2778,16 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
 	}
 
 	return 0;
+
+err_free_chain:
+	cur_chain = head->next;
+	while (cur_chain) {
+		chain = cur_chain->next;
+		devm_kfree(&pdev->dev, chain);
+		cur_chain = chain;
+	}
+
+	return -ENOMEM;
 }
 
 static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector,
@@ -2821,7 +2837,7 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
 	struct hnae3_handle *h = priv->ae_handle;
 	struct hns3_enet_tqp_vector *tqp_vector;
 	int ret = 0;
-	u16 i;
+	int i;
 
 	hns3_nic_set_cpumask(priv);
 
@@ -2868,13 +2884,19 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
 		hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
 
 		if (ret)
-			return ret;
+			goto map_ring_fail;
 
 		netif_napi_add(priv->netdev, &tqp_vector->napi,
 			       hns3_nic_common_poll, NAPI_POLL_WEIGHT);
 	}
 
 	return 0;
+
+map_ring_fail:
+	while (i--)
+		netif_napi_del(&priv->tqp_vector[i].napi);
+
+	return ret;
 }
 
 static int hns3_nic_alloc_vector_data(struct hns3_nic_priv *priv)
@@ -3031,8 +3053,10 @@ static int hns3_queue_to_ring(struct hnae3_queue *tqp,
 		return ret;
 
 	ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX);
-	if (ret)
+	if (ret) {
+		devm_kfree(priv->dev, priv->ring_data[tqp->tqp_index].ring);
 		return ret;
+	}
 
 	return 0;
 }
@@ -3059,6 +3083,12 @@ static int hns3_get_ring_config(struct hns3_nic_priv *priv)
 
 	return 0;
 err:
+	while (i--) {
+		devm_kfree(priv->dev, priv->ring_data[i].ring);
+		devm_kfree(priv->dev,
+			   priv->ring_data[i + h->kinfo.num_tqps].ring);
+	}
+
 	devm_kfree(&pdev->dev, priv->ring_data);
 	return ret;
 }
@@ -3226,21 +3256,19 @@ int hns3_uninit_all_ring(struct hns3_nic_priv *priv)
 	int i;
 
 	for (i = 0; i < h->kinfo.num_tqps; i++) {
-		if (h->ae_algo->ops->reset_queue)
-			h->ae_algo->ops->reset_queue(h, i);
-
 		hns3_fini_ring(priv->ring_data[i].ring);
 		hns3_fini_ring(priv->ring_data[i + h->kinfo.num_tqps].ring);
 	}
 	return 0;
 }
 
 /* Set mac addr if it is configured. or leave it to the AE driver */
-static void hns3_init_mac_addr(struct net_device *netdev, bool init)
+static int hns3_init_mac_addr(struct net_device *netdev, bool init)
 {
 	struct hns3_nic_priv *priv = netdev_priv(netdev);
 	struct hnae3_handle *h = priv->ae_handle;
 	u8 mac_addr_temp[ETH_ALEN];
+	int ret = 0;
 
 	if (h->ae_algo->ops->get_mac_addr && init) {
 		h->ae_algo->ops->get_mac_addr(h, mac_addr_temp);
@@ -3255,8 +3283,9 @@ static void hns3_init_mac_addr(struct net_device *netdev, bool init)
 	}
 
 	if (h->ae_algo->ops->set_mac_addr)
-		h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr, true);
+		ret = h->ae_algo->ops->set_mac_addr(h, netdev->dev_addr, true);
 
+	return ret;
 }
 
 static int hns3_restore_fd_rules(struct net_device *netdev)
@@ -3469,20 +3498,29 @@ static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc)
 	return ret;
 }
 
-static void hns3_recover_hw_addr(struct net_device *ndev)
+static int hns3_recover_hw_addr(struct net_device *ndev)
 {
 	struct netdev_hw_addr_list *list;
 	struct netdev_hw_addr *ha, *tmp;
+	int ret = 0;
 
 	/* go through and sync uc_addr entries to the device */
 	list = &ndev->uc;
-	list_for_each_entry_safe(ha, tmp, &list->list, list)
-		hns3_nic_uc_sync(ndev, ha->addr);
+	list_for_each_entry_safe(ha, tmp, &list->list, list) {
+		ret = hns3_nic_uc_sync(ndev, ha->addr);
+		if (ret)
+			return ret;
+	}
 
 	/* go through and sync mc_addr entries to the device */
 	list = &ndev->mc;
-	list_for_each_entry_safe(ha, tmp, &list->list, list)
-		hns3_nic_mc_sync(ndev, ha->addr);
+	list_for_each_entry_safe(ha, tmp, &list->list, list) {
+		ret = hns3_nic_mc_sync(ndev, ha->addr);
+		if (ret)
+			return ret;
+	}
+
+	return ret;
 }
 
 static void hns3_remove_hw_addr(struct net_device *netdev)
@@ -3609,7 +3647,10 @@ int hns3_nic_reset_all_ring(struct hnae3_handle *h)
 	int ret;
 
 	for (i = 0; i < h->kinfo.num_tqps; i++) {
-		h->ae_algo->ops->reset_queue(h, i);
+		ret = h->ae_algo->ops->reset_queue(h, i);
+		if (ret)
+			return ret;
+
 		hns3_init_ring_hw(priv->ring_data[i].ring);
 
 		/* We need to clear tx ring here because self test will
@@ -3701,18 +3742,30 @@ static int hns3_reset_notify_init_enet(struct hnae3_handle *handle)
 	bool vlan_filter_enable;
 	int ret;
 
-	hns3_init_mac_addr(netdev, false);
-	hns3_recover_hw_addr(netdev);
-	hns3_update_promisc_mode(netdev, handle->netdev_flags);
+	ret = hns3_init_mac_addr(netdev, false);
+	if (ret)
+		return ret;
+
+	ret = hns3_recover_hw_addr(netdev);
+	if (ret)
+		return ret;
+
+	ret = hns3_update_promisc_mode(netdev, handle->netdev_flags);
+	if (ret)
+		return ret;
+
 	vlan_filter_enable = netdev->flags & IFF_PROMISC ? false : true;
 	hns3_enable_vlan_filter(netdev, vlan_filter_enable);
 
-
 	/* Hardware table is only clear when pf resets */
-	if (!(handle->flags & HNAE3_SUPPORT_VF))
-		hns3_restore_vlan(netdev);
+	if (!(handle->flags & HNAE3_SUPPORT_VF)) {
+		ret = hns3_restore_vlan(netdev);
+		return ret;
+	}
 
-	hns3_restore_fd_rules(netdev);
+	ret = hns3_restore_fd_rules(netdev);
+	if (ret)
+		return ret;
 
 	/* Carrier off reporting is important to ethtool even BEFORE open */
 	netif_carrier_off(netdev);

drivers/net/ethernet/hisilicon/hns3/hns3_enet.h

@@ -640,7 +640,7 @@ void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
 				 u32 rl_value);
 
 void hns3_enable_vlan_filter(struct net_device *netdev, bool enable);
-void hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags);
+int hns3_update_promisc_mode(struct net_device *netdev, u8 promisc_flags);
 
 #ifdef CONFIG_HNS3_DCB
 void hns3_dcbnl_setup(struct hnae3_handle *handle);

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.c

@@ -24,15 +24,15 @@ static int hclge_ring_space(struct hclge_cmq_ring *ring)
 	return ring->desc_num - used - 1;
 }
 
-static int is_valid_csq_clean_head(struct hclge_cmq_ring *ring, int h)
+static int is_valid_csq_clean_head(struct hclge_cmq_ring *ring, int head)
 {
-	int u = ring->next_to_use;
-	int c = ring->next_to_clean;
+	int ntu = ring->next_to_use;
+	int ntc = ring->next_to_clean;
 
-	if (unlikely(h >= ring->desc_num))
-		return 0;
+	if (ntu > ntc)
+		return head >= ntc && head <= ntu;
 
-	return u > c ? (h > c && h <= u) : (h > c || h <= u);
+	return head >= ntc || head <= ntu;
 }
 
 static int hclge_alloc_cmd_desc(struct hclge_cmq_ring *ring)
@@ -304,6 +304,10 @@ int hclge_cmd_queue_init(struct hclge_dev *hdev)
 {
 	int ret;
 
+	/* Setup the lock for command queue */
+	spin_lock_init(&hdev->hw.cmq.csq.lock);
+	spin_lock_init(&hdev->hw.cmq.crq.lock);
+
 	/* Setup the queue entries for use cmd queue */
 	hdev->hw.cmq.csq.desc_num = HCLGE_NIC_CMQ_DESC_NUM;
 	hdev->hw.cmq.crq.desc_num = HCLGE_NIC_CMQ_DESC_NUM;
@@ -337,18 +341,20 @@ int hclge_cmd_init(struct hclge_dev *hdev)
 	u32 version;
 	int ret;
 
+	spin_lock_bh(&hdev->hw.cmq.csq.lock);
+	spin_lock_bh(&hdev->hw.cmq.crq.lock);
+
 	hdev->hw.cmq.csq.next_to_clean = 0;
 	hdev->hw.cmq.csq.next_to_use = 0;
 	hdev->hw.cmq.crq.next_to_clean = 0;
 	hdev->hw.cmq.crq.next_to_use = 0;
 
-	/* Setup the lock for command queue */
-	spin_lock_init(&hdev->hw.cmq.csq.lock);
-	spin_lock_init(&hdev->hw.cmq.crq.lock);
-
 	hclge_cmd_init_regs(&hdev->hw);
 	clear_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state);
 
+	spin_unlock_bh(&hdev->hw.cmq.crq.lock);
+	spin_unlock_bh(&hdev->hw.cmq.csq.lock);
+
 	ret = hclge_cmd_query_firmware_version(&hdev->hw, &version);
 	if (ret) {
 		dev_err(&hdev->pdev->dev,