16 files changed, 106 insertions, 68 deletions

diff --git a/drivers/net/ethernet/broadcom/bgmac-platform.c b/drivers/net/ethernet/broadcom/bgmac-platform.c
index ecce23cecbea..4e266ce41180 100644
--- a/drivers/net/ethernet/broadcom/bgmac-platform.c
+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c
@@ -171,6 +171,7 @@ static int platform_phy_connect(struct bgmac *bgmac)
 static int bgmac_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
+	struct device_node *phy_node;
 	struct bgmac *bgmac;
 	struct resource *regs;
 	int ret;
@@ -236,7 +237,9 @@ static int bgmac_probe(struct platform_device *pdev)
 	bgmac->cco_ctl_maskset = platform_bgmac_cco_ctl_maskset;
 	bgmac->get_bus_clock = platform_bgmac_get_bus_clock;
 	bgmac->cmn_maskset32 = platform_bgmac_cmn_maskset32;
-	if (of_parse_phandle(np, "phy-handle", 0)) {
+	phy_node = of_parse_phandle(np, "phy-handle", 0);
+	if (phy_node) {
+		of_node_put(phy_node);
 		bgmac->phy_connect = platform_phy_connect;
 	} else {
 		bgmac->phy_connect = bgmac_phy_connect_direct;
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c
index 96fd31d75dfd..daa1ebaef511 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_main.c
@@ -346,8 +346,9 @@ static struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl,
 	 * driver. Once driver synthesizes cpl_pass_accept_req the skb will go
 	 * through the regular cpl_pass_accept_req processing in TOM.
 	 */
-	skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req)
-			- pktshift, GFP_ATOMIC);
+	skb = alloc_skb(size_add(gl->tot_len,
+				 sizeof(struct cpl_pass_accept_req)) -
+			pktshift, GFP_ATOMIC);
 	if (unlikely(!skb))
 		return NULL;
 	__skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req)
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 890f213da8d1..ae1f523d6841 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -172,6 +172,7 @@ err_init_txq:
 	hinic_sq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->txqs);
+	nic_dev->txqs = NULL;
 	return err;
 }
 
@@ -268,6 +269,7 @@ err_init_rxq:
 	hinic_rq_dbgfs_uninit(nic_dev);
 
 	devm_kfree(&netdev->dev, nic_dev->rxqs);
+	nic_dev->rxqs = NULL;
 	return err;
 }
 
diff --git a/drivers/net/ethernet/intel/idpf/idpf_dev.c b/drivers/net/ethernet/intel/idpf/idpf_dev.c
index 6c913a703df6..41e4bd49402a 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_dev.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_dev.c
@@ -101,6 +101,9 @@ static int idpf_intr_reg_init(struct idpf_vport *vport)
 		intr->dyn_ctl_itridx_s = PF_GLINT_DYN_CTL_ITR_INDX_S;
 		intr->dyn_ctl_intrvl_s = PF_GLINT_DYN_CTL_INTERVAL_S;
 		intr->dyn_ctl_wb_on_itr_m = PF_GLINT_DYN_CTL_WB_ON_ITR_M;
+		intr->dyn_ctl_swint_trig_m = PF_GLINT_DYN_CTL_SWINT_TRIG_M;
+		intr->dyn_ctl_sw_itridx_ena_m =
+			PF_GLINT_DYN_CTL_SW_ITR_INDX_ENA_M;
 
 		spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
 					       IDPF_PF_ITR_IDX_SPACING);
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.c b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
index 34f4118c7bc0..2fa9c36e33c9 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.c
@@ -3604,21 +3604,31 @@ static void idpf_vport_intr_dis_irq_all(struct idpf_vport *vport)
 /**
  * idpf_vport_intr_buildreg_itr - Enable default interrupt generation settings
  * @q_vector: pointer to q_vector
- * @type: itr index
- * @itr: itr value
  */
-static u32 idpf_vport_intr_buildreg_itr(struct idpf_q_vector *q_vector,
-					const int type, u16 itr)
+static u32 idpf_vport_intr_buildreg_itr(struct idpf_q_vector *q_vector)
 {
-	u32 itr_val;
+	u32 itr_val = q_vector->intr_reg.dyn_ctl_intena_m;
+	int type = IDPF_NO_ITR_UPDATE_IDX;
+	u16 itr = 0;
+
+	if (q_vector->wb_on_itr) {
+		/*
+		 * Trigger a software interrupt when exiting wb_on_itr, to make
+		 * sure we catch any pending write backs that might have been
+		 * missed due to interrupt state transition.
+		 */
+		itr_val |= q_vector->intr_reg.dyn_ctl_swint_trig_m |
+			   q_vector->intr_reg.dyn_ctl_sw_itridx_ena_m;
+		type = IDPF_SW_ITR_UPDATE_IDX;
+		itr = IDPF_ITR_20K;
+	}
 
 	itr &= IDPF_ITR_MASK;
 	/* Don't clear PBA because that can cause lost interrupts that
 	 * came in while we were cleaning/polling
 	 */
-	itr_val = q_vector->intr_reg.dyn_ctl_intena_m |
-		  (type << q_vector->intr_reg.dyn_ctl_itridx_s) |
-		  (itr << (q_vector->intr_reg.dyn_ctl_intrvl_s - 1));
+	itr_val |= (type << q_vector->intr_reg.dyn_ctl_itridx_s) |
+		   (itr << (q_vector->intr_reg.dyn_ctl_intrvl_s - 1));
 
 	return itr_val;
 }
@@ -3716,9 +3726,8 @@ void idpf_vport_intr_update_itr_ena_irq(struct idpf_q_vector *q_vector)
 	/* net_dim() updates ITR out-of-band using a work item */
 	idpf_net_dim(q_vector);
 
+	intval = idpf_vport_intr_buildreg_itr(q_vector);
 	q_vector->wb_on_itr = false;
-	intval = idpf_vport_intr_buildreg_itr(q_vector,
-					      IDPF_NO_ITR_UPDATE_IDX, 0);
 
 	writel(intval, q_vector->intr_reg.dyn_ctl);
 }
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
index 9c1fe84108ed..0f71a6f5557b 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -354,6 +354,8 @@ struct idpf_vec_regs {
  * @dyn_ctl_itridx_m: Mask for ITR index
  * @dyn_ctl_intrvl_s: Register bit offset for ITR interval
  * @dyn_ctl_wb_on_itr_m: Mask for WB on ITR feature
+ * @dyn_ctl_sw_itridx_ena_m: Mask for SW ITR index
+ * @dyn_ctl_swint_trig_m: Mask for dyn_ctl SW triggered interrupt enable
  * @rx_itr: RX ITR register
  * @tx_itr: TX ITR register
  * @icr_ena: Interrupt cause register offset
@@ -367,6 +369,8 @@ struct idpf_intr_reg {
 	u32 dyn_ctl_itridx_m;
 	u32 dyn_ctl_intrvl_s;
 	u32 dyn_ctl_wb_on_itr_m;
+	u32 dyn_ctl_sw_itridx_ena_m;
+	u32 dyn_ctl_swint_trig_m;
 	void __iomem *rx_itr;
 	void __iomem *tx_itr;
 	void __iomem *icr_ena;
@@ -437,7 +441,7 @@ struct idpf_q_vector {
 	cpumask_var_t affinity_mask;
 	__cacheline_group_end_aligned(cold);
 };
-libeth_cacheline_set_assert(struct idpf_q_vector, 112,
+libeth_cacheline_set_assert(struct idpf_q_vector, 120,
 			    24 + sizeof(struct napi_struct) +
 			    2 * sizeof(struct dim),
 			    8 + sizeof(cpumask_var_t));
@@ -471,6 +475,8 @@ struct idpf_tx_queue_stats {
 #define IDPF_ITR_IS_DYNAMIC(itr_mode) (itr_mode)
 #define IDPF_ITR_TX_DEF		IDPF_ITR_20K
 #define IDPF_ITR_RX_DEF		IDPF_ITR_20K
+/* Index used for 'SW ITR' update in DYN_CTL register */
+#define IDPF_SW_ITR_UPDATE_IDX	2
 /* Index used for 'No ITR' update in DYN_CTL register */
 #define IDPF_NO_ITR_UPDATE_IDX	3
 #define IDPF_ITR_IDX_SPACING(spacing, dflt)	(spacing ? spacing : dflt)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c b/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c
index aad62e270ae4..aba828abcb17 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_vf_dev.c
@@ -101,6 +101,9 @@ static int idpf_vf_intr_reg_init(struct idpf_vport *vport)
 		intr->dyn_ctl_itridx_s = VF_INT_DYN_CTLN_ITR_INDX_S;
 		intr->dyn_ctl_intrvl_s = VF_INT_DYN_CTLN_INTERVAL_S;
 		intr->dyn_ctl_wb_on_itr_m = VF_INT_DYN_CTLN_WB_ON_ITR_M;
+		intr->dyn_ctl_swint_trig_m = VF_INT_DYN_CTLN_SWINT_TRIG_M;
+		intr->dyn_ctl_sw_itridx_ena_m =
+			VF_INT_DYN_CTLN_SW_ITR_INDX_ENA_M;
 
 		spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
 					       IDPF_VF_ITR_IDX_SPACING);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 232b10740c13..04e08e06f30f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -680,14 +680,17 @@ int rvu_rep_create(struct otx2_nic *priv, struct netlink_ext_ack *extack)
 		ndev->features |= ndev->hw_features;
 		eth_hw_addr_random(ndev);
 		err = rvu_rep_devlink_port_register(rep);
-		if (err)
+		if (err) {
+			free_netdev(ndev);
 			goto exit;
+		}
 
 		SET_NETDEV_DEVLINK_PORT(ndev, &rep->dl_port);
 		err = register_netdev(ndev);
 		if (err) {
 			NL_SET_ERR_MSG_MOD(extack,
 					   "PFVF representor registration failed");
+			rvu_rep_devlink_port_unregister(rep);
 			free_netdev(ndev);
 			goto exit;
 		}
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 3d72aa7b1305..ef93df520887 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -1432,7 +1432,7 @@ void ocelot_ifh_set_basic(void *ifh, struct ocelot *ocelot, int port,
 
 	memset(ifh, 0, OCELOT_TAG_LEN);
 	ocelot_ifh_set_bypass(ifh, 1);
-	ocelot_ifh_set_src(ifh, BIT_ULL(ocelot->num_phys_ports));
+	ocelot_ifh_set_src(ifh, ocelot->num_phys_ports);
 	ocelot_ifh_set_dest(ifh, BIT_ULL(port));
 	ocelot_ifh_set_qos_class(ifh, qos_class);
 	ocelot_ifh_set_tag_type(ifh, tag_type);
diff --git a/drivers/net/ethernet/oa_tc6.c b/drivers/net/ethernet/oa_tc6.c
index f9c0dcd965c2..db200e4ec284 100644
--- a/drivers/net/ethernet/oa_tc6.c
+++ b/drivers/net/ethernet/oa_tc6.c
@@ -113,6 +113,7 @@ struct oa_tc6 {
 	struct mii_bus *mdiobus;
 	struct spi_device *spi;
 	struct mutex spi_ctrl_lock; /* Protects spi control transfer */
+	spinlock_t tx_skb_lock; /* Protects tx skb handling */
 	void *spi_ctrl_tx_buf;
 	void *spi_ctrl_rx_buf;
 	void *spi_data_tx_buf;
@@ -1004,8 +1005,10 @@ static u16 oa_tc6_prepare_spi_tx_buf_for_tx_skbs(struct oa_tc6 *tc6)
 	for (used_tx_credits = 0; used_tx_credits < tc6->tx_credits;
 	     used_tx_credits++) {
 		if (!tc6->ongoing_tx_skb) {
+			spin_lock_bh(&tc6->tx_skb_lock);
 			tc6->ongoing_tx_skb = tc6->waiting_tx_skb;
 			tc6->waiting_tx_skb = NULL;
+			spin_unlock_bh(&tc6->tx_skb_lock);
 		}
 		if (!tc6->ongoing_tx_skb)
 			break;
@@ -1111,8 +1114,9 @@ static int oa_tc6_spi_thread_handler(void *data)
 		/* This kthread will be waken up if there is a tx skb or mac-phy
 		 * interrupt to perform spi transfer with tx chunks.
 		 */
-		wait_event_interruptible(tc6->spi_wq, tc6->waiting_tx_skb ||
-					 tc6->int_flag ||
+		wait_event_interruptible(tc6->spi_wq, tc6->int_flag ||
+					 (tc6->waiting_tx_skb &&
+					 tc6->tx_credits) ||
 					 kthread_should_stop());
 
 		if (kthread_should_stop())
@@ -1209,7 +1213,9 @@ netdev_tx_t oa_tc6_start_xmit(struct oa_tc6 *tc6, struct sk_buff *skb)
 		return NETDEV_TX_OK;
 	}
 
+	spin_lock_bh(&tc6->tx_skb_lock);
 	tc6->waiting_tx_skb = skb;
+	spin_unlock_bh(&tc6->tx_skb_lock);
 
 	/* Wake spi kthread to perform spi transfer */
 	wake_up_interruptible(&tc6->spi_wq);
@@ -1239,6 +1245,7 @@ struct oa_tc6 *oa_tc6_init(struct spi_device *spi, struct net_device *netdev)
 	tc6->netdev = netdev;
 	SET_NETDEV_DEV(netdev, &spi->dev);
 	mutex_init(&tc6->spi_ctrl_lock);
+	spin_lock_init(&tc6->tx_skb_lock);
 
 	/* Set the SPI controller to pump at realtime priority */
 	tc6->spi->rt = true;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index 9e42d599840d..57edcde9e6f8 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -277,7 +277,10 @@ void ionic_dev_teardown(struct ionic *ionic)
 	idev->phy_cmb_pages = 0;
 	idev->cmb_npages = 0;
 
-	destroy_workqueue(ionic->wq);
+	if (ionic->wq) {
+		destroy_workqueue(ionic->wq);
+		ionic->wq = NULL;
+	}
 	mutex_destroy(&idev->cmb_inuse_lock);
 }
 
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
index dda22fa4448c..9b7f78b6cdb1 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
@@ -961,8 +961,8 @@ static int ionic_get_module_eeprom(struct net_device *netdev,
 	len = min_t(u32, sizeof(xcvr->sprom), ee->len);
 
 	do {
-		memcpy(data, xcvr->sprom, len);
-		memcpy(tbuf, xcvr->sprom, len);
+		memcpy(data, &xcvr->sprom[ee->offset], len);
+		memcpy(tbuf, &xcvr->sprom[ee->offset], len);
 
 		/* Let's make sure we got a consistent copy */
 		if (!memcmp(data, tbuf, len))
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index 40496587b2b3..3d3f936779f7 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -3869,8 +3869,8 @@ int ionic_lif_register(struct ionic_lif *lif)
 	/* only register LIF0 for now */
 	err = register_netdev(lif->netdev);
 	if (err) {
-		dev_err(lif->ionic->dev, "Cannot register net device, aborting\n");
-		ionic_lif_unregister_phc(lif);
+		dev_err(lif->ionic->dev, "Cannot register net device: %d, aborting\n", err);
+		ionic_lif_unregister(lif);
 		return err;
 	}
 
diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
index b45efc272fdb..c7f497c36f66 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -3358,6 +3358,7 @@ int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn)
 					     p_ptt, &nvm_info.num_images);
 	if (rc == -EOPNOTSUPP) {
 		DP_INFO(p_hwfn, "DRV_MSG_CODE_BIST_TEST is not supported\n");
+		nvm_info.num_images = 0;
 		goto out;
 	} else if (rc || !nvm_info.num_images) {
 		DP_ERR(p_hwfn, "Failed getting number of images\n");
diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c
index dbbbf024e7ab..9ac6e2aad18f 100644
--- a/drivers/net/ethernet/renesas/rswitch.c
+++ b/drivers/net/ethernet/renesas/rswitch.c
@@ -547,7 +547,6 @@ static int rswitch_gwca_ts_queue_alloc(struct rswitch_private *priv)
 	desc = &gq->ts_ring[gq->ring_size];
 	desc->desc.die_dt = DT_LINKFIX;
 	rswitch_desc_set_dptr(&desc->desc, gq->ring_dma);
-	INIT_LIST_HEAD(&priv->gwca.ts_info_list);
 
 	return 0;
 }
@@ -1003,9 +1002,10 @@ static int rswitch_gwca_request_irqs(struct rswitch_private *priv)
 static void rswitch_ts(struct rswitch_private *priv)
 {
 	struct rswitch_gwca_queue *gq = &priv->gwca.ts_queue;
-	struct rswitch_gwca_ts_info *ts_info, *ts_info2;
 	struct skb_shared_hwtstamps shhwtstamps;
 	struct rswitch_ts_desc *desc;
+	struct rswitch_device *rdev;
+	struct sk_buff *ts_skb;
 	struct timespec64 ts;
 	unsigned int num;
 	u32 tag, port;
@@ -1015,23 +1015,28 @@ static void rswitch_ts(struct rswitch_private *priv)
 		dma_rmb();
 
 		port = TS_DESC_DPN(__le32_to_cpu(desc->desc.dptrl));
-		tag = TS_DESC_TSUN(__le32_to_cpu(desc->desc.dptrl));
-
-		list_for_each_entry_safe(ts_info, ts_info2, &priv->gwca.ts_info_list, list) {
-			if (!(ts_info->port == port && ts_info->tag == tag))
-				continue;
-
-			memset(&shhwtstamps, 0, sizeof(shhwtstamps));
-			ts.tv_sec = __le32_to_cpu(desc->ts_sec);
-			ts.tv_nsec = __le32_to_cpu(desc->ts_nsec & cpu_to_le32(0x3fffffff));
-			shhwtstamps.hwtstamp = timespec64_to_ktime(ts);
-			skb_tstamp_tx(ts_info->skb, &shhwtstamps);
-			dev_consume_skb_irq(ts_info->skb);
-			list_del(&ts_info->list);
-			kfree(ts_info);
-			break;
-		}
+		if (unlikely(port >= RSWITCH_NUM_PORTS))
+			goto next;
+		rdev = priv->rdev[port];
 
+		tag = TS_DESC_TSUN(__le32_to_cpu(desc->desc.dptrl));
+		if (unlikely(tag >= TS_TAGS_PER_PORT))
+			goto next;
+		ts_skb = xchg(&rdev->ts_skb[tag], NULL);
+		smp_mb(); /* order rdev->ts_skb[] read before bitmap update */
+		clear_bit(tag, rdev->ts_skb_used);
+
+		if (unlikely(!ts_skb))
+			goto next;
+
+		memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+		ts.tv_sec = __le32_to_cpu(desc->ts_sec);
+		ts.tv_nsec = __le32_to_cpu(desc->ts_nsec & cpu_to_le32(0x3fffffff));
+		shhwtstamps.hwtstamp = timespec64_to_ktime(ts);
+		skb_tstamp_tx(ts_skb, &shhwtstamps);
+		dev_consume_skb_irq(ts_skb);
+
+next:
 		gq->cur = rswitch_next_queue_index(gq, true, 1);
 		desc = &gq->ts_ring[gq->cur];
 	}
@@ -1576,8 +1581,9 @@ static int rswitch_open(struct net_device *ndev)
 static int rswitch_stop(struct net_device *ndev)
 {
 	struct rswitch_device *rdev = netdev_priv(ndev);
-	struct rswitch_gwca_ts_info *ts_info, *ts_info2;
+	struct sk_buff *ts_skb;
 	unsigned long flags;
+	unsigned int tag;
 
 	netif_tx_stop_all_queues(ndev);
 
@@ -1594,12 +1600,13 @@ static int rswitch_stop(struct net_device *ndev)
 	if (bitmap_empty(rdev->priv->opened_ports, RSWITCH_NUM_PORTS))
 		iowrite32(GWCA_TS_IRQ_BIT, rdev->priv->addr + GWTSDID);
 
-	list_for_each_entry_safe(ts_info, ts_info2, &rdev->priv->gwca.ts_info_list, list) {
-		if (ts_info->port != rdev->port)
-			continue;
-		dev_kfree_skb_irq(ts_info->skb);
-		list_del(&ts_info->list);
-		kfree(ts_info);
+	for (tag = find_first_bit(rdev->ts_skb_used, TS_TAGS_PER_PORT);
+	     tag < TS_TAGS_PER_PORT;
+	     tag = find_next_bit(rdev->ts_skb_used, TS_TAGS_PER_PORT, tag + 1)) {
+		ts_skb = xchg(&rdev->ts_skb[tag], NULL);
+		clear_bit(tag, rdev->ts_skb_used);
+		if (ts_skb)
+			dev_kfree_skb(ts_skb);
 	}
 
 	return 0;
@@ -1612,20 +1619,17 @@ static bool rswitch_ext_desc_set_info1(struct rswitch_device *rdev,
 	desc->info1 = cpu_to_le64(INFO1_DV(BIT(rdev->etha->index)) |
 				  INFO1_IPV(GWCA_IPV_NUM) | INFO1_FMT);
 	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
-		struct rswitch_gwca_ts_info *ts_info;
+		unsigned int tag;
 
-		ts_info = kzalloc(sizeof(*ts_info), GFP_ATOMIC);
-		if (!ts_info)
+		tag = find_first_zero_bit(rdev->ts_skb_used, TS_TAGS_PER_PORT);
+		if (tag == TS_TAGS_PER_PORT)
 			return false;
+		smp_mb(); /* order bitmap read before rdev->ts_skb[] write */
+		rdev->ts_skb[tag] = skb_get(skb);
+		set_bit(tag, rdev->ts_skb_used);
 
 		skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
-		rdev->ts_tag++;
-		desc->info1 |= cpu_to_le64(INFO1_TSUN(rdev->ts_tag) | INFO1_TXC);
-
-		ts_info->skb = skb_get(skb);
-		ts_info->port = rdev->port;
-		ts_info->tag = rdev->ts_tag;
-		list_add_tail(&ts_info->list, &rdev->priv->gwca.ts_info_list);
+		desc->info1 |= cpu_to_le64(INFO1_TSUN(tag) | INFO1_TXC);
 
 		skb_tx_timestamp(skb);
 	}
diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h
index e020800dcc57..d8d4ed7d7f8b 100644
--- a/drivers/net/ethernet/renesas/rswitch.h
+++ b/drivers/net/ethernet/renesas/rswitch.h
@@ -972,14 +972,6 @@ struct rswitch_gwca_queue {
 	};
 };
 
-struct rswitch_gwca_ts_info {
-	struct sk_buff *skb;
-	struct list_head list;
-
-	int port;
-	u8 tag;
-};
-
 #define RSWITCH_NUM_IRQ_REGS	(RSWITCH_MAX_NUM_QUEUES / BITS_PER_TYPE(u32))
 struct rswitch_gwca {
 	unsigned int index;
@@ -989,7 +981,6 @@ struct rswitch_gwca {
 	struct rswitch_gwca_queue *queues;
 	int num_queues;
 	struct rswitch_gwca_queue ts_queue;
-	struct list_head ts_info_list;
 	DECLARE_BITMAP(used, RSWITCH_MAX_NUM_QUEUES);
 	u32 tx_irq_bits[RSWITCH_NUM_IRQ_REGS];
 	u32 rx_irq_bits[RSWITCH_NUM_IRQ_REGS];
@@ -997,6 +988,7 @@ struct rswitch_gwca {
 };
 
 #define NUM_QUEUES_PER_NDEV	2
+#define TS_TAGS_PER_PORT	256
 struct rswitch_device {
 	struct rswitch_private *priv;
 	struct net_device *ndev;
@@ -1004,7 +996,8 @@ struct rswitch_device {
 	void __iomem *addr;
 	struct rswitch_gwca_queue *tx_queue;
 	struct rswitch_gwca_queue *rx_queue;
-	u8 ts_tag;
+	struct sk_buff *ts_skb[TS_TAGS_PER_PORT];
+	DECLARE_BITMAP(ts_skb_used, TS_TAGS_PER_PORT);
 	bool disabled;
 
 	int port;