--- zzzz-none-000/linux-3.10.107/drivers/net/ethernet/octeon/octeon_mgmt.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/net/ethernet/octeon/octeon_mgmt.c	2021-02-04 17:41:59.000000000 +0000
@@ -247,28 +247,6 @@
 	}
 }
 
-static ktime_t ptp_to_ktime(u64 ptptime)
-{
-	ktime_t ktimebase;
-	u64 ptpbase;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	/* Fill the icache with the code */
-	ktime_get_real();
-	/* Flush all pending operations */
-	mb();
-	/* Read the time and PTP clock as close together as
-	 * possible. It is important that this sequence take the same
-	 * amount of time to reduce jitter
-	 */
-	ktimebase = ktime_get_real();
-	ptpbase = cvmx_read_csr(CVMX_MIO_PTP_CLOCK_HI);
-	local_irq_restore(flags);
-
-	return ktime_sub_ns(ktimebase, ptpbase - ptptime);
-}
-
 static void octeon_mgmt_clean_tx_buffers(struct octeon_mgmt *p)
 {
 	union cvmx_mixx_orcnt mix_orcnt;
@@ -312,12 +290,14 @@
 		/* Read the hardware TX timestamp if one was recorded */
 		if (unlikely(re.s.tstamp)) {
 			struct skb_shared_hwtstamps ts;
+			u64 ns;
+
+			memset(&ts, 0, sizeof(ts));
 			/* Read the timestamp */
-			u64 ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
+			ns = cvmx_read_csr(CVMX_MIXX_TSTAMP(p->port));
 			/* Remove the timestamp from the FIFO */
 			cvmx_write_csr(CVMX_MIXX_TSCTL(p->port), 0);
 			/* Tell the kernel about the timestamp */
-			ts.syststamp = ptp_to_ktime(ns);
 			ts.hwtstamp = ns_to_ktime(ns);
 			skb_tstamp_tx(skb, &ts);
 		}
@@ -429,7 +409,6 @@
 			struct skb_shared_hwtstamps *ts;
 			ts = skb_hwtstamps(skb);
 			ts->hwtstamp = ns_to_ktime(ns);
-			ts->syststamp = ptp_to_ktime(ns);
 			__skb_pull(skb, 8);
 		}
 		skb->protocol = eth_type_trans(skb, netdev);
@@ -1365,10 +1344,6 @@
 	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
 	strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
 	strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
-	info->n_stats = 0;
-	info->testinfo_len = 0;
-	info->regdump_len = 0;
-	info->eedump_len = 0;
 }
 
 static int octeon_mgmt_get_settings(struct net_device *netdev,
@@ -1448,7 +1423,7 @@
 
 	SET_NETDEV_DEV(netdev, &pdev->dev);
 
-	dev_set_drvdata(&pdev->dev, netdev);
+	platform_set_drvdata(pdev, netdev);
 	p = netdev_priv(netdev);
 	netif_napi_add(netdev, &p->napi, octeon_mgmt_napi_poll,
 		       OCTEON_MGMT_NAPI_WEIGHT);
@@ -1545,15 +1520,16 @@
 
 	mac = of_get_mac_address(pdev->dev.of_node);
 
-	if (mac && is_valid_ether_addr(mac))
+	if (mac)
 		memcpy(netdev->dev_addr, mac, ETH_ALEN);
 	else
 		eth_hw_addr_random(netdev);
 
 	p->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
 
-	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
-	pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+	result = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (result)
+		goto err;
 
 	netif_carrier_off(netdev);
 	result = register_netdev(netdev);
@@ -1570,14 +1546,14 @@
 
 static int octeon_mgmt_remove(struct platform_device *pdev)
 {
-	struct net_device *netdev = dev_get_drvdata(&pdev->dev);
+	struct net_device *netdev = platform_get_drvdata(pdev);
 
 	unregister_netdev(netdev);
 	free_netdev(netdev);
 	return 0;
 }
 
-static struct of_device_id octeon_mgmt_match[] = {
+static const struct of_device_id octeon_mgmt_match[] = {
 	{
 		.compatible = "cavium,octeon-5750-mix",
 	},
@@ -1588,7 +1564,6 @@
 static struct platform_driver octeon_mgmt_driver = {
 	.driver = {
 		.name		= "octeon_mgmt",
-		.owner		= THIS_MODULE,
 		.of_match_table = octeon_mgmt_match,
 	},
 	.probe		= octeon_mgmt_probe,