Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2133 insertions, 0 deletions

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
new file mode 100644
index 0000000000..a530f20ee2
--- /dev/null
+++ b/drivers/net/usb/smsc95xx.c
@@ -0,0 +1,2133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+ /***************************************************************************
+ *
+ * Copyright (C) 2007-2008 SMSC
+ *
+ *****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/kmod.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/bitrev.h>
+#include <linux/crc16.h>
+#include <linux/crc32.h>
+#include <linux/usb/usbnet.h>
+#include <linux/slab.h>
+#include <linux/of_net.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/mdio.h>
+#include <linux/phy.h>
+#include <net/selftests.h>
+
+#include "smsc95xx.h"
+
+#define SMSC_CHIPNAME			"smsc95xx"
+#define SMSC_DRIVER_VERSION		"2.0.0"
+#define HS_USB_PKT_SIZE			(512)
+#define FS_USB_PKT_SIZE			(64)
+#define DEFAULT_HS_BURST_CAP_SIZE	(16 * 1024 + 5 * HS_USB_PKT_SIZE)
+#define DEFAULT_FS_BURST_CAP_SIZE	(6 * 1024 + 33 * FS_USB_PKT_SIZE)
+#define DEFAULT_BULK_IN_DELAY		(0x00002000)
+#define MAX_SINGLE_PACKET_SIZE		(2048)
+#define LAN95XX_EEPROM_MAGIC		(0x9500)
+#define EEPROM_MAC_OFFSET		(0x01)
+#define DEFAULT_TX_CSUM_ENABLE		(true)
+#define DEFAULT_RX_CSUM_ENABLE		(true)
+#define SMSC95XX_INTERNAL_PHY_ID	(1)
+#define SMSC95XX_TX_OVERHEAD		(8)
+#define SMSC95XX_TX_OVERHEAD_CSUM	(12)
+#define SUPPORTED_WAKE			(WAKE_PHY | WAKE_UCAST | WAKE_BCAST | \
+					 WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
+
+#define FEATURE_8_WAKEUP_FILTERS	(0x01)
+#define FEATURE_PHY_NLP_CROSSOVER	(0x02)
+#define FEATURE_REMOTE_WAKEUP		(0x04)
+
+#define SUSPEND_SUSPEND0		(0x01)
+#define SUSPEND_SUSPEND1		(0x02)
+#define SUSPEND_SUSPEND2		(0x04)
+#define SUSPEND_SUSPEND3		(0x08)
+#define SUSPEND_ALLMODES		(SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
+					 SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
+
+#define SMSC95XX_NR_IRQS		(1) /* raise to 12 for GPIOs */
+#define PHY_HWIRQ			(SMSC95XX_NR_IRQS - 1)
+
+struct smsc95xx_priv {
+	u32 mac_cr;
+	u32 hash_hi;
+	u32 hash_lo;
+	u32 wolopts;
+	spinlock_t mac_cr_lock;
+	u8 features;
+	u8 suspend_flags;
+	bool is_internal_phy;
+	struct irq_chip irqchip;
+	struct irq_domain *irqdomain;
+	struct fwnode_handle *irqfwnode;
+	struct mii_bus *mdiobus;
+	struct phy_device *phydev;
+	struct task_struct *pm_task;
+};
+
+static bool turbo_mode = true;
+module_param(turbo_mode, bool, 0644);
+MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+
+static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
+					  u32 *data)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 buf;
+	int ret;
+	int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
+
+	if (current != pdata->pm_task)
+		fn = usbnet_read_cmd;
+	else
+		fn = usbnet_read_cmd_nopm;
+
+	ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
+		 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		 0, index, &buf, 4);
+	if (ret < 4) {
+		ret = ret < 0 ? ret : -ENODATA;
+
+		if (ret != -ENODEV)
+			netdev_warn(dev->net, "Failed to read reg index 0x%08x: %d\n",
+				    index, ret);
+		return ret;
+	}
+
+	le32_to_cpus(&buf);
+	*data = buf;
+
+	return ret;
+}
+
+static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
+					   u32 data)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 buf;
+	int ret;
+	int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
+
+	if (current != pdata->pm_task)
+		fn = usbnet_write_cmd;
+	else
+		fn = usbnet_write_cmd_nopm;
+
+	buf = data;
+	cpu_to_le32s(&buf);
+
+	ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
+		 | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+		 0, index, &buf, 4);
+	if (ret < 0 && ret != -ENODEV)
+		netdev_warn(dev->net, "Failed to write reg index 0x%08x: %d\n",
+			    index, ret);
+
+	return ret;
+}
+
+/* Loop until the read is completed with timeout
+ * called with phy_mutex held */
+static int __must_check smsc95xx_phy_wait_not_busy(struct usbnet *dev)
+{
+	unsigned long start_time = jiffies;
+	u32 val;
+	int ret;
+
+	do {
+		ret = smsc95xx_read_reg(dev, MII_ADDR, &val);
+		if (ret < 0) {
+			/* Ignore -ENODEV error during disconnect() */
+			if (ret == -ENODEV)
+				return 0;
+			netdev_warn(dev->net, "Error reading MII_ACCESS\n");
+			return ret;
+		}
+
+		if (!(val & MII_BUSY_))
+			return 0;
+	} while (!time_after(jiffies, start_time + HZ));
+
+	return -EIO;
+}
+
+static u32 mii_address_cmd(int phy_id, int idx, u16 op)
+{
+	return (phy_id & 0x1f) << 11 | (idx & 0x1f) << 6 | op;
+}
+
+static int smsc95xx_mdio_read(struct usbnet *dev, int phy_id, int idx)
+{
+	u32 val, addr;
+	int ret;
+
+	mutex_lock(&dev->phy_mutex);
+
+	/* confirm MII not busy */
+	ret = smsc95xx_phy_wait_not_busy(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "%s: MII is busy\n", __func__);
+		goto done;
+	}
+
+	/* set the address, index & direction (read from PHY) */
+	addr = mii_address_cmd(phy_id, idx, MII_READ_ | MII_BUSY_);
+	ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
+	if (ret < 0) {
+		if (ret != -ENODEV)
+			netdev_warn(dev->net, "Error writing MII_ADDR\n");
+		goto done;
+	}
+
+	ret = smsc95xx_phy_wait_not_busy(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Timed out reading MII reg %02X\n", idx);
+		goto done;
+	}
+
+	ret = smsc95xx_read_reg(dev, MII_DATA, &val);
+	if (ret < 0) {
+		if (ret != -ENODEV)
+			netdev_warn(dev->net, "Error reading MII_DATA\n");
+		goto done;
+	}
+
+	ret = (u16)(val & 0xFFFF);
+
+done:
+	mutex_unlock(&dev->phy_mutex);
+
+	/* Ignore -ENODEV error during disconnect() */
+	if (ret == -ENODEV)
+		return 0;
+	return ret;
+}
+
+static void smsc95xx_mdio_write(struct usbnet *dev, int phy_id, int idx,
+				int regval)
+{
+	u32 val, addr;
+	int ret;
+
+	mutex_lock(&dev->phy_mutex);
+
+	/* confirm MII not busy */
+	ret = smsc95xx_phy_wait_not_busy(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "%s: MII is busy\n", __func__);
+		goto done;
+	}
+
+	val = regval;
+	ret = smsc95xx_write_reg(dev, MII_DATA, val);
+	if (ret < 0) {
+		if (ret != -ENODEV)
+			netdev_warn(dev->net, "Error writing MII_DATA\n");
+		goto done;
+	}
+
+	/* set the address, index & direction (write to PHY) */
+	addr = mii_address_cmd(phy_id, idx, MII_WRITE_ | MII_BUSY_);
+	ret = smsc95xx_write_reg(dev, MII_ADDR, addr);
+	if (ret < 0) {
+		if (ret != -ENODEV)
+			netdev_warn(dev->net, "Error writing MII_ADDR\n");
+		goto done;
+	}
+
+	ret = smsc95xx_phy_wait_not_busy(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Timed out writing MII reg %02X\n", idx);
+		goto done;
+	}
+
+done:
+	mutex_unlock(&dev->phy_mutex);
+}
+
+static int smsc95xx_mdiobus_reset(struct mii_bus *bus)
+{
+	struct smsc95xx_priv *pdata;
+	struct usbnet *dev;
+	u32 val;
+	int ret;
+
+	dev = bus->priv;
+	pdata = dev->driver_priv;
+
+	if (pdata->is_internal_phy)
+		return 0;
+
+	mutex_lock(&dev->phy_mutex);
+
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		goto reset_out;
+
+	val |= PM_CTL_PHY_RST_;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		goto reset_out;
+
+	/* Driver has no knowledge at this point about the external PHY.
+	 * The 802.3 specifies that the reset process shall
+	 * be completed within 0.5 s.
+	 */
+	fsleep(500000);
+
+reset_out:
+	mutex_unlock(&dev->phy_mutex);
+
+	return 0;
+}
+
+static int smsc95xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx)
+{
+	struct usbnet *dev = bus->priv;
+
+	return smsc95xx_mdio_read(dev, phy_id, idx);
+}
+
+static int smsc95xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx,
+				  u16 regval)
+{
+	struct usbnet *dev = bus->priv;
+
+	smsc95xx_mdio_write(dev, phy_id, idx, regval);
+	return 0;
+}
+
+static int __must_check smsc95xx_wait_eeprom(struct usbnet *dev)
+{
+	unsigned long start_time = jiffies;
+	u32 val;
+	int ret;
+
+	do {
+		ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error reading E2P_CMD\n");
+			return ret;
+		}
+
+		if (!(val & E2P_CMD_BUSY_) || (val & E2P_CMD_TIMEOUT_))
+			break;
+		udelay(40);
+	} while (!time_after(jiffies, start_time + HZ));
+
+	if (val & (E2P_CMD_TIMEOUT_ | E2P_CMD_BUSY_)) {
+		netdev_warn(dev->net, "EEPROM read operation timeout\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int __must_check smsc95xx_eeprom_confirm_not_busy(struct usbnet *dev)
+{
+	unsigned long start_time = jiffies;
+	u32 val;
+	int ret;
+
+	do {
+		ret = smsc95xx_read_reg(dev, E2P_CMD, &val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error reading E2P_CMD\n");
+			return ret;
+		}
+
+		if (!(val & E2P_CMD_BUSY_))
+			return 0;
+
+		udelay(40);
+	} while (!time_after(jiffies, start_time + HZ));
+
+	netdev_warn(dev->net, "EEPROM is busy\n");
+	return -EIO;
+}
+
+static int smsc95xx_read_eeprom(struct usbnet *dev, u32 offset, u32 length,
+				u8 *data)
+{
+	u32 val;
+	int i, ret;
+
+	BUG_ON(!dev);
+	BUG_ON(!data);
+
+	ret = smsc95xx_eeprom_confirm_not_busy(dev);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < length; i++) {
+		val = E2P_CMD_BUSY_ | E2P_CMD_READ_ | (offset & E2P_CMD_ADDR_);
+		ret = smsc95xx_write_reg(dev, E2P_CMD, val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error writing E2P_CMD\n");
+			return ret;
+		}
+
+		ret = smsc95xx_wait_eeprom(dev);
+		if (ret < 0)
+			return ret;
+
+		ret = smsc95xx_read_reg(dev, E2P_DATA, &val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error reading E2P_DATA\n");
+			return ret;
+		}
+
+		data[i] = val & 0xFF;
+		offset++;
+	}
+
+	return 0;
+}
+
+static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
+				 u8 *data)
+{
+	u32 val;
+	int i, ret;
+
+	BUG_ON(!dev);
+	BUG_ON(!data);
+
+	ret = smsc95xx_eeprom_confirm_not_busy(dev);
+	if (ret)
+		return ret;
+
+	/* Issue write/erase enable command */
+	val = E2P_CMD_BUSY_ | E2P_CMD_EWEN_;
+	ret = smsc95xx_write_reg(dev, E2P_CMD, val);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Error writing E2P_DATA\n");
+		return ret;
+	}
+
+	ret = smsc95xx_wait_eeprom(dev);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < length; i++) {
+
+		/* Fill data register */
+		val = data[i];
+		ret = smsc95xx_write_reg(dev, E2P_DATA, val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error writing E2P_DATA\n");
+			return ret;
+		}
+
+		/* Send "write" command */
+		val = E2P_CMD_BUSY_ | E2P_CMD_WRITE_ | (offset & E2P_CMD_ADDR_);
+		ret = smsc95xx_write_reg(dev, E2P_CMD, val);
+		if (ret < 0) {
+			netdev_warn(dev->net, "Error writing E2P_CMD\n");
+			return ret;
+		}
+
+		ret = smsc95xx_wait_eeprom(dev);
+		if (ret < 0)
+			return ret;
+
+		offset++;
+	}
+
+	return 0;
+}
+
+static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
+						 u32 data)
+{
+	const u16 size = 4;
+	u32 buf;
+	int ret;
+
+	buf = data;
+	cpu_to_le32s(&buf);
+
+	ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
+				     USB_DIR_OUT | USB_TYPE_VENDOR |
+				     USB_RECIP_DEVICE,
+				     0, index, &buf, size);
+	if (ret < 0)
+		netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
+			    ret);
+	return ret;
+}
+
+/* returns hash bit number for given MAC address
+ * example:
+ * 01 00 5E 00 00 01 -> returns bit number 31 */
+static unsigned int smsc95xx_hash(char addr[ETH_ALEN])
+{
+	return (ether_crc(ETH_ALEN, addr) >> 26) & 0x3f;
+}
+
+static void smsc95xx_set_multicast(struct net_device *netdev)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	unsigned long flags;
+	int ret;
+
+	pdata->hash_hi = 0;
+	pdata->hash_lo = 0;
+
+	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
+
+	if (dev->net->flags & IFF_PROMISC) {
+		netif_dbg(dev, drv, dev->net, "promiscuous mode enabled\n");
+		pdata->mac_cr |= MAC_CR_PRMS_;
+		pdata->mac_cr &= ~(MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+	} else if (dev->net->flags & IFF_ALLMULTI) {
+		netif_dbg(dev, drv, dev->net, "receive all multicast enabled\n");
+		pdata->mac_cr |= MAC_CR_MCPAS_;
+		pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_HPFILT_);
+	} else if (!netdev_mc_empty(dev->net)) {
+		struct netdev_hw_addr *ha;
+
+		pdata->mac_cr |= MAC_CR_HPFILT_;
+		pdata->mac_cr &= ~(MAC_CR_PRMS_ | MAC_CR_MCPAS_);
+
+		netdev_for_each_mc_addr(ha, netdev) {
+			u32 bitnum = smsc95xx_hash(ha->addr);
+			u32 mask = 0x01 << (bitnum & 0x1F);
+			if (bitnum & 0x20)
+				pdata->hash_hi |= mask;
+			else
+				pdata->hash_lo |= mask;
+		}
+
+		netif_dbg(dev, drv, dev->net, "HASHH=0x%08X, HASHL=0x%08X\n",
+				   pdata->hash_hi, pdata->hash_lo);
+	} else {
+		netif_dbg(dev, drv, dev->net, "receive own packets only\n");
+		pdata->mac_cr &=
+			~(MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+	}
+
+	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
+
+	/* Initiate async writes, as we can't wait for completion here */
+	ret = smsc95xx_write_reg_async(dev, HASHH, pdata->hash_hi);
+	if (ret < 0)
+		netdev_warn(dev->net, "failed to initiate async write to HASHH\n");
+
+	ret = smsc95xx_write_reg_async(dev, HASHL, pdata->hash_lo);
+	if (ret < 0)
+		netdev_warn(dev->net, "failed to initiate async write to HASHL\n");
+
+	ret = smsc95xx_write_reg_async(dev, MAC_CR, pdata->mac_cr);
+	if (ret < 0)
+		netdev_warn(dev->net, "failed to initiate async write to MAC_CR\n");
+}
+
+static int smsc95xx_phy_update_flowcontrol(struct usbnet *dev)
+{
+	u32 flow = 0, afc_cfg;
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	bool tx_pause, rx_pause;
+
+	int ret = smsc95xx_read_reg(dev, AFC_CFG, &afc_cfg);
+	if (ret < 0)
+		return ret;
+
+	if (pdata->phydev->duplex == DUPLEX_FULL) {
+		phy_get_pause(pdata->phydev, &tx_pause, &rx_pause);
+
+		if (rx_pause)
+			flow = 0xFFFF0002;
+
+		if (tx_pause) {
+			afc_cfg |= 0xF;
+			flow |= 0xFFFF0000;
+		} else {
+			afc_cfg &= ~0xF;
+		}
+
+		netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s\n",
+			  rx_pause ? "enabled" : "disabled",
+			  tx_pause ? "enabled" : "disabled");
+	} else {
+		netif_dbg(dev, link, dev->net, "half duplex\n");
+		afc_cfg |= 0xF;
+	}
+
+	ret = smsc95xx_write_reg(dev, FLOW, flow);
+	if (ret < 0)
+		return ret;
+
+	return smsc95xx_write_reg(dev, AFC_CFG, afc_cfg);
+}
+
+static void smsc95xx_mac_update_fullduplex(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	unsigned long flags;
+	int ret;
+
+	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
+	if (pdata->phydev->duplex != DUPLEX_FULL) {
+		pdata->mac_cr &= ~MAC_CR_FDPX_;
+		pdata->mac_cr |= MAC_CR_RCVOWN_;
+	} else {
+		pdata->mac_cr &= ~MAC_CR_RCVOWN_;
+		pdata->mac_cr |= MAC_CR_FDPX_;
+	}
+	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
+
+	ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
+	if (ret < 0) {
+		if (ret != -ENODEV)
+			netdev_warn(dev->net,
+				    "Error updating MAC full duplex mode\n");
+		return;
+	}
+
+	ret = smsc95xx_phy_update_flowcontrol(dev);
+	if (ret < 0)
+		netdev_warn(dev->net, "Error updating PHY flow control\n");
+}
+
+static void smsc95xx_status(struct usbnet *dev, struct urb *urb)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	unsigned long flags;
+	u32 intdata;
+
+	if (urb->actual_length != 4) {
+		netdev_warn(dev->net, "unexpected urb length %d\n",
+			    urb->actual_length);
+		return;
+	}
+
+	intdata = get_unaligned_le32(urb->transfer_buffer);
+	netif_dbg(dev, link, dev->net, "intdata: 0x%08X\n", intdata);
+
+	local_irq_save(flags);
+
+	if (intdata & INT_ENP_PHY_INT_)
+		generic_handle_domain_irq(pdata->irqdomain, PHY_HWIRQ);
+	else
+		netdev_warn(dev->net, "unexpected interrupt, intdata=0x%08X\n",
+			    intdata);
+
+	local_irq_restore(flags);
+}
+
+/* Enable or disable Tx & Rx checksum offload engines */
+static int smsc95xx_set_features(struct net_device *netdev,
+	netdev_features_t features)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u32 read_buf;
+	int ret;
+
+	ret = smsc95xx_read_reg(dev, COE_CR, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	if (features & NETIF_F_IP_CSUM)
+		read_buf |= Tx_COE_EN_;
+	else
+		read_buf &= ~Tx_COE_EN_;
+
+	if (features & NETIF_F_RXCSUM)
+		read_buf |= Rx_COE_EN_;
+	else
+		read_buf &= ~Rx_COE_EN_;
+
+	ret = smsc95xx_write_reg(dev, COE_CR, read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, hw, dev->net, "COE_CR = 0x%08x\n", read_buf);
+	return 0;
+}
+
+static int smsc95xx_ethtool_get_eeprom_len(struct net_device *net)
+{
+	return MAX_EEPROM_SIZE;
+}
+
+static int smsc95xx_ethtool_get_eeprom(struct net_device *netdev,
+				       struct ethtool_eeprom *ee, u8 *data)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+
+	ee->magic = LAN95XX_EEPROM_MAGIC;
+
+	return smsc95xx_read_eeprom(dev, ee->offset, ee->len, data);
+}
+
+static int smsc95xx_ethtool_set_eeprom(struct net_device *netdev,
+				       struct ethtool_eeprom *ee, u8 *data)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+
+	if (ee->magic != LAN95XX_EEPROM_MAGIC) {
+		netdev_warn(dev->net, "EEPROM: magic value mismatch, magic = 0x%x\n",
+			    ee->magic);
+		return -EINVAL;
+	}
+
+	return smsc95xx_write_eeprom(dev, ee->offset, ee->len, data);
+}
+
+static int smsc95xx_ethtool_getregslen(struct net_device *netdev)
+{
+	/* all smsc95xx registers */
+	return COE_CR - ID_REV + sizeof(u32);
+}
+
+static void
+smsc95xx_ethtool_getregs(struct net_device *netdev, struct ethtool_regs *regs,
+			 void *buf)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	unsigned int i, j;
+	int retval;
+	u32 *data = buf;
+
+	retval = smsc95xx_read_reg(dev, ID_REV, &regs->version);
+	if (retval < 0) {
+		netdev_warn(netdev, "REGS: cannot read ID_REV\n");
+		return;
+	}
+
+	for (i = ID_REV, j = 0; i <= COE_CR; i += (sizeof(u32)), j++) {
+		retval = smsc95xx_read_reg(dev, i, &data[j]);
+		if (retval < 0) {
+			netdev_warn(netdev, "REGS: cannot read reg[%x]\n", i);
+			return;
+		}
+	}
+}
+
+static void smsc95xx_ethtool_get_wol(struct net_device *net,
+				     struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+
+	wolinfo->supported = SUPPORTED_WAKE;
+	wolinfo->wolopts = pdata->wolopts;
+}
+
+static int smsc95xx_ethtool_set_wol(struct net_device *net,
+				    struct ethtool_wolinfo *wolinfo)
+{
+	struct usbnet *dev = netdev_priv(net);
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	int ret;
+
+	if (wolinfo->wolopts & ~SUPPORTED_WAKE)
+		return -EINVAL;
+
+	pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
+
+	ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
+	if (ret < 0)
+		netdev_warn(dev->net, "device_set_wakeup_enable error %d\n", ret);
+
+	return ret;
+}
+
+static u32 smsc95xx_get_link(struct net_device *net)
+{
+	phy_read_status(net->phydev);
+	return net->phydev->link;
+}
+
+static void smsc95xx_ethtool_get_strings(struct net_device *netdev, u32 sset,
+					u8 *data)
+{
+	switch (sset) {
+	case ETH_SS_TEST:
+		net_selftest_get_strings(data);
+		break;
+	}
+}
+
+static int smsc95xx_ethtool_get_sset_count(struct net_device *ndev, int sset)
+{
+	switch (sset) {
+	case ETH_SS_TEST:
+		return net_selftest_get_count();
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static const struct ethtool_ops smsc95xx_ethtool_ops = {
+	.get_link	= smsc95xx_get_link,
+	.nway_reset	= phy_ethtool_nway_reset,
+	.get_drvinfo	= usbnet_get_drvinfo,
+	.get_msglevel	= usbnet_get_msglevel,
+	.set_msglevel	= usbnet_set_msglevel,
+	.get_eeprom_len	= smsc95xx_ethtool_get_eeprom_len,
+	.get_eeprom	= smsc95xx_ethtool_get_eeprom,
+	.set_eeprom	= smsc95xx_ethtool_set_eeprom,
+	.get_regs_len	= smsc95xx_ethtool_getregslen,
+	.get_regs	= smsc95xx_ethtool_getregs,
+	.get_wol	= smsc95xx_ethtool_get_wol,
+	.set_wol	= smsc95xx_ethtool_set_wol,
+	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
+	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+	.get_ts_info	= ethtool_op_get_ts_info,
+	.self_test	= net_selftest,
+	.get_strings	= smsc95xx_ethtool_get_strings,
+	.get_sset_count	= smsc95xx_ethtool_get_sset_count,
+};
+
+static int smsc95xx_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
+{
+	if (!netif_running(netdev))
+		return -EINVAL;
+
+	return phy_mii_ioctl(netdev->phydev, rq, cmd);
+}
+
+static void smsc95xx_init_mac_address(struct usbnet *dev)
+{
+	u8 addr[ETH_ALEN];
+
+	/* maybe the boot loader passed the MAC address in devicetree */
+	if (!platform_get_ethdev_address(&dev->udev->dev, dev->net)) {
+		if (is_valid_ether_addr(dev->net->dev_addr)) {
+			/* device tree values are valid so use them */
+			netif_dbg(dev, ifup, dev->net, "MAC address read from the device tree\n");
+			return;
+		}
+	}
+
+	/* try reading mac address from EEPROM */
+	if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN, addr) == 0) {
+		eth_hw_addr_set(dev->net, addr);
+		if (is_valid_ether_addr(dev->net->dev_addr)) {
+			/* eeprom values are valid so use them */
+			netif_dbg(dev, ifup, dev->net, "MAC address read from EEPROM\n");
+			return;
+		}
+	}
+
+	/* no useful static MAC address found. generate a random one */
+	eth_hw_addr_random(dev->net);
+	netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
+}
+
+static int smsc95xx_set_mac_address(struct usbnet *dev)
+{
+	u32 addr_lo = dev->net->dev_addr[0] | dev->net->dev_addr[1] << 8 |
+		dev->net->dev_addr[2] << 16 | dev->net->dev_addr[3] << 24;
+	u32 addr_hi = dev->net->dev_addr[4] | dev->net->dev_addr[5] << 8;
+	int ret;
+
+	ret = smsc95xx_write_reg(dev, ADDRL, addr_lo);
+	if (ret < 0)
+		return ret;
+
+	return smsc95xx_write_reg(dev, ADDRH, addr_hi);
+}
+
+/* starts the TX path */
+static int smsc95xx_start_tx_path(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	unsigned long flags;
+	int ret;
+
+	/* Enable Tx at MAC */
+	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
+	pdata->mac_cr |= MAC_CR_TXEN_;
+	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
+
+	ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
+	if (ret < 0)
+		return ret;
+
+	/* Enable Tx at SCSRs */
+	return smsc95xx_write_reg(dev, TX_CFG, TX_CFG_ON_);
+}
+
+/* Starts the Receive path */
+static int smsc95xx_start_rx_path(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pdata->mac_cr_lock, flags);
+	pdata->mac_cr |= MAC_CR_RXEN_;
+	spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
+
+	return smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
+}
+
+static int smsc95xx_reset(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 read_buf, write_buf, burst_cap;
+	int ret = 0, timeout;
+
+	netif_dbg(dev, ifup, dev->net, "entering smsc95xx_reset\n");
+
+	ret = smsc95xx_write_reg(dev, HW_CFG, HW_CFG_LRST_);
+	if (ret < 0)
+		return ret;
+
+	timeout = 0;
+	do {
+		msleep(10);
+		ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
+		if (ret < 0)
+			return ret;
+		timeout++;
+	} while ((read_buf & HW_CFG_LRST_) && (timeout < 100));
+
+	if (timeout >= 100) {
+		netdev_warn(dev->net, "timeout waiting for completion of Lite Reset\n");
+		return -ETIMEDOUT;
+	}
+
+	ret = smsc95xx_set_mac_address(dev);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net, "MAC Address: %pM\n",
+		  dev->net->dev_addr);
+
+	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG : 0x%08x\n",
+		  read_buf);
+
+	read_buf |= HW_CFG_BIR_;
+
+	ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net,
+		  "Read Value from HW_CFG after writing HW_CFG_BIR_: 0x%08x\n",
+		  read_buf);
+
+	if (!turbo_mode) {
+		burst_cap = 0;
+		dev->rx_urb_size = MAX_SINGLE_PACKET_SIZE;
+	} else if (dev->udev->speed == USB_SPEED_HIGH) {
+		burst_cap = DEFAULT_HS_BURST_CAP_SIZE / HS_USB_PKT_SIZE;
+		dev->rx_urb_size = DEFAULT_HS_BURST_CAP_SIZE;
+	} else {
+		burst_cap = DEFAULT_FS_BURST_CAP_SIZE / FS_USB_PKT_SIZE;
+		dev->rx_urb_size = DEFAULT_FS_BURST_CAP_SIZE;
+	}
+
+	netif_dbg(dev, ifup, dev->net, "rx_urb_size=%ld\n",
+		  (ulong)dev->rx_urb_size);
+
+	ret = smsc95xx_write_reg(dev, BURST_CAP, burst_cap);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_read_reg(dev, BURST_CAP, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net,
+		  "Read Value from BURST_CAP after writing: 0x%08x\n",
+		  read_buf);
+
+	ret = smsc95xx_write_reg(dev, BULK_IN_DLY, DEFAULT_BULK_IN_DELAY);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_read_reg(dev, BULK_IN_DLY, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net,
+		  "Read Value from BULK_IN_DLY after writing: 0x%08x\n",
+		  read_buf);
+
+	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net, "Read Value from HW_CFG: 0x%08x\n",
+		  read_buf);
+
+	if (turbo_mode)
+		read_buf |= (HW_CFG_MEF_ | HW_CFG_BCE_);
+
+	read_buf &= ~HW_CFG_RXDOFF_;
+
+	/* set Rx data offset=2, Make IP header aligns on word boundary. */
+	read_buf |= NET_IP_ALIGN << 9;
+
+	ret = smsc95xx_write_reg(dev, HW_CFG, read_buf);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_read_reg(dev, HW_CFG, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	netif_dbg(dev, ifup, dev->net,
+		  "Read Value from HW_CFG after writing: 0x%08x\n", read_buf);
+
+	ret = smsc95xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL_);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_read_reg(dev, ID_REV, &read_buf);
+	if (ret < 0)
+		return ret;
+	netif_dbg(dev, ifup, dev->net, "ID_REV = 0x%08x\n", read_buf);
+
+	/* Configure GPIO pins as LED outputs */
+	write_buf = LED_GPIO_CFG_SPD_LED | LED_GPIO_CFG_LNK_LED |
+		LED_GPIO_CFG_FDX_LED;
+	ret = smsc95xx_write_reg(dev, LED_GPIO_CFG, write_buf);
+	if (ret < 0)
+		return ret;
+
+	/* Init Tx */
+	ret = smsc95xx_write_reg(dev, FLOW, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_write_reg(dev, AFC_CFG, AFC_CFG_DEFAULT);
+	if (ret < 0)
+		return ret;
+
+	/* Don't need mac_cr_lock during initialisation */
+	ret = smsc95xx_read_reg(dev, MAC_CR, &pdata->mac_cr);
+	if (ret < 0)
+		return ret;
+
+	/* Init Rx */
+	/* Set Vlan */
+	ret = smsc95xx_write_reg(dev, VLAN1, (u32)ETH_P_8021Q);
+	if (ret < 0)
+		return ret;
+
+	/* Enable or disable checksum offload engines */
+	ret = smsc95xx_set_features(dev->net, dev->net->features);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Failed to set checksum offload features\n");
+		return ret;
+	}
+
+	smsc95xx_set_multicast(dev->net);
+
+	ret = smsc95xx_read_reg(dev, INT_EP_CTL, &read_buf);
+	if (ret < 0)
+		return ret;
+
+	/* enable PHY interrupts */
+	read_buf |= INT_EP_CTL_PHY_INT_;
+
+	ret = smsc95xx_write_reg(dev, INT_EP_CTL, read_buf);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_start_tx_path(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Failed to start TX path\n");
+		return ret;
+	}
+
+	ret = smsc95xx_start_rx_path(dev);
+	if (ret < 0) {
+		netdev_warn(dev->net, "Failed to start RX path\n");
+		return ret;
+	}
+
+	netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
+	return 0;
+}
+
+static const struct net_device_ops smsc95xx_netdev_ops = {
+	.ndo_open		= usbnet_open,
+	.ndo_stop		= usbnet_stop,
+	.ndo_start_xmit		= usbnet_start_xmit,
+	.ndo_tx_timeout		= usbnet_tx_timeout,
+	.ndo_change_mtu		= usbnet_change_mtu,
+	.ndo_get_stats64	= dev_get_tstats64,
+	.ndo_set_mac_address 	= eth_mac_addr,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_eth_ioctl		= smsc95xx_ioctl,
+	.ndo_set_rx_mode	= smsc95xx_set_multicast,
+	.ndo_set_features	= smsc95xx_set_features,
+};
+
+static void smsc95xx_handle_link_change(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	phy_print_status(net->phydev);
+	smsc95xx_mac_update_fullduplex(dev);
+	usbnet_defer_kevent(dev, EVENT_LINK_CHANGE);
+}
+
+static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct smsc95xx_priv *pdata;
+	char usb_path[64];
+	int ret, phy_irq;
+	u32 val;
+
+	printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
+
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret < 0) {
+		netdev_warn(dev->net, "usbnet_get_endpoints failed: %d\n", ret);
+		return ret;
+	}
+
+	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return -ENOMEM;
+
+	dev->driver_priv = pdata;
+
+	spin_lock_init(&pdata->mac_cr_lock);
+
+	/* LAN95xx devices do not alter the computed checksum of 0 to 0xffff.
+	 * RFC 2460, ipv6 UDP calculated checksum yields a result of zero must
+	 * be changed to 0xffff. RFC 768, ipv4 UDP computed checksum is zero,
+	 * it is transmitted as all ones. The zero transmitted checksum means
+	 * transmitter generated no checksum. Hence, enable csum offload only
+	 * for ipv4 packets.
+	 */
+	if (DEFAULT_TX_CSUM_ENABLE)
+		dev->net->features |= NETIF_F_IP_CSUM;
+	if (DEFAULT_RX_CSUM_ENABLE)
+		dev->net->features |= NETIF_F_RXCSUM;
+
+	dev->net->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
+	set_bit(EVENT_NO_IP_ALIGN, &dev->flags);
+
+	smsc95xx_init_mac_address(dev);
+
+	/* Init all registers */
+	ret = smsc95xx_reset(dev);
+	if (ret)
+		goto free_pdata;
+
+	/* create irq domain for use by PHY driver and GPIO consumers */
+	usb_make_path(dev->udev, usb_path, sizeof(usb_path));
+	pdata->irqfwnode = irq_domain_alloc_named_fwnode(usb_path);
+	if (!pdata->irqfwnode) {
+		ret = -ENOMEM;
+		goto free_pdata;
+	}
+
+	pdata->irqdomain = irq_domain_create_linear(pdata->irqfwnode,
+						    SMSC95XX_NR_IRQS,
+						    &irq_domain_simple_ops,
+						    pdata);
+	if (!pdata->irqdomain) {
+		ret = -ENOMEM;
+		goto free_irqfwnode;
+	}
+
+	phy_irq = irq_create_mapping(pdata->irqdomain, PHY_HWIRQ);
+	if (!phy_irq) {
+		ret = -ENOENT;
+		goto remove_irqdomain;
+	}
+
+	pdata->irqchip = dummy_irq_chip;
+	pdata->irqchip.name = SMSC_CHIPNAME;
+	irq_set_chip_and_handler_name(phy_irq, &pdata->irqchip,
+				      handle_simple_irq, "phy");
+
+	pdata->mdiobus = mdiobus_alloc();
+	if (!pdata->mdiobus) {
+		ret = -ENOMEM;
+		goto dispose_irq;
+	}
+
+	ret = smsc95xx_read_reg(dev, HW_CFG, &val);
+	if (ret < 0)
+		goto free_mdio;
+
+	pdata->is_internal_phy = !(val & HW_CFG_PSEL_);
+	if (pdata->is_internal_phy)
+		pdata->mdiobus->phy_mask = ~(1u << SMSC95XX_INTERNAL_PHY_ID);
+
+	pdata->mdiobus->priv = dev;
+	pdata->mdiobus->read = smsc95xx_mdiobus_read;
+	pdata->mdiobus->write = smsc95xx_mdiobus_write;
+	pdata->mdiobus->reset = smsc95xx_mdiobus_reset;
+	pdata->mdiobus->name = "smsc95xx-mdiobus";
+	pdata->mdiobus->parent = &dev->udev->dev;
+
+	snprintf(pdata->mdiobus->id, ARRAY_SIZE(pdata->mdiobus->id),
+		 "usb-%03d:%03d", dev->udev->bus->busnum, dev->udev->devnum);
+
+	ret = mdiobus_register(pdata->mdiobus);
+	if (ret) {
+		netdev_err(dev->net, "Could not register MDIO bus\n");
+		goto free_mdio;
+	}
+
+	pdata->phydev = phy_find_first(pdata->mdiobus);
+	if (!pdata->phydev) {
+		netdev_err(dev->net, "no PHY found\n");
+		ret = -ENODEV;
+		goto unregister_mdio;
+	}
+
+	pdata->phydev->irq = phy_irq;
+	pdata->phydev->is_internal = pdata->is_internal_phy;
+
+	/* detect device revision as different features may be available */
+	ret = smsc95xx_read_reg(dev, ID_REV, &val);
+	if (ret < 0)
+		goto unregister_mdio;
+
+	val >>= 16;
+	if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9530_) ||
+	    (val == ID_REV_CHIP_ID_89530_) || (val == ID_REV_CHIP_ID_9730_))
+		pdata->features = (FEATURE_8_WAKEUP_FILTERS |
+			FEATURE_PHY_NLP_CROSSOVER |
+			FEATURE_REMOTE_WAKEUP);
+	else if (val == ID_REV_CHIP_ID_9512_)
+		pdata->features = FEATURE_8_WAKEUP_FILTERS;
+
+	dev->net->netdev_ops = &smsc95xx_netdev_ops;
+	dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
+	dev->net->flags |= IFF_MULTICAST;
+	dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM;
+	dev->net->min_mtu = ETH_MIN_MTU;
+	dev->net->max_mtu = ETH_DATA_LEN;
+	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
+
+	ret = phy_connect_direct(dev->net, pdata->phydev,
+				 &smsc95xx_handle_link_change,
+				 PHY_INTERFACE_MODE_MII);
+	if (ret) {
+		netdev_err(dev->net, "can't attach PHY to %s\n", pdata->mdiobus->id);
+		goto unregister_mdio;
+	}
+
+	phy_attached_info(dev->net->phydev);
+
+	return 0;
+
+unregister_mdio:
+	mdiobus_unregister(pdata->mdiobus);
+
+free_mdio:
+	mdiobus_free(pdata->mdiobus);
+
+dispose_irq:
+	irq_dispose_mapping(phy_irq);
+
+remove_irqdomain:
+	irq_domain_remove(pdata->irqdomain);
+
+free_irqfwnode:
+	irq_domain_free_fwnode(pdata->irqfwnode);
+
+free_pdata:
+	kfree(pdata);
+	return ret;
+}
+
+static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+
+	phy_disconnect(dev->net->phydev);
+	mdiobus_unregister(pdata->mdiobus);
+	mdiobus_free(pdata->mdiobus);
+	irq_dispose_mapping(irq_find_mapping(pdata->irqdomain, PHY_HWIRQ));
+	irq_domain_remove(pdata->irqdomain);
+	irq_domain_free_fwnode(pdata->irqfwnode);
+	netif_dbg(dev, ifdown, dev->net, "free pdata\n");
+	kfree(pdata);
+}
+
+static int smsc95xx_start_phy(struct usbnet *dev)
+{
+	phy_start(dev->net->phydev);
+
+	return 0;
+}
+
+static int smsc95xx_stop(struct usbnet *dev)
+{
+	phy_stop(dev->net->phydev);
+
+	return 0;
+}
+
+static u32 smsc_crc(const u8 *buffer, size_t len, int filter)
+{
+	u32 crc = bitrev16(crc16(0xFFFF, buffer, len));
+	return crc << ((filter % 2) * 16);
+}
+
+static int smsc95xx_link_ok(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	int ret;
+
+	/* first, a dummy read, needed to latch some MII phys */
+	ret = smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, MII_BMSR);
+	if (ret < 0)
+		return ret;
+
+	ret = smsc95xx_mdio_read(dev, pdata->phydev->mdio.addr, MII_BMSR);
+	if (ret < 0)
+		return ret;
+
+	return !!(ret & BMSR_LSTATUS);
+}
+
+static int smsc95xx_enter_suspend0(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 val;
+	int ret;
+
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
+	val |= PM_CTL_SUS_MODE_0;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	/* clear wol status */
+	val &= ~PM_CTL_WUPS_;
+	val |= PM_CTL_WUPS_WOL_;
+
+	/* enable energy detection */
+	if (pdata->wolopts & WAKE_PHY)
+		val |= PM_CTL_WUPS_ED_;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	/* read back PM_CTRL */
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	pdata->suspend_flags |= SUSPEND_SUSPEND0;
+
+	return 0;
+}
+
+static int smsc95xx_enter_suspend1(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	int ret, phy_id = pdata->phydev->mdio.addr;
+	u32 val;
+
+	/* reconfigure link pulse detection timing for
+	 * compatibility with non-standard link partners
+	 */
+	if (pdata->features & FEATURE_PHY_NLP_CROSSOVER)
+		smsc95xx_mdio_write(dev, phy_id, PHY_EDPD_CONFIG,
+				    PHY_EDPD_CONFIG_DEFAULT);
+
+	/* enable energy detect power-down mode */
+	ret = smsc95xx_mdio_read(dev, phy_id, PHY_MODE_CTRL_STS);
+	if (ret < 0)
+		return ret;
+
+	ret |= MODE_CTRL_STS_EDPWRDOWN_;
+
+	smsc95xx_mdio_write(dev, phy_id, PHY_MODE_CTRL_STS, ret);
+
+	/* enter SUSPEND1 mode */
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
+	val |= PM_CTL_SUS_MODE_1;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	/* clear wol status, enable energy detection */
+	val &= ~PM_CTL_WUPS_;
+	val |= (PM_CTL_WUPS_ED_ | PM_CTL_ED_EN_);
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	pdata->suspend_flags |= SUSPEND_SUSPEND1;
+
+	return 0;
+}
+
+static int smsc95xx_enter_suspend2(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 val;
+	int ret;
+
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
+	val |= PM_CTL_SUS_MODE_2;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	pdata->suspend_flags |= SUSPEND_SUSPEND2;
+
+	return 0;
+}
+
+static int smsc95xx_enter_suspend3(struct usbnet *dev)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 val;
+	int ret;
+
+	ret = smsc95xx_read_reg(dev, RX_FIFO_INF, &val);
+	if (ret < 0)
+		return ret;
+
+	if (val & RX_FIFO_INF_USED_) {
+		netdev_info(dev->net, "rx fifo not empty in autosuspend\n");
+		return -EBUSY;
+	}
+
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
+	val |= PM_CTL_SUS_MODE_3 | PM_CTL_RES_CLR_WKP_STS;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	/* clear wol status */
+	val &= ~PM_CTL_WUPS_;
+	val |= PM_CTL_WUPS_WOL_;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		return ret;
+
+	pdata->suspend_flags |= SUSPEND_SUSPEND3;
+
+	return 0;
+}
+
+static int smsc95xx_autosuspend(struct usbnet *dev, u32 link_up)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+
+	if (!netif_running(dev->net)) {
+		/* interface is ifconfig down so fully power down hw */
+		netdev_dbg(dev->net, "autosuspend entering SUSPEND2\n");
+		return smsc95xx_enter_suspend2(dev);
+	}
+
+	if (!link_up) {
+		/* link is down so enter EDPD mode, but only if device can
+		 * reliably resume from it.  This check should be redundant
+		 * as current FEATURE_REMOTE_WAKEUP parts also support
+		 * FEATURE_PHY_NLP_CROSSOVER but it's included for clarity */
+		if (!(pdata->features & FEATURE_PHY_NLP_CROSSOVER)) {
+			netdev_warn(dev->net, "EDPD not supported\n");
+			return -EBUSY;
+		}
+
+		netdev_dbg(dev->net, "autosuspend entering SUSPEND1\n");
+		netdev_info(dev->net, "entering SUSPEND1 mode\n");
+		return smsc95xx_enter_suspend1(dev);
+	}
+
+	netdev_dbg(dev->net, "autosuspend entering SUSPEND3\n");
+	return smsc95xx_enter_suspend3(dev);
+}
+
+static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	u32 val, link_up;
+	int ret;
+
+	pdata->pm_task = current;
+
+	ret = usbnet_suspend(intf, message);
+	if (ret < 0) {
+		netdev_warn(dev->net, "usbnet_suspend error\n");
+		pdata->pm_task = NULL;
+		return ret;
+	}
+
+	if (pdata->suspend_flags) {
+		netdev_warn(dev->net, "error during last resume\n");
+		pdata->suspend_flags = 0;
+	}
+
+	link_up = smsc95xx_link_ok(dev);
+
+	if (message.event == PM_EVENT_AUTO_SUSPEND &&
+	    (pdata->features & FEATURE_REMOTE_WAKEUP)) {
+		ret = smsc95xx_autosuspend(dev, link_up);
+		goto done;
+	}
+
+	/* if we get this far we're not autosuspending */
+	/* if no wol options set, or if link is down and we're not waking on
+	 * PHY activity, enter lowest power SUSPEND2 mode
+	 */
+	if (!(pdata->wolopts & SUPPORTED_WAKE) ||
+		!(link_up || (pdata->wolopts & WAKE_PHY))) {
+		netdev_info(dev->net, "entering SUSPEND2 mode\n");
+
+		/* disable energy detect (link up) & wake up events */
+		ret = smsc95xx_read_reg(dev, WUCSR, &val);
+		if (ret < 0)
+			goto done;
+
+		val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
+
+		ret = smsc95xx_write_reg(dev, WUCSR, val);
+		if (ret < 0)
+			goto done;
+
+		ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+		if (ret < 0)
+			goto done;
+
+		val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
+
+		ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+		if (ret < 0)
+			goto done;
+
+		ret = smsc95xx_enter_suspend2(dev);
+		goto done;
+	}
+
+	if (pdata->wolopts & WAKE_PHY) {
+		/* if link is down then configure EDPD and enter SUSPEND1,
+		 * otherwise enter SUSPEND0 below
+		 */
+		if (!link_up) {
+			netdev_info(dev->net, "entering SUSPEND1 mode\n");
+			ret = smsc95xx_enter_suspend1(dev);
+			goto done;
+		}
+	}
+
+	if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
+		u32 *filter_mask = kcalloc(32, sizeof(u32), GFP_KERNEL);
+		u32 command[2];
+		u32 offset[2];
+		u32 crc[4];
+		int wuff_filter_count =
+			(pdata->features & FEATURE_8_WAKEUP_FILTERS) ?
+			LAN9500A_WUFF_NUM : LAN9500_WUFF_NUM;
+		int i, filter = 0;
+
+		if (!filter_mask) {
+			netdev_warn(dev->net, "Unable to allocate filter_mask\n");
+			ret = -ENOMEM;
+			goto done;
+		}
+
+		memset(command, 0, sizeof(command));
+		memset(offset, 0, sizeof(offset));
+		memset(crc, 0, sizeof(crc));
+
+		if (pdata->wolopts & WAKE_BCAST) {
+			const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+			netdev_info(dev->net, "enabling broadcast detection\n");
+			filter_mask[filter * 4] = 0x003F;
+			filter_mask[filter * 4 + 1] = 0x00;
+			filter_mask[filter * 4 + 2] = 0x00;
+			filter_mask[filter * 4 + 3] = 0x00;
+			command[filter/4] |= 0x05UL << ((filter % 4) * 8);
+			offset[filter/4] |= 0x00 << ((filter % 4) * 8);
+			crc[filter/2] |= smsc_crc(bcast, 6, filter);
+			filter++;
+		}
+
+		if (pdata->wolopts & WAKE_MCAST) {
+			const u8 mcast[] = {0x01, 0x00, 0x5E};
+			netdev_info(dev->net, "enabling multicast detection\n");
+			filter_mask[filter * 4] = 0x0007;
+			filter_mask[filter * 4 + 1] = 0x00;
+			filter_mask[filter * 4 + 2] = 0x00;
+			filter_mask[filter * 4 + 3] = 0x00;
+			command[filter/4] |= 0x09UL << ((filter % 4) * 8);
+			offset[filter/4] |= 0x00  << ((filter % 4) * 8);
+			crc[filter/2] |= smsc_crc(mcast, 3, filter);
+			filter++;
+		}
+
+		if (pdata->wolopts & WAKE_ARP) {
+			const u8 arp[] = {0x08, 0x06};
+			netdev_info(dev->net, "enabling ARP detection\n");
+			filter_mask[filter * 4] = 0x0003;
+			filter_mask[filter * 4 + 1] = 0x00;
+			filter_mask[filter * 4 + 2] = 0x00;
+			filter_mask[filter * 4 + 3] = 0x00;
+			command[filter/4] |= 0x05UL << ((filter % 4) * 8);
+			offset[filter/4] |= 0x0C << ((filter % 4) * 8);
+			crc[filter/2] |= smsc_crc(arp, 2, filter);
+			filter++;
+		}
+
+		if (pdata->wolopts & WAKE_UCAST) {
+			netdev_info(dev->net, "enabling unicast detection\n");
+			filter_mask[filter * 4] = 0x003F;
+			filter_mask[filter * 4 + 1] = 0x00;
+			filter_mask[filter * 4 + 2] = 0x00;
+			filter_mask[filter * 4 + 3] = 0x00;
+			command[filter/4] |= 0x01UL << ((filter % 4) * 8);
+			offset[filter/4] |= 0x00 << ((filter % 4) * 8);
+			crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
+			filter++;
+		}
+
+		for (i = 0; i < (wuff_filter_count * 4); i++) {
+			ret = smsc95xx_write_reg(dev, WUFF, filter_mask[i]);
+			if (ret < 0) {
+				kfree(filter_mask);
+				goto done;
+			}
+		}
+		kfree(filter_mask);
+
+		for (i = 0; i < (wuff_filter_count / 4); i++) {
+			ret = smsc95xx_write_reg(dev, WUFF, command[i]);
+			if (ret < 0)
+				goto done;
+		}
+
+		for (i = 0; i < (wuff_filter_count / 4); i++) {
+			ret = smsc95xx_write_reg(dev, WUFF, offset[i]);
+			if (ret < 0)
+				goto done;
+		}
+
+		for (i = 0; i < (wuff_filter_count / 2); i++) {
+			ret = smsc95xx_write_reg(dev, WUFF, crc[i]);
+			if (ret < 0)
+				goto done;
+		}
+
+		/* clear any pending pattern match packet status */
+		ret = smsc95xx_read_reg(dev, WUCSR, &val);
+		if (ret < 0)
+			goto done;
+
+		val |= WUCSR_WUFR_;
+
+		ret = smsc95xx_write_reg(dev, WUCSR, val);
+		if (ret < 0)
+			goto done;
+	}
+
+	if (pdata->wolopts & WAKE_MAGIC) {
+		/* clear any pending magic packet status */
+		ret = smsc95xx_read_reg(dev, WUCSR, &val);
+		if (ret < 0)
+			goto done;
+
+		val |= WUCSR_MPR_;
+
+		ret = smsc95xx_write_reg(dev, WUCSR, val);
+		if (ret < 0)
+			goto done;
+	}
+
+	/* enable/disable wakeup sources */
+	ret = smsc95xx_read_reg(dev, WUCSR, &val);
+	if (ret < 0)
+		goto done;
+
+	if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
+		netdev_info(dev->net, "enabling pattern match wakeup\n");
+		val |= WUCSR_WAKE_EN_;
+	} else {
+		netdev_info(dev->net, "disabling pattern match wakeup\n");
+		val &= ~WUCSR_WAKE_EN_;
+	}
+
+	if (pdata->wolopts & WAKE_MAGIC) {
+		netdev_info(dev->net, "enabling magic packet wakeup\n");
+		val |= WUCSR_MPEN_;
+	} else {
+		netdev_info(dev->net, "disabling magic packet wakeup\n");
+		val &= ~WUCSR_MPEN_;
+	}
+
+	ret = smsc95xx_write_reg(dev, WUCSR, val);
+	if (ret < 0)
+		goto done;
+
+	/* enable wol wakeup source */
+	ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+	if (ret < 0)
+		goto done;
+
+	val |= PM_CTL_WOL_EN_;
+
+	/* phy energy detect wakeup source */
+	if (pdata->wolopts & WAKE_PHY)
+		val |= PM_CTL_ED_EN_;
+
+	ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+	if (ret < 0)
+		goto done;
+
+	/* enable receiver to enable frame reception */
+	smsc95xx_start_rx_path(dev);
+
+	/* some wol options are enabled, so enter SUSPEND0 */
+	netdev_info(dev->net, "entering SUSPEND0 mode\n");
+	ret = smsc95xx_enter_suspend0(dev);
+
+done:
+	/*
+	 * TODO: resume() might need to handle the suspend failure
+	 * in system sleep
+	 */
+	if (ret && PMSG_IS_AUTO(message))
+		usbnet_resume(intf);
+
+	pdata->pm_task = NULL;
+	return ret;
+}
+
+static int smsc95xx_resume(struct usb_interface *intf)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	struct smsc95xx_priv *pdata;
+	u8 suspend_flags;
+	int ret;
+	u32 val;
+
+	BUG_ON(!dev);
+	pdata = dev->driver_priv;
+	suspend_flags = pdata->suspend_flags;
+
+	netdev_dbg(dev->net, "resume suspend_flags=0x%02x\n", suspend_flags);
+
+	/* do this first to ensure it's cleared even in error case */
+	pdata->suspend_flags = 0;
+
+	pdata->pm_task = current;
+
+	if (suspend_flags & SUSPEND_ALLMODES) {
+		/* clear wake-up sources */
+		ret = smsc95xx_read_reg(dev, WUCSR, &val);
+		if (ret < 0)
+			goto done;
+
+		val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
+
+		ret = smsc95xx_write_reg(dev, WUCSR, val);
+		if (ret < 0)
+			goto done;
+
+		/* clear wake-up status */
+		ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+		if (ret < 0)
+			goto done;
+
+		val &= ~PM_CTL_WOL_EN_;
+		val |= PM_CTL_WUPS_;
+
+		ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+		if (ret < 0)
+			goto done;
+	}
+
+	phy_init_hw(pdata->phydev);
+
+	ret = usbnet_resume(intf);
+	if (ret < 0)
+		netdev_warn(dev->net, "usbnet_resume error\n");
+
+done:
+	pdata->pm_task = NULL;
+	return ret;
+}
+
+static int smsc95xx_reset_resume(struct usb_interface *intf)
+{
+	struct usbnet *dev = usb_get_intfdata(intf);
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+	int ret;
+
+	pdata->pm_task = current;
+	ret = smsc95xx_reset(dev);
+	pdata->pm_task = NULL;
+	if (ret < 0)
+		return ret;
+
+	return smsc95xx_resume(intf);
+}
+
+static void smsc95xx_rx_csum_offload(struct sk_buff *skb)
+{
+	skb->csum = *(u16 *)(skb_tail_pointer(skb) - 2);
+	skb->ip_summed = CHECKSUM_COMPLETE;
+	skb_trim(skb, skb->len - 2);
+}
+
+static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	/* This check is no longer done by usbnet */
+	if (skb->len < dev->net->hard_header_len)
+		return 0;
+
+	while (skb->len > 0) {
+		u32 header, align_count;
+		struct sk_buff *ax_skb;
+		unsigned char *packet;
+		u16 size;
+
+		header = get_unaligned_le32(skb->data);
+		skb_pull(skb, 4 + NET_IP_ALIGN);
+		packet = skb->data;
+
+		/* get the packet length */
+		size = (u16)((header & RX_STS_FL_) >> 16);
+		align_count = (4 - ((size + NET_IP_ALIGN) % 4)) % 4;
+
+		if (unlikely(size > skb->len)) {
+			netif_dbg(dev, rx_err, dev->net,
+				  "size err header=0x%08x\n", header);
+			return 0;
+		}
+
+		if (unlikely(header & RX_STS_ES_)) {
+			netif_dbg(dev, rx_err, dev->net,
+				  "Error header=0x%08x\n", header);
+			dev->net->stats.rx_errors++;
+			dev->net->stats.rx_dropped++;
+
+			if (header & RX_STS_CRC_) {
+				dev->net->stats.rx_crc_errors++;
+			} else {
+				if (header & (RX_STS_TL_ | RX_STS_RF_))
+					dev->net->stats.rx_frame_errors++;
+
+				if ((header & RX_STS_LE_) &&
+					(!(header & RX_STS_FT_)))
+					dev->net->stats.rx_length_errors++;
+			}
+		} else {
+			/* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */
+			if (unlikely(size > (ETH_FRAME_LEN + 12))) {
+				netif_dbg(dev, rx_err, dev->net,
+					  "size err header=0x%08x\n", header);
+				return 0;
+			}
+
+			/* last frame in this batch */
+			if (skb->len == size) {
+				if (dev->net->features & NETIF_F_RXCSUM)
+					smsc95xx_rx_csum_offload(skb);
+				skb_trim(skb, skb->len - 4); /* remove fcs */
+				skb->truesize = size + sizeof(struct sk_buff);
+
+				return 1;
+			}
+
+			ax_skb = skb_clone(skb, GFP_ATOMIC);
+			if (unlikely(!ax_skb)) {
+				netdev_warn(dev->net, "Error allocating skb\n");
+				return 0;
+			}
+
+			ax_skb->len = size;
+			ax_skb->data = packet;
+			skb_set_tail_pointer(ax_skb, size);
+
+			if (dev->net->features & NETIF_F_RXCSUM)
+				smsc95xx_rx_csum_offload(ax_skb);
+			skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
+			ax_skb->truesize = size + sizeof(struct sk_buff);
+
+			usbnet_skb_return(dev, ax_skb);
+		}
+
+		skb_pull(skb, size);
+
+		/* padding bytes before the next frame starts */
+		if (skb->len)
+			skb_pull(skb, align_count);
+	}
+
+	return 1;
+}
+
+static u32 smsc95xx_calc_csum_preamble(struct sk_buff *skb)
+{
+	u16 low_16 = (u16)skb_checksum_start_offset(skb);
+	u16 high_16 = low_16 + skb->csum_offset;
+	return (high_16 << 16) | low_16;
+}
+
+/* The TX CSUM won't work if the checksum lies in the last 4 bytes of the
+ * transmission. This is fairly unlikely, only seems to trigger with some
+ * short TCP ACK packets sent.
+ *
+ * Note, this calculation should probably check for the alignment of the
+ * data as well, but a straight check for csum being in the last four bytes
+ * of the packet should be ok for now.
+ */
+static bool smsc95xx_can_tx_checksum(struct sk_buff *skb)
+{
+       unsigned int len = skb->len - skb_checksum_start_offset(skb);
+
+       if (skb->len <= 45)
+	       return false;
+       return skb->csum_offset < (len - (4 + 1));
+}
+
+static struct sk_buff *smsc95xx_tx_fixup(struct usbnet *dev,
+					 struct sk_buff *skb, gfp_t flags)
+{
+	bool csum = skb->ip_summed == CHECKSUM_PARTIAL;
+	int overhead = csum ? SMSC95XX_TX_OVERHEAD_CSUM : SMSC95XX_TX_OVERHEAD;
+	u32 tx_cmd_a, tx_cmd_b;
+	void *ptr;
+
+	/* We do not advertise SG, so skbs should be already linearized */
+	BUG_ON(skb_shinfo(skb)->nr_frags);
+
+	/* Make writable and expand header space by overhead if required */
+	if (skb_cow_head(skb, overhead)) {
+		/* Must deallocate here as returning NULL to indicate error
+		 * means the skb won't be deallocated in the caller.
+		 */
+		dev_kfree_skb_any(skb);
+		return NULL;
+	}
+
+	tx_cmd_b = (u32)skb->len;
+	tx_cmd_a = tx_cmd_b | TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+
+	if (csum) {
+		if (!smsc95xx_can_tx_checksum(skb)) {
+			/* workaround - hardware tx checksum does not work
+			 * properly with extremely small packets */
+			long csstart = skb_checksum_start_offset(skb);
+			__wsum calc = csum_partial(skb->data + csstart,
+				skb->len - csstart, 0);
+			*((__sum16 *)(skb->data + csstart
+				+ skb->csum_offset)) = csum_fold(calc);
+
+			csum = false;
+		} else {
+			u32 csum_preamble = smsc95xx_calc_csum_preamble(skb);
+			ptr = skb_push(skb, 4);
+			put_unaligned_le32(csum_preamble, ptr);
+
+			tx_cmd_a += 4;
+			tx_cmd_b += 4;
+			tx_cmd_b |= TX_CMD_B_CSUM_ENABLE;
+		}
+	}
+
+	ptr = skb_push(skb, 8);
+	put_unaligned_le32(tx_cmd_a, ptr);
+	put_unaligned_le32(tx_cmd_b, ptr+4);
+
+	return skb;
+}
+
+static int smsc95xx_manage_power(struct usbnet *dev, int on)
+{
+	struct smsc95xx_priv *pdata = dev->driver_priv;
+
+	dev->intf->needs_remote_wakeup = on;
+
+	if (pdata->features & FEATURE_REMOTE_WAKEUP)
+		return 0;
+
+	/* this chip revision isn't capable of remote wakeup */
+	netdev_info(dev->net, "hardware isn't capable of remote wakeup\n");
+
+	if (on)
+		usb_autopm_get_interface_no_resume(dev->intf);
+	else
+		usb_autopm_put_interface(dev->intf);
+
+	return 0;
+}
+
+static const struct driver_info smsc95xx_info = {
+	.description	= "smsc95xx USB 2.0 Ethernet",
+	.bind		= smsc95xx_bind,
+	.unbind		= smsc95xx_unbind,
+	.reset		= smsc95xx_reset,
+	.check_connect	= smsc95xx_start_phy,
+	.stop		= smsc95xx_stop,
+	.rx_fixup	= smsc95xx_rx_fixup,
+	.tx_fixup	= smsc95xx_tx_fixup,
+	.status		= smsc95xx_status,
+	.manage_power	= smsc95xx_manage_power,
+	.flags		= FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR,
+};
+
+static const struct usb_device_id products[] = {
+	{
+		/* SMSC9500 USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9500),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9505 USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9505),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500A USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9E00),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9505A USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9E01),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9512/9514 USB Hub & Ethernet Device */
+		USB_DEVICE(0x0424, 0xec00),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500 USB Ethernet Device (SAL10) */
+		USB_DEVICE(0x0424, 0x9900),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9505 USB Ethernet Device (SAL10) */
+		USB_DEVICE(0x0424, 0x9901),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500A USB Ethernet Device (SAL10) */
+		USB_DEVICE(0x0424, 0x9902),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9505A USB Ethernet Device (SAL10) */
+		USB_DEVICE(0x0424, 0x9903),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9512/9514 USB Hub & Ethernet Device (SAL10) */
+		USB_DEVICE(0x0424, 0x9904),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500A USB Ethernet Device (HAL) */
+		USB_DEVICE(0x0424, 0x9905),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9505A USB Ethernet Device (HAL) */
+		USB_DEVICE(0x0424, 0x9906),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500 USB Ethernet Device (Alternate ID) */
+		USB_DEVICE(0x0424, 0x9907),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9500A USB Ethernet Device (Alternate ID) */
+		USB_DEVICE(0x0424, 0x9908),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC9512/9514 USB Hub & Ethernet Device (Alternate ID) */
+		USB_DEVICE(0x0424, 0x9909),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC LAN9530 USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9530),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC LAN9730 USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9730),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* SMSC LAN89530 USB Ethernet Device */
+		USB_DEVICE(0x0424, 0x9E08),
+		.driver_info = (unsigned long) &smsc95xx_info,
+	},
+	{
+		/* Microchip's EVB-LAN8670-USB 10BASE-T1S Ethernet Device */
+		USB_DEVICE(0x184F, 0x0051),
+		.driver_info = (unsigned long)&smsc95xx_info,
+	},
+	{ },		/* END */
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver smsc95xx_driver = {
+	.name		= "smsc95xx",
+	.id_table	= products,
+	.probe		= usbnet_probe,
+	.suspend	= smsc95xx_suspend,
+	.resume		= smsc95xx_resume,
+	.reset_resume	= smsc95xx_reset_resume,
+	.disconnect	= usbnet_disconnect,
+	.disable_hub_initiated_lpm = 1,
+	.supports_autosuspend = 1,
+};
+
+module_usb_driver(smsc95xx_driver);
+
+MODULE_AUTHOR("Nancy Lin");
+MODULE_AUTHOR("Steve Glendinning <steve.glendinning@shawell.net>");
+MODULE_DESCRIPTION("SMSC95XX USB 2.0 Ethernet Devices");
+MODULE_LICENSE("GPL");