Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	drivers/net/e100.c
	drivers/net/e1000e/netdev.c

20 files changed, 762 insertions, 104 deletions

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index ebf80b983063..0a0512ae77da 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -273,6 +273,7 @@ obj-$(CONFIG_USB_RTL8150)       += usb/
 obj-$(CONFIG_USB_HSO)           += usb/
 obj-$(CONFIG_USB_USBNET)        += usb/
 obj-$(CONFIG_USB_ZD1201)        += usb/
+obj-$(CONFIG_USB_IPHETH)        += usb/
 
 obj-y += wireless/
 obj-$(CONFIG_NET_TULIP) += tulip/
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 33451092b8e8..d800b598ae3d 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -1006,7 +1006,7 @@ static int ems_usb_probe(struct usb_interface *intf,
 
         netdev = alloc_candev(sizeof(struct ems_usb), MAX_TX_URBS);
         if (!netdev) {
-                dev_err(netdev->dev.parent, "Couldn't alloc candev\n");
+                dev_err(&intf->dev, "ems_usb: Couldn't alloc candev\n");
                 return -ENOMEM;
         }
 
@@ -1036,20 +1036,20 @@ static int ems_usb_probe(struct usb_interface *intf,
 
         dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!dev->intr_urb) {
-                dev_err(netdev->dev.parent, "Couldn't alloc intr URB\n");
+                dev_err(&intf->dev, "Couldn't alloc intr URB\n");
                 goto cleanup_candev;
         }
 
         dev->intr_in_buffer = kzalloc(INTR_IN_BUFFER_SIZE, GFP_KERNEL);
         if (!dev->intr_in_buffer) {
-                dev_err(netdev->dev.parent, "Couldn't alloc Intr buffer\n");
+                dev_err(&intf->dev, "Couldn't alloc Intr buffer\n");
                 goto cleanup_intr_urb;
         }
 
         dev->tx_msg_buffer = kzalloc(CPC_HEADER_SIZE +
                                      sizeof(struct ems_cpc_msg), GFP_KERNEL);
         if (!dev->tx_msg_buffer) {
-                dev_err(netdev->dev.parent, "Couldn't alloc Tx buffer\n");
+                dev_err(&intf->dev, "Couldn't alloc Tx buffer\n");
                 goto cleanup_intr_in_buffer;
         }
 
diff --git a/drivers/net/cxgb3/ael1002.c b/drivers/net/cxgb3/ael1002.c
index 5248f9e0b2f4..35cd36729155 100644
--- a/drivers/net/cxgb3/ael1002.c
+++ b/drivers/net/cxgb3/ael1002.c
@@ -934,7 +934,7 @@ static struct cphy_ops xaui_direct_ops = {
 int t3_xaui_direct_phy_prep(struct cphy *phy, struct adapter *adapter,
                             int phy_addr, const struct mdio_ops *mdio_ops)
 {
-        cphy_init(phy, adapter, MDIO_PRTAD_NONE, &xaui_direct_ops, mdio_ops,
+        cphy_init(phy, adapter, phy_addr, &xaui_direct_ops, mdio_ops,
                   SUPPORTED_10000baseT_Full | SUPPORTED_AUI | SUPPORTED_TP,
                   "10GBASE-CX4");
         return 0;
diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index aced6c5e635c..e3f1b8566495 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -439,7 +439,7 @@ static void free_irq_resources(struct adapter *adapter)
 static int await_mgmt_replies(struct adapter *adap, unsigned long init_cnt,
                               unsigned long n)
 {
-        int attempts = 5;
+        int attempts = 10;
 
         while (adap->sge.qs[0].rspq.offload_pkts < init_cnt + n) {
                 if (!--attempts)
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 3e8d0005540f..ef97bfcef9dd 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -168,6 +168,7 @@
 #include <linux/ethtool.h>
 #include <linux/string.h>
 #include <linux/firmware.h>
+#include <linux/rtnetlink.h>
 #include <asm/unaligned.h>
 
 
@@ -2280,8 +2281,13 @@ static void e100_tx_timeout_task(struct work_struct *work)
 
         netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev,
                      "scb.status=0x%02X\n", ioread8(&nic->csr->scb.status));
-        e100_down(netdev_priv(netdev));
-        e100_up(netdev_priv(netdev));
+
+        rtnl_lock();
+        if (netif_running(netdev)) {
+                e100_down(netdev_priv(netdev));
+                e100_up(netdev_priv(netdev));
+        }
+        rtnl_unlock();
 }
 
 static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 4b0016d69530..17a25e19bbba 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -336,7 +336,6 @@ static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)
         struct e1000_hw *hw = &adapter->hw;
         static int global_quad_port_a; /* global port a indication */
         struct pci_dev *pdev = adapter->pdev;
-        u16 eeprom_data = 0;
         int is_port_b = er32(STATUS) & E1000_STATUS_FUNC_1;
         s32 rc;
 
@@ -387,16 +386,15 @@ static s32 e1000_get_variants_82571(struct e1000_adapter *adapter)
                 if (pdev->device == E1000_DEV_ID_82571EB_SERDES_QUAD)
                         adapter->flags &= ~FLAG_HAS_WOL;
                 break;
-
         case e1000_82573:
+        case e1000_82574:
+        case e1000_82583:
+                /* Disable ASPM L0s due to hardware errata */
+                e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L0S);
+
                 if (pdev->device == E1000_DEV_ID_82573L) {
-                        if (e1000_read_nvm(&adapter->hw, NVM_INIT_3GIO_3, 1,
-                                       &eeprom_data) < 0)
-                                break;
-                        if (!(eeprom_data & NVM_WORD1A_ASPM_MASK)) {
-                                adapter->flags |= FLAG_HAS_JUMBO_FRAMES;
-                                adapter->max_hw_frame_size = DEFAULT_JUMBO;
-                        }
+                        adapter->flags |= FLAG_HAS_JUMBO_FRAMES;
+                        adapter->max_hw_frame_size = DEFAULT_JUMBO;
                 }
                 break;
         default:
@@ -1792,6 +1790,7 @@ struct e1000_info e1000_82571_info = {
                                   | FLAG_RESET_OVERWRITES_LAA /* errata */
                                   | FLAG_TARC_SPEED_MODE_BIT /* errata */
                                   | FLAG_APME_CHECK_PORT_B,
+        .flags2                 = FLAG2_DISABLE_ASPM_L1, /* errata 13 */
         .pba                    = 38,
         .max_hw_frame_size      = DEFAULT_JUMBO,
         .get_variants           = e1000_get_variants_82571,
@@ -1809,6 +1808,7 @@ struct e1000_info e1000_82572_info = {
                                   | FLAG_RX_CSUM_ENABLED
                                   | FLAG_HAS_CTRLEXT_ON_LOAD
                                   | FLAG_TARC_SPEED_MODE_BIT, /* errata */
+        .flags2                 = FLAG2_DISABLE_ASPM_L1, /* errata 13 */
         .pba                    = 38,
         .max_hw_frame_size      = DEFAULT_JUMBO,
         .get_variants           = e1000_get_variants_82571,
@@ -1820,13 +1820,11 @@ struct e1000_info e1000_82572_info = {
 struct e1000_info e1000_82573_info = {
         .mac                    = e1000_82573,
         .flags                  = FLAG_HAS_HW_VLAN_FILTER
-                                  | FLAG_HAS_JUMBO_FRAMES
                                   | FLAG_HAS_WOL
                                   | FLAG_APME_IN_CTRL3
                                   | FLAG_RX_CSUM_ENABLED
                                   | FLAG_HAS_SMART_POWER_DOWN
                                   | FLAG_HAS_AMT
-                                  | FLAG_HAS_ERT
                                   | FLAG_HAS_SWSM_ON_LOAD,
         .pba                    = 20,
         .max_hw_frame_size      = ETH_FRAME_LEN + ETH_FCS_LEN,
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index 12648a1cdb78..906c4daaabe9 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -37,6 +37,7 @@
 #include <linux/io.h>
 #include <linux/netdevice.h>
 #include <linux/pci.h>
+#include <linux/pci-aspm.h>
 
 #include "hw.h"
 
@@ -370,7 +371,7 @@ struct e1000_adapter {
 struct e1000_info {
         enum e1000_mac_type     mac;
         unsigned int            flags;
-        unsigned int            flags2;
+        unsigned int            flags2;
         u32                     pba;
         u32                     max_hw_frame_size;
         s32                     (*get_variants)(struct e1000_adapter *);
@@ -417,6 +418,7 @@ struct e1000_info {
 #define FLAG2_CRC_STRIPPING               (1 << 0)
 #define FLAG2_HAS_PHY_WAKEUP              (1 << 1)
 #define FLAG2_IS_DISCARDING               (1 << 2)
+#define FLAG2_DISABLE_ASPM_L1             (1 << 3)
 
 #define E1000_RX_DESC_PS(R, i)      \
         (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
@@ -457,6 +459,7 @@ extern void e1000e_update_stats(struct e1000_adapter *adapter);
 extern bool e1000e_has_link(struct e1000_adapter *adapter);
 extern void e1000e_set_interrupt_capability(struct e1000_adapter *adapter);
 extern void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter);
+extern void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
 
 extern unsigned int copybreak;
 
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 5f70c437fa41..2476f8c24c54 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -4310,6 +4310,14 @@ static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
                 return -EINVAL;
         }
 
+        /* 82573 Errata 17 */
+        if (((adapter->hw.mac.type == e1000_82573) ||
+             (adapter->hw.mac.type == e1000_82574)) &&
+            (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
+                adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
+                e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
+        }
+
         while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
                 msleep(1);
         /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
@@ -4634,29 +4642,39 @@ static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
         }
 }
 
-static void e1000e_disable_l1aspm(struct pci_dev *pdev)
+#ifdef CONFIG_PCIEASPM
+static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+        pci_disable_link_state(pdev, state);
+}
+#else
+static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
 {
         int pos;
-        u16 val;
+        u16 reg16;
 
         /*
-         * 82573 workaround - disable L1 ASPM on mobile chipsets
-         *
-         * L1 ASPM on various mobile (ich7) chipsets do not behave properly
-         * resulting in lost data or garbage information on the pci-e link
-         * level. This could result in (false) bad EEPROM checksum errors,
-         * long ping times (up to 2s) or even a system freeze/hang.
-         *
-         * Unfortunately this feature saves about 1W power consumption when
-         * active.
+         * Both device and parent should have the same ASPM setting.
+         * Disable ASPM in downstream component first and then upstream.
          */
-        pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
-        pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &val);
-        if (val & 0x2) {
-                dev_warn(&pdev->dev, "Disabling L1 ASPM\n");
-                val &= ~0x2;
-                pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, val);
-        }
+        pos = pci_pcie_cap(pdev);
+        pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
+        reg16 &= ~state;
+        pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
+
+        pos = pci_pcie_cap(pdev->bus->self);
+        pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, &reg16);
+        reg16 &= ~state;
+        pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
+}
+#endif
+void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
+{
+        dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
+                 (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
+                 (state & PCIE_LINK_STATE_L1) ? "L1" : "");
+
+        __e1000e_disable_aspm(pdev, state);
 }
 
 #ifdef CONFIG_PM_OPS
@@ -4672,7 +4690,11 @@ static int __e1000_resume(struct pci_dev *pdev)
         struct e1000_hw *hw = &adapter->hw;
         u32 err;
 
-        e1000e_disable_l1aspm(pdev);
+        pci_set_power_state(pdev, PCI_D0);
+        pci_restore_state(pdev);
+        pci_save_state(pdev);
+        if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+                e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
 
         e1000e_set_interrupt_capability(adapter);
         if (netif_running(netdev)) {
@@ -4877,7 +4899,8 @@ static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
         int err;
         pci_ers_result_t result;
 
-        e1000e_disable_l1aspm(pdev);
+        if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
+                e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
         err = pci_enable_device_mem(pdev);
         if (err) {
                 dev_err(&pdev->dev,
@@ -4971,13 +4994,6 @@ static void e1000_eeprom_checks(struct e1000_adapter *adapter)
                 dev_warn(&adapter->pdev->dev,
                          "Warning: detected DSPD enabled in EEPROM\n");
         }
-
-        ret_val = e1000_read_nvm(hw, NVM_INIT_3GIO_3, 1, &buf);
-        if (!ret_val && (le16_to_cpu(buf) & (3 << 2))) {
-                /* ASPM enable */
-                dev_warn(&adapter->pdev->dev,
-                         "Warning: detected ASPM enabled in EEPROM\n");
-        }
 }
 
 static const struct net_device_ops e1000e_netdev_ops = {
@@ -5026,7 +5042,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
         u16 eeprom_data = 0;
         u16 eeprom_apme_mask = E1000_EEPROM_APME;
 
-        e1000e_disable_l1aspm(pdev);
+        if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
+                e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1);
 
         err = pci_enable_device_mem(pdev);
         if (err)
diff --git a/drivers/net/fsl_pq_mdio.c b/drivers/net/fsl_pq_mdio.c
index d5160edf2fcf..3acac5f930c8 100644
--- a/drivers/net/fsl_pq_mdio.c
+++ b/drivers/net/fsl_pq_mdio.c
@@ -205,8 +205,6 @@ static int fsl_pq_mdio_find_free(struct mii_bus *new_bus)
 static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct device_node *np)
 {
         struct gfar __iomem *enet_regs;
-        u32 __iomem *ioremap_tbipa;
-        u64 addr, size;
 
         /*
          * This is mildly evil, but so is our hardware for doing this.
@@ -220,9 +218,7 @@ static u32 __iomem *get_gfar_tbipa(struct fsl_pq_mdio __iomem *regs, struct devi
                 return &enet_regs->tbipa;
         } else if (of_device_is_compatible(np, "fsl,etsec2-mdio") ||
                         of_device_is_compatible(np, "fsl,etsec2-tbi")) {
-                addr = of_translate_address(np, of_get_address(np, 1, &size, NULL));
-                ioremap_tbipa = ioremap(addr, size);
-                return ioremap_tbipa;
+                return of_iomap(np, 1);
         } else
                 return NULL;
 }
@@ -279,6 +275,7 @@ static int fsl_pq_mdio_probe(struct of_device *ofdev,
         u32 __iomem *tbipa;
         struct mii_bus *new_bus;
         int tbiaddr = -1;
+        const u32 *addrp;
         u64 addr = 0, size = 0;
         int err = 0;
 
@@ -297,8 +294,19 @@ static int fsl_pq_mdio_probe(struct of_device *ofdev,
         new_bus->priv = priv;
         fsl_pq_mdio_bus_name(new_bus->id, np);
 
+        addrp = of_get_address(np, 0, &size, NULL);
+        if (!addrp) {
+                err = -EINVAL;
+                goto err_free_bus;
+        }
+
         /* Set the PHY base address */
-        addr = of_translate_address(np, of_get_address(np, 0, &size, NULL));
+        addr = of_translate_address(np, addrp);
+        if (addr == OF_BAD_ADDR) {
+                err = -EINVAL;
+                goto err_free_bus;
+        }
+
         map = ioremap(addr, size);
         if (!map) {
                 err = -ENOMEM;
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 032073d1e3d2..0cef967499d3 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -558,12 +558,8 @@ static int gfar_parse_group(struct device_node *np,
                 struct gfar_private *priv, const char *model)
 {
         u32 *queue_mask;
-        u64 addr, size;
-
-        addr = of_translate_address(np,
-                        of_get_address(np, 0, &size, NULL));
-        priv->gfargrp[priv->num_grps].regs = ioremap(addr, size);
 
+        priv->gfargrp[priv->num_grps].regs = of_iomap(np, 0);
         if (!priv->gfargrp[priv->num_grps].regs)
                 return -ENOMEM;
 
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index f894bb633040..d189ba7e8f15 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -39,6 +39,8 @@
 #define IXGBE_82599_MC_TBL_SIZE   128
 #define IXGBE_82599_VFT_TBL_SIZE  128
 
+void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
+void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
 void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
 s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
                                           ixgbe_link_speed speed,
@@ -69,8 +71,14 @@ static void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
         if (hw->phy.multispeed_fiber) {
                 /* Set up dual speed SFP+ support */
                 mac->ops.setup_link = &ixgbe_setup_mac_link_multispeed_fiber;
+                mac->ops.disable_tx_laser =
+                                       &ixgbe_disable_tx_laser_multispeed_fiber;
+                mac->ops.enable_tx_laser =
+                                        &ixgbe_enable_tx_laser_multispeed_fiber;
                 mac->ops.flap_tx_laser = &ixgbe_flap_tx_laser_multispeed_fiber;
         } else {
+                mac->ops.disable_tx_laser = NULL;
+                mac->ops.enable_tx_laser = NULL;
                 mac->ops.flap_tx_laser = NULL;
                 if ((mac->ops.get_media_type(hw) ==
                      ixgbe_media_type_backplane) &&
@@ -415,6 +423,44 @@ s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
         return status;
 }
 
+ /**
+  *  ixgbe_disable_tx_laser_multispeed_fiber - Disable Tx laser
+  *  @hw: pointer to hardware structure
+  *
+  *  The base drivers may require better control over SFP+ module
+  *  PHY states.  This includes selectively shutting down the Tx
+  *  laser on the PHY, effectively halting physical link.
+  **/
+void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
+{
+        u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
+
+        /* Disable tx laser; allow 100us to go dark per spec */
+        esdp_reg |= IXGBE_ESDP_SDP3;
+        IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
+        IXGBE_WRITE_FLUSH(hw);
+        udelay(100);
+}
+
+/**
+ *  ixgbe_enable_tx_laser_multispeed_fiber - Enable Tx laser
+ *  @hw: pointer to hardware structure
+ *
+ *  The base drivers may require better control over SFP+ module
+ *  PHY states.  This includes selectively turning on the Tx
+ *  laser on the PHY, effectively starting physical link.
+ **/
+void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
+{
+        u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
+
+        /* Enable tx laser; allow 100ms to light up */
+        esdp_reg &= ~IXGBE_ESDP_SDP3;
+        IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
+        IXGBE_WRITE_FLUSH(hw);
+        msleep(100);
+}
+
 /**
  *  ixgbe_flap_tx_laser_multispeed_fiber - Flap Tx laser
  *  @hw: pointer to hardware structure
@@ -429,23 +475,11 @@ s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
  **/
 void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
 {
-        u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
-
         hw_dbg(hw, "ixgbe_flap_tx_laser_multispeed_fiber\n");
 
         if (hw->mac.autotry_restart) {
-                /* Disable tx laser; allow 100us to go dark per spec */
-                esdp_reg |= IXGBE_ESDP_SDP3;
-                IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
-                IXGBE_WRITE_FLUSH(hw);
-                udelay(100);
-
-                /* Enable tx laser; allow 100ms to light up */
-                esdp_reg &= ~IXGBE_ESDP_SDP3;
-                IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
-                IXGBE_WRITE_FLUSH(hw);
-                msleep(100);
-
+                ixgbe_disable_tx_laser_multispeed_fiber(hw);
+                ixgbe_enable_tx_laser_multispeed_fiber(hw);
                 hw->mac.autotry_restart = false;
         }
 }
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index a98ff0e76e86..32781b3f8964 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2991,6 +2991,10 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
         else
                 ixgbe_configure_msi_and_legacy(adapter);
 
+        /* enable the optics */
+        if (hw->phy.multispeed_fiber)
+                hw->mac.ops.enable_tx_laser(hw);
+
         clear_bit(__IXGBE_DOWN, &adapter->state);
         ixgbe_napi_enable_all(adapter);
 
@@ -3252,6 +3256,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
         /* signal that we are down to the interrupt handler */
         set_bit(__IXGBE_DOWN, &adapter->state);
 
+        /* power down the optics */
+        if (hw->phy.multispeed_fiber)
+                hw->mac.ops.disable_tx_laser(hw);
+
         /* disable receive for all VFs and wait one second */
         if (adapter->num_vfs) {
                 /* ping all the active vfs to let them know we are going down */
@@ -6262,6 +6270,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
                 goto err_eeprom;
         }
 
+        /* power down the optics */
+        if (hw->phy.multispeed_fiber)
+                hw->mac.ops.disable_tx_laser(hw);
+
         init_timer(&adapter->watchdog_timer);
         adapter->watchdog_timer.function = &ixgbe_watchdog;
         adapter->watchdog_timer.data = (unsigned long)adapter;
@@ -6409,16 +6421,6 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev)
         del_timer_sync(&adapter->sfp_timer);
         cancel_work_sync(&adapter->watchdog_task);
         cancel_work_sync(&adapter->sfp_task);
-        if (adapter->hw.phy.multispeed_fiber) {
-                struct ixgbe_hw *hw = &adapter->hw;
-                /*
-                 * Restart clause 37 autoneg, disable and re-enable
-                 * the tx laser, to clear & alert the link partner
-                 * that it needs to restart autotry
-                 */
-                hw->mac.autotry_restart = true;
-                hw->mac.ops.flap_tx_laser(hw);
-        }
         cancel_work_sync(&adapter->multispeed_fiber_task);
         cancel_work_sync(&adapter->sfp_config_module_task);
         if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index aed4ed665648..a0f9084c81cd 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2398,6 +2398,8 @@ struct ixgbe_mac_operations {
         s32 (*enable_rx_dma)(struct ixgbe_hw *, u32);
 
         /* Link */
+        void (*disable_tx_laser)(struct ixgbe_hw *);
+        void (*enable_tx_laser)(struct ixgbe_hw *);
         void (*flap_tx_laser)(struct ixgbe_hw *);
         s32 (*setup_link)(struct ixgbe_hw *, ixgbe_link_speed, bool, bool);
         s32 (*check_link)(struct ixgbe_hw *, ixgbe_link_speed *, bool *, bool);
diff --git a/drivers/net/ks8851.c b/drivers/net/ks8851.c
index 4dcd61f81ec2..b8ed1ee37ac1 100644
--- a/drivers/net/ks8851.c
+++ b/drivers/net/ks8851.c
@@ -717,12 +717,14 @@ static void ks8851_tx_work(struct work_struct *work)
                 txb = skb_dequeue(&ks->txq);
                 last = skb_queue_empty(&ks->txq);
 
-                ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
-                ks8851_wrpkt(ks, txb, last);
-                ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
-                ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
+                if (txb != NULL) {
+                        ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);
+                        ks8851_wrpkt(ks, txb, last);
+                        ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);
+                        ks8851_wrreg16(ks, KS_TXQCR, TXQCR_METFE);
 
-                ks8851_done_tx(ks, txb);
+                        ks8851_done_tx(ks, txb);
+                }
         }
 
         mutex_unlock(&ks->lock);
diff --git a/drivers/net/pcmcia/3c574_cs.c b/drivers/net/pcmcia/3c574_cs.c
index 3d1d3a7b7ed3..757f87bb1db3 100644
--- a/drivers/net/pcmcia/3c574_cs.c
+++ b/drivers/net/pcmcia/3c574_cs.c
@@ -781,8 +781,13 @@ static netdev_tx_t el3_start_xmit(struct sk_buff *skb,
                   inw(ioaddr + EL3_STATUS));
 
         spin_lock_irqsave(&lp->window_lock, flags);
+
+        dev->stats.tx_bytes += skb->len;
+
+        /* Put out the doubleword header... */
         outw(skb->len, ioaddr + TX_FIFO);
         outw(0, ioaddr + TX_FIFO);
+        /* ... and the packet rounded to a doubleword. */
         outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);
 
         dev->trans_start = jiffies;
@@ -1021,8 +1026,6 @@ static void update_stats(struct net_device *dev)
         /* BadSSD */                               inb(ioaddr + 12);
         up                                       = inb(ioaddr + 13);
 
-        dev->stats.tx_bytes                     += tx + ((up & 0xf0) << 12);
-
         EL3WINDOW(1);
 }
 
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 340da3915b96..217e709bda3e 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2775,6 +2775,7 @@ static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
 {
         iounmap(ioaddr);
         pci_release_regions(pdev);
+        pci_clear_mwi(pdev);
         pci_disable_device(pdev);
         free_netdev(dev);
 }
@@ -2841,8 +2842,13 @@ static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
         spin_lock_irq(&tp->lock);
 
         RTL_W8(Cfg9346, Cfg9346_Unlock);
+
         RTL_W32(MAC4, high);
+        RTL_R32(MAC4);
+
         RTL_W32(MAC0, low);
+        RTL_R32(MAC0);
+
         RTL_W8(Cfg9346, Cfg9346_Lock);
 
         spin_unlock_irq(&tp->lock);
@@ -3030,9 +3036,8 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 goto err_out_free_dev_1;
         }
 
-        rc = pci_set_mwi(pdev);
-        if (rc < 0)
-                goto err_out_disable_2;
+        if (pci_set_mwi(pdev) < 0)
+                netif_info(tp, probe, dev, "Mem-Wr-Inval unavailable\n");
 
         /* make sure PCI base addr 1 is MMIO */
         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
@@ -3040,7 +3045,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                           "region #%d not an MMIO resource, aborting\n",
                           region);
                 rc = -ENODEV;
-                goto err_out_mwi_3;
+                goto err_out_mwi_2;
         }
 
         /* check for weird/broken PCI region reporting */
@@ -3048,13 +3053,13 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 netif_err(tp, probe, dev,
                           "Invalid PCI region size(s), aborting\n");
                 rc = -ENODEV;
-                goto err_out_mwi_3;
+                goto err_out_mwi_2;
         }
 
         rc = pci_request_regions(pdev, MODULENAME);
         if (rc < 0) {
                 netif_err(tp, probe, dev, "could not request regions\n");
-                goto err_out_mwi_3;
+                goto err_out_mwi_2;
         }
 
         tp->cp_cmd = PCIMulRW | RxChkSum;
@@ -3067,7 +3072,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
                 if (rc < 0) {
                         netif_err(tp, probe, dev, "DMA configuration failed\n");
-                        goto err_out_free_res_4;
+                        goto err_out_free_res_3;
                 }
         }
 
@@ -3076,7 +3081,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (!ioaddr) {
                 netif_err(tp, probe, dev, "cannot remap MMIO, aborting\n");
                 rc = -EIO;
-                goto err_out_free_res_4;
+                goto err_out_free_res_3;
         }
 
         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
@@ -3118,7 +3123,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (i == ARRAY_SIZE(rtl_chip_info)) {
                 dev_err(&pdev->dev,
                         "driver bug, MAC version not found in rtl_chip_info\n");
-                goto err_out_msi_5;
+                goto err_out_msi_4;
         }
         tp->chipset = i;
 
@@ -3183,7 +3188,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         rc = register_netdev(dev);
         if (rc < 0)
-                goto err_out_msi_5;
+                goto err_out_msi_4;
 
         pci_set_drvdata(pdev, dev);
 
@@ -3212,14 +3217,13 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 out:
         return rc;
 
-err_out_msi_5:
+err_out_msi_4:
         rtl_disable_msi(pdev, tp);
         iounmap(ioaddr);
-err_out_free_res_4:
+err_out_free_res_3:
         pci_release_regions(pdev);
-err_out_mwi_3:
+err_out_mwi_2:
         pci_clear_mwi(pdev);
-err_out_disable_2:
         pci_disable_device(pdev);
 err_out_free_dev_1:
         free_netdev(dev);
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 7724d7e4ebd6..573054ae7b58 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -8700,6 +8700,7 @@ static int tg3_test_msi(struct tg3 *tp)
         pci_disable_msi(tp->pdev);
 
         tp->tg3_flags2 &= ~TG3_FLG2_USING_MSI;
+        tp->napi[0].irq_vec = tp->pdev->irq;
 
         err = tg3_request_irq(tp, 0);
         if (err)
diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index ba56ce4382d9..63be4caec70e 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -385,4 +385,16 @@ config USB_CDC_PHONET
           cellular modem, as found on most Nokia handsets with the
           "PC suite" USB profile.
 
+config USB_IPHETH
+        tristate "Apple iPhone USB Ethernet driver"
+        default n
+        ---help---
+          Module used to share Internet connection (tethering) from your
+          iPhone (Original, 3G and 3GS) to your system.
+          Note that you need userspace libraries and programs that are needed
+          to pair your device with your system and that understand the iPhone
+          protocol.
+
+          For more information: http://giagio.com/wiki/moin.cgi/iPhoneEthernetDriver
+
 endmenu
diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile
index 82ea62955b56..edb09c0ddf8e 100644
--- a/drivers/net/usb/Makefile
+++ b/drivers/net/usb/Makefile
@@ -23,4 +23,5 @@ obj-$(CONFIG_USB_NET_MCS7830)	+= mcs7830.o
 obj-$(CONFIG_USB_USBNET)        += usbnet.o
 obj-$(CONFIG_USB_NET_INT51X1)   += int51x1.o
 obj-$(CONFIG_USB_CDC_PHONET)    += cdc-phonet.o
+obj-$(CONFIG_USB_IPHETH)        += ipheth.o
 
diff --git a/drivers/net/usb/ipheth.c b/drivers/net/usb/ipheth.c
new file mode 100644
index 000000000000..fd1033130a81
--- /dev/null
+++ b/drivers/net/usb/ipheth.c
@@ -0,0 +1,568 @@
+/*
+ * ipheth.c - Apple iPhone USB Ethernet driver
+ *
+ * Copyright (c) 2009 Diego Giagio <diego@giagio.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of GIAGIO.COM nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * The provided data structures and external interfaces from this code
+ * are not restricted to be used by modules with a GPL compatible license.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ *
+ * Attention: iPhone device must be paired, otherwise it won't respond to our
+ * driver. For more info: http://giagio.com/wiki/moin.cgi/iPhoneEthernetDriver
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/usb.h>
+#include <linux/workqueue.h>
+
+#define USB_VENDOR_APPLE        0x05ac
+#define USB_PRODUCT_IPHONE      0x1290
+#define USB_PRODUCT_IPHONE_3G   0x1292
+#define USB_PRODUCT_IPHONE_3GS  0x1294
+
+#define IPHETH_USBINTF_CLASS    255
+#define IPHETH_USBINTF_SUBCLASS 253
+#define IPHETH_USBINTF_PROTO    1
+
+#define IPHETH_BUF_SIZE         1516
+#define IPHETH_TX_TIMEOUT       (5 * HZ)
+
+#define IPHETH_INTFNUM          2
+#define IPHETH_ALT_INTFNUM      1
+
+#define IPHETH_CTRL_ENDP        0x00
+#define IPHETH_CTRL_BUF_SIZE    0x40
+#define IPHETH_CTRL_TIMEOUT     (5 * HZ)
+
+#define IPHETH_CMD_GET_MACADDR   0x00
+#define IPHETH_CMD_CARRIER_CHECK 0x45
+
+#define IPHETH_CARRIER_CHECK_TIMEOUT round_jiffies_relative(1 * HZ)
+#define IPHETH_CARRIER_ON       0x04
+
+static struct usb_device_id ipheth_table[] = {
+        { USB_DEVICE_AND_INTERFACE_INFO(
+                USB_VENDOR_APPLE, USB_PRODUCT_IPHONE,
+                IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
+                IPHETH_USBINTF_PROTO) },
+        { USB_DEVICE_AND_INTERFACE_INFO(
+                USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3G,
+                IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
+                IPHETH_USBINTF_PROTO) },
+        { USB_DEVICE_AND_INTERFACE_INFO(
+                USB_VENDOR_APPLE, USB_PRODUCT_IPHONE_3GS,
+                IPHETH_USBINTF_CLASS, IPHETH_USBINTF_SUBCLASS,
+                IPHETH_USBINTF_PROTO) },
+        { }
+};
+MODULE_DEVICE_TABLE(usb, ipheth_table);
+
+struct ipheth_device {
+        struct usb_device *udev;
+        struct usb_interface *intf;
+        struct net_device *net;
+        struct sk_buff *tx_skb;
+        struct urb *tx_urb;
+        struct urb *rx_urb;
+        unsigned char *tx_buf;
+        unsigned char *rx_buf;
+        unsigned char *ctrl_buf;
+        u8 bulk_in;
+        u8 bulk_out;
+        struct delayed_work carrier_work;
+};
+
+static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags);
+
+static int ipheth_alloc_urbs(struct ipheth_device *iphone)
+{
+        struct urb *tx_urb = NULL;
+        struct urb *rx_urb = NULL;
+        u8 *tx_buf = NULL;
+        u8 *rx_buf = NULL;
+
+        tx_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (tx_urb == NULL)
+                goto error;
+
+        rx_urb = usb_alloc_urb(0, GFP_KERNEL);
+        if (rx_urb == NULL)
+                goto error;
+
+        tx_buf = usb_buffer_alloc(iphone->udev,
+                                  IPHETH_BUF_SIZE,
+                                  GFP_KERNEL,
+                                  &tx_urb->transfer_dma);
+        if (tx_buf == NULL)
+                goto error;
+
+        rx_buf = usb_buffer_alloc(iphone->udev,
+                                  IPHETH_BUF_SIZE,
+                                  GFP_KERNEL,
+                                  &rx_urb->transfer_dma);
+        if (rx_buf == NULL)
+                goto error;
+
+
+        iphone->tx_urb = tx_urb;
+        iphone->rx_urb = rx_urb;
+        iphone->tx_buf = tx_buf;
+        iphone->rx_buf = rx_buf;
+        return 0;
+
+error:
+        usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, rx_buf,
+                        rx_urb->transfer_dma);
+        usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, tx_buf,
+                        tx_urb->transfer_dma);
+        usb_free_urb(rx_urb);
+        usb_free_urb(tx_urb);
+        return -ENOMEM;
+}
+
+static void ipheth_free_urbs(struct ipheth_device *iphone)
+{
+        usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, iphone->rx_buf,
+                        iphone->rx_urb->transfer_dma);
+        usb_buffer_free(iphone->udev, IPHETH_BUF_SIZE, iphone->tx_buf,
+                        iphone->tx_urb->transfer_dma);
+        usb_free_urb(iphone->rx_urb);
+        usb_free_urb(iphone->tx_urb);
+}
+
+static void ipheth_kill_urbs(struct ipheth_device *dev)
+{
+        usb_kill_urb(dev->tx_urb);
+        usb_kill_urb(dev->rx_urb);
+}
+
+static void ipheth_rcvbulk_callback(struct urb *urb)
+{
+        struct ipheth_device *dev;
+        struct sk_buff *skb;
+        int status;
+        char *buf;
+        int len;
+
+        dev = urb->context;
+        if (dev == NULL)
+                return;
+
+        status = urb->status;
+        switch (status) {
+        case -ENOENT:
+        case -ECONNRESET:
+        case -ESHUTDOWN:
+                return;
+        case 0:
+                break;
+        default:
+                err("%s: urb status: %d", __func__, urb->status);
+                return;
+        }
+
+        len = urb->actual_length;
+        buf = urb->transfer_buffer;
+
+        skb = dev_alloc_skb(NET_IP_ALIGN + len);
+        if (!skb) {
+                err("%s: dev_alloc_skb: -ENOMEM", __func__);
+                dev->net->stats.rx_dropped++;
+                return;
+        }
+
+        skb_reserve(skb, NET_IP_ALIGN);
+        memcpy(skb_put(skb, len), buf + NET_IP_ALIGN, len - NET_IP_ALIGN);
+        skb->dev = dev->net;
+        skb->protocol = eth_type_trans(skb, dev->net);
+
+        dev->net->stats.rx_packets++;
+        dev->net->stats.rx_bytes += len;
+
+        netif_rx(skb);
+        ipheth_rx_submit(dev, GFP_ATOMIC);
+}
+
+static void ipheth_sndbulk_callback(struct urb *urb)
+{
+        struct ipheth_device *dev;
+
+        dev = urb->context;
+        if (dev == NULL)
+                return;
+
+        if (urb->status != 0 &&
+            urb->status != -ENOENT &&
+            urb->status != -ECONNRESET &&
+            urb->status != -ESHUTDOWN)
+                err("%s: urb status: %d", __func__, urb->status);
+
+        dev_kfree_skb_irq(dev->tx_skb);
+        netif_wake_queue(dev->net);
+}
+
+static int ipheth_carrier_set(struct ipheth_device *dev)
+{
+        struct usb_device *udev = dev->udev;
+        int retval;
+
+        retval = usb_control_msg(udev,
+                        usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP),
+                        IPHETH_CMD_CARRIER_CHECK, /* request */
+                        0xc0, /* request type */
+                        0x00, /* value */
+                        0x02, /* index */
+                        dev->ctrl_buf, IPHETH_CTRL_BUF_SIZE,
+                        IPHETH_CTRL_TIMEOUT);
+        if (retval < 0) {
+                err("%s: usb_control_msg: %d", __func__, retval);
+                return retval;
+        }
+
+        if (dev->ctrl_buf[0] == IPHETH_CARRIER_ON)
+                netif_carrier_on(dev->net);
+        else
+                netif_carrier_off(dev->net);
+
+        return 0;
+}
+
+static void ipheth_carrier_check_work(struct work_struct *work)
+{
+        struct ipheth_device *dev = container_of(work, struct ipheth_device,
+                                                 carrier_work.work);
+
+        ipheth_carrier_set(dev);
+        schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT);
+}
+
+static int ipheth_get_macaddr(struct ipheth_device *dev)
+{
+        struct usb_device *udev = dev->udev;
+        struct net_device *net = dev->net;
+        int retval;
+
+        retval = usb_control_msg(udev,
+                                 usb_rcvctrlpipe(udev, IPHETH_CTRL_ENDP),
+                                 IPHETH_CMD_GET_MACADDR, /* request */
+                                 0xc0, /* request type */
+                                 0x00, /* value */
+                                 0x02, /* index */
+                                 dev->ctrl_buf,
+                                 IPHETH_CTRL_BUF_SIZE,
+                                 IPHETH_CTRL_TIMEOUT);
+        if (retval < 0) {
+                err("%s: usb_control_msg: %d", __func__, retval);
+        } else if (retval < ETH_ALEN) {
+                err("%s: usb_control_msg: short packet: %d bytes",
+                        __func__, retval);
+                retval = -EINVAL;
+        } else {
+                memcpy(net->dev_addr, dev->ctrl_buf, ETH_ALEN);
+                retval = 0;
+        }
+
+        return retval;
+}
+
+static int ipheth_rx_submit(struct ipheth_device *dev, gfp_t mem_flags)
+{
+        struct usb_device *udev = dev->udev;
+        int retval;
+
+        usb_fill_bulk_urb(dev->rx_urb, udev,
+                          usb_rcvbulkpipe(udev, dev->bulk_in),
+                          dev->rx_buf, IPHETH_BUF_SIZE,
+                          ipheth_rcvbulk_callback,
+                          dev);
+        dev->rx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+        retval = usb_submit_urb(dev->rx_urb, mem_flags);
+        if (retval)
+                err("%s: usb_submit_urb: %d", __func__, retval);
+        return retval;
+}
+
+static int ipheth_open(struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+        struct usb_device *udev = dev->udev;
+        int retval = 0;
+
+        usb_set_interface(udev, IPHETH_INTFNUM, IPHETH_ALT_INTFNUM);
+
+        retval = ipheth_carrier_set(dev);
+        if (retval)
+                return retval;
+
+        retval = ipheth_rx_submit(dev, GFP_KERNEL);
+        if (retval)
+                return retval;
+
+        schedule_delayed_work(&dev->carrier_work, IPHETH_CARRIER_CHECK_TIMEOUT);
+        netif_start_queue(net);
+        return retval;
+}
+
+static int ipheth_close(struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+
+        cancel_delayed_work_sync(&dev->carrier_work);
+        netif_stop_queue(net);
+        return 0;
+}
+
+static int ipheth_tx(struct sk_buff *skb, struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+        struct usb_device *udev = dev->udev;
+        int retval;
+
+        /* Paranoid */
+        if (skb->len > IPHETH_BUF_SIZE) {
+                WARN(1, "%s: skb too large: %d bytes", __func__, skb->len);
+                dev->net->stats.tx_dropped++;
+                dev_kfree_skb_irq(skb);
+                return NETDEV_TX_OK;
+        }
+
+        memcpy(dev->tx_buf, skb->data, skb->len);
+        if (skb->len < IPHETH_BUF_SIZE)
+                memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len);
+
+        usb_fill_bulk_urb(dev->tx_urb, udev,
+                          usb_sndbulkpipe(udev, dev->bulk_out),
+                          dev->tx_buf, IPHETH_BUF_SIZE,
+                          ipheth_sndbulk_callback,
+                          dev);
+        dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+
+        retval = usb_submit_urb(dev->tx_urb, GFP_ATOMIC);
+        if (retval) {
+                err("%s: usb_submit_urb: %d", __func__, retval);
+                dev->net->stats.tx_errors++;
+                dev_kfree_skb_irq(skb);
+        } else {
+                dev->tx_skb = skb;
+
+                dev->net->stats.tx_packets++;
+                dev->net->stats.tx_bytes += skb->len;
+                netif_stop_queue(net);
+        }
+
+        return NETDEV_TX_OK;
+}
+
+static void ipheth_tx_timeout(struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+
+        err("%s: TX timeout", __func__);
+        dev->net->stats.tx_errors++;
+        usb_unlink_urb(dev->tx_urb);
+}
+
+static struct net_device_stats *ipheth_stats(struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+        return &dev->net->stats;
+}
+
+static u32 ipheth_ethtool_op_get_link(struct net_device *net)
+{
+        struct ipheth_device *dev = netdev_priv(net);
+        return netif_carrier_ok(dev->net);
+}
+
+static struct ethtool_ops ops = {
+        .get_link = ipheth_ethtool_op_get_link
+};
+
+static const struct net_device_ops ipheth_netdev_ops = {
+        .ndo_open = &ipheth_open,
+        .ndo_stop = &ipheth_close,
+        .ndo_start_xmit = &ipheth_tx,
+        .ndo_tx_timeout = &ipheth_tx_timeout,
+        .ndo_get_stats = &ipheth_stats,
+};
+
+static struct device_type ipheth_type = {
+        .name   = "wwan",
+};
+
+static int ipheth_probe(struct usb_interface *intf,
+                        const struct usb_device_id *id)
+{
+        struct usb_device *udev = interface_to_usbdev(intf);
+        struct usb_host_interface *hintf;
+        struct usb_endpoint_descriptor *endp;
+        struct ipheth_device *dev;
+        struct net_device *netdev;
+        int i;
+        int retval;
+
+        netdev = alloc_etherdev(sizeof(struct ipheth_device));
+        if (!netdev)
+                return -ENOMEM;
+
+        netdev->netdev_ops = &ipheth_netdev_ops;
+        netdev->watchdog_timeo = IPHETH_TX_TIMEOUT;
+        strcpy(netdev->name, "wwan%d");
+
+        dev = netdev_priv(netdev);
+        dev->udev = udev;
+        dev->net = netdev;
+        dev->intf = intf;
+
+        /* Set up endpoints */
+        hintf = usb_altnum_to_altsetting(intf, IPHETH_ALT_INTFNUM);
+        if (hintf == NULL) {
+                retval = -ENODEV;
+                err("Unable to find alternate settings interface");
+                goto err_endpoints;
+        }
+
+        for (i = 0; i < hintf->desc.bNumEndpoints; i++) {
+                endp = &hintf->endpoint[i].desc;
+                if (usb_endpoint_is_bulk_in(endp))
+                        dev->bulk_in = endp->bEndpointAddress;
+                else if (usb_endpoint_is_bulk_out(endp))
+                        dev->bulk_out = endp->bEndpointAddress;
+        }
+        if (!(dev->bulk_in && dev->bulk_out)) {
+                retval = -ENODEV;
+                err("Unable to find endpoints");
+                goto err_endpoints;
+        }
+
+        dev->ctrl_buf = kmalloc(IPHETH_CTRL_BUF_SIZE, GFP_KERNEL);
+        if (dev->ctrl_buf == NULL) {
+                retval = -ENOMEM;
+                goto err_alloc_ctrl_buf;
+        }
+
+        retval = ipheth_get_macaddr(dev);
+        if (retval)
+                goto err_get_macaddr;
+
+        INIT_DELAYED_WORK(&dev->carrier_work, ipheth_carrier_check_work);
+
+        retval = ipheth_alloc_urbs(dev);
+        if (retval) {
+                err("error allocating urbs: %d", retval);
+                goto err_alloc_urbs;
+        }
+
+        usb_set_intfdata(intf, dev);
+
+        SET_NETDEV_DEV(netdev, &intf->dev);
+        SET_ETHTOOL_OPS(netdev, &ops);
+        SET_NETDEV_DEVTYPE(netdev, &ipheth_type);
+
+        retval = register_netdev(netdev);
+        if (retval) {
+                err("error registering netdev: %d", retval);
+                retval = -EIO;
+                goto err_register_netdev;
+        }
+
+        dev_info(&intf->dev, "Apple iPhone USB Ethernet device attached\n");
+        return 0;
+
+err_register_netdev:
+        ipheth_free_urbs(dev);
+err_alloc_urbs:
+err_get_macaddr:
+err_alloc_ctrl_buf:
+        kfree(dev->ctrl_buf);
+err_endpoints:
+        free_netdev(netdev);
+        return retval;
+}
+
+static void ipheth_disconnect(struct usb_interface *intf)
+{
+        struct ipheth_device *dev;
+
+        dev = usb_get_intfdata(intf);
+        if (dev != NULL) {
+                unregister_netdev(dev->net);
+                ipheth_kill_urbs(dev);
+                ipheth_free_urbs(dev);
+                kfree(dev->ctrl_buf);
+                free_netdev(dev->net);
+        }
+        usb_set_intfdata(intf, NULL);
+        dev_info(&intf->dev, "Apple iPhone USB Ethernet now disconnected\n");
+}
+
+static struct usb_driver ipheth_driver = {
+        .name =         "ipheth",
+        .probe =        ipheth_probe,
+        .disconnect =   ipheth_disconnect,
+        .id_table =     ipheth_table,
+};
+
+static int __init ipheth_init(void)
+{
+        int retval;
+
+        retval = usb_register(&ipheth_driver);
+        if (retval) {
+                err("usb_register failed: %d", retval);
+                return retval;
+        }
+        return 0;
+}
+
+static void __exit ipheth_exit(void)
+{
+        usb_deregister(&ipheth_driver);
+}
+
+module_init(ipheth_init);
+module_exit(ipheth_exit);
+
+MODULE_AUTHOR("Diego Giagio <diego@giagio.com>");
+MODULE_DESCRIPTION("Apple iPhone USB Ethernet driver");
+MODULE_LICENSE("Dual BSD/GPL");