Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits)
  qlcnic: adding co maintainer
  ixgbe: add support for active DA cables
  ixgbe: dcb, do not tag tc_prio_control frames
  ixgbe: fix ixgbe_tx_is_paused logic
  ixgbe: always enable vlan strip/insert when DCB is enabled
  ixgbe: remove some redundant code in setting FCoE FIP filter
  ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp
  ixgbe: fix header len when unsplit packet overflows to data buffer
  ipv6: Never schedule DAD timer on dead address
  ipv6: Use POSTDAD state
  ipv6: Use state_lock to protect ifa state
  ipv6: Replace inet6_ifaddr->dead with state
  cxgb4: notify upper drivers if the device is already up when they load
  cxgb4: keep interrupts available when the ports are brought down
  cxgb4: fix initial addition of MAC address
  cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
  cnic: Convert cnic_local_flags to atomic ops.
  can: Fix SJA1000 command register writes on SMP systems
  bridge: fix build for CONFIG_SYSFS disabled
  ARCNET: Limit com20020 PCI ID matches for SOHARD cards
  ...

Fix up various conflicts with pcmcia tree drivers/net/
{pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and
wireless/orinoco/spectrum_cs.c} and feature removal
(Documentation/feature-removal-schedule.txt).

Also fix a non-content conflict due to pm_qos_requirement getting
renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c

16 files changed, 218 insertions, 46 deletions

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index a2f29a38798a..2d8bd86bc5e2 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -35,7 +35,6 @@
 #include <linux/string.h>
 #include <linux/types.h>
 
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
 
@@ -376,7 +375,6 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev)
         at91_write(priv, AT91_MCR(mb), reg_mcr);
 
         stats->tx_bytes += cf->can_dlc;
-        dev->trans_start = jiffies;
 
         /* _NOTE_: substract AT91_MB_TX_FIRST offset from mb! */
         can_put_echo_skb(skb, dev, mb - AT91_MB_TX_FIRST);
@@ -662,7 +660,6 @@ static int at91_poll_err(struct net_device *dev, int quota, u32 reg_sr)
         at91_poll_err_frame(dev, cf, reg_sr);
         netif_receive_skb(skb);
 
-        dev->last_rx = jiffies;
         dev->stats.rx_packets++;
         dev->stats.rx_bytes += cf->can_dlc;
 
@@ -899,7 +896,6 @@ static void at91_irq_err(struct net_device *dev)
         at91_irq_err_state(dev, cf, new_state);
         netif_rx(skb);
 
-        dev->last_rx = jiffies;
         dev->stats.rx_packets++;
         dev->stats.rx_bytes += cf->can_dlc;
 
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 03489864376d..b6e890d28366 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -18,7 +18,6 @@
 #include <linux/skbuff.h>
 #include <linux/platform_device.h>
 
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
 
@@ -270,8 +269,6 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev)
         /* fill data length code */
         bfin_write16(&reg->chl[TRANSMIT_CHL].dlc, dlc);
 
-        dev->trans_start = jiffies;
-
         can_put_echo_skb(skb, dev, 0);
 
         /* set transmit request */
diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index b39b108318b4..b11a0cb5ed81 100644
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -58,7 +58,6 @@
  *
  */
 
-#include <linux/can.h>
 #include <linux/can/core.h>
 #include <linux/can/dev.h>
 #include <linux/can/platform/mcp251x.h>
@@ -476,7 +475,6 @@ static netdev_tx_t mcp251x_hard_start_xmit(struct sk_buff *skb,
 
         netif_stop_queue(net);
         priv->tx_skb = skb;
-        net->trans_start = jiffies;
         queue_work(priv->wq, &priv->tx_work);
 
         return NETDEV_TX_OK;
@@ -923,12 +921,16 @@ static int __devinit mcp251x_can_probe(struct spi_device *spi)
         struct net_device *net;
         struct mcp251x_priv *priv;
         struct mcp251x_platform_data *pdata = spi->dev.platform_data;
+        int model = spi_get_device_id(spi)->driver_data;
         int ret = -ENODEV;
 
         if (!pdata)
                 /* Platform data is required for osc freq */
                 goto error_out;
 
+        if (model)
+                pdata->model = model;
+
         /* Allocate can/net device */
         net = alloc_candev(sizeof(struct mcp251x_priv), TX_ECHO_SKB_MAX);
         if (!net) {
@@ -1118,6 +1120,15 @@ static int mcp251x_can_resume(struct spi_device *spi)
 #define mcp251x_can_resume NULL
 #endif
 
+static struct spi_device_id mcp251x_id_table[] = {
+        { "mcp251x",    0 /* Use pdata.model */ },
+        { "mcp2510",    CAN_MCP251X_MCP2510 },
+        { "mcp2515",    CAN_MCP251X_MCP2515 },
+        { },
+};
+
+MODULE_DEVICE_TABLE(spi, mcp251x_id_table);
+
 static struct spi_driver mcp251x_can_driver = {
         .driver = {
                 .name = DEVICE_NAME,
@@ -1125,6 +1136,7 @@ static struct spi_driver mcp251x_can_driver = {
                 .owner = THIS_MODULE,
         },
 
+        .id_table = mcp251x_id_table,
         .probe = mcp251x_can_probe,
         .remove = __devexit_p(mcp251x_can_remove),
         .suspend = mcp251x_can_suspend,
diff --git a/drivers/net/can/mscan/mpc5xxx_can.c b/drivers/net/can/mscan/mpc5xxx_can.c
index 03e7c48465a2..225fd147774a 100644
--- a/drivers/net/can/mscan/mpc5xxx_can.c
+++ b/drivers/net/can/mscan/mpc5xxx_can.c
@@ -25,7 +25,6 @@
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/netdevice.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/of_platform.h>
 #include <sysdev/fsl_soc.h>
diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 6b7dd578d417..64c378cd0c34 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -28,7 +28,6 @@
 #include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/list.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
 #include <linux/io.h>
diff --git a/drivers/net/can/sja1000/Kconfig b/drivers/net/can/sja1000/Kconfig
index 9e277d64a318..ae3505afd682 100644
--- a/drivers/net/can/sja1000/Kconfig
+++ b/drivers/net/can/sja1000/Kconfig
@@ -53,7 +53,9 @@ config CAN_PLX_PCI
           Driver supports now:
            - Adlink PCI-7841/cPCI-7841 card (http://www.adlinktech.com/)
            - Adlink PCI-7841/cPCI-7841 SE card
+           - esd CAN-PCI/CPCI/PCI104/200 (http://www.esd.eu/)
+           - esd CAN-PCI/PMC/266
+           - esd CAN-PCIe/2000
            - Marathon CAN-bus-PCI card (http://www.marathon.ru/)
            - TEWS TECHNOLOGIES TPMC810 card (http://www.tews.com/)
-
 endif
diff --git a/drivers/net/can/sja1000/ems_pci.c b/drivers/net/can/sja1000/ems_pci.c
index 5f53da0bc40c..36f4f9780c30 100644
--- a/drivers/net/can/sja1000/ems_pci.c
+++ b/drivers/net/can/sja1000/ems_pci.c
@@ -24,7 +24,6 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/pci.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/io.h>
 
diff --git a/drivers/net/can/sja1000/kvaser_pci.c b/drivers/net/can/sja1000/kvaser_pci.c
index 441e776a7f59..ed004cebd31f 100644
--- a/drivers/net/can/sja1000/kvaser_pci.c
+++ b/drivers/net/can/sja1000/kvaser_pci.c
@@ -36,7 +36,6 @@
 #include <linux/netdevice.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/io.h>
 
diff --git a/drivers/net/can/sja1000/plx_pci.c b/drivers/net/can/sja1000/plx_pci.c
index 4aff4070db96..437b5c716a24 100644
--- a/drivers/net/can/sja1000/plx_pci.c
+++ b/drivers/net/can/sja1000/plx_pci.c
@@ -27,7 +27,6 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/pci.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/io.h>
 
@@ -41,7 +40,10 @@ MODULE_DESCRIPTION("Socket-CAN driver for PLX90xx PCI-bridge cards with "
 MODULE_SUPPORTED_DEVICE("Adlink PCI-7841/cPCI-7841, "
                         "Adlink PCI-7841/cPCI-7841 SE, "
                         "Marathon CAN-bus-PCI, "
-                        "TEWS TECHNOLOGIES TPMC810");
+                        "TEWS TECHNOLOGIES TPMC810, "
+                        "esd CAN-PCI/CPCI/PCI104/200, "
+                        "esd CAN-PCI/PMC/266, "
+                        "esd CAN-PCIe/2000")
 MODULE_LICENSE("GPL v2");
 
 #define PLX_PCI_MAX_CHAN 2
@@ -50,11 +52,14 @@ struct plx_pci_card {
         int channels;                   /* detected channels count */
         struct net_device *net_dev[PLX_PCI_MAX_CHAN];
         void __iomem *conf_addr;
+
+        /* Pointer to device-dependent reset function */
+        void (*reset_func)(struct pci_dev *pdev);
 };
 
 #define PLX_PCI_CAN_CLOCK (16000000 / 2)
 
-/* PLX90xx registers */
+/* PLX9030/9050/9052 registers */
 #define PLX_INTCSR      0x4c            /* Interrupt Control/Status */
 #define PLX_CNTRL       0x50            /* User I/O, Direct Slave Response,
                                          * Serial EEPROM, and Initialization
@@ -66,6 +71,14 @@ struct plx_pci_card {
 #define PLX_PCI_INT_EN  (1 << 6)        /* PCI Interrupt Enable */
 #define PLX_PCI_RESET   (1 << 30)       /* PCI Adapter Software Reset */
 
+/* PLX9056 registers */
+#define PLX9056_INTCSR  0x68            /* Interrupt Control/Status */
+#define PLX9056_CNTRL   0x6c            /* Control / Software Reset */
+
+#define PLX9056_LINTI   (1 << 11)
+#define PLX9056_PCI_INT_EN (1 << 8)
+#define PLX9056_PCI_RCR (1 << 29)       /* Read Configuration Registers */
+
 /*
  * The board configuration is probably following:
  * RX1 is connected to ground.
@@ -101,6 +114,13 @@ struct plx_pci_card {
 #define ADLINK_PCI_VENDOR_ID            0x144A
 #define ADLINK_PCI_DEVICE_ID            0x7841
 
+#define ESD_PCI_SUB_SYS_ID_PCI200       0x0004
+#define ESD_PCI_SUB_SYS_ID_PCI266       0x0009
+#define ESD_PCI_SUB_SYS_ID_PMC266       0x000e
+#define ESD_PCI_SUB_SYS_ID_CPCI200      0x010b
+#define ESD_PCI_SUB_SYS_ID_PCIE2000     0x0200
+#define ESD_PCI_SUB_SYS_ID_PCI104200    0x0501
+
 #define MARATHON_PCI_DEVICE_ID          0x2715
 
 #define TEWS_PCI_VENDOR_ID              0x1498
@@ -108,6 +128,7 @@ struct plx_pci_card {
 
 static void plx_pci_reset_common(struct pci_dev *pdev);
 static void plx_pci_reset_marathon(struct pci_dev *pdev);
+static void plx9056_pci_reset_common(struct pci_dev *pdev);
 
 struct plx_pci_channel_map {
         u32 bar;
@@ -148,6 +169,30 @@ static struct plx_pci_card_info plx_pci_card_info_adlink_se __devinitdata = {
         /* based on PLX9052 */
 };
 
+static struct plx_pci_card_info plx_pci_card_info_esd200 __devinitdata = {
+        "esd CAN-PCI/CPCI/PCI104/200", 2,
+        PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
+        {0, 0x00, 0x00}, { {2, 0x00, 0x80}, {2, 0x100, 0x80} },
+        &plx_pci_reset_common
+        /* based on PLX9030/9050 */
+};
+
+static struct plx_pci_card_info plx_pci_card_info_esd266 __devinitdata = {
+        "esd CAN-PCI/PMC/266", 2,
+        PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
+        {0, 0x00, 0x00}, { {2, 0x00, 0x80}, {2, 0x100, 0x80} },
+        &plx9056_pci_reset_common
+        /* based on PLX9056 */
+};
+
+static struct plx_pci_card_info plx_pci_card_info_esd2000 __devinitdata = {
+        "esd CAN-PCIe/2000", 2,
+        PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
+        {0, 0x00, 0x00}, { {2, 0x00, 0x80}, {2, 0x100, 0x80} },
+        &plx9056_pci_reset_common
+        /* based on PEX8311 */
+};
+
 static struct plx_pci_card_info plx_pci_card_info_marathon __devinitdata = {
         "Marathon CAN-bus-PCI", 2,
         PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
@@ -180,6 +225,48 @@ static DEFINE_PCI_DEVICE_TABLE(plx_pci_tbl) = {
                 (kernel_ulong_t)&plx_pci_card_info_adlink_se
         },
         {
+                /* esd CAN-PCI/200 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PCI200,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd200
+        },
+        {
+                /* esd CAN-CPCI/200 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_CPCI200,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd200
+        },
+        {
+                /* esd CAN-PCI104/200 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PCI104200,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd200
+        },
+        {
+                /* esd CAN-PCI/266 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9056,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PCI266,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd266
+        },
+        {
+                /* esd CAN-PMC/266 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9056,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PMC266,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd266
+        },
+        {
+                /* esd CAN-PCIE/2000 */
+                PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9056,
+                PCI_VENDOR_ID_ESDGMBH, ESD_PCI_SUB_SYS_ID_PCIE2000,
+                0, 0,
+                (kernel_ulong_t)&plx_pci_card_info_esd2000
+        },
+        {
                 /* Marathon CAN-bus-PCI card */
                 PCI_VENDOR_ID_PLX, MARATHON_PCI_DEVICE_ID,
                 PCI_ANY_ID, PCI_ANY_ID,
@@ -242,7 +329,7 @@ static inline int plx_pci_check_sja1000(const struct sja1000_priv *priv)
 }
 
 /*
- * PLX90xx software reset
+ * PLX9030/50/52 software reset
  * Also LRESET# asserts and brings to reset device on the Local Bus (if wired).
  * For most cards it's enough for reset the SJA1000 chips.
  */
@@ -259,6 +346,38 @@ static void plx_pci_reset_common(struct pci_dev *pdev)
         iowrite32(cntrl, card->conf_addr + PLX_CNTRL);
 };
 
+/*
+ * PLX9056 software reset
+ * Assert LRESET# and reset device(s) on the Local Bus (if wired).
+ */
+static void plx9056_pci_reset_common(struct pci_dev *pdev)
+{
+        struct plx_pci_card *card = pci_get_drvdata(pdev);
+        u32 cntrl;
+
+        /* issue a local bus reset */
+        cntrl = ioread32(card->conf_addr + PLX9056_CNTRL);
+        cntrl |= PLX_PCI_RESET;
+        iowrite32(cntrl, card->conf_addr + PLX9056_CNTRL);
+        udelay(100);
+        cntrl ^= PLX_PCI_RESET;
+        iowrite32(cntrl, card->conf_addr + PLX9056_CNTRL);
+
+        /* reload local configuration from EEPROM */
+        cntrl |= PLX9056_PCI_RCR;
+        iowrite32(cntrl, card->conf_addr + PLX9056_CNTRL);
+
+        /*
+         * There is no safe way to poll for the end
+         * of reconfiguration process. Waiting for 10ms
+         * is safe.
+         */
+        mdelay(10);
+
+        cntrl ^= PLX9056_PCI_RCR;
+        iowrite32(cntrl, card->conf_addr + PLX9056_CNTRL);
+};
+
 /* Special reset function for Marathon card */
 static void plx_pci_reset_marathon(struct pci_dev *pdev)
 {
@@ -302,13 +421,16 @@ static void plx_pci_del_card(struct pci_dev *pdev)
                 free_sja1000dev(dev);
         }
 
-        plx_pci_reset_common(pdev);
+        card->reset_func(pdev);
 
         /*
-         * Disable interrupts from PCI-card (PLX90xx) and disable Local_1,
-         * Local_2 interrupts
+         * Disable interrupts from PCI-card and disable local
+         * interrupts
          */
-        iowrite32(0x0, card->conf_addr + PLX_INTCSR);
+        if (pdev->device != PCI_DEVICE_ID_PLX_9056)
+                iowrite32(0x0, card->conf_addr + PLX_INTCSR);
+        else
+                iowrite32(0x0, card->conf_addr + PLX9056_INTCSR);
 
         if (card->conf_addr)
                 pci_iounmap(pdev, card->conf_addr);
@@ -367,6 +489,7 @@ static int __devinit plx_pci_add_card(struct pci_dev *pdev,
         card->conf_addr = addr + ci->conf_map.offset;
 
         ci->reset_func(pdev);
+        card->reset_func = ci->reset_func;
 
         /* Detect available channels */
         for (i = 0; i < ci->channel_count; i++) {
@@ -438,10 +561,17 @@ static int __devinit plx_pci_add_card(struct pci_dev *pdev,
          * Enable interrupts from PCI-card (PLX90xx) and enable Local_1,
          * Local_2 interrupts from the SJA1000 chips
          */
-        val = ioread32(card->conf_addr + PLX_INTCSR);
-        val |= PLX_LINT1_EN | PLX_LINT2_EN | PLX_PCI_INT_EN;
-        iowrite32(val, card->conf_addr + PLX_INTCSR);
-
+        if (pdev->device != PCI_DEVICE_ID_PLX_9056) {
+                val = ioread32(card->conf_addr + PLX_INTCSR);
+                if (pdev->subsystem_vendor == PCI_VENDOR_ID_ESDGMBH)
+                        val |= PLX_LINT1_EN | PLX_PCI_INT_EN;
+                else
+                        val |= PLX_LINT1_EN | PLX_LINT2_EN | PLX_PCI_INT_EN;
+                iowrite32(val, card->conf_addr + PLX_INTCSR);
+        } else {
+                iowrite32(PLX9056_LINTI | PLX9056_PCI_INT_EN,
+                          card->conf_addr + PLX9056_INTCSR);
+        }
         return 0;
 
 failure_cleanup:
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 145b1a731a53..85f7cbfe8e5f 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -60,7 +60,6 @@
 #include <linux/skbuff.h>
 #include <linux/delay.h>
 
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
 
@@ -84,6 +83,20 @@ static struct can_bittiming_const sja1000_bittiming_const = {
         .brp_inc = 1,
 };
 
+static void sja1000_write_cmdreg(struct sja1000_priv *priv, u8 val)
+{
+        unsigned long flags;
+
+        /*
+         * The command register needs some locking and time to settle
+         * the write_reg() operation - especially on SMP systems.
+         */
+        spin_lock_irqsave(&priv->cmdreg_lock, flags);
+        priv->write_reg(priv, REG_CMR, val);
+        priv->read_reg(priv, REG_SR);
+        spin_unlock_irqrestore(&priv->cmdreg_lock, flags);
+}
+
 static int sja1000_probe_chip(struct net_device *dev)
 {
         struct sja1000_priv *priv = netdev_priv(dev);
@@ -293,11 +306,9 @@ static netdev_tx_t sja1000_start_xmit(struct sk_buff *skb,
         for (i = 0; i < dlc; i++)
                 priv->write_reg(priv, dreg++, cf->data[i]);
 
-        dev->trans_start = jiffies;
-
         can_put_echo_skb(skb, dev, 0);
 
-        priv->write_reg(priv, REG_CMR, CMD_TR);
+        sja1000_write_cmdreg(priv, CMD_TR);
 
         return NETDEV_TX_OK;
 }
@@ -346,7 +357,7 @@ static void sja1000_rx(struct net_device *dev)
         cf->can_id = id;
 
         /* release receive buffer */
-        priv->write_reg(priv, REG_CMR, CMD_RRB);
+        sja1000_write_cmdreg(priv, CMD_RRB);
 
         netif_rx(skb);
 
@@ -374,7 +385,7 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
                 cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
                 stats->rx_over_errors++;
                 stats->rx_errors++;
-                priv->write_reg(priv, REG_CMR, CMD_CDO);        /* clear bit */
+                sja1000_write_cmdreg(priv, CMD_CDO);    /* clear bit */
         }
 
         if (isrc & IRQ_EI) {
diff --git a/drivers/net/can/sja1000/sja1000.h b/drivers/net/can/sja1000/sja1000.h
index 97a622b9302f..de8e778f6832 100644
--- a/drivers/net/can/sja1000/sja1000.h
+++ b/drivers/net/can/sja1000/sja1000.h
@@ -167,6 +167,7 @@ struct sja1000_priv {
 
         void __iomem *reg_base;  /* ioremap'ed address to registers */
         unsigned long irq_flags; /* for request_irq() */
+        spinlock_t cmdreg_lock;  /* lock for concurrent cmd register writes */
 
         u16 flags;              /* custom mode flags */
         u8 ocr;                 /* output control register */
diff --git a/drivers/net/can/sja1000/sja1000_isa.c b/drivers/net/can/sja1000/sja1000_isa.c
index a6a51f155962..496223e9e2fc 100644
--- a/drivers/net/can/sja1000/sja1000_isa.c
+++ b/drivers/net/can/sja1000/sja1000_isa.c
@@ -23,7 +23,6 @@
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/io.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/platform/sja1000.h>
 
diff --git a/drivers/net/can/sja1000/sja1000_of_platform.c b/drivers/net/can/sja1000/sja1000_of_platform.c
index 9dd076a626a5..34e79efbd2fc 100644
--- a/drivers/net/can/sja1000/sja1000_of_platform.c
+++ b/drivers/net/can/sja1000/sja1000_of_platform.c
@@ -38,7 +38,6 @@
 #include <linux/interrupt.h>
 #include <linux/netdevice.h>
 #include <linux/delay.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 
 #include <linux/of_platform.h>
diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c
index 628374c2a05f..d9fadc489b32 100644
--- a/drivers/net/can/sja1000/sja1000_platform.c
+++ b/drivers/net/can/sja1000/sja1000_platform.c
@@ -24,7 +24,6 @@
 #include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <linux/irq.h>
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/platform/sja1000.h>
 #include <linux/io.h>
@@ -37,16 +36,36 @@ MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
 MODULE_DESCRIPTION("Socket-CAN driver for SJA1000 on the platform bus");
 MODULE_LICENSE("GPL v2");
 
-static u8 sp_read_reg(const struct sja1000_priv *priv, int reg)
+static u8 sp_read_reg8(const struct sja1000_priv *priv, int reg)
 {
         return ioread8(priv->reg_base + reg);
 }
 
-static void sp_write_reg(const struct sja1000_priv *priv, int reg, u8 val)
+static void sp_write_reg8(const struct sja1000_priv *priv, int reg, u8 val)
 {
         iowrite8(val, priv->reg_base + reg);
 }
 
+static u8 sp_read_reg16(const struct sja1000_priv *priv, int reg)
+{
+        return ioread8(priv->reg_base + reg * 2);
+}
+
+static void sp_write_reg16(const struct sja1000_priv *priv, int reg, u8 val)
+{
+        iowrite8(val, priv->reg_base + reg * 2);
+}
+
+static u8 sp_read_reg32(const struct sja1000_priv *priv, int reg)
+{
+        return ioread8(priv->reg_base + reg * 4);
+}
+
+static void sp_write_reg32(const struct sja1000_priv *priv, int reg, u8 val)
+{
+        iowrite8(val, priv->reg_base + reg * 4);
+}
+
 static int sp_probe(struct platform_device *pdev)
 {
         int err;
@@ -90,14 +109,29 @@ static int sp_probe(struct platform_device *pdev)
         priv = netdev_priv(dev);
 
         dev->irq = res_irq->start;
-        priv->irq_flags = res_irq->flags & IRQF_TRIGGER_MASK;
+        priv->irq_flags = res_irq->flags & (IRQF_TRIGGER_MASK | IRQF_SHARED);
         priv->reg_base = addr;
-        priv->read_reg = sp_read_reg;
-        priv->write_reg = sp_write_reg;
-        priv->can.clock.freq = pdata->clock;
+        /* The CAN clock frequency is half the oscillator clock frequency */
+        priv->can.clock.freq = pdata->osc_freq / 2;
         priv->ocr = pdata->ocr;
         priv->cdr = pdata->cdr;
 
+        switch (res_mem->flags & IORESOURCE_MEM_TYPE_MASK) {
+        case IORESOURCE_MEM_32BIT:
+                priv->read_reg = sp_read_reg32;
+                priv->write_reg = sp_write_reg32;
+                break;
+        case IORESOURCE_MEM_16BIT:
+                priv->read_reg = sp_read_reg16;
+                priv->write_reg = sp_write_reg16;
+                break;
+        case IORESOURCE_MEM_8BIT:
+        default:
+                priv->read_reg = sp_read_reg8;
+                priv->write_reg = sp_write_reg8;
+                break;
+        }
+
         dev_set_drvdata(&pdev->dev, dev);
         SET_NETDEV_DEV(dev, &pdev->dev);
 
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 0c3d2ba0d178..4d07f1ee7168 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -47,7 +47,6 @@
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 
-#include <linux/can.h>
 #include <linux/can/dev.h>
 #include <linux/can/error.h>
 #include <linux/can/platform/ti_hecc.h>
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index d800b598ae3d..df0a6369d2f2 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -300,8 +300,6 @@ static void ems_usb_read_interrupt_callback(struct urb *urb)
         else if (err)
                 dev_err(netdev->dev.parent,
                         "failed resubmitting intr urb: %d\n", err);
-
-        return;
 }
 
 static void ems_usb_rx_can_msg(struct ems_usb *dev, struct ems_cpc_msg *msg)
@@ -497,8 +495,6 @@ resubmit_urb:
         else if (retval)
                 dev_err(netdev->dev.parent,
                         "failed resubmitting read bulk urb: %d\n", retval);
-
-        return;
 }
 
 /*