Re: [PATCH] net: usb: active URB submitted multiple times

From: Dan Williams
Date: Thu Apr 11 2013 - 12:37:03 EST


On Thu, 2013-04-11 at 10:09 +0300, Petko Manolov wrote:
> From: Petko Manolov <petkan@xxxxxxxxxxxxx>
>
> (For inclusion in 3.10, diff against latest net-next.)

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Dan

> Pegasus driver used single callback for sync and async control URBs.
> Special flags were employed to distinguish between both, but due to flawed
> logic (as Sarah Sharp spotted) it didn't always work. As a result of this
> change [get|set]_registers() are now much simpler. Async write is also
> leaner and does not use single, statically allocated memory for
> usb_ctrlrequest, which is another potential race when asynchronously
> submitting URBs.
>
> The socket buffer pool for the receive path is now gone. It's existence
> didn't make much difference (performance-wise) and the code is better off
> without the spinlocks protecting it.
>
> Largely duplicated code in routines reading and writing MII registers is
> now packed in __mii_op().
>
> Adding URL for the public pegasus git repository.
>
> Signed-off-by: Petko Manolov <petkan@xxxxxxxxxxxxx>
> ---
> MAINTAINERS | 6 +-
> drivers/net/usb/pegasus.c | 601 +++++++++++++--------------------------------
> drivers/net/usb/pegasus.h | 10 +-
> 3 files changed, 181 insertions(+), 436 deletions(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index c39bdc3..863d8cb 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -8358,9 +8358,10 @@ S: Maintained
> F: drivers/usb/serial/option.c
>
> USB PEGASUS DRIVER
> -M: Petko Manolov <petkan@xxxxxxxxxxxxxxxxxxxxx>
> +M: Petko Manolov <petkan@xxxxxxxxxxxxx>
> L: linux-usb@xxxxxxxxxxxxxxx
> L: netdev@xxxxxxxxxxxxxxx
> +T: git git://git.code.sf.net/p/pegasus2/git
> W: http://pegasus2.sourceforge.net/
> S: Maintained
> F: drivers/net/usb/pegasus.*
> @@ -8380,9 +8381,10 @@ S: Supported
> F: drivers/usb/class/usblp.c
>
> USB RTL8150 DRIVER
> -M: Petko Manolov <petkan@xxxxxxxxxxxxxxxxxxxxx>
> +M: Petko Manolov <petkan@xxxxxxxxxxxxx>
> L: linux-usb@xxxxxxxxxxxxxxx
> L: netdev@xxxxxxxxxxxxxxx
> +T: git git://git.code.sf.net/p/pegasus2/git
> W: http://pegasus2.sourceforge.net/
> S: Maintained
> F: drivers/net/usb/rtl8150.c
> diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
> index 73051d1..501db20 100644
> --- a/drivers/net/usb/pegasus.c
> +++ b/drivers/net/usb/pegasus.c
> @@ -1,5 +1,5 @@
> /*
> - * Copyright (c) 1999-2005 Petko Manolov (petkan@xxxxxxxxxxxxxxxxxxxxx)
> + * Copyright (c) 1999-2013 Petko Manolov (petkan@xxxxxxxxxxxxx)
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License version 2 as
> @@ -26,6 +26,9 @@
> * v0.5.1 ethtool support added
> * v0.5.5 rx socket buffers are in a pool and the their allocation
> * is out of the interrupt routine.
> + * ...
> + * v0.9.1 simplified [get|set]_register(s), async update registers
> + * logic revisited, receive skb_pool removed.
> */
>
> #include <linux/sched.h>
> @@ -45,8 +48,8 @@
> /*
> * Version Information
> */
> -#define DRIVER_VERSION "v0.6.14 (2006/09/27)"
> -#define DRIVER_AUTHOR "Petko Manolov <petkan@xxxxxxxxxxxxxxxxxxxxx>"
> +#define DRIVER_VERSION "v0.9.3 (2013/04/09)"
> +#define DRIVER_AUTHOR "Petko Manolov <petkan@xxxxxxxxxxxxx>"
> #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver"
>
> static const char driver_name[] = "pegasus";
> @@ -108,299 +111,154 @@ MODULE_PARM_DESC(msg_level, "Override default message level");
> MODULE_DEVICE_TABLE(usb, pegasus_ids);
> static const struct net_device_ops pegasus_netdev_ops;
>
> -static int update_eth_regs_async(pegasus_t *);
> -/* Aargh!!! I _really_ hate such tweaks */
> -static void ctrl_callback(struct urb *urb)
> +static void async_ctrl_callback(struct urb *urb)
> {
> - pegasus_t *pegasus = urb->context;
> + struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
> int status = urb->status;
>
> - if (!pegasus)
> - return;
> -
> - switch (status) {
> - case 0:
> - if (pegasus->flags & ETH_REGS_CHANGE) {
> - pegasus->flags &= ~ETH_REGS_CHANGE;
> - pegasus->flags |= ETH_REGS_CHANGED;
> - update_eth_regs_async(pegasus);
> - return;
> - }
> - break;
> - case -EINPROGRESS:
> - return;
> - case -ENOENT:
> - break;
> - default:
> - if (net_ratelimit())
> - netif_dbg(pegasus, drv, pegasus->net,
> - "%s, status %d\n", __func__, status);
> - break;
> - }
> - pegasus->flags &= ~ETH_REGS_CHANGED;
> - wake_up(&pegasus->ctrl_wait);
> + if (status < 0)
> + dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status);
> + kfree(req);
> + usb_free_urb(urb);
> }
>
> -static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
> +static int get_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
> void *data)
> {
> int ret;
> - char *buffer;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - buffer = kmalloc(size, GFP_KERNEL);
> - if (!buffer)
> - return -ENOMEM;
> -
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> - while (pegasus->flags & ETH_REGS_CHANGED)
> - schedule();
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_RUNNING);
> -
> - pegasus->dr.bRequestType = PEGASUS_REQT_READ;
> - pegasus->dr.bRequest = PEGASUS_REQ_GET_REGS;
> - pegasus->dr.wValue = cpu_to_le16(0);
> - pegasus->dr.wIndex = cpu_to_le16(indx);
> - pegasus->dr.wLength = cpu_to_le16(size);
> - pegasus->ctrl_urb->transfer_buffer_length = size;
> -
> - usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
> - usb_rcvctrlpipe(pegasus->usb, 0),
> - (char *) &pegasus->dr,
> - buffer, size, ctrl_callback, pegasus);
> -
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> -
> - /* using ATOMIC, we'd never wake up if we slept */
> - if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
> - set_current_state(TASK_RUNNING);
> - if (ret == -ENODEV)
> - netif_device_detach(pegasus->net);
> - if (net_ratelimit())
> - netif_err(pegasus, drv, pegasus->net,
> - "%s, status %d\n", __func__, ret);
> - goto out;
> - }
> -
> - schedule();
> -out:
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - memcpy(data, buffer, size);
> - kfree(buffer);
>
> + ret = usb_control_msg(pegasus->usb, usb_rcvctrlpipe(pegasus->usb, 0),
> + PEGASUS_REQ_GET_REGS, PEGASUS_REQT_READ, 0,
> + indx, data, size, 1000);
> + if (ret < 0)
> + netif_dbg(pegasus, drv, pegasus->net,
> + "%s returned %d\n", __func__, ret);
> return ret;
> }
>
> -static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size,
> +static int set_registers(pegasus_t * pegasus, __u16 indx, __u16 size,
> void *data)
> {
> int ret;
> - char *buffer;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - buffer = kmemdup(data, size, GFP_KERNEL);
> - if (!buffer) {
> - netif_warn(pegasus, drv, pegasus->net,
> - "out of memory in %s\n", __func__);
> - return -ENOMEM;
> - }
> -
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> - while (pegasus->flags & ETH_REGS_CHANGED)
> - schedule();
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_RUNNING);
> -
> - pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
> - pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
> - pegasus->dr.wValue = cpu_to_le16(0);
> - pegasus->dr.wIndex = cpu_to_le16(indx);
> - pegasus->dr.wLength = cpu_to_le16(size);
> - pegasus->ctrl_urb->transfer_buffer_length = size;
> -
> - usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
> - usb_sndctrlpipe(pegasus->usb, 0),
> - (char *) &pegasus->dr,
> - buffer, size, ctrl_callback, pegasus);
> -
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> -
> - if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
> - if (ret == -ENODEV)
> - netif_device_detach(pegasus->net);
> - netif_err(pegasus, drv, pegasus->net,
> - "%s, status %d\n", __func__, ret);
> - goto out;
> - }
> -
> - schedule();
> -out:
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - kfree(buffer);
>
> + ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
> + PEGASUS_REQ_SET_REGS, PEGASUS_REQT_WRITE, 0,
> + indx, data, size, 100);
> + if (ret < 0)
> + netif_dbg(pegasus, drv, pegasus->net,
> + "%s returned %d\n", __func__, ret);
> return ret;
> }
>
> -static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data)
> +static int set_register(pegasus_t * pegasus, __u16 indx, __u8 data)
> {
> int ret;
> - char *tmp;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - tmp = kmemdup(&data, 1, GFP_KERNEL);
> - if (!tmp) {
> - netif_warn(pegasus, drv, pegasus->net,
> - "out of memory in %s\n", __func__);
> - return -ENOMEM;
> - }
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> - while (pegasus->flags & ETH_REGS_CHANGED)
> - schedule();
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_RUNNING);
> -
> - pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
> - pegasus->dr.bRequest = PEGASUS_REQ_SET_REG;
> - pegasus->dr.wValue = cpu_to_le16(data);
> - pegasus->dr.wIndex = cpu_to_le16(indx);
> - pegasus->dr.wLength = cpu_to_le16(1);
> - pegasus->ctrl_urb->transfer_buffer_length = 1;
> -
> - usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
> - usb_sndctrlpipe(pegasus->usb, 0),
> - (char *) &pegasus->dr,
> - tmp, 1, ctrl_callback, pegasus);
> -
> - add_wait_queue(&pegasus->ctrl_wait, &wait);
> - set_current_state(TASK_UNINTERRUPTIBLE);
> -
> - if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
> - if (ret == -ENODEV)
> - netif_device_detach(pegasus->net);
> - if (net_ratelimit())
> - netif_err(pegasus, drv, pegasus->net,
> - "%s, status %d\n", __func__, ret);
> - goto out;
> - }
> -
> - schedule();
> -out:
> - remove_wait_queue(&pegasus->ctrl_wait, &wait);
> - kfree(tmp);
>
> + ret = usb_control_msg(pegasus->usb, usb_sndctrlpipe(pegasus->usb, 0),
> + PEGASUS_REQ_SET_REG, PEGASUS_REQT_WRITE, data,
> + indx, &data, 1, 1000);
> + if (ret < 0)
> + netif_dbg(pegasus, drv, pegasus->net,
> + "%s returned %d\n", __func__, ret);
> return ret;
> }
>
> -static int update_eth_regs_async(pegasus_t *pegasus)
> +static int update_eth_regs_async(pegasus_t * pegasus)
> {
> - int ret;
> + int ret = -ENOMEM;
> + struct urb *async_urb;
> + struct usb_ctrlrequest *req;
>
> - pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
> - pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
> - pegasus->dr.wValue = cpu_to_le16(0);
> - pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
> - pegasus->dr.wLength = cpu_to_le16(3);
> - pegasus->ctrl_urb->transfer_buffer_length = 3;
> + req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
> + if (req == NULL)
> + return ret;
>
> - usb_fill_control_urb(pegasus->ctrl_urb, pegasus->usb,
> - usb_sndctrlpipe(pegasus->usb, 0),
> - (char *) &pegasus->dr,
> - pegasus->eth_regs, 3, ctrl_callback, pegasus);
> + if ((async_urb = usb_alloc_urb(0, GFP_ATOMIC)) == NULL) {
> + kfree(req);
> + return ret;
> + }
> + req->bRequestType = PEGASUS_REQT_WRITE;
> + req->bRequest = PEGASUS_REQ_SET_REGS;
> + req->wValue = cpu_to_le16(0);
> + req->wIndex = cpu_to_le16(EthCtrl0);
> + req->wLength = cpu_to_le16(3);
> +
> + usb_fill_control_urb(async_urb, pegasus->usb,
> + usb_sndctrlpipe(pegasus->usb, 0), (void *)req,
> + pegasus->eth_regs, 3, async_ctrl_callback, req);
>
> - if ((ret = usb_submit_urb(pegasus->ctrl_urb, GFP_ATOMIC))) {
> + if ((ret = usb_submit_urb(async_urb, GFP_ATOMIC))) {
> if (ret == -ENODEV)
> netif_device_detach(pegasus->net);
> netif_err(pegasus, drv, pegasus->net,
> - "%s, status %d\n", __func__, ret);
> + "%s returned %d\n", __func__, ret);
> }
> -
> return ret;
> }
>
> -/* Returns 0 on success, error on failure */
> -static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd)
> +static int __mii_op(pegasus_t * p, __u8 phy, __u8 indx, __u16 * regd, __u8 cmd)
> {
> int i;
> __u8 data[4] = { phy, 0, 0, indx };
> __le16 regdi;
> - int ret;
> + int ret = -ETIMEDOUT;
>
> - set_register(pegasus, PhyCtrl, 0);
> - set_registers(pegasus, PhyAddr, sizeof(data), data);
> - set_register(pegasus, PhyCtrl, (indx | PHY_READ));
> + if (cmd & PHY_WRITE) {
> + __le16 *t = (__le16 *) & data[1];
> + *t = cpu_to_le16(*regd);
> + }
> + set_register(p, PhyCtrl, 0);
> + set_registers(p, PhyAddr, sizeof(data), data);
> + set_register(p, PhyCtrl, (indx | cmd));
> for (i = 0; i < REG_TIMEOUT; i++) {
> - ret = get_registers(pegasus, PhyCtrl, 1, data);
> - if (ret == -ESHUTDOWN)
> + ret = get_registers(p, PhyCtrl, 1, data);
> + if (ret < 0)
> goto fail;
> if (data[0] & PHY_DONE)
> break;
> }
> -
> if (i >= REG_TIMEOUT)
> goto fail;
> -
> - ret = get_registers(pegasus, PhyData, 2, &regdi);
> - *regd = le16_to_cpu(regdi);
> + if (cmd & PHY_READ) {
> + ret = get_registers(p, PhyData, 2, &regdi);
> + *regd = le16_to_cpu(regdi);
> + return ret;
> + }
> + return 0;
> +fail:
> + netif_dbg(p, drv, p->net, "%s failed\n", __func__);
> return ret;
> +}
>
> -fail:
> - netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
> +/* Returns non-negative int on success, error on failure */
> +static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
> +{
> + return __mii_op(pegasus, phy, indx, regd, PHY_READ);
> +}
>
> - return ret;
> +/* Returns zero on success, error on failure */
> +static int write_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
> +{
> + return __mii_op(pegasus, phy, indx, regd, PHY_WRITE);
> }
>
> static int mdio_read(struct net_device *dev, int phy_id, int loc)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> - u16 res;
> + __u16 res;
>
> read_mii_word(pegasus, phy_id, loc, &res);
> return (int)res;
> }
>
> -static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 regd)
> -{
> - int i;
> - __u8 data[4] = { phy, 0, 0, indx };
> - int ret;
> -
> - data[1] = (u8) regd;
> - data[2] = (u8) (regd >> 8);
> - set_register(pegasus, PhyCtrl, 0);
> - set_registers(pegasus, PhyAddr, sizeof(data), data);
> - set_register(pegasus, PhyCtrl, (indx | PHY_WRITE));
> - for (i = 0; i < REG_TIMEOUT; i++) {
> - ret = get_registers(pegasus, PhyCtrl, 1, data);
> - if (ret == -ESHUTDOWN)
> - goto fail;
> - if (data[0] & PHY_DONE)
> - break;
> - }
> -
> - if (i >= REG_TIMEOUT)
> - goto fail;
> -
> - return ret;
> -
> -fail:
> - netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
> - return -ETIMEDOUT;
> -}
> -
> static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
> {
> pegasus_t *pegasus = netdev_priv(dev);
>
> - write_mii_word(pegasus, phy_id, loc, val);
> + write_mii_word(pegasus, phy_id, loc, (__u16 *) & val);
> }
>
> -static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
> +static int read_eprom_word(pegasus_t * pegasus, __u8 index, __u16 * retdata)
> {
> int i;
> __u8 tmp;
> @@ -420,18 +278,16 @@ static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
> }
> if (i >= REG_TIMEOUT)
> goto fail;
> -
> ret = get_registers(pegasus, EpromData, 2, &retdatai);
> *retdata = le16_to_cpu(retdatai);
> return ret;
> -
> fail:
> netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
> return -ETIMEDOUT;
> }
>
> #ifdef PEGASUS_WRITE_EEPROM
> -static inline void enable_eprom_write(pegasus_t *pegasus)
> +static inline void enable_eprom_write(pegasus_t * pegasus)
> {
> __u8 tmp;
> int ret;
> @@ -440,7 +296,7 @@ static inline void enable_eprom_write(pegasus_t *pegasus)
> set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE);
> }
>
> -static inline void disable_eprom_write(pegasus_t *pegasus)
> +static inline void disable_eprom_write(pegasus_t * pegasus)
> {
> __u8 tmp;
> int ret;
> @@ -450,7 +306,7 @@ static inline void disable_eprom_write(pegasus_t *pegasus)
> set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE);
> }
>
> -static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
> +static int write_eprom_word(pegasus_t * pegasus, __u8 index, __u16 data)
> {
> int i;
> __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
> @@ -473,16 +329,14 @@ static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data)
> disable_eprom_write(pegasus);
> if (i >= REG_TIMEOUT)
> goto fail;
> -
> return ret;
> -
> fail:
> netif_warn(pegasus, drv, pegasus->net, "%s failed\n", __func__);
> return -ETIMEDOUT;
> }
> -#endif /* PEGASUS_WRITE_EEPROM */
> +#endif /* PEGASUS_WRITE_EEPROM */
>
> -static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
> +static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
> {
> int i;
> __u16 w16;
> @@ -493,7 +347,7 @@ static inline void get_node_id(pegasus_t *pegasus, __u8 *id)
> }
> }
>
> -static void set_ethernet_addr(pegasus_t *pegasus)
> +static void set_ethernet_addr(pegasus_t * pegasus)
> {
> __u8 node_id[6];
>
> @@ -506,7 +360,7 @@ static void set_ethernet_addr(pegasus_t *pegasus)
> memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
> }
>
> -static inline int reset_mac(pegasus_t *pegasus)
> +static inline int reset_mac(pegasus_t * pegasus)
> {
> __u8 data = 0x8;
> int i;
> @@ -528,7 +382,6 @@ static inline int reset_mac(pegasus_t *pegasus)
> }
> if (i == REG_TIMEOUT)
> return -ETIMEDOUT;
> -
> if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
> usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
> set_register(pegasus, Gpio0, 0x24);
> @@ -537,18 +390,17 @@ static inline int reset_mac(pegasus_t *pegasus)
> if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_ELCON) {
> __u16 auxmode;
> read_mii_word(pegasus, 3, 0x1b, &auxmode);
> - write_mii_word(pegasus, 3, 0x1b, auxmode | 4);
> + auxmode |= 4;
> + write_mii_word(pegasus, 3, 0x1b, &auxmode);
> }
> -
> return 0;
> }
>
> -static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
> +static void enable_net_traffic(struct net_device *dev, struct usb_device *usb)
> {
> __u16 linkpart;
> __u8 data[4];
> pegasus_t *pegasus = netdev_priv(dev);
> - int ret;
>
> read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart);
> data[0] = 0xc9;
> @@ -562,62 +414,16 @@ static int enable_net_traffic(struct net_device *dev, struct usb_device *usb)
> data[2] = loopback ? 0x09 : 0x01;
>
> memcpy(pegasus->eth_regs, data, sizeof(data));
> - ret = set_registers(pegasus, EthCtrl0, 3, data);
> + set_registers(pegasus, EthCtrl0, 3, data);
>
> if (usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS ||
> usb_dev_id[pegasus->dev_index].vendor == VENDOR_LINKSYS2 ||
> usb_dev_id[pegasus->dev_index].vendor == VENDOR_DLINK) {
> - u16 auxmode;
> + __u16 auxmode;
> read_mii_word(pegasus, 0, 0x1b, &auxmode);
> - write_mii_word(pegasus, 0, 0x1b, auxmode | 4);
> + auxmode |= 4;
> + write_mii_word(pegasus, 0, 0x1b, &auxmode);
> }
> -
> - return ret;
> -}
> -
> -static void fill_skb_pool(pegasus_t *pegasus)
> -{
> - int i;
> -
> - for (i = 0; i < RX_SKBS; i++) {
> - if (pegasus->rx_pool[i])
> - continue;
> - pegasus->rx_pool[i] = dev_alloc_skb(PEGASUS_MTU + 2);
> - /*
> - ** we give up if the allocation fail. the tasklet will be
> - ** rescheduled again anyway...
> - */
> - if (pegasus->rx_pool[i] == NULL)
> - return;
> - skb_reserve(pegasus->rx_pool[i], 2);
> - }
> -}
> -
> -static void free_skb_pool(pegasus_t *pegasus)
> -{
> - int i;
> -
> - for (i = 0; i < RX_SKBS; i++) {
> - if (pegasus->rx_pool[i]) {
> - dev_kfree_skb(pegasus->rx_pool[i]);
> - pegasus->rx_pool[i] = NULL;
> - }
> - }
> -}
> -
> -static inline struct sk_buff *pull_skb(pegasus_t * pegasus)
> -{
> - int i;
> - struct sk_buff *skb;
> -
> - for (i = 0; i < RX_SKBS; i++) {
> - if (likely(pegasus->rx_pool[i] != NULL)) {
> - skb = pegasus->rx_pool[i];
> - pegasus->rx_pool[i] = NULL;
> - return skb;
> - }
> - }
> - return NULL;
> }
>
> static void read_bulk_callback(struct urb *urb)
> @@ -643,7 +449,7 @@ static void read_bulk_callback(struct urb *urb)
> netif_dbg(pegasus, rx_err, net, "reset MAC\n");
> pegasus->flags &= ~PEGASUS_RX_BUSY;
> break;
> - case -EPIPE: /* stall, or disconnect from TT */
> + case -EPIPE: /* stall, or disconnect from TT */
> /* FIXME schedule work to clear the halt */
> netif_warn(pegasus, rx_err, net, "no rx stall recovery\n");
> return;
> @@ -665,16 +471,16 @@ static void read_bulk_callback(struct urb *urb)
> netif_dbg(pegasus, rx_err, net,
> "RX packet error %x\n", rx_status);
> pegasus->stats.rx_errors++;
> - if (rx_status & 0x06) /* long or runt */
> + if (rx_status & 0x06) /* long or runt */
> pegasus->stats.rx_length_errors++;
> if (rx_status & 0x08)
> pegasus->stats.rx_crc_errors++;
> - if (rx_status & 0x10) /* extra bits */
> + if (rx_status & 0x10) /* extra bits */
> pegasus->stats.rx_frame_errors++;
> goto goon;
> }
> if (pegasus->chip == 0x8513) {
> - pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer);
> + pkt_len = le32_to_cpu(*(__le32 *) urb->transfer_buffer);
> pkt_len &= 0x0fff;
> pegasus->rx_skb->data += 2;
> } else {
> @@ -683,14 +489,12 @@ static void read_bulk_callback(struct urb *urb)
> pkt_len &= 0xfff;
> pkt_len -= 8;
> }
> -
> /*
> * If the packet is unreasonably long, quietly drop it rather than
> * kernel panicing by calling skb_put.
> */
> if (pkt_len > PEGASUS_MTU)
> goto goon;
> -
> /*
> * at this point we are sure pegasus->rx_skb != NULL
> * so we go ahead and pass up the packet.
> @@ -704,10 +508,8 @@ static void read_bulk_callback(struct urb *urb)
> if (pegasus->flags & PEGASUS_UNPLUG)
> return;
>
> - spin_lock(&pegasus->rx_pool_lock);
> - pegasus->rx_skb = pull_skb(pegasus);
> - spin_unlock(&pegasus->rx_pool_lock);
> -
> + pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
> + PEGASUS_MTU, GFP_ATOMIC);
> if (pegasus->rx_skb == NULL)
> goto tl_sched;
> goon:
> @@ -724,9 +526,7 @@ goon:
> } else {
> pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
> }
> -
> return;
> -
> tl_sched:
> tasklet_schedule(&pegasus->rx_tl);
> }
> @@ -734,24 +534,22 @@ tl_sched:
> static void rx_fixup(unsigned long data)
> {
> pegasus_t *pegasus;
> - unsigned long flags;
> int status;
>
> pegasus = (pegasus_t *) data;
> if (pegasus->flags & PEGASUS_UNPLUG)
> return;
> -
> - spin_lock_irqsave(&pegasus->rx_pool_lock, flags);
> - fill_skb_pool(pegasus);
> if (pegasus->flags & PEGASUS_RX_URB_FAIL)
> if (pegasus->rx_skb)
> goto try_again;
> if (pegasus->rx_skb == NULL)
> - pegasus->rx_skb = pull_skb(pegasus);
> + pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
> + PEGASUS_MTU,
> + GFP_ATOMIC);
> if (pegasus->rx_skb == NULL) {
> netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n");
> tasklet_schedule(&pegasus->rx_tl);
> - goto done;
> + return;
> }
> usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
> usb_rcvbulkpipe(pegasus->usb, 1),
> @@ -767,8 +565,6 @@ try_again:
> } else {
> pegasus->flags &= ~PEGASUS_RX_URB_FAIL;
> }
> -done:
> - spin_unlock_irqrestore(&pegasus->rx_pool_lock, flags);
> }
>
> static void write_bulk_callback(struct urb *urb)
> @@ -779,12 +575,9 @@ static void write_bulk_callback(struct urb *urb)
>
> if (!pegasus)
> return;
> -
> net = pegasus->net;
> -
> if (!netif_device_present(net) || !netif_running(net))
> return;
> -
> switch (status) {
> case -EPIPE:
> /* FIXME schedule_work() to clear the tx halt */
> @@ -802,8 +595,7 @@ static void write_bulk_callback(struct urb *urb)
> case 0:
> break;
> }
> -
> - net->trans_start = jiffies; /* prevent tx timeout */
> + net->trans_start = jiffies; /* prevent tx timeout */
> netif_wake_queue(net);
> }
>
> @@ -816,7 +608,6 @@ static void intr_callback(struct urb *urb)
> if (!pegasus)
> return;
> net = pegasus->net;
> -
> switch (status) {
> case 0:
> break;
> @@ -830,13 +621,12 @@ static void intr_callback(struct urb *urb)
> */
> netif_dbg(pegasus, timer, net, "intr status %d\n", status);
> }
> -
> if (urb->actual_length >= 6) {
> u8 *d = urb->transfer_buffer;
>
> /* byte 0 == tx_status1, reg 2B */
> - if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL
> - |LATE_COL|JABBER_TIMEOUT)) {
> + if (d[0] & (TX_UNDERRUN | EXCESSIVE_COL
> + | LATE_COL | JABBER_TIMEOUT)) {
> pegasus->stats.tx_errors++;
> if (d[0] & TX_UNDERRUN)
> pegasus->stats.tx_fifo_errors++;
> @@ -854,7 +644,6 @@ static void intr_callback(struct urb *urb)
> /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
> pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
> }
> -
> res = usb_submit_urb(urb, GFP_ATOMIC);
> if (res == -ENODEV)
> netif_device_detach(pegasus->net);
> @@ -872,7 +661,7 @@ static void pegasus_tx_timeout(struct net_device *net)
> }
>
> static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
> - struct net_device *net)
> + struct net_device *net)
> {
> pegasus_t *pegasus = netdev_priv(net);
> int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3;
> @@ -890,10 +679,10 @@ static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb,
> if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) {
> netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res);
> switch (res) {
> - case -EPIPE: /* stall, or disconnect from TT */
> + case -EPIPE: /* stall, or disconnect from TT */
> /* cleanup should already have been scheduled */
> break;
> - case -ENODEV: /* disconnect() upcoming */
> + case -ENODEV: /* disconnect() upcoming */
> case -EPERM:
> netif_device_detach(pegasus->net);
> break;
> @@ -915,14 +704,14 @@ static struct net_device_stats *pegasus_netdev_stats(struct net_device *dev)
> return &((pegasus_t *) netdev_priv(dev))->stats;
> }
>
> -static inline void disable_net_traffic(pegasus_t *pegasus)
> +static inline void disable_net_traffic(pegasus_t * pegasus)
> {
> __le16 tmp = cpu_to_le16(0);
>
> set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
> }
>
> -static inline void get_interrupt_interval(pegasus_t *pegasus)
> +static inline void get_interrupt_interval(pegasus_t * pegasus)
> {
> u16 data;
> u8 interval;
> @@ -935,7 +724,7 @@ static inline void get_interrupt_interval(pegasus_t *pegasus)
> "intr interval changed from %ums to %ums\n",
> interval, 0x80);
> interval = 0x80;
> - data = (data & 0x00FF) | ((u16)interval << 8);
> + data = (data & 0x00FF) | ((u16) interval << 8);
> #ifdef PEGASUS_WRITE_EEPROM
> write_eprom_word(pegasus, 4, data);
> #endif
> @@ -951,71 +740,58 @@ static void set_carrier(struct net_device *net)
>
> if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
> return;
> -
> if (tmp & BMSR_LSTATUS)
> netif_carrier_on(net);
> else
> netif_carrier_off(net);
> }
>
> -static void free_all_urbs(pegasus_t *pegasus)
> +static void free_all_urbs(pegasus_t * pegasus)
> {
> usb_free_urb(pegasus->intr_urb);
> usb_free_urb(pegasus->tx_urb);
> usb_free_urb(pegasus->rx_urb);
> - usb_free_urb(pegasus->ctrl_urb);
> }
>
> -static void unlink_all_urbs(pegasus_t *pegasus)
> +static void unlink_all_urbs(pegasus_t * pegasus)
> {
> usb_kill_urb(pegasus->intr_urb);
> usb_kill_urb(pegasus->tx_urb);
> usb_kill_urb(pegasus->rx_urb);
> - usb_kill_urb(pegasus->ctrl_urb);
> }
>
> -static int alloc_urbs(pegasus_t *pegasus)
> +static int alloc_urbs(pegasus_t * pegasus)
> {
> - pegasus->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
> - if (!pegasus->ctrl_urb)
> - return 0;
> pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
> if (!pegasus->rx_urb) {
> - usb_free_urb(pegasus->ctrl_urb);
> return 0;
> }
> pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
> if (!pegasus->tx_urb) {
> usb_free_urb(pegasus->rx_urb);
> - usb_free_urb(pegasus->ctrl_urb);
> return 0;
> }
> pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
> if (!pegasus->intr_urb) {
> usb_free_urb(pegasus->tx_urb);
> usb_free_urb(pegasus->rx_urb);
> - usb_free_urb(pegasus->ctrl_urb);
> return 0;
> }
> -
> return 1;
> }
>
> static int pegasus_open(struct net_device *net)
> {
> pegasus_t *pegasus = netdev_priv(net);
> - int res;
> + int res = -ENOMEM;
>
> if (pegasus->rx_skb == NULL)
> - pegasus->rx_skb = pull_skb(pegasus);
> - /*
> - ** Note: no point to free the pool. it is empty :-)
> - */
> + pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net,
> + PEGASUS_MTU,
> + GFP_KERNEL);
> if (!pegasus->rx_skb)
> - return -ENOMEM;
> -
> + goto exit;
> res = set_registers(pegasus, EthID, 6, net->dev_addr);
> -
> usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb,
> usb_rcvbulkpipe(pegasus->usb, 1),
> pegasus->rx_skb->data, PEGASUS_MTU + 8,
> @@ -1026,7 +802,6 @@ static int pegasus_open(struct net_device *net)
> netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res);
> goto exit;
> }
> -
> usb_fill_int_urb(pegasus->intr_urb, pegasus->usb,
> usb_rcvintpipe(pegasus->usb, 3),
> pegasus->intr_buff, sizeof(pegasus->intr_buff),
> @@ -1038,18 +813,9 @@ static int pegasus_open(struct net_device *net)
> usb_kill_urb(pegasus->rx_urb);
> goto exit;
> }
> - if ((res = enable_net_traffic(net, pegasus->usb))) {
> - netif_dbg(pegasus, ifup, net,
> - "can't enable_net_traffic() - %d\n", res);
> - res = -EIO;
> - usb_kill_urb(pegasus->rx_urb);
> - usb_kill_urb(pegasus->intr_urb);
> - free_skb_pool(pegasus);
> - goto exit;
> - }
> + enable_net_traffic(net, pegasus->usb);
> set_carrier(net);
> netif_start_queue(net);
> - netif_dbg(pegasus, ifup, net, "open\n");
> res = 0;
> exit:
> return res;
> @@ -1081,25 +847,22 @@ static void pegasus_get_drvinfo(struct net_device *dev,
> /* also handles three patterns of some kind in hardware */
> #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY)
>
> -static void
> -pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
> +static void pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
> {
> - pegasus_t *pegasus = netdev_priv(dev);
> + pegasus_t *pegasus = netdev_priv(dev);
>
> wol->supported = WAKE_MAGIC | WAKE_PHY;
> wol->wolopts = pegasus->wolopts;
> }
>
> -static int
> -pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
> +static int pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
> {
> - pegasus_t *pegasus = netdev_priv(dev);
> - u8 reg78 = 0x04;
> - int ret;
> + pegasus_t *pegasus = netdev_priv(dev);
> + u8 reg78 = 0x04;
> + int r;
>
> if (wol->wolopts & ~WOL_SUPPORTED)
> return -EINVAL;
> -
> if (wol->wolopts & WAKE_MAGIC)
> reg78 |= 0x80;
> if (wol->wolopts & WAKE_PHY)
> @@ -1111,11 +874,10 @@ pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
> pegasus->eth_regs[0] &= ~0x10;
> pegasus->wolopts = wol->wolopts;
>
> - ret = set_register(pegasus, WakeupControl, reg78);
> - if (!ret)
> - ret = device_set_wakeup_enable(&pegasus->usb->dev,
> - wol->wolopts);
> - return ret;
> + r = set_register(pegasus, WakeupControl, reg78);
> + if (!r)
> + r = device_set_wakeup_enable(&pegasus->usb->dev, wol->wolopts);
> + return r;
> }
>
> static inline void pegasus_reset_wol(struct net_device *dev)
> @@ -1123,7 +885,7 @@ static inline void pegasus_reset_wol(struct net_device *dev)
> struct ethtool_wolinfo wol;
>
> memset(&wol, 0, sizeof wol);
> - (void) pegasus_set_wol(dev, &wol);
> + (void)pegasus_set_wol(dev, &wol);
> }
>
> static int
> @@ -1133,6 +895,7 @@ pegasus_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
>
> pegasus = netdev_priv(dev);
> mii_ethtool_gset(&pegasus->mii, ecmd);
> +
> return 0;
> }
>
> @@ -1140,30 +903,35 @@ static int
> pegasus_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> +
> return mii_ethtool_sset(&pegasus->mii, ecmd);
> }
>
> static int pegasus_nway_reset(struct net_device *dev)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> +
> return mii_nway_restart(&pegasus->mii);
> }
>
> static u32 pegasus_get_link(struct net_device *dev)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> +
> return mii_link_ok(&pegasus->mii);
> }
>
> static u32 pegasus_get_msglevel(struct net_device *dev)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> +
> return pegasus->msg_enable;
> }
>
> static void pegasus_set_msglevel(struct net_device *dev, u32 v)
> {
> pegasus_t *pegasus = netdev_priv(dev);
> +
> pegasus->msg_enable = v;
> }
>
> @@ -1181,7 +949,7 @@ static const struct ethtool_ops ops = {
>
> static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
> {
> - __u16 *data = (__u16 *) &rq->ifr_ifru;
> + __u16 *data = (__u16 *) & rq->ifr_ifru;
> pegasus_t *pegasus = netdev_priv(net);
> int res;
>
> @@ -1195,7 +963,7 @@ static int pegasus_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
> case SIOCDEVPRIVATE + 2:
> if (!capable(CAP_NET_ADMIN))
> return -EPERM;
> - write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, data[2]);
> + write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]);
> res = 0;
> break;
> default:
> @@ -1218,15 +986,12 @@ static void pegasus_set_multicast(struct net_device *net)
> } else {
> pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST;
> pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS;
> + netif_dbg(pegasus, link, net, "general mode\n");
> }
> -
> - pegasus->ctrl_urb->status = 0;
> -
> - pegasus->flags |= ETH_REGS_CHANGE;
> - ctrl_callback(pegasus->ctrl_urb);
> + update_eth_regs_async(pegasus);
> }
>
> -static __u8 mii_phy_probe(pegasus_t *pegasus)
> +static __u8 mii_phy_probe(pegasus_t * pegasus)
> {
> int i;
> __u16 tmp;
> @@ -1238,11 +1003,10 @@ static __u8 mii_phy_probe(pegasus_t *pegasus)
> else
> return i;
> }
> -
> return 0xff;
> }
>
> -static inline void setup_pegasus_II(pegasus_t *pegasus)
> +static inline void setup_pegasus_II(pegasus_t * pegasus)
> {
> __u8 data = 0xa5;
>
> @@ -1253,26 +1017,21 @@ static inline void setup_pegasus_II(pegasus_t *pegasus)
> set_register(pegasus, Reg7b, 0);
> else
> set_register(pegasus, Reg7b, 2);
> -
> set_register(pegasus, 0x83, data);
> get_registers(pegasus, 0x83, 1, &data);
> -
> if (data == 0xa5)
> pegasus->chip = 0x8513;
> else
> pegasus->chip = 0;
> -
> set_register(pegasus, 0x80, 0xc0);
> set_register(pegasus, 0x83, 0xff);
> set_register(pegasus, 0x84, 0x01);
> -
> if (pegasus->features & HAS_HOME_PNA && mii_mode)
> set_register(pegasus, Reg81, 6);
> else
> set_register(pegasus, Reg81, 2);
> }
>
> -
> static int pegasus_count;
> static struct workqueue_struct *pegasus_workqueue;
> #define CARRIER_CHECK_DELAY (2 * HZ)
> @@ -1281,10 +1040,9 @@ static void check_carrier(struct work_struct *work)
> {
> pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work);
> set_carrier(pegasus->net);
> - if (!(pegasus->flags & PEGASUS_UNPLUG)) {
> + if (!(pegasus->flags & PEGASUS_UNPLUG))
> queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
> - CARRIER_CHECK_DELAY);
> - }
> + CARRIER_CHECK_DELAY);
> }
>
> static int pegasus_blacklisted(struct usb_device *udev)
> @@ -1299,11 +1057,11 @@ static int pegasus_blacklisted(struct usb_device *udev)
> (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
> (udd->bDeviceProtocol == 1))
> return 1;
> -
> return 0;
> }
>
> -/* we rely on probe() and remove() being serialized so we
> +/*
> + * we rely on probe() and remove() being serialized so we
> * don't need extra locking on pegasus_count.
> */
> static void pegasus_dec_workqueue(void)
> @@ -1340,14 +1098,13 @@ static int pegasus_probe(struct usb_interface *intf,
>
> pegasus = netdev_priv(net);
> pegasus->dev_index = dev_index;
> - init_waitqueue_head(&pegasus->ctrl_wait);
>
> if (!alloc_urbs(pegasus)) {
> dev_err(&intf->dev, "can't allocate %s\n", "urbs");
> goto out1;
> }
>
> - tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long) pegasus);
> + tasklet_init(&pegasus->rx_tl, rx_fixup, (unsigned long)pegasus);
>
> INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier);
>
> @@ -1355,7 +1112,6 @@ static int pegasus_probe(struct usb_interface *intf,
> pegasus->usb = dev;
> pegasus->net = net;
>
> -
> net->watchdog_timeo = PEGASUS_TX_TIMEOUT;
> net->netdev_ops = &pegasus_netdev_ops;
> SET_ETHTOOL_OPS(net, &ops);
> @@ -1364,9 +1120,9 @@ static int pegasus_probe(struct usb_interface *intf,
> pegasus->mii.mdio_write = mdio_write;
> pegasus->mii.phy_id_mask = 0x1f;
> pegasus->mii.reg_num_mask = 0x1f;
> - spin_lock_init(&pegasus->rx_pool_lock);
> pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV
> - | NETIF_MSG_PROBE | NETIF_MSG_LINK);
> + | NETIF_MSG_PROBE
> + | NETIF_MSG_LINK);
>
> pegasus->features = usb_dev_id[dev_index].private;
> get_interrupt_interval(pegasus);
> @@ -1376,7 +1132,6 @@ static int pegasus_probe(struct usb_interface *intf,
> goto out2;
> }
> set_ethernet_addr(pegasus);
> - fill_skb_pool(pegasus);
> if (pegasus->features & PEGASUS_II) {
> dev_info(&intf->dev, "setup Pegasus II specific registers\n");
> setup_pegasus_II(pegasus);
> @@ -1394,17 +1149,12 @@ static int pegasus_probe(struct usb_interface *intf,
> if (res)
> goto out3;
> queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
> - CARRIER_CHECK_DELAY);
> -
> - dev_info(&intf->dev, "%s, %s, %pM\n",
> - net->name,
> - usb_dev_id[dev_index].name,
> - net->dev_addr);
> + CARRIER_CHECK_DELAY);
> + dev_info(&intf->dev, "%s, %s: %pM\n", net->name,
> + usb_dev_id[dev_index].name, net->dev_addr);
> return 0;
> -
> out3:
> usb_set_intfdata(intf, NULL);
> - free_skb_pool(pegasus);
> out2:
> free_all_urbs(pegasus);
> out1:
> @@ -1429,7 +1179,6 @@ static void pegasus_disconnect(struct usb_interface *intf)
> unregister_netdev(pegasus->net);
> unlink_all_urbs(pegasus);
> free_all_urbs(pegasus);
> - free_skb_pool(pegasus);
> if (pegasus->rx_skb != NULL) {
> dev_kfree_skb(pegasus->rx_skb);
> pegasus->rx_skb = NULL;
> @@ -1466,21 +1215,21 @@ static int pegasus_resume(struct usb_interface *intf)
> intr_callback(pegasus->intr_urb);
> }
> queue_delayed_work(pegasus_workqueue, &pegasus->carrier_check,
> - CARRIER_CHECK_DELAY);
> + CARRIER_CHECK_DELAY);
> return 0;
> }
>
> static const struct net_device_ops pegasus_netdev_ops = {
> - .ndo_open = pegasus_open,
> - .ndo_stop = pegasus_close,
> - .ndo_do_ioctl = pegasus_ioctl,
> - .ndo_start_xmit = pegasus_start_xmit,
> - .ndo_set_rx_mode = pegasus_set_multicast,
> - .ndo_get_stats = pegasus_netdev_stats,
> - .ndo_tx_timeout = pegasus_tx_timeout,
> - .ndo_change_mtu = eth_change_mtu,
> - .ndo_set_mac_address = eth_mac_addr,
> - .ndo_validate_addr = eth_validate_addr,
> + .ndo_open = pegasus_open,
> + .ndo_stop = pegasus_close,
> + .ndo_do_ioctl = pegasus_ioctl,
> + .ndo_start_xmit = pegasus_start_xmit,
> + .ndo_set_rx_mode = pegasus_set_multicast,
> + .ndo_get_stats = pegasus_netdev_stats,
> + .ndo_tx_timeout = pegasus_tx_timeout,
> + .ndo_change_mtu = eth_change_mtu,
> + .ndo_set_mac_address = eth_mac_addr,
> + .ndo_validate_addr = eth_validate_addr,
> };
>
> static struct usb_driver pegasus_driver = {
> @@ -1500,7 +1249,7 @@ static void __init parse_id(char *id)
>
> if ((token = strsep(&id, ":")) != NULL)
> name = token;
> - /* name now points to a null terminated string*/
> + /* name now points to a null terminated string */
> if ((token = strsep(&id, ":")) != NULL)
> vendor_id = simple_strtoul(token, NULL, 16);
> if ((token = strsep(&id, ":")) != NULL)
> @@ -1514,7 +1263,7 @@ static void __init parse_id(char *id)
> if (device_id > 0x10000 || device_id == 0)
> return;
>
> - for (i = 0; usb_dev_id[i].name; i++);
> + for (i = 0; usb_dev_id[i].name; i++) ;
> usb_dev_id[i].name = name;
> usb_dev_id[i].vendor = vendor_id;
> usb_dev_id[i].device = device_id;
> diff --git a/drivers/net/usb/pegasus.h b/drivers/net/usb/pegasus.h
> index 65b78b3..809e560 100644
> --- a/drivers/net/usb/pegasus.h
> +++ b/drivers/net/usb/pegasus.h
> @@ -1,5 +1,5 @@
> /*
> - * Copyright (c) 1999-2003 Petko Manolov - Petkan (petkan@xxxxxxxxxxxxxxxxxxxxx)
> + * Copyright (c) 1999-2013 Petko Manolov - Petkan (petkan@xxxxxxxxxxxxx)
> *
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License version 2 as published
> @@ -34,8 +34,6 @@
> #define CTRL_URB_SLEEP 0x00000020
> #define PEGASUS_UNPLUG 0x00000040
> #define PEGASUS_RX_URB_FAIL 0x00000080
> -#define ETH_REGS_CHANGE 0x40000000
> -#define ETH_REGS_CHANGED 0x80000000
>
> #define RX_MULTICAST 2
> #define RX_PROMISCUOUS 4
> @@ -96,12 +94,8 @@ typedef struct pegasus {
> int intr_interval;
> struct tasklet_struct rx_tl;
> struct delayed_work carrier_check;
> - struct urb *ctrl_urb, *rx_urb, *tx_urb, *intr_urb;
> - struct sk_buff *rx_pool[RX_SKBS];
> + struct urb *rx_urb, *tx_urb, *intr_urb;
> struct sk_buff *rx_skb;
> - struct usb_ctrlrequest dr;
> - wait_queue_head_t ctrl_wait;
> - spinlock_t rx_pool_lock;
> int chip;
> unsigned char intr_buff[8];
> __u8 tx_buff[PEGASUS_MTU];
> --
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