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Commit ad00b760 authored by Stephen Hemminger's avatar Stephen Hemminger
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[netdrvr skfddi] use PCI hotplug API; other cleanups 

Third revision of the cleanup of skfddi driver.
  * use new pci device bus initialization
  * allocate network device with alloc_fddidev and use dev->priv
   * get rid of special module/non module distinctions.
   * fix error unwinds and return values on initialization
   * call driver_init directly not via register_netdev
   * reset internal queue count after purge
   * get rid of h[iy]sterical comment that is no longer true
     about warnings
parent cb7faa93
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Showing with 167 additions and 458 deletions
drivers/net/skfp/skfddi.c
View file @ ad00b760
......@@ -39,12 +39,6 @@
* are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h.
* The others belong to the SysKonnect FDDI Hardware Module and
* should better not be changed.
* NOTE:
* Compiling this driver produces some warnings, but I did not fix
* this, because the Hardware Module source is used for different
* drivers, and fixing it for Linux might bring problems on other
* projects. To keep the source common for all those drivers (and
* thus simplify fixes to it), please do not clean it up!
*
* Modification History:
* Date Name Description
......@@ -58,6 +52,7 @@
* 07-May-00 DM 64 bit fixes, new dma interface
* 31-Jul-03 DB Audit copy_*_user in skfp_ioctl
* Daniele Bellucci <bellucda@tiscali.it>
* 03-Dec-03 SH Convert to PCI device model
*
* Compilation options (-Dxxx):
* DRIVERDEBUG print lots of messages to log file
......@@ -70,7 +65,7 @@
/* Version information string - should be updated prior to */
/* each new release!!! */
#define VERSION "2.06"
#define VERSION "2.07"
static const char *boot_msg =
"SysKonnect FDDI PCI Adapter driver v" VERSION " for\n"
......@@ -80,15 +75,11 @@ static const char *boot_msg =
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ctype.h> // isdigit
#include <linux/netdevice.h>
#include <linux/fddidevice.h>
#include <linux/skbuff.h>
......@@ -106,17 +97,7 @@ static const char *boot_msg =
#include "h/smtstate.h"
// Define global routines
int skfp_probe(struct net_device *dev);
// Define module-wide (static) routines
static struct net_device *alloc_device(struct net_device *dev, u_long iobase);
static struct net_device *insert_device(struct net_device *dev,
int (*init) (struct net_device *));
static int fddi_dev_index(unsigned char *s);
static void init_dev(struct net_device *dev, u_long iobase);
static void link_modules(struct net_device *dev, struct net_device *tmp);
static int skfp_driver_init(struct net_device *dev);
static int skfp_open(struct net_device *dev);
static int skfp_close(struct net_device *dev);
......@@ -193,15 +174,6 @@ MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>");
// Define module-wide (static) variables
static int num_boards; /* total number of adapters configured */
static int num_fddi;
static int autoprobed;
#ifdef MODULE
static struct net_device *unlink_modules(struct net_device *p);
static int loading_module = 1;
#else
static int loading_module;
#endif // MODULE
#ifdef DRIVERDEBUG
#define PRINTK(s, args...) printk(s, ## args)
......@@ -212,9 +184,9 @@ static int loading_module;
#define PRIV(dev) (&(((struct s_smc *)dev->priv)->os))
/*
* ==============
* = skfp_probe =
* ==============
* =================
* = skfp_init_one =
* =================
*
* Overview:
* Probes for supported FDDI PCI controllers
......@@ -223,30 +195,11 @@ static int loading_module;
* Condition code
*
* Arguments:
* dev - pointer to device information
* pdev - pointer to PCI device information
*
* Functional Description:
* This routine is called by the OS for each FDDI device name (fddi0,
* fddi1,...,fddi6, fddi7) specified in drivers/net/Space.c.
* If loaded as a module, it will detect and initialize all
* adapters the first time it is called.
*
* Let's say that skfp_probe() is getting called to initialize fddi0.
* Furthermore, let's say there are three supported controllers in the
* system. Before skfp_probe() leaves, devices fddi0, fddi1, and fddi2
* will be initialized and a global flag will be set to indicate that
* skfp_probe() has already been called.
*
* However...the OS doesn't know that we've already initialized
* devices fddi1 and fddi2 so skfp_probe() gets called again and again
* until it reaches the end of the device list for FDDI (presently,
* fddi7). It's important that the driver "pretend" to probe for
* devices fddi1 and fddi2 and return success. Devices fddi3
* through fddi7 will return failure since they weren't initialized.
*
* This algorithm seems to work for the time being. As other FDDI
* drivers are written for Linux, a more generic approach (perhaps
* similar to the Ethernet card approach) may need to be implemented.
* This is now called by PCI driver registration process
* for each board found.
*
* Return Codes:
* 0 - This device (fddi0, fddi1, etc) configured successfully
......@@ -259,129 +212,94 @@ static int loading_module;
* initialized and the board resources are read and stored in
* the device structure.
*/
int skfp_probe(struct net_device *dev)
static int skfp_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int i; /* used in for loops */
struct pci_dev *pdev = NULL; /* PCI device structure */
#ifndef MEM_MAPPED_IO
u16 port; /* temporary I/O (port) address */
int port_len; /* length of port address range (in bytes) */
#else
unsigned long port;
#endif
u16 command; /* PCI Configuration space Command register val */
struct net_device *dev;
struct s_smc *smc; /* board pointer */
struct net_device *tmp = dev;
u8 first_dev_used = 0;
u16 SubSysId;
PRINTK(KERN_INFO "entering skfp_probe\n");
/*
* Verify whether we're going through skfp_probe() again
*
* If so, see if we're going through for a subsequent fddi device that
* we've already initialized. If we are, return success (0). If not,
* return failure (-ENODEV).
*/
u32 port, len;
int err;
if (autoprobed) {
PRINTK(KERN_INFO "Already entered skfp_probe\n");
if (dev != NULL) {
if ((strncmp(dev->name, "fddi", 4) == 0) &&
(dev->base_addr != 0)) {
return (0);
}
return (-ENODEV);
}
}
autoprobed = 1; /* set global flag */
PRINTK(KERN_INFO "entering skfp_init_one\n");
if (num_boards == 0)
printk("%s\n", boot_msg);
/* Scan for Syskonnect FDDI PCI controllers */
for (i = 0; i < SKFP_MAX_NUM_BOARDS; i++) { // scan for PCI cards
PRINTK(KERN_INFO "Check device %d\n", i);
if ((pdev=pci_find_device(PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP,
pdev)) == 0) {
break;
}
if (pci_enable_device(pdev))
continue;
#ifndef MEM_MAPPED_IO
/* Verify that I/O enable bit is set (PCI slot is enabled) */
pci_read_config_word(pdev, PCI_COMMAND, &command);
if ((command & PCI_COMMAND_IO) == 0) {
PRINTK("I/O enable bit not set!");
PRINTK(" Verify that slot is enabled\n");
continue;
}
/* Turn off memory mapped space and enable mastering */
PRINTK(KERN_INFO "Command Reg: %04x\n", command);
command |= PCI_COMMAND_MASTER;
command &= ~PCI_COMMAND_MEMORY;
pci_write_config_word(pdev, PCI_COMMAND, command);
/* Read I/O base address from PCI Configuration Space */
err = pci_enable_device(pdev);
if (err)
goto err_out1;
pci_read_config_word(pdev, PCI_BASE_ADDRESS_1, &port);
port &= PCI_BASE_ADDRESS_IO_MASK; // clear I/O bit (bit 0)
/* Verify port address range is not already being used */
#ifdef MEM_MAPPED_IO
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
printk(KERN_ERR "skfp: region is not an MMIO resource\n");
err = -EIO;
goto err_out1;
}
port = pci_resource_start(pdev, 0);
len = pci_resource_len(pdev, 0);
port_len = FP_IO_LEN;
if (check_region(port, port_len) != 0) {
printk("I/O range allocated to adapter");
printk(" (0x%X-0x%X) is already being used!\n", port,
(port + port_len - 1));
continue;
if (len < 0x4000) {
printk(KERN_ERR "skfp: Invalid PCI region size: %d\n", len);
err = -EIO;
goto err_out1;
}
#else
/* Verify that MEM enable bit is set (PCI slot is enabled) */
pci_read_config_word(pdev, PCI_COMMAND, &command);
if ((command & PCI_COMMAND_MEMORY) == 0) {
PRINTK("MEMORY-I/O enable bit not set!");
PRINTK(" Verify that slot is enabled\n");
continue;
if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) {
printk(KERN_ERR "skfp: region is not PIO resource\n");
err = -EIO;
goto err_out1;
}
/* Turn off IO mapped space and enable mastering */
PRINTK(KERN_INFO "Command Reg: %04x\n", command);
command |= PCI_COMMAND_MASTER;
command &= ~PCI_COMMAND_IO;
pci_write_config_word(pdev, PCI_COMMAND, command);
port = pci_resource_start(pdev, 1);
len = pci_resource_len(pdev, 1);
if (len < FP_IO_LEN) {
printk(KERN_ERR "skfp: Invalid PCI region size: %d\n",
io_len);
err = -EIO;
goto err_out1;
}
#endif
err = pci_request_regions(pdev, "skfddi");
if (err)
goto err_out1;
port = pci_resource_start(pdev, 0);
pci_set_master(pdev);
port = (unsigned long)ioremap(port, 0x4000);
if (!port){
printk("skfp: Unable to map MEMORY register, "
dev = alloc_fddidev(sizeof(struct s_smc));
if (!dev) {
printk(KERN_ERR "skfp: Unable to allocate fddi device, "
"FDDI adapter will be disabled.\n");
break;
err = -ENOMEM;
goto err_out2;
}
#endif
if ((!loading_module) || first_dev_used) {
/* Allocate a device structure for this adapter */
tmp = alloc_device(dev, port);
#ifdef MEM_MAPPED_IO
dev->base_addr = (unsigned long) ioremap(port, len);
if (!dev->base_addr) {
printk(KERN_ERR "skfp: Unable to map MEMORY register, "
"FDDI adapter will be disabled.\n");
err = -EIO;
goto err_out3;
}
first_dev_used = 1; // only significant first time
pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &SubSysId);
#else
dev->base_addr = port;
#endif
if (tmp != NULL) {
if (loading_module)
link_modules(dev, tmp);
dev = tmp;
init_dev(dev, port);
dev->irq = pdev->irq;
dev->get_stats = &skfp_ctl_get_stats;
dev->open = &skfp_open;
dev->stop = &skfp_close;
dev->hard_start_xmit = &skfp_send_pkt;
dev->set_multicast_list = &skfp_ctl_set_multicast_list;
dev->set_mac_address = &skfp_ctl_set_mac_address;
dev->do_ioctl = &skfp_ioctl;
dev->header_cache_update = NULL; /* not supported */
/* Initialize board structure with bus-specific info */
SET_MODULE_OWNER(dev);
SET_NETDEV_DEV(dev, &pdev->dev);
/* Initialize board structure with bus-specific info */
smc = (struct s_smc *) dev->priv;
smc->os.dev = dev;
smc->os.bus_type = SK_BUS_TYPE_PCI;
......@@ -393,240 +311,77 @@ int skfp_probe(struct net_device *dev)
smc->os.ResetRequested = FALSE;
skb_queue_head_init(&smc->os.SendSkbQueue);
if (skfp_driver_init(dev) == 0) {
// only increment global board
// count on success
num_boards++;
request_region(dev->base_addr,
FP_IO_LEN, dev->name);
if ((SubSysId & 0xff00) == 0x5500 ||
(SubSysId & 0xff00) == 0x5800) {
printk("%s: SysKonnect FDDI PCI adapter"
" found (SK-%04X)\n", dev->name,
SubSysId);
} else {
printk("%s: FDDI PCI adapter found\n",
dev->name);
}
} else {
kfree(dev);
i = SKFP_MAX_NUM_BOARDS; // stop search
}
} // if (dev != NULL)
} // for SKFP_MAX_NUM_BOARDS
/*
* If we're at this point we're going through skfp_probe() for the
* first time. Return success (0) if we've initialized 1 or more
* boards. Otherwise, return failure (-ENODEV).
*/
if (num_boards > 0)
return (0);
else {
printk("no SysKonnect FDDI adapter found\n");
return (-ENODEV);
}
} // skfp_probe
/************************
*
* Search the entire 'fddi' device list for a fixed probe. If a match isn't
* found then check for an autoprobe or unused device location. If they
* are not available then insert a new device structure at the end of
* the current list.
*
************************/
static struct net_device *alloc_device(struct net_device *dev, u_long iobase)
{
struct net_device *adev = NULL;
int fixed = 0, new_dev = 0;
PRINTK(KERN_INFO "entering alloc_device\n");
if (!dev)
return dev;
num_fddi = fddi_dev_index(dev->name);
if (loading_module) {
num_fddi++;
dev = insert_device(dev, skfp_probe);
return dev;
}
while (1) {
if (((dev->base_addr == NO_ADDRESS) ||
(dev->base_addr == 0)) && !adev) {
adev = dev;
} else if ((dev->priv == NULL) && (dev->base_addr == iobase)) {
fixed = 1;
} else {
if (dev->next == NULL) {
new_dev = 1;
} else if (strncmp(dev->next->name, "fddi", 4) != 0) {
new_dev = 1;
}
}
if ((dev->next == NULL) || new_dev || fixed)
break;
dev = dev->next;
num_fddi++;
} // while (1)
if (adev && !fixed) {
dev = adev;
num_fddi = fddi_dev_index(dev->name);
new_dev = 0;
}
if (((dev->next == NULL) && ((dev->base_addr != NO_ADDRESS) &&
(dev->base_addr != 0)) && !fixed) ||
new_dev) {
num_fddi++; /* New device */
dev = insert_device(dev, skfp_probe);
}
if (dev) {
if (!dev->priv) {
/* Allocate space for private board structure */
dev->priv = (void *) kmalloc(sizeof(struct s_smc),
GFP_KERNEL);
if (dev->priv == NULL) {
printk("%s: Could not allocate memory for",
dev->name);
printk(" private board structure!\n");
return (NULL);
}
/* clear structure */
memset(dev->priv, 0, sizeof(struct s_smc));
}
}
return dev;
} // alloc_device
/************************
*
* Initialize device structure
*
************************/
static void init_dev(struct net_device *dev, u_long iobase)
{
/* Initialize new device structure */
dev->mem_end = 0; /* shared memory isn't used */
dev->mem_start = 0; /* shared memory isn't used */
dev->base_addr = iobase; /* save port (I/O) base address */
dev->if_port = 0; /* not applicable to FDDI adapters */
dev->dma = 0; /* Bus Master DMA doesn't require channel */
dev->irq = 0;
netif_start_queue(dev);
dev->get_stats = &skfp_ctl_get_stats;
dev->open = &skfp_open;
dev->stop = &skfp_close;
dev->hard_start_xmit = &skfp_send_pkt;
dev->hard_header = NULL; /* set in fddi_setup() */
dev->rebuild_header = NULL; /* set in fddi_setup() */
dev->set_multicast_list = &skfp_ctl_set_multicast_list;
dev->set_mac_address = &skfp_ctl_set_mac_address;
dev->do_ioctl = &skfp_ioctl;
dev->set_config = NULL; /* not supported for now &&& */
dev->header_cache_update = NULL; /* not supported */
dev->change_mtu = NULL; /* set in fddi_setup() */
SET_MODULE_OWNER(dev);
/* Initialize remaining device structure information */
fddi_setup(dev);
} // init_device
/************************
*
* If at end of fddi device list and can't use current entry, malloc
* one up. If memory could not be allocated, print an error message.
*
************************/
static struct net_device *insert_device(struct net_device *dev,
int (*init) (struct net_device *))
{
struct net_device *new;
int len;
PRINTK(KERN_INFO "entering insert_device\n");
len = sizeof(struct net_device) + sizeof(struct s_smc);
new = (struct net_device *) kmalloc(len, GFP_KERNEL);
if (new == NULL) {
printk("fddi%d: Device not initialised, insufficient memory\n",
num_fddi);
return NULL;
} else {
memset((char *) new, 0, len);
new->priv = (struct s_smc *) (new + 1);
new->init = init; /* initialisation routine */
if (!loading_module) {
new->next = dev->next;
dev->next = new;
}
/* create new device name */
if (num_fddi > 999) {
sprintf(new->name, "fddi????");
} else {
sprintf(new->name, "fddi%d", num_fddi);
}
}
return new;
} // insert_device
err = skfp_driver_init(dev);
if (err)
goto err_out4;
err = register_netdev(dev);
if (err)
goto err_out5;
/************************
*
* Get the number of a "fddiX" string
*
************************/
static int fddi_dev_index(unsigned char *s)
{
int i = 0, j = 0;
++num_boards;
pci_set_drvdata(pdev, dev);
for (; *s; s++) {
if (isdigit(*s)) {
j = 1;
i = (i * 10) + (*s - '0');
} else if (j)
break;
}
return i;
} // fddi_dev_index
if ((pdev->subsystem_device & 0xff00) == 0x5500 ||
(pdev->subsystem_device & 0xff00) == 0x5800)
printk("%s: SysKonnect FDDI PCI adapter"
" found (SK-%04X)\n", dev->name,
pdev->subsystem_device);
else
printk("%s: FDDI PCI adapter found\n", dev->name);
return 0;
err_out5:
if (smc->os.SharedMemAddr)
pci_free_consistent(pdev, smc->os.SharedMemSize,
smc->os.SharedMemAddr,
smc->os.SharedMemDMA);
pci_free_consistent(pdev, MAX_FRAME_SIZE,
smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA);
err_out4:
#ifdef MEM_MAPPED_IO
iounmap((void *) dev->base_addr);
#endif
err_out3:
free_netdev(dev);
err_out2:
pci_release_regions(pdev);
err_out1:
return err;
}
/************************
*
* Used if loaded as module only. Link the device structures
* together. Needed to release them all at unload.
*
************************/
static void link_modules(struct net_device *dev, struct net_device *tmp)
/*
* Called for each adapter board from pci_unregister_driver
*/
static void __devexit skfp_remove_one(struct pci_dev *pdev)
{
struct net_device *p = dev;
struct net_device *p = pci_get_drvdata(pdev);
struct s_smc *lp = p->priv;
if (p) {
while (((struct s_smc *) (p->priv))->os.next_module) {
p = ((struct s_smc *) (p->priv))->os.next_module;
}
unregister_netdev(p);
if (dev != tmp) {
((struct s_smc *) (p->priv))->os.next_module = tmp;
} else {
((struct s_smc *) (p->priv))->os.next_module = NULL;
if (lp->os.SharedMemAddr) {
pci_free_consistent(&lp->os.pdev,
lp->os.SharedMemSize,
lp->os.SharedMemAddr,
lp->os.SharedMemDMA);
lp->os.SharedMemAddr = NULL;
}
if (lp->os.LocalRxBuffer) {
pci_free_consistent(&lp->os.pdev,
MAX_FRAME_SIZE,
lp->os.LocalRxBuffer,
lp->os.LocalRxBufferDMA);
lp->os.LocalRxBuffer = NULL;
}
return;
} // link_modules
#ifdef MEM_MAPPED_IO
iounmap((void *) p->base_addr);
#endif
pci_release_regions(pdev);
free_netdev(p);
pci_set_drvdata(pdev, NULL);
}
/*
* ====================
......@@ -657,7 +412,7 @@ static int skfp_driver_init(struct net_device *dev)
{
struct s_smc *smc = (struct s_smc *) dev->priv;
skfddi_priv *bp = PRIV(dev);
u8 val; /* used for I/O read/writes */
int err = -EIO;
PRINTK(KERN_INFO "entering skfp_driver_init\n");
......@@ -666,9 +421,7 @@ static int skfp_driver_init(struct net_device *dev)
smc->hw.iop = dev->base_addr;
// Get the interrupt level from the PCI Configuration Table
val = dev->irq;
smc->hw.irq = val;
smc->hw.irq = dev->irq;
spin_lock_init(&bp->DriverLock);
......@@ -738,7 +491,7 @@ static int skfp_driver_init(struct net_device *dev)
bp->LocalRxBuffer, bp->LocalRxBufferDMA);
bp->LocalRxBuffer = NULL;
}
return (-1);
return err;
} // skfp_driver_init
......@@ -766,14 +519,15 @@ static int skfp_driver_init(struct net_device *dev)
static int skfp_open(struct net_device *dev)
{
struct s_smc *smc = (struct s_smc *) dev->priv;
int err;
PRINTK(KERN_INFO "entering skfp_open\n");
/* Register IRQ - support shared interrupts by passing device ptr */
if (request_irq(dev->irq, (void *) skfp_interrupt, SA_SHIRQ,
dev->name, dev)) {
printk("%s: Requested IRQ %d is busy\n", dev->name, dev->irq);
return (-EAGAIN);
}
err = request_irq(dev->irq, (void *) skfp_interrupt, SA_SHIRQ,
dev->name, dev);
if (err)
return err;
/*
* Set current address to factory MAC address
*
......@@ -797,6 +551,7 @@ static int skfp_open(struct net_device *dev)
/* Disable promiscuous filter settings */
mac_drv_rx_mode(smc, RX_DISABLE_PROMISC);
netif_start_queue(dev);
return (0);
} // skfp_open
......@@ -831,7 +586,6 @@ static int skfp_open(struct net_device *dev)
static int skfp_close(struct net_device *dev)
{
struct s_smc *smc = (struct s_smc *) dev->priv;
struct sk_buff *skb;
skfddi_priv *bp = PRIV(dev);
CLI_FBI();
......@@ -844,13 +598,8 @@ static int skfp_close(struct net_device *dev)
/* Deregister (free) IRQ */
free_irq(dev->irq, dev);
for (;;) {
skb = skb_dequeue(&bp->SendSkbQueue);
if (skb == NULL)
break;
bp->QueueSkb++;
dev_kfree_skb(skb);
}
skb_queue_purge(&bp->SendSkbQueue);
bp->QueueSkb = MAX_TX_QUEUE_LEN;
return (0);
} // skfp_close
......@@ -1285,6 +1034,8 @@ static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
break;
default:
printk("ioctl for %s: unknow cmd: %04x\n", dev->name, ioc.cmd);
status = -EOPNOTSUPP;
} // switch
return status;
......@@ -2538,63 +2289,21 @@ void drv_reset_indication(struct s_smc *smc)
} // drv_reset_indication
static struct net_device *mdev;
static struct pci_driver skfddi_pci_driver = {
.name = "skfddi",
.id_table = skfddi_pci_tbl,
.probe = skfp_init_one,
.remove = __devexit_p(skfp_remove_one),
};
static int __init skfd_init(void)
{
struct net_device *p;
if ((mdev = insert_device(NULL, skfp_probe)) == NULL)
return -ENOMEM;
for (p = mdev; p != NULL; p = ((struct s_smc *)p->priv)->os.next_module) {
if (register_netdev(p) != 0) {
printk("skfddi init_module failed\n");
return -EIO;
}
}
return 0;
return pci_module_init(&skfddi_pci_driver);
}
static struct net_device *unlink_modules(struct net_device *p)
{
struct net_device *next = NULL;
if (p->priv) { /* Private areas allocated? */
struct s_smc *lp = (struct s_smc *) p->priv;
next = lp->os.next_module;
if (lp->os.SharedMemAddr) {
pci_free_consistent(&lp->os.pdev,
lp->os.SharedMemSize,
lp->os.SharedMemAddr,
lp->os.SharedMemDMA);
lp->os.SharedMemAddr = NULL;
}
if (lp->os.LocalRxBuffer) {
pci_free_consistent(&lp->os.pdev,
MAX_FRAME_SIZE,
lp->os.LocalRxBuffer,
lp->os.LocalRxBufferDMA);
lp->os.LocalRxBuffer = NULL;
}
release_region(p->base_addr,
(lp->os.bus_type == SK_BUS_TYPE_PCI ? FP_IO_LEN : 0));
}
unregister_netdev(p);
printk("%s: unloaded\n", p->name);
free_netdev(p); /* Free the device structure */
return next;
} // unlink_modules
static void __exit skfd_exit(void)
{
while (mdev)
mdev = unlink_modules(mdev);
pci_unregister_driver(&skfddi_pci_driver);
}
module_init(skfd_init);
......
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