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Subject[patch] remove init_fcdev
Alan,

the patch removes use of the unsafe init_fcdev() and replaces it with
the new prepare_fcdev()/publish_netdev() API as described at

http://www.uow.edu.au/~andrewm/linux/netdevice2.txt

I changed drivers/i2o/i2o_lan.c:i2o_lan_register_device() to use prepare_fddidev(). Not sure why it wasn't using init_fddidev()
initially?

I also migrated a couple of these drivers over to use
SET_MODULE_OWNER.

Files affected:

drivers/net/fc/iph5526.c
drivers/block/fusion/mptlan.c
drivers/i2o/i2o_lan.c

This all went in pretty cleanly.

A patch for rrunner.c has been sent to Jes so init_hippi_dev() is
done too.



--- linux-2.4.0-test13pre4-ac2/drivers/net/fc/iph5526.c Sat Dec 23 17:24:20 2000
+++ linux-akpm/drivers/net/fc/iph5526.c Sat Dec 23 22:02:21 2000
@@ -25,6 +25,7 @@
07.07.99 Can be loaded as part of the Kernel. Changed semaphores. Added
more checks before invalidating SEST entries.
07.08.99 Added Broadcast IP stuff and fixed an unicast timeout bug.
+23Dec00 Use new publish_netdev interface. Use SET_MODULE_OWNER. (andrewm@uow.edu.au)
***********************************************************************/
/* TODO:
R_T_TOV set to 15msec in Loop topology. Need to be 100 msec.
@@ -33,7 +34,7 @@
*/

static const char *version =
- "iph5526.c:v1.0 07.08.99 Vineet Abraham (vmabraham@hotmail.com)\n";
+ "iph5526.c:v1.0 23Dec00 Vineet Abraham (vmabraham@hotmail.com)\n";

#include <linux/module.h>
#include <linux/kernel.h>
@@ -245,7 +246,7 @@

if(fc[count] != NULL) {
if (dev == NULL) {
- dev = init_fcdev(NULL, 0);
+ dev = prepare_fcdev(NULL, 0);
if (dev == NULL)
return -ENOMEM;
}
@@ -266,6 +267,7 @@
dev->dev_addr[4] = (fi->g.my_port_name_low & 0x0000FF00) >> 8;
dev->dev_addr[5] = fi->g.my_port_name_low;
#ifndef MODULE
+ publish_netdev(dev);
count++;
}
else
@@ -2916,14 +2918,12 @@
static int iph5526_open(struct net_device *dev)
{
netif_start_queue(dev);
- MOD_INC_USE_COUNT;
return 0;
}

static int iph5526_close(struct net_device *dev)
{
netif_stop_queue(dev);
- MOD_DEC_USE_COUNT;
return 0;
}

@@ -4543,7 +4543,7 @@

while(fc[i] != NULL) {
dev_fc[i] = NULL;
- dev_fc[i] = init_fcdev(dev_fc[i], 0);
+ dev_fc[i] = prepare_fcdev(dev_fc[i], 0);
if (dev_fc[i] == NULL) {
printk("iph5526.c: init_fcdev failed for card #%d\n", i+1);
break;
@@ -4551,16 +4551,20 @@
dev_fc[i]->irq = irq;
dev_fc[i]->mem_end = bad;
dev_fc[i]->base_addr = io;
- dev_fc[i]->init = iph5526_probe;
+// dev_fc[i]->init = iph5526_probe;
dev_fc[i]->priv = fc[i];
fc[i]->dev = dev_fc[i];
- if (register_fcdev(dev_fc[i]) != 0) {
+ if (iph5526_probe(dev_fc[i]) != 0) {
+ withdraw_netdev(dev_fc[i]);
kfree(dev_fc[i]);
dev_fc[i] = NULL;
if (i == 0) {
printk("iph5526.c: IP registeration failed!!!\n");
return -ENODEV;
}
+ } else {
+ SET_MODULE_OWNER(dev_fc[i]);
+ publish_netdev(dev_fc[i]);
}
i++;
}
@@ -4578,7 +4582,7 @@
void *priv = dev->priv;
fc[i]->g.dont_init = TRUE;
take_tachyon_offline(fc[i]);
- unregister_fcdev(dev);
+ unregister_netdev(dev);
clean_up_memory(fc[i]);
if (dev->priv)
kfree(priv);
--- linux-2.4.0-test13pre4-ac2/drivers/block/fusion/mptlan.c Sat Dec 23 17:24:19 2000
+++ linux-akpm/drivers/block/fusion/mptlan.c Sat Dec 23 22:02:21 2000
@@ -1306,7 +1306,7 @@
struct mpt_lan_priv *priv = NULL;
u8 HWaddr[FC_ALEN], *a;

- dev = init_fcdev(NULL, sizeof(struct mpt_lan_priv));
+ dev = prepare_fcdev(NULL, sizeof(struct mpt_lan_priv));
if (!dev)
return (NULL);
dev->mtu = MPT_LAN_MTU;
@@ -1378,7 +1378,8 @@
"and setting initial values\n"));

SET_MODULE_OWNER(dev);
-
+ publish_netdev(dev);
+
return dev;
}

@@ -1460,7 +1461,7 @@

printk (KERN_INFO MYNAM ": %s/%s: Fusion MPT LAN device unregistered.\n",
IOC_AND_NETDEV_NAMES_s_s(dev));
- unregister_fcdev(dev);
+ unregister_netdev(dev);
mpt_landev[i] = (struct net_device *) 0xdeadbeef; /* Debug */
}

--- linux-2.4.0-test13pre4-ac2/drivers/i2o/i2o_lan.c Sat Dec 23 17:24:20 2000
+++ linux-akpm/drivers/i2o/i2o_lan.c Sat Dec 23 22:28:37 2000
@@ -744,11 +744,8 @@
struct i2o_controller *iop = i2o_dev->controller;
u32 mc_addr_group[64];

- MOD_INC_USE_COUNT;
-
if (i2o_claim_device(i2o_dev, &i2o_lan_handler)) {
printk(KERN_WARNING "%s: Unable to claim the I2O LAN device.\n", dev->name);
- MOD_DEC_USE_COUNT;
return -EAGAIN;
}
dprintk(KERN_INFO "%s: I2O LAN device (tid=%d) claimed by LAN OSM.\n",
@@ -765,7 +762,6 @@
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0001, -1,
&mc_addr_group, sizeof(mc_addr_group)) < 0 ) {
printk(KERN_WARNING "%s: Unable to query LAN_MAC_ADDRESS group.\n", dev->name);
- MOD_DEC_USE_COUNT;
return -EAGAIN;
}
priv->max_size_mc_table = mc_addr_group[8];
@@ -775,7 +771,6 @@
priv->i2o_fbl = kmalloc(priv->max_buckets_out * sizeof(struct sk_buff *),
GFP_KERNEL);
if (priv->i2o_fbl == NULL) {
- MOD_DEC_USE_COUNT;
return -ENOMEM;
}
priv->i2o_fbl_tail = -1;
@@ -818,8 +813,6 @@
ret = -EBUSY;
}

- MOD_DEC_USE_COUNT;
-
return ret;
}

@@ -1281,15 +1274,13 @@
u8 hw_addr[8];
u32 tx_max_out = 0;
unsigned short (*type_trans)(struct sk_buff *, struct net_device *);
- void (*unregister_dev)(struct net_device *dev);

switch (i2o_dev->lct_data.sub_class) {
case I2O_LAN_ETHERNET:
- dev = init_etherdev(NULL, sizeof(struct i2o_lan_local));
+ dev = prepare_etherdev(NULL, sizeof(struct i2o_lan_local));
if (dev == NULL)
return NULL;
type_trans = eth_type_trans;
- unregister_dev = unregister_netdev;
break;

#ifdef CONFIG_ANYLAN
@@ -1304,40 +1295,25 @@
dev = prepare_trdev(NULL, sizeof(struct i2o_lan_local));
if (dev==NULL)
return NULL;
- publish_netdev(dev); /* AKPM: racy */
type_trans = tr_type_trans;
- unregister_dev = unregister_netdev;
break;
#endif

#ifdef CONFIG_FDDI
case I2O_LAN_FDDI:
{
- int size = sizeof(struct net_device) + sizeof(struct i2o_lan_local);
-
- dev = (struct net_device *) kmalloc(size, GFP_KERNEL);
+ dev = prepare_fddidev(NULL, sizeof(struct i2o_lan_local));
if (dev == NULL)
return NULL;
- memset((char *)dev, 0, size);
- dev->priv = (void *)(dev + 1);
-
- if (dev_alloc_name(dev, "fddi%d") < 0) {
- printk(KERN_WARNING "i2o_lan: Too many FDDI devices.\n");
- kfree(dev);
- return NULL;
- }
type_trans = fddi_type_trans;
- unregister_dev = (void *)unregister_netdev;
-
fddi_setup(dev);
- register_netdev(dev);
}
break;
#endif

#ifdef CONFIG_NET_FC
case I2O_LAN_FIBRE_CHANNEL:
- dev = init_fcdev(NULL, sizeof(struct i2o_lan_local));
+ dev = prepare_fcdev(NULL, sizeof(struct i2o_lan_local));
if (dev == NULL)
return NULL;
type_trans = NULL;
@@ -1345,7 +1321,6 @@
* and export it in include/linux/fcdevice.h
* type_trans = fc_type_trans;
*/
- unregister_dev = (void *)unregister_fcdev;
break;
#endif

@@ -1382,7 +1357,7 @@
0x0001, 0, &hw_addr, sizeof(hw_addr)) < 0) {
printk(KERN_ERR "%s: Unable to query hardware address.\n", dev->name);
unit--;
- unregister_dev(dev);
+ withdraw_netdev(dev);
kfree(dev);
return NULL;
}
@@ -1397,7 +1372,7 @@
0x0007, 2, &tx_max_out, sizeof(tx_max_out)) < 0) {
printk(KERN_ERR "%s: Unable to query max TX queue.\n", dev->name);
unit--;
- unregister_dev(dev);
+ withdraw_netdev(dev);
kfree(dev);
return NULL;
}
@@ -1428,6 +1403,8 @@
if (i2o_dev->lct_data.sub_class == I2O_LAN_ETHERNET)
dev->change_mtu = i2o_lan_change_mtu;

+ SET_MODULE_OWNER(dev);
+ publish_netdev(dev);
return dev;
}

@@ -1533,7 +1510,7 @@
break;
#ifdef CONFIG_FDDI
case I2O_LAN_FDDI:
- unregister_netdevice(dev);
+ unregister_netdev(dev);
break;
#endif
#ifdef CONFIG_TR
@@ -1543,7 +1520,7 @@
#endif
#ifdef CONFIG_NET_FC
case I2O_LAN_FIBRE_CHANNEL:
- unregister_fcdev(dev);
+ unregister_netdev(dev);
break;
#endif
default:
-
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